add all

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/djb.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 62f318930c856fc418115396d3c8d386
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/djb/Curve25519.cs

@@ -0,0 +1,3 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/djb/Curve25519.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 918daba9489c9ac4a81cf8769c7c518d
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/djb/Curve25519Point.cs

@@ -0,0 +1,3 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/djb/Curve25519Point.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 09cf8f472b66db04ebbde3a88ce37d44
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/gm.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: a169e85b7fbd1d34d94d1220c74f9a19
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/gm/SM2P256V1Curve.cs

@@ -0,0 +1,174 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities.Encoders;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.GM
+{
+    internal class SM2P256V1Curve
+        : AbstractFpCurve
+    {
+        public static readonly BigInteger q = SM2P256V1FieldElement.Q;
+
+        private const int SM2P256V1_DEFAULT_COORDS = COORD_JACOBIAN;
+        private const int SM2P256V1_FE_INTS = 8;
+        private static readonly ECFieldElement[] SM2P256V1_AFFINE_ZS = new ECFieldElement[] { new SM2P256V1FieldElement(BigInteger.One) }; 
+
+        protected readonly SM2P256V1Point m_infinity;
+
+        public SM2P256V1Curve()
+            : base(q)
+        {
+            this.m_infinity = new SM2P256V1Point(this, null, null);
+
+            this.m_a = FromBigInteger(new BigInteger(1,
+                Hex.DecodeStrict("FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00000000FFFFFFFFFFFFFFFC")));
+            this.m_b = FromBigInteger(new BigInteger(1,
+                Hex.DecodeStrict("28E9FA9E9D9F5E344D5A9E4BCF6509A7F39789F515AB8F92DDBCBD414D940E93")));
+            this.m_order = new BigInteger(1, Hex.DecodeStrict("FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFF7203DF6B21C6052B53BBF40939D54123"));
+            this.m_cofactor = BigInteger.One;
+            this.m_coord = SM2P256V1_DEFAULT_COORDS;
+        }
+
+        protected override ECCurve CloneCurve()
+        {
+            return new SM2P256V1Curve();
+        }
+
+        public override bool SupportsCoordinateSystem(int coord)
+        {
+            switch (coord)
+            {
+            case COORD_JACOBIAN:
+                return true;
+            default:
+                return false;
+            }
+        }
+
+        public virtual BigInteger Q
+        {
+            get { return q; }
+        }
+
+        public override ECPoint Infinity
+        {
+            get { return m_infinity; }
+        }
+
+        public override int FieldSize
+        {
+            get { return q.BitLength; }
+        }
+
+        public override ECFieldElement FromBigInteger(BigInteger x)
+        {
+            return new SM2P256V1FieldElement(x);
+        }
+
+        protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y)
+        {
+            return new SM2P256V1Point(this, x, y);
+        }
+
+        protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)
+        {
+            return new SM2P256V1Point(this, x, y, zs);
+        }
+
+        public override ECLookupTable CreateCacheSafeLookupTable(ECPoint[] points, int off, int len)
+        {
+            uint[] table = new uint[len * SM2P256V1_FE_INTS * 2];
+            {
+                int pos = 0;
+                for (int i = 0; i < len; ++i)
+                {
+                    ECPoint p = points[off + i];
+                    Nat256.Copy(((SM2P256V1FieldElement)p.RawXCoord).x, 0, table, pos); pos += SM2P256V1_FE_INTS;
+                    Nat256.Copy(((SM2P256V1FieldElement)p.RawYCoord).x, 0, table, pos); pos += SM2P256V1_FE_INTS;
+                }
+            }
+
+            return new SM2P256V1LookupTable(this, table, len);
+        }
+
+        public override ECFieldElement RandomFieldElement(SecureRandom r)
+        {
+            uint[] x = Nat256.Create();
+            SM2P256V1Field.Random(r, x);
+            return new SM2P256V1FieldElement(x);
+        }
+
+        public override ECFieldElement RandomFieldElementMult(SecureRandom r)
+        {
+            uint[] x = Nat256.Create();
+            SM2P256V1Field.RandomMult(r, x);
+            return new SM2P256V1FieldElement(x);
+        }
+
+        private class SM2P256V1LookupTable
+            : AbstractECLookupTable
+        {
+            private readonly SM2P256V1Curve m_outer;
+            private readonly uint[] m_table;
+            private readonly int m_size;
+
+            internal SM2P256V1LookupTable(SM2P256V1Curve outer, uint[] table, int size)
+            {
+                this.m_outer = outer;
+                this.m_table = table;
+                this.m_size = size;
+            }
+
+            public override int Size
+            {
+                get { return m_size; }
+            }
+
+            public override ECPoint Lookup(int index)
+            {
+                uint[] x = Nat256.Create(), y = Nat256.Create();
+                int pos = 0;
+
+                for (int i = 0; i < m_size; ++i)
+                {
+                    uint MASK = (uint)(((i ^ index) - 1) >> 31);
+
+                    for (int j = 0; j < SM2P256V1_FE_INTS; ++j)
+                    {
+                        x[j] ^= m_table[pos + j] & MASK;
+                        y[j] ^= m_table[pos + SM2P256V1_FE_INTS + j] & MASK;
+                    }
+
+                    pos += (SM2P256V1_FE_INTS * 2);
+                }
+
+                return CreatePoint(x, y);
+            }
+
+            public override ECPoint LookupVar(int index)
+            {
+                uint[] x = Nat256.Create(), y = Nat256.Create();
+                int pos = index * SM2P256V1_FE_INTS * 2;
+
+                for (int j = 0; j < SM2P256V1_FE_INTS; ++j)
+                {
+                    x[j] = m_table[pos + j];
+                    y[j] = m_table[pos + SM2P256V1_FE_INTS + j];
+                }
+
+                return CreatePoint(x, y);
+            }
+
+            private ECPoint CreatePoint(uint[] x, uint[] y)
+            {
+                return m_outer.CreateRawPoint(new SM2P256V1FieldElement(x), new SM2P256V1FieldElement(y), SM2P256V1_AFFINE_ZS);
+            }
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/gm/SM2P256V1Curve.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: f6a8d7e07e8d1c8469a394ff8a7e56b1
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/gm/SM2P256V1Field.cs

@@ -0,0 +1,349 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+using System.Diagnostics;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto.Utilities;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.GM
+{
+    internal class SM2P256V1Field
+    {
+        // 2^256 - 2^224 - 2^96 + 2^64 - 1
+        internal static readonly uint[] P = new uint[]{ 0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0xFFFFFFFF, 0xFFFFFFFF,
+            0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFE };
+        private static readonly uint[] PExt = new uint[]{ 00000001, 0x00000000, 0xFFFFFFFE, 0x00000001, 0x00000001,
+            0xFFFFFFFE, 0x00000000, 0x00000002, 0xFFFFFFFE, 0xFFFFFFFD, 0x00000003, 0xFFFFFFFE, 0xFFFFFFFF, 0xFFFFFFFF,
+            0x00000000, 0xFFFFFFFE };
+        private const uint P7 = 0xFFFFFFFE;
+        private const uint PExt15 = 0xFFFFFFFE;
+
+        public static void Add(uint[] x, uint[] y, uint[] z)
+        {
+            uint c = Nat256.Add(x, y, z);
+            if (c != 0 || (z[7] >= P7 && Nat256.Gte(z, P)))
+            {
+                AddPInvTo(z);
+            }
+        }
+
+        public static void AddExt(uint[] xx, uint[] yy, uint[] zz)
+        {
+            uint c = Nat.Add(16, xx, yy, zz);
+            if (c != 0 || (zz[15] >= PExt15 && Nat.Gte(16, zz, PExt)))
+            {
+                Nat.SubFrom(16, PExt, zz);
+            }
+        }
+
+        public static void AddOne(uint[] x, uint[] z)
+        {
+            uint c = Nat.Inc(8, x, z);
+            if (c != 0 || (z[7] >= P7 && Nat256.Gte(z, P)))
+            {
+                AddPInvTo(z);
+            }
+        }
+
+        public static uint[] FromBigInteger(BigInteger x)
+        {
+            uint[] z = Nat.FromBigInteger(256, x);
+            if (z[7] >= P7 && Nat256.Gte(z, P))
+            {
+                Nat256.SubFrom(P, z);
+            }
+            return z;
+        }
+
+        public static void Inv(uint[] x, uint[] z)
+        {
+            Mod.CheckedModOddInverse(P, x, z);
+        }
+
+        public static void Half(uint[] x, uint[] z)
+        {
+            if ((x[0] & 1) == 0)
+            {
+                Nat.ShiftDownBit(8, x, 0, z);
+            }
+            else
+            {
+                uint c = Nat256.Add(x, P, z);
+                Nat.ShiftDownBit(8, z, c);
+            }
+        }
+
+        public static int IsZero(uint[] x)
+        {
+            uint d = 0;
+            for (int i = 0; i < 8; ++i)
+            {
+                d |= x[i];
+            }
+            d = (d >> 1) | (d & 1);
+            return ((int)d - 1) >> 31;
+        }
+
+        public static void Multiply(uint[] x, uint[] y, uint[] z)
+        {
+            uint[] tt = Nat256.CreateExt();
+            Nat256.Mul(x, y, tt);
+            Reduce(tt, z);
+        }
+
+        public static void MultiplyAddToExt(uint[] x, uint[] y, uint[] zz)
+        {
+            uint c = Nat256.MulAddTo(x, y, zz);
+            if (c != 0 || (zz[15] >= PExt15 && Nat.Gte(16, zz, PExt)))
+            {
+                Nat.SubFrom(16, PExt, zz);
+            }
+        }
+
+        public static void Negate(uint[] x, uint[] z)
+        {
+            if (0 != IsZero(x))
+            {
+                Nat256.Sub(P, P, z);
+            }
+            else
+            {
+                Nat256.Sub(P, x, z);
+            }
+        }
+
+        public static void Random(SecureRandom r, uint[] z)
+        {
+            byte[] bb = new byte[8 * 4];
+            do
+            {
+                r.NextBytes(bb);
+                Pack.LE_To_UInt32(bb, 0, z, 0, 8);
+            }
+            while (0 == Nat.LessThan(8, z, P));
+        }
+
+        public static void RandomMult(SecureRandom r, uint[] z)
+        {
+            do
+            {
+                Random(r, z);
+            }
+            while (0 != IsZero(z));
+        }
+
+        public static void Reduce(uint[] xx, uint[] z)
+        {
+            long xx08 = xx[8], xx09 = xx[9], xx10 = xx[10], xx11 = xx[11];
+            long xx12 = xx[12], xx13 = xx[13], xx14 = xx[14], xx15 = xx[15];
+
+            long t0 = xx08 + xx09;
+            long t1 = xx10 + xx11;
+            long t2 = xx12 + xx15;
+            long t3 = xx13 + xx14;
+            long t4 = t3 + (xx15 << 1);
+
+            long ts = t0 + t3;
+            long tt = t1 + t2 + ts;
+
+            long cc = 0;
+            cc += (long)xx[0] + tt + xx13 + xx14 + xx15;
+            z[0] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[1] + tt - xx08 + xx14 + xx15;
+            z[1] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[2] - ts;
+            z[2] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[3] + tt - xx09 - xx10 + xx13;
+            z[3] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[4] + tt - t1 - xx08 + xx14;
+            z[4] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[5] + t4 + xx10;
+            z[5] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[6] + xx11 + xx14 + xx15;
+            z[6] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[7] + tt + t4 + xx12;
+            z[7] = (uint)cc;
+            cc >>= 32;
+
+            Debug.Assert(cc >= 0);
+
+            Reduce32((uint)cc, z);
+        }
+
+        public static void Reduce32(uint x, uint[] z)
+        {
+            long cc = 0;
+
+            if (x != 0)
+            {
+                long xx08 = x;
+
+                cc += (long)z[0] + xx08;
+                z[0] = (uint)cc;
+                cc >>= 32;
+                if (cc != 0)
+                {
+                    cc += (long)z[1];
+                    z[1] = (uint)cc;
+                    cc >>= 32;
+                }
+                cc += (long)z[2] - xx08;
+                z[2] = (uint)cc;
+                cc >>= 32;
+                cc += (long)z[3] + xx08;
+                z[3] = (uint)cc;
+                cc >>= 32;
+                if (cc != 0)
+                {
+                    cc += (long)z[4];
+                    z[4] = (uint)cc;
+                    cc >>= 32;
+                    cc += (long)z[5];
+                    z[5] = (uint)cc;
+                    cc >>= 32;
+                    cc += (long)z[6];
+                    z[6] = (uint)cc;
+                    cc >>= 32;
+                }
+                cc += (long)z[7] + xx08;
+                z[7] = (uint)cc;
+                cc >>= 32;
+
+                Debug.Assert(cc == 0 || cc == 1);
+            }
+
+            if (cc != 0 || (z[7] >= P7 && Nat256.Gte(z, P)))
+            {
+                AddPInvTo(z);
+            }
+        }
+
+        public static void Square(uint[] x, uint[] z)
+        {
+            uint[] tt = Nat256.CreateExt();
+            Nat256.Square(x, tt);
+            Reduce(tt, z);
+        }
+
+        public static void SquareN(uint[] x, int n, uint[] z)
+        {
+            Debug.Assert(n > 0);
+
+            uint[] tt = Nat256.CreateExt();
+            Nat256.Square(x, tt);
+            Reduce(tt, z);
+
+            while (--n > 0)
+            {
+                Nat256.Square(z, tt);
+                Reduce(tt, z);
+            }
+        }
+
+        public static void Subtract(uint[] x, uint[] y, uint[] z)
+        {
+            int c = Nat256.Sub(x, y, z);
+            if (c != 0)
+            {
+                SubPInvFrom(z);
+            }
+        }
+
+        public static void SubtractExt(uint[] xx, uint[] yy, uint[] zz)
+        {
+            int c = Nat.Sub(16, xx, yy, zz);
+            if (c != 0)
+            {
+                Nat.AddTo(16, PExt, zz);
+            }
+        }
+
+        public static void Twice(uint[] x, uint[] z)
+        {
+            uint c = Nat.ShiftUpBit(8, x, 0, z);
+            if (c != 0 || (z[7] >= P7 && Nat256.Gte(z, P)))
+            {
+                AddPInvTo(z);
+            }
+        }
+
+        private static void AddPInvTo(uint[] z)
+        {
+            long c = (long)z[0] + 1;
+            z[0] = (uint)c;
+            c >>= 32;
+            if (c != 0)
+            {
+                c += (long)z[1];
+                z[1] = (uint)c;
+                c >>= 32;
+            }
+            c += (long)z[2] - 1;
+            z[2] = (uint)c;
+            c >>= 32;
+            c += (long)z[3] + 1;
+            z[3] = (uint)c;
+            c >>= 32;
+            if (c != 0)
+            {
+                c += (long)z[4];
+                z[4] = (uint)c;
+                c >>= 32;
+                c += (long)z[5];
+                z[5] = (uint)c;
+                c >>= 32;
+                c += (long)z[6];
+                z[6] = (uint)c;
+                c >>= 32;
+            }
+            c += (long)z[7] + 1;
+            z[7] = (uint)c;
+            //c >>= 32;
+        }
+
+        private static void SubPInvFrom(uint[] z)
+        {
+            long c = (long)z[0] - 1;
+            z[0] = (uint)c;
+            c >>= 32;
+            if (c != 0)
+            {
+                c += (long)z[1];
+                z[1] = (uint)c;
+                c >>= 32;
+            }
+            c += (long)z[2] + 1;
+            z[2] = (uint)c;
+            c >>= 32;
+            c += (long)z[3] - 1;
+            z[3] = (uint)c;
+            c >>= 32;
+            if (c != 0)
+            {
+                c += (long)z[4];
+                z[4] = (uint)c;
+                c >>= 32;
+                c += (long)z[5];
+                z[5] = (uint)c;
+                c >>= 32;
+                c += (long)z[6];
+                z[6] = (uint)c;
+                c >>= 32;
+            }
+            c += (long)z[7] - 1;
+            z[7] = (uint)c;
+            //c >>= 32;
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/gm/SM2P256V1Field.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 641e3afe0dc583148b27346717c6c185
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/gm/SM2P256V1FieldElement.cs

@@ -0,0 +1,216 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities.Encoders;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.GM
+{
+    internal class SM2P256V1FieldElement
+        : AbstractFpFieldElement
+    {
+        public static readonly BigInteger Q = new BigInteger(1,
+            Hex.DecodeStrict("FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00000000FFFFFFFFFFFFFFFF"));
+
+        protected internal readonly uint[] x;
+
+        public SM2P256V1FieldElement(BigInteger x)
+        {
+            if (x == null || x.SignValue < 0 || x.CompareTo(Q) >= 0)
+                throw new ArgumentException("value invalid for SM2P256V1FieldElement", "x");
+
+            this.x = SM2P256V1Field.FromBigInteger(x);
+        }
+
+        public SM2P256V1FieldElement()
+        {
+            this.x = Nat256.Create();
+        }
+
+        protected internal SM2P256V1FieldElement(uint[] x)
+        {
+            this.x = x;
+        }
+
+        public override bool IsZero
+        {
+            get { return Nat256.IsZero(x); }
+        }
+
+        public override bool IsOne
+        {
+            get { return Nat256.IsOne(x); }
+        }
+
+        public override bool TestBitZero()
+        {
+            return Nat256.GetBit(x, 0) == 1;
+        }
+
+        public override BigInteger ToBigInteger()
+        {
+            return Nat256.ToBigInteger(x);
+        }
+
+        public override string FieldName
+        {
+            get { return "SM2P256V1Field"; }
+        }
+
+        public override int FieldSize
+        {
+            get { return Q.BitLength; }
+        }
+
+        public override ECFieldElement Add(ECFieldElement b)
+        {
+            uint[] z = Nat256.Create();
+            SM2P256V1Field.Add(x, ((SM2P256V1FieldElement)b).x, z);
+            return new SM2P256V1FieldElement(z);
+        }
+
+        public override ECFieldElement AddOne()
+        {
+            uint[] z = Nat256.Create();
+            SM2P256V1Field.AddOne(x, z);
+            return new SM2P256V1FieldElement(z);
+        }
+
+        public override ECFieldElement Subtract(ECFieldElement b)
+        {
+            uint[] z = Nat256.Create();
+            SM2P256V1Field.Subtract(x, ((SM2P256V1FieldElement)b).x, z);
+            return new SM2P256V1FieldElement(z);
+        }
+
+        public override ECFieldElement Multiply(ECFieldElement b)
+        {
+            uint[] z = Nat256.Create();
+            SM2P256V1Field.Multiply(x, ((SM2P256V1FieldElement)b).x, z);
+            return new SM2P256V1FieldElement(z);
+        }
+
+        public override ECFieldElement Divide(ECFieldElement b)
+        {
+            //return Multiply(b.Invert());
+            uint[] z = Nat256.Create();
+            SM2P256V1Field.Inv(((SM2P256V1FieldElement)b).x, z);
+            SM2P256V1Field.Multiply(z, x, z);
+            return new SM2P256V1FieldElement(z);
+        }
+
+        public override ECFieldElement Negate()
+        {
+            uint[] z = Nat256.Create();
+            SM2P256V1Field.Negate(x, z);
+            return new SM2P256V1FieldElement(z);
+        }
+
+        public override ECFieldElement Square()
+        {
+            uint[] z = Nat256.Create();
+            SM2P256V1Field.Square(x, z);
+            return new SM2P256V1FieldElement(z);
+        }
+
+        public override ECFieldElement Invert()
+        {
+            uint[] z = Nat256.Create();
+            SM2P256V1Field.Inv(x, z);
+            return new SM2P256V1FieldElement(z);
+        }
+
+        /**
+         * return a sqrt root - the routine verifies that the calculation returns the right value - if
+         * none exists it returns null.
+         */
+        public override ECFieldElement Sqrt()
+        {
+            /*
+             * Raise this element to the exponent 2^254 - 2^222 - 2^94 + 2^62
+             *
+             * Breaking up the exponent's binary representation into "repunits", we get:
+             * { 31 1s } { 1 0s } { 128 1s } { 31 0s } { 1 1s } { 62 0s }
+             *
+             * We use an addition chain for the beginning: [1], 2, 3, 6, 12, [24], 30, [31] 
+             */
+
+            uint[] x1 = this.x;
+            if (Nat256.IsZero(x1) || Nat256.IsOne(x1))
+            {
+                return this;
+            }
+
+            uint[] x2 = Nat256.Create();
+            SM2P256V1Field.Square(x1, x2);
+            SM2P256V1Field.Multiply(x2, x1, x2);
+            uint[] x4 = Nat256.Create();
+            SM2P256V1Field.SquareN(x2, 2, x4);
+            SM2P256V1Field.Multiply(x4, x2, x4);
+            uint[] x6 = Nat256.Create();
+            SM2P256V1Field.SquareN(x4, 2, x6);
+            SM2P256V1Field.Multiply(x6, x2, x6);
+            uint[] x12 = x2;
+            SM2P256V1Field.SquareN(x6, 6, x12);
+            SM2P256V1Field.Multiply(x12, x6, x12);
+            uint[] x24 = Nat256.Create();
+            SM2P256V1Field.SquareN(x12, 12, x24);
+            SM2P256V1Field.Multiply(x24, x12, x24);
+            uint[] x30 = x12;
+            SM2P256V1Field.SquareN(x24, 6, x30);
+            SM2P256V1Field.Multiply(x30, x6, x30);
+            uint[] x31 = x6;
+            SM2P256V1Field.Square(x30, x31);
+            SM2P256V1Field.Multiply(x31, x1, x31);
+
+            uint[] t1 = x24;
+            SM2P256V1Field.SquareN(x31, 31, t1);
+
+            uint[] x62 = x30;
+            SM2P256V1Field.Multiply(t1, x31, x62);
+
+            SM2P256V1Field.SquareN(t1, 32, t1);
+            SM2P256V1Field.Multiply(t1, x62, t1);
+            SM2P256V1Field.SquareN(t1, 62, t1);
+            SM2P256V1Field.Multiply(t1, x62, t1);
+            SM2P256V1Field.SquareN(t1, 4, t1);
+            SM2P256V1Field.Multiply(t1, x4, t1);
+            SM2P256V1Field.SquareN(t1, 32, t1);
+            SM2P256V1Field.Multiply(t1, x1, t1);
+            SM2P256V1Field.SquareN(t1, 62, t1);
+
+            uint[] t2 = x4;
+            SM2P256V1Field.Square(t1, t2);
+
+            return Nat256.Eq(x1, t2) ? new SM2P256V1FieldElement(t1) : null;
+        }
+
+        public override bool Equals(object obj)
+        {
+            return Equals(obj as SM2P256V1FieldElement);
+        }
+
+        public override bool Equals(ECFieldElement other)
+        {
+            return Equals(other as SM2P256V1FieldElement);
+        }
+
+        public virtual bool Equals(SM2P256V1FieldElement other)
+        {
+            if (this == other)
+                return true;
+            if (null == other)
+                return false;
+            return Nat256.Eq(x, other.x);
+        }
+
+        public override int GetHashCode()
+        {
+            return Q.GetHashCode() ^ Arrays.GetHashCode(x, 0, 8);
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/gm/SM2P256V1FieldElement.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 78e1ffe95a089cd41bcf8fd1fbde9440
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/gm/SM2P256V1Point.cs

@@ -0,0 +1,249 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.GM
+{
+    internal class SM2P256V1Point
+        : AbstractFpPoint
+    {
+        internal SM2P256V1Point(ECCurve curve, ECFieldElement x, ECFieldElement y)
+            : base(curve, x, y)
+        {
+        }
+
+        internal SM2P256V1Point(ECCurve curve, ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)
+            : base(curve, x, y, zs)
+        {
+        }
+
+        protected override ECPoint Detach()
+        {
+            return new SM2P256V1Point(null, AffineXCoord, AffineYCoord);
+        }
+
+        public override ECPoint Add(ECPoint b)
+        {
+            if (this.IsInfinity)
+                return b;
+            if (b.IsInfinity)
+                return this;
+            if (this == b)
+                return Twice();
+
+            ECCurve curve = this.Curve;
+
+            SM2P256V1FieldElement X1 = (SM2P256V1FieldElement)this.RawXCoord, Y1 = (SM2P256V1FieldElement)this.RawYCoord;
+            SM2P256V1FieldElement X2 = (SM2P256V1FieldElement)b.RawXCoord, Y2 = (SM2P256V1FieldElement)b.RawYCoord;
+
+            SM2P256V1FieldElement Z1 = (SM2P256V1FieldElement)this.RawZCoords[0];
+            SM2P256V1FieldElement Z2 = (SM2P256V1FieldElement)b.RawZCoords[0];
+
+            uint c;
+            uint[] tt1 = Nat256.CreateExt();
+            uint[] t2 = Nat256.Create();
+            uint[] t3 = Nat256.Create();
+            uint[] t4 = Nat256.Create();
+
+            bool Z1IsOne = Z1.IsOne;
+            uint[] U2, S2;
+            if (Z1IsOne)
+            {
+                U2 = X2.x;
+                S2 = Y2.x;
+            }
+            else
+            {
+                S2 = t3;
+                SM2P256V1Field.Square(Z1.x, S2);
+
+                U2 = t2;
+                SM2P256V1Field.Multiply(S2, X2.x, U2);
+
+                SM2P256V1Field.Multiply(S2, Z1.x, S2);
+                SM2P256V1Field.Multiply(S2, Y2.x, S2);
+            }
+
+            bool Z2IsOne = Z2.IsOne;
+            uint[] U1, S1;
+            if (Z2IsOne)
+            {
+                U1 = X1.x;
+                S1 = Y1.x;
+            }
+            else
+            {
+                S1 = t4;
+                SM2P256V1Field.Square(Z2.x, S1);
+
+                U1 = tt1;
+                SM2P256V1Field.Multiply(S1, X1.x, U1);
+
+                SM2P256V1Field.Multiply(S1, Z2.x, S1);
+                SM2P256V1Field.Multiply(S1, Y1.x, S1);
+            }
+
+            uint[] H = Nat256.Create();
+            SM2P256V1Field.Subtract(U1, U2, H);
+
+            uint[] R = t2;
+            SM2P256V1Field.Subtract(S1, S2, R);
+
+            // Check if b == this or b == -this
+            if (Nat256.IsZero(H))
+            {
+                if (Nat256.IsZero(R))
+                {
+                    // this == b, i.e. this must be doubled
+                    return this.Twice();
+                }
+
+                // this == -b, i.e. the result is the point at infinity
+                return curve.Infinity;
+            }
+
+            uint[] HSquared = t3;
+            SM2P256V1Field.Square(H, HSquared);
+
+            uint[] G = Nat256.Create();
+            SM2P256V1Field.Multiply(HSquared, H, G);
+
+            uint[] V = t3;
+            SM2P256V1Field.Multiply(HSquared, U1, V);
+
+            SM2P256V1Field.Negate(G, G);
+            Nat256.Mul(S1, G, tt1);
+
+            c = Nat256.AddBothTo(V, V, G);
+            SM2P256V1Field.Reduce32(c, G);
+
+            SM2P256V1FieldElement X3 = new SM2P256V1FieldElement(t4);
+            SM2P256V1Field.Square(R, X3.x);
+            SM2P256V1Field.Subtract(X3.x, G, X3.x);
+
+            SM2P256V1FieldElement Y3 = new SM2P256V1FieldElement(G);
+            SM2P256V1Field.Subtract(V, X3.x, Y3.x);
+            SM2P256V1Field.MultiplyAddToExt(Y3.x, R, tt1);
+            SM2P256V1Field.Reduce(tt1, Y3.x);
+
+            SM2P256V1FieldElement Z3 = new SM2P256V1FieldElement(H);
+            if (!Z1IsOne)
+            {
+                SM2P256V1Field.Multiply(Z3.x, Z1.x, Z3.x);
+            }
+            if (!Z2IsOne)
+            {
+                SM2P256V1Field.Multiply(Z3.x, Z2.x, Z3.x);
+            }
+
+            ECFieldElement[] zs = new ECFieldElement[]{ Z3 };
+
+            return new SM2P256V1Point(curve, X3, Y3, zs);
+        }
+
+        public override ECPoint Twice()
+        {
+            if (this.IsInfinity)
+                return this;
+
+            ECCurve curve = this.Curve;
+
+            SM2P256V1FieldElement Y1 = (SM2P256V1FieldElement)this.RawYCoord;
+            if (Y1.IsZero)
+                return curve.Infinity;
+
+            SM2P256V1FieldElement X1 = (SM2P256V1FieldElement)this.RawXCoord, Z1 = (SM2P256V1FieldElement)this.RawZCoords[0];
+
+            uint c;
+            uint[] t1 = Nat256.Create();
+            uint[] t2 = Nat256.Create();
+
+            uint[] Y1Squared = Nat256.Create();
+            SM2P256V1Field.Square(Y1.x, Y1Squared);
+
+            uint[] T = Nat256.Create();
+            SM2P256V1Field.Square(Y1Squared, T);
+
+            bool Z1IsOne = Z1.IsOne;
+
+            uint[] Z1Squared = Z1.x;
+            if (!Z1IsOne)
+            {
+                Z1Squared = t2;
+                SM2P256V1Field.Square(Z1.x, Z1Squared);
+            }
+
+            SM2P256V1Field.Subtract(X1.x, Z1Squared, t1);
+
+            uint[] M = t2;
+            SM2P256V1Field.Add(X1.x, Z1Squared, M);
+            SM2P256V1Field.Multiply(M, t1, M);
+            c = Nat256.AddBothTo(M, M, M);
+            SM2P256V1Field.Reduce32(c, M);
+
+            uint[] S = Y1Squared;
+            SM2P256V1Field.Multiply(Y1Squared, X1.x, S);
+            c = Nat.ShiftUpBits(8, S, 2, 0);
+            SM2P256V1Field.Reduce32(c, S);
+
+            c = Nat.ShiftUpBits(8, T, 3, 0, t1);
+            SM2P256V1Field.Reduce32(c, t1);
+
+            SM2P256V1FieldElement X3 = new SM2P256V1FieldElement(T);
+            SM2P256V1Field.Square(M, X3.x);
+            SM2P256V1Field.Subtract(X3.x, S, X3.x);
+            SM2P256V1Field.Subtract(X3.x, S, X3.x);
+
+            SM2P256V1FieldElement Y3 = new SM2P256V1FieldElement(S);
+            SM2P256V1Field.Subtract(S, X3.x, Y3.x);
+            SM2P256V1Field.Multiply(Y3.x, M, Y3.x);
+            SM2P256V1Field.Subtract(Y3.x, t1, Y3.x);
+
+            SM2P256V1FieldElement Z3 = new SM2P256V1FieldElement(M);
+            SM2P256V1Field.Twice(Y1.x, Z3.x);
+            if (!Z1IsOne)
+            {
+                SM2P256V1Field.Multiply(Z3.x, Z1.x, Z3.x);
+            }
+
+            return new SM2P256V1Point(curve, X3, Y3, new ECFieldElement[]{ Z3 });
+        }
+
+        public override ECPoint TwicePlus(ECPoint b)
+        {
+            if (this == b)
+                return ThreeTimes();
+            if (this.IsInfinity)
+                return b;
+            if (b.IsInfinity)
+                return Twice();
+
+            ECFieldElement Y1 = this.RawYCoord;
+            if (Y1.IsZero)
+                return b;
+
+            return Twice().Add(b);
+        }
+
+        public override ECPoint ThreeTimes()
+        {
+            if (this.IsInfinity || this.RawYCoord.IsZero)
+                return this;
+
+            // NOTE: Be careful about recursions between TwicePlus and ThreeTimes
+            return Twice().Add(this);
+        }
+
+        public override ECPoint Negate()
+        {
+            if (IsInfinity)
+                return this;
+
+            return new SM2P256V1Point(Curve, RawXCoord, RawYCoord.Negate(), RawZCoords);
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/gm/SM2P256V1Point.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 9b1d26c8aa2f6d74785ce58e201217f2
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 1ec1640b499c9e044a1564cdadc1975c
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP128R1Curve.cs

@@ -0,0 +1,175 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities.Encoders;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP128R1Curve
+        : AbstractFpCurve
+    {
+        public static readonly BigInteger q = SecP128R1FieldElement.Q;
+
+        private const int SECP128R1_DEFAULT_COORDS = COORD_JACOBIAN;
+        private const int SECP128R1_FE_INTS = 4;
+        private static readonly ECFieldElement[] SECP128R1_AFFINE_ZS = new ECFieldElement[] { new SecP128R1FieldElement(BigInteger.One) }; 
+
+        protected readonly SecP128R1Point m_infinity;
+
+        public SecP128R1Curve()
+            : base(q)
+        {
+            this.m_infinity = new SecP128R1Point(this, null, null);
+
+            this.m_a = FromBigInteger(new BigInteger(1,
+                Hex.DecodeStrict("FFFFFFFDFFFFFFFFFFFFFFFFFFFFFFFC")));
+            this.m_b = FromBigInteger(new BigInteger(1,
+                Hex.DecodeStrict("E87579C11079F43DD824993C2CEE5ED3")));
+            this.m_order = new BigInteger(1, Hex.DecodeStrict("FFFFFFFE0000000075A30D1B9038A115"));
+            this.m_cofactor = BigInteger.One;
+
+            this.m_coord = SECP128R1_DEFAULT_COORDS;
+        }
+
+        protected override ECCurve CloneCurve()
+        {
+            return new SecP128R1Curve();
+        }
+
+        public override bool SupportsCoordinateSystem(int coord)
+        {
+            switch (coord)
+            {
+            case COORD_JACOBIAN:
+                return true;
+            default:
+                return false;
+            }
+        }
+
+        public virtual BigInteger Q
+        {
+            get { return q; }
+        }
+
+        public override ECPoint Infinity
+        {
+            get { return m_infinity; }
+        }
+
+        public override int FieldSize
+        {
+            get { return q.BitLength; }
+        }
+
+        public override ECFieldElement FromBigInteger(BigInteger x)
+        {
+            return new SecP128R1FieldElement(x);
+        }
+
+        protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y)
+        {
+            return new SecP128R1Point(this, x, y);
+        }
+
+        protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)
+        {
+            return new SecP128R1Point(this, x, y, zs);
+        }
+
+        public override ECLookupTable CreateCacheSafeLookupTable(ECPoint[] points, int off, int len)
+        {
+            uint[] table = new uint[len * SECP128R1_FE_INTS * 2];
+            {
+                int pos = 0;
+                for (int i = 0; i < len; ++i)
+                {
+                    ECPoint p = points[off + i];
+                    Nat128.Copy(((SecP128R1FieldElement)p.RawXCoord).x, 0, table, pos); pos += SECP128R1_FE_INTS;
+                    Nat128.Copy(((SecP128R1FieldElement)p.RawYCoord).x, 0, table, pos); pos += SECP128R1_FE_INTS;
+                }
+            }
+
+            return new SecP128R1LookupTable(this, table, len);
+        }
+
+        public override ECFieldElement RandomFieldElement(SecureRandom r)
+        {
+            uint[] x = Nat128.Create();
+            SecP128R1Field.Random(r, x);
+            return new SecP128R1FieldElement(x);
+        }
+
+        public override ECFieldElement RandomFieldElementMult(SecureRandom r)
+        {
+            uint[] x = Nat128.Create();
+            SecP128R1Field.RandomMult(r, x);
+            return new SecP128R1FieldElement(x);
+        }
+
+        private class SecP128R1LookupTable
+            : AbstractECLookupTable
+        {
+            private readonly SecP128R1Curve m_outer;
+            private readonly uint[] m_table;
+            private readonly int m_size;
+
+            internal SecP128R1LookupTable(SecP128R1Curve outer, uint[] table, int size)
+            {
+                this.m_outer = outer;
+                this.m_table = table;
+                this.m_size = size;
+            }
+
+            public override int Size
+            {
+                get { return m_size; }
+            }
+
+            public override ECPoint Lookup(int index)
+            {
+                uint[] x = Nat128.Create(), y = Nat128.Create();
+                int pos = 0;
+
+                for (int i = 0; i < m_size; ++i)
+                {
+                    uint MASK = (uint)(((i ^ index) - 1) >> 31);
+
+                    for (int j = 0; j < SECP128R1_FE_INTS; ++j)
+                    {
+                        x[j] ^= m_table[pos + j] & MASK;
+                        y[j] ^= m_table[pos + SECP128R1_FE_INTS + j] & MASK;
+                    }
+
+                    pos += (SECP128R1_FE_INTS * 2);
+                }
+
+                return CreatePoint(x, y);
+            }
+
+            public override ECPoint LookupVar(int index)
+            {
+                uint[] x = Nat128.Create(), y = Nat128.Create();
+                int pos = index * SECP128R1_FE_INTS * 2;
+
+                for (int j = 0; j < SECP128R1_FE_INTS; ++j)
+                {
+                    x[j] = m_table[pos + j];
+                    y[j] = m_table[pos + SECP128R1_FE_INTS + j];
+                }
+
+                return CreatePoint(x, y);
+            }
+
+            private ECPoint CreatePoint(uint[] x, uint[] y)
+            {
+                return m_outer.CreateRawPoint(new SecP128R1FieldElement(x), new SecP128R1FieldElement(y), SECP128R1_AFFINE_ZS);
+            }
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP128R1Curve.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 89445e594db6ebf48a2bc80814ac22a1
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP128R1Field.cs

@@ -0,0 +1,265 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+using System.Diagnostics;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto.Utilities;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP128R1Field
+    {
+        // 2^128 - 2^97 - 1
+        internal static readonly uint[] P = new uint[]{ 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFD };
+        private static readonly uint[] PExt = new uint[]{ 0x00000001, 0x00000000, 0x00000000, 0x00000004, 0xFFFFFFFE,
+            0xFFFFFFFF, 0x00000003, 0xFFFFFFFC };
+        private static readonly uint[] PExtInv = new uint[]{ 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFB,
+            0x00000001, 0x00000000, 0xFFFFFFFC, 0x00000003 };
+        private const uint P3 = 0xFFFFFFFD;
+        private const uint PExt7 = 0xFFFFFFFC;
+
+        public static void Add(uint[] x, uint[] y, uint[] z)
+        {
+            uint c = Nat128.Add(x, y, z);
+            if (c != 0 || (z[3] >= P3 && Nat128.Gte(z, P)))
+            {
+                AddPInvTo(z);
+            }
+        }
+
+        public static void AddExt(uint[] xx, uint[] yy, uint[] zz)
+        {
+            uint c = Nat256.Add(xx, yy, zz);
+            if (c != 0 || (zz[7] >= PExt7 && Nat256.Gte(zz, PExt)))
+            {
+                Nat.AddTo(PExtInv.Length, PExtInv, zz);
+            }
+        }
+
+        public static void AddOne(uint[] x, uint[] z)
+        {
+            uint c = Nat.Inc(4, x, z);
+            if (c != 0 || (z[3] >= P3 && Nat128.Gte(z, P)))
+            {
+                AddPInvTo(z);
+            }
+        }
+
+        public static uint[] FromBigInteger(BigInteger x)
+        {
+            uint[] z = Nat.FromBigInteger(128, x);
+            if (z[3] >= P3 && Nat128.Gte(z, P))
+            {
+                Nat128.SubFrom(P, z);
+            }
+            return z;
+        }
+
+        public static void Half(uint[] x, uint[] z)
+        {
+            if ((x[0] & 1) == 0)
+            {
+                Nat.ShiftDownBit(4, x, 0, z);
+            }
+            else
+            {
+                uint c = Nat128.Add(x, P, z);
+                Nat.ShiftDownBit(4, z, c);
+            }
+        }
+
+        public static void Inv(uint[] x, uint[] z)
+        {
+            Mod.CheckedModOddInverse(P, x, z);
+        }
+
+        public static int IsZero(uint[] x)
+        {
+            uint d = 0;
+            for (int i = 0; i < 4; ++i)
+            {
+                d |= x[i];
+            }
+            d = (d >> 1) | (d & 1);
+            return ((int)d - 1) >> 31;
+        }
+
+        public static void Multiply(uint[] x, uint[] y, uint[] z)
+        {
+            uint[] tt = Nat128.CreateExt();
+            Nat128.Mul(x, y, tt);
+            Reduce(tt, z);
+        }
+
+        public static void MultiplyAddToExt(uint[] x, uint[] y, uint[] zz)
+        {
+            uint c = Nat128.MulAddTo(x, y, zz);
+            if (c != 0 || (zz[7] >= PExt7 && Nat256.Gte(zz, PExt)))
+            {
+                Nat.AddTo(PExtInv.Length, PExtInv, zz);
+            }
+        }
+
+        public static void Negate(uint[] x, uint[] z)
+        {
+            if (0 != IsZero(x))
+            {
+                Nat128.Sub(P, P, z);
+            }
+            else
+            {
+                Nat128.Sub(P, x, z);
+            }
+        }
+
+        public static void Random(SecureRandom r, uint[] z)
+        {
+            byte[] bb = new byte[4 * 4];
+            do
+            {
+                r.NextBytes(bb);
+                Pack.LE_To_UInt32(bb, 0, z, 0, 4);
+            }
+            while (0 == Nat.LessThan(4, z, P));
+        }
+
+        public static void RandomMult(SecureRandom r, uint[] z)
+        {
+            do
+            {
+                Random(r, z);
+            }
+            while (0 != IsZero(z));
+        }
+
+        public static void Reduce(uint[] xx, uint[] z)
+        {
+            ulong x0 = xx[0], x1 = xx[1], x2 = xx[2], x3 = xx[3];
+            ulong x4 = xx[4], x5 = xx[5], x6 = xx[6], x7 = xx[7];
+
+            x3 += x7; x6 += (x7 << 1);
+            x2 += x6; x5 += (x6 << 1);
+            x1 += x5; x4 += (x5 << 1);
+            x0 += x4; x3 += (x4 << 1);
+
+            z[0] = (uint)x0; x1 += (x0 >> 32);
+            z[1] = (uint)x1; x2 += (x1 >> 32);
+            z[2] = (uint)x2; x3 += (x2 >> 32);
+            z[3] = (uint)x3;
+
+            Reduce32((uint)(x3 >> 32), z);
+        }
+
+        public static void Reduce32(uint x, uint[] z)
+        {
+            while (x != 0)
+            {
+                ulong c, x4 = x;
+    
+                c = (ulong)z[0] + x4;
+                z[0] = (uint)c; c >>= 32;
+                if (c != 0)
+                {
+                    c += (ulong)z[1];
+                    z[1] = (uint)c; c >>= 32;
+                    c += (ulong)z[2];
+                    z[2] = (uint)c; c >>= 32;
+                }
+                c += (ulong)z[3] + (x4 << 1);
+                z[3] = (uint)c; c >>= 32;
+
+                Debug.Assert(c >= 0 && c <= 2);
+
+                x = (uint)c;
+            }
+
+            if (z[3] >= P3 && Nat128.Gte(z, P))
+            {
+                AddPInvTo(z);
+            }
+        }
+
+        public static void Square(uint[] x, uint[] z)
+        {
+            uint[] tt = Nat128.CreateExt();
+            Nat128.Square(x, tt);
+            Reduce(tt, z);
+        }
+
+        public static void SquareN(uint[] x, int n, uint[] z)
+        {
+            Debug.Assert(n > 0);
+
+            uint[] tt = Nat128.CreateExt();
+            Nat128.Square(x, tt);
+            Reduce(tt, z);
+
+            while (--n > 0)
+            {
+                Nat128.Square(z, tt);
+                Reduce(tt, z);
+            }
+        }
+
+        public static void Subtract(uint[] x, uint[] y, uint[] z)
+        {
+            int c = Nat128.Sub(x, y, z);
+            if (c != 0)
+            {
+                SubPInvFrom(z);
+            }
+        }
+
+        public static void SubtractExt(uint[] xx, uint[] yy, uint[] zz)
+        {
+            int c = Nat.Sub(10, xx, yy, zz);
+            if (c != 0)
+            {
+                Nat.SubFrom(PExtInv.Length, PExtInv, zz);
+            }
+        }
+
+        public static void Twice(uint[] x, uint[] z)
+        {
+            uint c = Nat.ShiftUpBit(4, x, 0, z);
+            if (c != 0 || (z[3] >= P3 && Nat128.Gte(z, P)))
+            {
+                AddPInvTo(z);
+            }
+        }
+
+        private static void AddPInvTo(uint[] z)
+        {
+            long c = (long)z[0] + 1;
+            z[0] = (uint)c; c >>= 32;
+            if (c != 0)
+            {
+                c += (long)z[1];
+                z[1] = (uint)c; c >>= 32;
+                c += (long)z[2];
+                z[2] = (uint)c; c >>= 32;
+            }
+            c += (long)z[3] + 2;
+            z[3] = (uint)c;
+        }
+
+        private static void SubPInvFrom(uint[] z)
+        {
+            long c = (long)z[0] - 1;
+            z[0] = (uint)c; c >>= 32;
+            if (c != 0)
+            {
+                c += (long)z[1];
+                z[1] = (uint)c; c >>= 32;
+                c += (long)z[2];
+                z[2] = (uint)c; c >>= 32;
+            }
+            c += (long)z[3] - 2;
+            z[3] = (uint)c;
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP128R1Field.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 8d3cfee2e6a54024a900a084075280c8
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP128R1FieldElement.cs

@@ -0,0 +1,203 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities.Encoders;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP128R1FieldElement
+        : AbstractFpFieldElement
+    {
+        public static readonly BigInteger Q = new BigInteger(1,
+            Hex.DecodeStrict("FFFFFFFDFFFFFFFFFFFFFFFFFFFFFFFF"));
+
+        protected internal readonly uint[] x;
+
+        public SecP128R1FieldElement(BigInteger x)
+        {
+            if (x == null || x.SignValue < 0 || x.CompareTo(Q) >= 0)
+                throw new ArgumentException("value invalid for SecP128R1FieldElement", "x");
+
+            this.x = SecP128R1Field.FromBigInteger(x);
+        }
+
+        public SecP128R1FieldElement()
+        {
+            this.x = Nat128.Create();
+        }
+
+        protected internal SecP128R1FieldElement(uint[] x)
+        {
+            this.x = x;
+        }
+
+        public override bool IsZero
+        {
+            get { return Nat128.IsZero(x); }
+        }
+
+        public override bool IsOne
+        {
+            get { return Nat128.IsOne(x); }
+        }
+
+        public override bool TestBitZero()
+        {
+            return Nat128.GetBit(x, 0) == 1;
+        }
+
+        public override BigInteger ToBigInteger()
+        {
+            return Nat128.ToBigInteger(x);
+        }
+
+        public override string FieldName
+        {
+            get { return "SecP128R1Field"; }
+        }
+
+        public override int FieldSize
+        {
+            get { return Q.BitLength; }
+        }
+
+        public override ECFieldElement Add(ECFieldElement b)
+        {
+            uint[] z = Nat128.Create();
+            SecP128R1Field.Add(x, ((SecP128R1FieldElement)b).x, z);
+            return new SecP128R1FieldElement(z);
+        }
+
+        public override ECFieldElement AddOne()
+        {
+            uint[] z = Nat128.Create();
+            SecP128R1Field.AddOne(x, z);
+            return new SecP128R1FieldElement(z);
+        }
+
+        public override ECFieldElement Subtract(ECFieldElement b)
+        {
+            uint[] z = Nat128.Create();
+            SecP128R1Field.Subtract(x, ((SecP128R1FieldElement)b).x, z);
+            return new SecP128R1FieldElement(z);
+        }
+
+        public override ECFieldElement Multiply(ECFieldElement b)
+        {
+            uint[] z = Nat128.Create();
+            SecP128R1Field.Multiply(x, ((SecP128R1FieldElement)b).x, z);
+            return new SecP128R1FieldElement(z);
+        }
+
+        public override ECFieldElement Divide(ECFieldElement b)
+        {
+    //        return multiply(b.invert());
+            uint[] z = Nat128.Create();
+            SecP128R1Field.Inv(((SecP128R1FieldElement)b).x, z);
+            SecP128R1Field.Multiply(z, x, z);
+            return new SecP128R1FieldElement(z);
+        }
+
+        public override ECFieldElement Negate()
+        {
+            uint[] z = Nat128.Create();
+            SecP128R1Field.Negate(x, z);
+            return new SecP128R1FieldElement(z);
+        }
+
+        public override ECFieldElement Square()
+        {
+            uint[] z = Nat128.Create();
+            SecP128R1Field.Square(x, z);
+            return new SecP128R1FieldElement(z);
+        }
+
+        public override ECFieldElement Invert()
+        {
+            uint[] z = Nat128.Create();
+            SecP128R1Field.Inv(x, z);
+            return new SecP128R1FieldElement(z);
+        }
+
+        // D.1.4 91
+        /**
+         * return a sqrt root - the routine verifies that the calculation returns the right value - if
+         * none exists it returns null.
+         */
+        public override ECFieldElement Sqrt()
+        {
+            /*
+             * Raise this element to the exponent 2^126 - 2^95
+             * 
+             * Breaking up the exponent's binary representation into "repunits", we get:
+             *     { 31 1s } { 95 0s }
+             * 
+             * Therefore we need an addition chain containing 31 (the length of the repunit) We use:
+             *     1, 2, 4, 8, 10, 20, 30, [31] 
+             */
+
+            uint[] x1 = this.x;
+            if (Nat128.IsZero(x1) || Nat128.IsOne(x1))
+                return this;
+
+            uint[] x2 = Nat128.Create();
+            SecP128R1Field.Square(x1, x2);
+            SecP128R1Field.Multiply(x2, x1, x2);
+            uint[] x4 = Nat128.Create();
+            SecP128R1Field.SquareN(x2, 2, x4);
+            SecP128R1Field.Multiply(x4, x2, x4);
+            uint[] x8 = Nat128.Create();
+            SecP128R1Field.SquareN(x4, 4, x8);
+            SecP128R1Field.Multiply(x8, x4, x8);
+            uint[] x10 = x4;
+            SecP128R1Field.SquareN(x8, 2, x10);
+            SecP128R1Field.Multiply(x10, x2, x10);
+            uint[] x20 = x2;
+            SecP128R1Field.SquareN(x10, 10, x20);
+            SecP128R1Field.Multiply(x20, x10, x20);
+            uint[] x30 = x8;
+            SecP128R1Field.SquareN(x20, 10, x30);
+            SecP128R1Field.Multiply(x30, x10, x30);
+            uint[] x31 = x10;
+            SecP128R1Field.Square(x30, x31);
+            SecP128R1Field.Multiply(x31, x1, x31);
+
+            uint[] t1 = x31;
+            SecP128R1Field.SquareN(t1, 95, t1);
+
+            uint[] t2 = x30;
+            SecP128R1Field.Square(t1, t2);
+
+            return Nat128.Eq(x1, t2) ? new SecP128R1FieldElement(t1) : null;        
+        }
+
+        public override bool Equals(object obj)
+        {
+            return Equals(obj as SecP128R1FieldElement);
+        }
+
+        public override bool Equals(ECFieldElement other)
+        {
+            return Equals(other as SecP128R1FieldElement);
+        }
+
+        public virtual bool Equals(SecP128R1FieldElement other)
+        {
+            if (this == other)
+                return true;
+            if (null == other)
+                return false;
+            return Nat128.Eq(x, other.x);
+        }
+
+        public override int GetHashCode()
+        {
+            return Q.GetHashCode() ^ Arrays.GetHashCode(x, 0, 4);
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP128R1FieldElement.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 69c28fc8275118743a6303f5213bd5ef
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP128R1Point.cs

@@ -0,0 +1,249 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP128R1Point
+        : AbstractFpPoint
+    {
+        internal SecP128R1Point(ECCurve curve, ECFieldElement x, ECFieldElement y)
+            : base(curve, x, y)
+        {
+        }
+
+        internal SecP128R1Point(ECCurve curve, ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)
+            : base(curve, x, y, zs)
+        {
+        }
+
+        protected override ECPoint Detach()
+        {
+            return new SecP128R1Point(null, AffineXCoord, AffineYCoord);
+        }
+
+        public override ECPoint Add(ECPoint b)
+        {
+            if (this.IsInfinity)
+                return b;
+            if (b.IsInfinity)
+                return this;
+            if (this == b)
+                return Twice();
+
+            ECCurve curve = this.Curve;
+
+            SecP128R1FieldElement X1 = (SecP128R1FieldElement)this.RawXCoord, Y1 = (SecP128R1FieldElement)this.RawYCoord;
+            SecP128R1FieldElement X2 = (SecP128R1FieldElement)b.RawXCoord, Y2 = (SecP128R1FieldElement)b.RawYCoord;
+
+            SecP128R1FieldElement Z1 = (SecP128R1FieldElement)this.RawZCoords[0];
+            SecP128R1FieldElement Z2 = (SecP128R1FieldElement)b.RawZCoords[0];
+
+            uint c;
+            uint[] tt1 = Nat128.CreateExt();
+            uint[] t2 = Nat128.Create();
+            uint[] t3 = Nat128.Create();
+            uint[] t4 = Nat128.Create();
+
+            bool Z1IsOne = Z1.IsOne;
+            uint[] U2, S2;
+            if (Z1IsOne)
+            {
+                U2 = X2.x;
+                S2 = Y2.x;
+            }
+            else
+            {
+                S2 = t3;
+                SecP128R1Field.Square(Z1.x, S2);
+
+                U2 = t2;
+                SecP128R1Field.Multiply(S2, X2.x, U2);
+
+                SecP128R1Field.Multiply(S2, Z1.x, S2);
+                SecP128R1Field.Multiply(S2, Y2.x, S2);
+            }
+
+            bool Z2IsOne = Z2.IsOne;
+            uint[] U1, S1;
+            if (Z2IsOne)
+            {
+                U1 = X1.x;
+                S1 = Y1.x;
+            }
+            else
+            {
+                S1 = t4;
+                SecP128R1Field.Square(Z2.x, S1);
+
+                U1 = tt1;
+                SecP128R1Field.Multiply(S1, X1.x, U1);
+
+                SecP128R1Field.Multiply(S1, Z2.x, S1);
+                SecP128R1Field.Multiply(S1, Y1.x, S1);
+            }
+
+            uint[] H = Nat128.Create();
+            SecP128R1Field.Subtract(U1, U2, H);
+
+            uint[] R = t2;
+            SecP128R1Field.Subtract(S1, S2, R);
+
+            // Check if b == this or b == -this
+            if (Nat128.IsZero(H))
+            {
+                if (Nat128.IsZero(R))
+                {
+                    // this == b, i.e. this must be doubled
+                    return this.Twice();
+                }
+
+                // this == -b, i.e. the result is the point at infinity
+                return curve.Infinity;
+            }
+
+            uint[] HSquared = t3;
+            SecP128R1Field.Square(H, HSquared);
+
+            uint[] G = Nat128.Create();
+            SecP128R1Field.Multiply(HSquared, H, G);
+
+            uint[] V = t3;
+            SecP128R1Field.Multiply(HSquared, U1, V);
+
+            SecP128R1Field.Negate(G, G);
+            Nat128.Mul(S1, G, tt1);
+
+            c = Nat128.AddBothTo(V, V, G);
+            SecP128R1Field.Reduce32(c, G);
+
+            SecP128R1FieldElement X3 = new SecP128R1FieldElement(t4);
+            SecP128R1Field.Square(R, X3.x);
+            SecP128R1Field.Subtract(X3.x, G, X3.x);
+
+            SecP128R1FieldElement Y3 = new SecP128R1FieldElement(G);
+            SecP128R1Field.Subtract(V, X3.x, Y3.x);
+            SecP128R1Field.MultiplyAddToExt(Y3.x, R, tt1);
+            SecP128R1Field.Reduce(tt1, Y3.x);
+
+            SecP128R1FieldElement Z3 = new SecP128R1FieldElement(H);
+            if (!Z1IsOne)
+            {
+                SecP128R1Field.Multiply(Z3.x, Z1.x, Z3.x);
+            }
+            if (!Z2IsOne)
+            {
+                SecP128R1Field.Multiply(Z3.x, Z2.x, Z3.x);
+            }
+
+            ECFieldElement[] zs = new ECFieldElement[]{ Z3 };
+
+            return new SecP128R1Point(curve, X3, Y3, zs);
+        }
+
+        public override ECPoint Twice()
+        {
+            if (this.IsInfinity)
+                return this;
+
+            ECCurve curve = this.Curve;
+
+            SecP128R1FieldElement Y1 = (SecP128R1FieldElement)this.RawYCoord;
+            if (Y1.IsZero)
+                return curve.Infinity;
+
+            SecP128R1FieldElement X1 = (SecP128R1FieldElement)this.RawXCoord, Z1 = (SecP128R1FieldElement)this.RawZCoords[0];
+
+            uint c;
+            uint[] t1 = Nat128.Create();
+            uint[] t2 = Nat128.Create();
+
+            uint[] Y1Squared = Nat128.Create();
+            SecP128R1Field.Square(Y1.x, Y1Squared);
+
+            uint[] T = Nat128.Create();
+            SecP128R1Field.Square(Y1Squared, T);
+
+            bool Z1IsOne = Z1.IsOne;
+
+            uint[] Z1Squared = Z1.x;
+            if (!Z1IsOne)
+            {
+                Z1Squared = t2;
+                SecP128R1Field.Square(Z1.x, Z1Squared);
+            }
+
+            SecP128R1Field.Subtract(X1.x, Z1Squared, t1);
+
+            uint[] M = t2;
+            SecP128R1Field.Add(X1.x, Z1Squared, M);
+            SecP128R1Field.Multiply(M, t1, M);
+            c = Nat128.AddBothTo(M, M, M);
+            SecP128R1Field.Reduce32(c, M);
+
+            uint[] S = Y1Squared;
+            SecP128R1Field.Multiply(Y1Squared, X1.x, S);
+            c = Nat.ShiftUpBits(4, S, 2, 0);
+            SecP128R1Field.Reduce32(c, S);
+
+            c = Nat.ShiftUpBits(4, T, 3, 0, t1);
+            SecP128R1Field.Reduce32(c, t1);
+
+            SecP128R1FieldElement X3 = new SecP128R1FieldElement(T);
+            SecP128R1Field.Square(M, X3.x);
+            SecP128R1Field.Subtract(X3.x, S, X3.x);
+            SecP128R1Field.Subtract(X3.x, S, X3.x);
+
+            SecP128R1FieldElement Y3 = new SecP128R1FieldElement(S);
+            SecP128R1Field.Subtract(S, X3.x, Y3.x);
+            SecP128R1Field.Multiply(Y3.x, M, Y3.x);
+            SecP128R1Field.Subtract(Y3.x, t1, Y3.x);
+
+            SecP128R1FieldElement Z3 = new SecP128R1FieldElement(M);
+            SecP128R1Field.Twice(Y1.x, Z3.x);
+            if (!Z1IsOne)
+            {
+                SecP128R1Field.Multiply(Z3.x, Z1.x, Z3.x);
+            }
+
+            return new SecP128R1Point(curve, X3, Y3, new ECFieldElement[]{ Z3 });
+        }
+
+        public override ECPoint TwicePlus(ECPoint b)
+        {
+            if (this == b)
+                return ThreeTimes();
+            if (this.IsInfinity)
+                return b;
+            if (b.IsInfinity)
+                return Twice();
+
+            ECFieldElement Y1 = this.RawYCoord;
+            if (Y1.IsZero)
+                return b;
+
+            return Twice().Add(b);
+        }
+
+        public override ECPoint ThreeTimes()
+        {
+            if (this.IsInfinity || this.RawYCoord.IsZero)
+                return this;
+
+            // NOTE: Be careful about recursions between twicePlus and threeTimes
+            return Twice().Add(this);
+        }
+
+        public override ECPoint Negate()
+        {
+            if (IsInfinity)
+                return this;
+
+            return new SecP128R1Point(Curve, RawXCoord, RawYCoord.Negate(), RawZCoords);
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP128R1Point.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: ede02f0086365e54584f6ee4a1ae2434
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP160K1Curve.cs

@@ -0,0 +1,172 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities.Encoders;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP160K1Curve
+        : AbstractFpCurve
+    {
+        public static readonly BigInteger q = SecP160R2FieldElement.Q;
+
+        private const int SECP160K1_DEFAULT_COORDS = COORD_JACOBIAN;
+        private const int SECP160K1_FE_INTS = 5;
+        private static readonly ECFieldElement[] SECP160K1_AFFINE_ZS = new ECFieldElement[] { new SecP160R2FieldElement(BigInteger.One) };
+
+        protected readonly SecP160K1Point m_infinity;
+
+        public SecP160K1Curve()
+            : base(q)
+        {
+            this.m_infinity = new SecP160K1Point(this, null, null);
+
+            this.m_a = FromBigInteger(BigInteger.Zero);
+            this.m_b = FromBigInteger(BigInteger.ValueOf(7));
+            this.m_order = new BigInteger(1, Hex.DecodeStrict("0100000000000000000001B8FA16DFAB9ACA16B6B3"));
+            this.m_cofactor = BigInteger.One;
+            this.m_coord = SECP160K1_DEFAULT_COORDS;
+        }
+
+        protected override ECCurve CloneCurve()
+        {
+            return new SecP160K1Curve();
+        }
+
+        public override bool SupportsCoordinateSystem(int coord)
+        {
+            switch (coord)
+            {
+            case COORD_JACOBIAN:
+                return true;
+            default:
+                return false;
+            }
+        }
+
+        public virtual BigInteger Q
+        {
+            get { return q; }
+        }
+
+        public override ECPoint Infinity
+        {
+            get { return m_infinity; }
+        }
+
+        public override int FieldSize
+        {
+            get { return q.BitLength; }
+        }
+
+        public override ECFieldElement FromBigInteger(BigInteger x)
+        {
+            return new SecP160R2FieldElement(x);
+        }
+
+        protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y)
+        {
+            return new SecP160K1Point(this, x, y);
+        }
+
+        protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)
+        {
+            return new SecP160K1Point(this, x, y, zs);
+        }
+
+        public override ECLookupTable CreateCacheSafeLookupTable(ECPoint[] points, int off, int len)
+        {
+            uint[] table = new uint[len * SECP160K1_FE_INTS * 2];
+            {
+                int pos = 0;
+                for (int i = 0; i < len; ++i)
+                {
+                    ECPoint p = points[off + i];
+                    Nat160.Copy(((SecP160R2FieldElement)p.RawXCoord).x, 0, table, pos); pos += SECP160K1_FE_INTS;
+                    Nat160.Copy(((SecP160R2FieldElement)p.RawYCoord).x, 0, table, pos); pos += SECP160K1_FE_INTS;
+                }
+            }
+
+            return new SecP160K1LookupTable(this, table, len);
+        }
+
+        public override ECFieldElement RandomFieldElement(SecureRandom r)
+        {
+            uint[] x = Nat160.Create();
+            SecP160R2Field.Random(r, x);
+            return new SecP160R2FieldElement(x);
+        }
+
+        public override ECFieldElement RandomFieldElementMult(SecureRandom r)
+        {
+            uint[] x = Nat160.Create();
+            SecP160R2Field.RandomMult(r, x);
+            return new SecP160R2FieldElement(x);
+        }
+
+        private class SecP160K1LookupTable
+            : AbstractECLookupTable
+        {
+            private readonly SecP160K1Curve m_outer;
+            private readonly uint[] m_table;
+            private readonly int m_size;
+
+            internal SecP160K1LookupTable(SecP160K1Curve outer, uint[] table, int size)
+            {
+                this.m_outer = outer;
+                this.m_table = table;
+                this.m_size = size;
+            }
+
+            public override int Size
+            {
+                get { return m_size; }
+            }
+
+            public override ECPoint Lookup(int index)
+            {
+                uint[] x = Nat256.Create(), y = Nat256.Create();
+                int pos = 0;
+
+                for (int i = 0; i < m_size; ++i)
+                {
+                    uint MASK = (uint)(((i ^ index) - 1) >> 31);
+
+                    for (int j = 0; j < SECP160K1_FE_INTS; ++j)
+                    {
+                        x[j] ^= m_table[pos + j] & MASK;
+                        y[j] ^= m_table[pos + SECP160K1_FE_INTS + j] & MASK;
+                    }
+
+                    pos += (SECP160K1_FE_INTS * 2);
+                }
+
+                return CreatePoint(x, y);
+            }
+
+            public override ECPoint LookupVar(int index)
+            {
+                uint[] x = Nat256.Create(), y = Nat256.Create();
+                int pos = index * SECP160K1_FE_INTS * 2;
+
+                for (int j = 0; j < SECP160K1_FE_INTS; ++j)
+                {
+                    x[j] = m_table[pos + j];
+                    y[j] = m_table[pos + SECP160K1_FE_INTS + j];
+                }
+
+                return CreatePoint(x, y);
+            }
+
+            private ECPoint CreatePoint(uint[] x, uint[] y)
+            {
+                return m_outer.CreateRawPoint(new SecP160R2FieldElement(x), new SecP160R2FieldElement(y), SECP160K1_AFFINE_ZS);
+            }
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP160K1Curve.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: ea8333585039e43408c80fccb422d442
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP160K1Point.cs

@@ -0,0 +1,238 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP160K1Point
+        : AbstractFpPoint
+    {
+        internal SecP160K1Point(ECCurve curve, ECFieldElement x, ECFieldElement y)
+            : base(curve, x, y)
+        {
+        }
+
+        internal SecP160K1Point(ECCurve curve, ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)
+            : base(curve, x, y, zs)
+        {
+        }
+
+        protected override ECPoint Detach()
+        {
+            return new SecP160K1Point(null, AffineXCoord, AffineYCoord);
+        }
+
+        // B.3 pg 62
+        public override ECPoint Add(ECPoint b)
+        {
+            if (this.IsInfinity)
+                return b;
+            if (b.IsInfinity)
+                return this;
+            if (this == b)
+                return Twice();
+
+            ECCurve curve = this.Curve;
+
+            SecP160R2FieldElement X1 = (SecP160R2FieldElement)this.RawXCoord, Y1 = (SecP160R2FieldElement)this.RawYCoord;
+            SecP160R2FieldElement X2 = (SecP160R2FieldElement)b.RawXCoord, Y2 = (SecP160R2FieldElement)b.RawYCoord;
+
+            SecP160R2FieldElement Z1 = (SecP160R2FieldElement)this.RawZCoords[0];
+            SecP160R2FieldElement Z2 = (SecP160R2FieldElement)b.RawZCoords[0];
+
+            uint c;
+            uint[] tt1 = Nat160.CreateExt();
+            uint[] t2 = Nat160.Create();
+            uint[] t3 = Nat160.Create();
+            uint[] t4 = Nat160.Create();
+
+            bool Z1IsOne = Z1.IsOne;
+            uint[] U2, S2;
+            if (Z1IsOne)
+            {
+                U2 = X2.x;
+                S2 = Y2.x;
+            }
+            else
+            {
+                S2 = t3;
+                SecP160R2Field.Square(Z1.x, S2);
+
+                U2 = t2;
+                SecP160R2Field.Multiply(S2, X2.x, U2);
+
+                SecP160R2Field.Multiply(S2, Z1.x, S2);
+                SecP160R2Field.Multiply(S2, Y2.x, S2);
+            }
+
+            bool Z2IsOne = Z2.IsOne;
+            uint[] U1, S1;
+            if (Z2IsOne)
+            {
+                U1 = X1.x;
+                S1 = Y1.x;
+            }
+            else
+            {
+                S1 = t4;
+                SecP160R2Field.Square(Z2.x, S1);
+
+                U1 = tt1;
+                SecP160R2Field.Multiply(S1, X1.x, U1);
+
+                SecP160R2Field.Multiply(S1, Z2.x, S1);
+                SecP160R2Field.Multiply(S1, Y1.x, S1);
+            }
+
+            uint[] H = Nat160.Create();
+            SecP160R2Field.Subtract(U1, U2, H);
+
+            uint[] R = t2;
+            SecP160R2Field.Subtract(S1, S2, R);
+
+            // Check if b == this or b == -this
+            if (Nat160.IsZero(H))
+            {
+                if (Nat160.IsZero(R))
+                {
+                    // this == b, i.e. this must be doubled
+                    return this.Twice();
+                }
+
+                // this == -b, i.e. the result is the point at infinity
+                return curve.Infinity;
+            }
+
+            uint[] HSquared = t3;
+            SecP160R2Field.Square(H, HSquared);
+
+            uint[] G = Nat160.Create();
+            SecP160R2Field.Multiply(HSquared, H, G);
+
+            uint[] V = t3;
+            SecP160R2Field.Multiply(HSquared, U1, V);
+
+            SecP160R2Field.Negate(G, G);
+            Nat160.Mul(S1, G, tt1);
+
+            c = Nat160.AddBothTo(V, V, G);
+            SecP160R2Field.Reduce32(c, G);
+
+            SecP160R2FieldElement X3 = new SecP160R2FieldElement(t4);
+            SecP160R2Field.Square(R, X3.x);
+            SecP160R2Field.Subtract(X3.x, G, X3.x);
+
+            SecP160R2FieldElement Y3 = new SecP160R2FieldElement(G);
+            SecP160R2Field.Subtract(V, X3.x, Y3.x);
+            SecP160R2Field.MultiplyAddToExt(Y3.x, R, tt1);
+            SecP160R2Field.Reduce(tt1, Y3.x);
+
+            SecP160R2FieldElement Z3 = new SecP160R2FieldElement(H);
+            if (!Z1IsOne)
+            {
+                SecP160R2Field.Multiply(Z3.x, Z1.x, Z3.x);
+            }
+            if (!Z2IsOne)
+            {
+                SecP160R2Field.Multiply(Z3.x, Z2.x, Z3.x);
+            }
+
+            ECFieldElement[] zs = new ECFieldElement[] { Z3 };
+
+            return new SecP160K1Point(curve, X3, Y3, zs);
+        }
+
+        // B.3 pg 62
+        public override ECPoint Twice()
+        {
+            if (this.IsInfinity)
+                return this;
+
+            ECCurve curve = this.Curve;
+
+            SecP160R2FieldElement Y1 = (SecP160R2FieldElement)this.RawYCoord;
+            if (Y1.IsZero)
+                return curve.Infinity;
+
+            SecP160R2FieldElement X1 = (SecP160R2FieldElement)this.RawXCoord, Z1 = (SecP160R2FieldElement)this.RawZCoords[0];
+
+            uint c;
+
+            uint[] Y1Squared = Nat160.Create();
+            SecP160R2Field.Square(Y1.x, Y1Squared);
+
+            uint[] T = Nat160.Create();
+            SecP160R2Field.Square(Y1Squared, T);
+
+            uint[] M = Nat160.Create();
+            SecP160R2Field.Square(X1.x, M);
+            c = Nat160.AddBothTo(M, M, M);
+            SecP160R2Field.Reduce32(c, M);
+
+            uint[] S = Y1Squared;
+            SecP160R2Field.Multiply(Y1Squared, X1.x, S);
+            c = Nat.ShiftUpBits(5, S, 2, 0);
+            SecP160R2Field.Reduce32(c, S);
+
+            uint[] t1 = Nat160.Create();
+            c = Nat.ShiftUpBits(5, T, 3, 0, t1);
+            SecP160R2Field.Reduce32(c, t1);
+
+            SecP160R2FieldElement X3 = new SecP160R2FieldElement(T);
+            SecP160R2Field.Square(M, X3.x);
+            SecP160R2Field.Subtract(X3.x, S, X3.x);
+            SecP160R2Field.Subtract(X3.x, S, X3.x);
+
+            SecP160R2FieldElement Y3 = new SecP160R2FieldElement(S);
+            SecP160R2Field.Subtract(S, X3.x, Y3.x);
+            SecP160R2Field.Multiply(Y3.x, M, Y3.x);
+            SecP160R2Field.Subtract(Y3.x, t1, Y3.x);
+
+            SecP160R2FieldElement Z3 = new SecP160R2FieldElement(M);
+            SecP160R2Field.Twice(Y1.x, Z3.x);
+            if (!Z1.IsOne)
+            {
+                SecP160R2Field.Multiply(Z3.x, Z1.x, Z3.x);
+            }
+
+            return new SecP160K1Point(curve, X3, Y3, new ECFieldElement[] { Z3 });
+        }
+
+        public override ECPoint TwicePlus(ECPoint b)
+        {
+            if (this == b)
+                return ThreeTimes();
+            if (this.IsInfinity)
+                return b;
+            if (b.IsInfinity)
+                return Twice();
+
+            ECFieldElement Y1 = this.RawYCoord;
+            if (Y1.IsZero)
+                return b;
+
+            return Twice().Add(b);
+        }
+
+        public override ECPoint ThreeTimes()
+        {
+            if (this.IsInfinity || this.RawYCoord.IsZero)
+                return this;
+
+            // NOTE: Be careful about recursions between TwicePlus and threeTimes
+            return Twice().Add(this);
+        }
+
+        public override ECPoint Negate()
+        {
+            if (IsInfinity)
+                return this;
+
+            return new SecP160K1Point(Curve, this.RawXCoord, this.RawYCoord.Negate(), this.RawZCoords);
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP160K1Point.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 751987f4dd7ab91428967217a99fe3eb
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP160R1Curve.cs

@@ -0,0 +1,175 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities.Encoders;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP160R1Curve
+        : AbstractFpCurve
+    {
+        public static readonly BigInteger q = SecP160R1FieldElement.Q;
+
+        private const int SECP160R1_DEFAULT_COORDS = COORD_JACOBIAN;
+        private const int SECP160R1_FE_INTS = 5;
+        private static readonly ECFieldElement[] SECP160R1_AFFINE_ZS = new ECFieldElement[] { new SecP160R1FieldElement(BigInteger.One) }; 
+
+        protected readonly SecP160R1Point m_infinity;
+
+        public SecP160R1Curve()
+            : base(q)
+        {
+            this.m_infinity = new SecP160R1Point(this, null, null);
+
+            this.m_a = FromBigInteger(new BigInteger(1,
+                Hex.DecodeStrict("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF7FFFFFFC")));
+            this.m_b = FromBigInteger(new BigInteger(1,
+                Hex.DecodeStrict("1C97BEFC54BD7A8B65ACF89F81D4D4ADC565FA45")));
+            this.m_order = new BigInteger(1, Hex.DecodeStrict("0100000000000000000001F4C8F927AED3CA752257"));
+            this.m_cofactor = BigInteger.One;
+
+            this.m_coord = SECP160R1_DEFAULT_COORDS;
+        }
+
+        protected override ECCurve CloneCurve()
+        {
+            return new SecP160R1Curve();
+        }
+
+        public override  bool SupportsCoordinateSystem(int coord)
+        {
+            switch (coord)
+            {
+            case COORD_JACOBIAN:
+                return true;
+            default:
+                return false;
+            }
+        }
+
+        public virtual BigInteger Q
+        {
+            get { return q; }
+        }
+
+        public override ECPoint Infinity
+        {
+            get { return m_infinity; }
+        }
+
+        public override int FieldSize
+        {
+            get { return q.BitLength; }
+        }
+
+        public override ECFieldElement FromBigInteger(BigInteger x)
+        {
+            return new SecP160R1FieldElement(x);
+        }
+
+        protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y)
+        {
+            return new SecP160R1Point(this, x, y);
+        }
+
+        protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)
+        {
+            return new SecP160R1Point(this, x, y, zs);
+        }
+
+        public override ECLookupTable CreateCacheSafeLookupTable(ECPoint[] points, int off, int len)
+        {
+            uint[] table = new uint[len * SECP160R1_FE_INTS * 2];
+            {
+                int pos = 0;
+                for (int i = 0; i < len; ++i)
+                {
+                    ECPoint p = points[off + i];
+                    Nat160.Copy(((SecP160R1FieldElement)p.RawXCoord).x, 0, table, pos); pos += SECP160R1_FE_INTS;
+                    Nat160.Copy(((SecP160R1FieldElement)p.RawYCoord).x, 0, table, pos); pos += SECP160R1_FE_INTS;
+                }
+            }
+
+            return new SecP160R1LookupTable(this, table, len);
+        }
+
+        public override ECFieldElement RandomFieldElement(SecureRandom r)
+        {
+            uint[] x = Nat160.Create();
+            SecP160R1Field.Random(r, x);
+            return new SecP160R1FieldElement(x);
+        }
+
+        public override ECFieldElement RandomFieldElementMult(SecureRandom r)
+        {
+            uint[] x = Nat160.Create();
+            SecP160R1Field.RandomMult(r, x);
+            return new SecP160R1FieldElement(x);
+        }
+
+        private class SecP160R1LookupTable
+            : AbstractECLookupTable
+        {
+            private readonly SecP160R1Curve m_outer;
+            private readonly uint[] m_table;
+            private readonly int m_size;
+
+            internal SecP160R1LookupTable(SecP160R1Curve outer, uint[] table, int size)
+            {
+                this.m_outer = outer;
+                this.m_table = table;
+                this.m_size = size;
+            }
+
+            public override int Size
+            {
+                get { return m_size; }
+            }
+
+            public override ECPoint Lookup(int index)
+            {
+                uint[] x = Nat160.Create(), y = Nat160.Create();
+                int pos = 0;
+
+                for (int i = 0; i < m_size; ++i)
+                {
+                    uint MASK = (uint)(((i ^ index) - 1) >> 31);
+
+                    for (int j = 0; j < SECP160R1_FE_INTS; ++j)
+                    {
+                        x[j] ^= m_table[pos + j] & MASK;
+                        y[j] ^= m_table[pos + SECP160R1_FE_INTS + j] & MASK;
+                    }
+
+                    pos += (SECP160R1_FE_INTS * 2);
+                }
+
+                return CreatePoint(x, y);
+            }
+
+            public override ECPoint LookupVar(int index)
+            {
+                uint[] x = Nat160.Create(), y = Nat160.Create();
+                int pos = index * SECP160R1_FE_INTS * 2;
+
+                for (int j = 0; j < SECP160R1_FE_INTS; ++j)
+                {
+                    x[j] = m_table[pos + j];
+                    y[j] = m_table[pos + SECP160R1_FE_INTS + j];
+                }
+
+                return CreatePoint(x, y);
+            }
+
+            private ECPoint CreatePoint(uint[] x, uint[] y)
+            {
+                return m_outer.CreateRawPoint(new SecP160R1FieldElement(x), new SecP160R1FieldElement(y), SECP160R1_AFFINE_ZS);
+            }
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP160R1Curve.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 2470d39d565196048b3caa3c8e57defc
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP160R1Field.cs

@@ -0,0 +1,228 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+using System.Diagnostics;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto.Utilities;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP160R1Field
+    {
+        // 2^160 - 2^31 - 1
+        internal static readonly uint[] P = new uint[]{ 0x7FFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF };
+        private static readonly uint[] PExt = new uint[]{ 0x00000001, 0x40000001, 0x00000000, 0x00000000, 0x00000000,
+            0xFFFFFFFE, 0xFFFFFFFE, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF };
+        private static readonly uint[] PExtInv = new uint[]{ 0xFFFFFFFF, 0xBFFFFFFE, 0xFFFFFFFF, 0xFFFFFFFF,
+            0xFFFFFFFF, 0x00000001, 0x00000001 };
+        private const uint P4 = 0xFFFFFFFF;
+        private const uint PExt9 = 0xFFFFFFFF;
+        private const uint PInv = 0x80000001;
+
+        public static void Add(uint[] x, uint[] y, uint[] z)
+        {
+            uint c = Nat160.Add(x, y, z);
+            if (c != 0 || (z[4] == P4 && Nat160.Gte(z, P)))
+            {
+                Nat.AddWordTo(5, PInv, z);
+            }
+        }
+
+        public static void AddExt(uint[] xx, uint[] yy, uint[] zz)
+        {
+            uint c = Nat.Add(10, xx, yy, zz);
+            if (c != 0 || (zz[9] == PExt9 && Nat.Gte(10, zz, PExt)))
+            {
+                if (Nat.AddTo(PExtInv.Length, PExtInv, zz) != 0)
+                {
+                    Nat.IncAt(10, zz, PExtInv.Length);
+                }
+            }
+        }
+
+        public static void AddOne(uint[] x, uint[] z)
+        {
+            uint c = Nat.Inc(5, x, z);
+            if (c != 0 || (z[4] == P4 && Nat160.Gte(z, P)))
+            {
+                Nat.AddWordTo(5, PInv, z);
+            }
+        }
+
+        public static uint[] FromBigInteger(BigInteger x)
+        {
+            uint[] z = Nat.FromBigInteger(160, x);
+            if (z[4] == P4 && Nat160.Gte(z, P))
+            {
+                Nat160.SubFrom(P, z);
+            }
+            return z;
+        }
+
+        public static void Half(uint[] x, uint[] z)
+        {
+            if ((x[0] & 1) == 0)
+            {
+                Nat.ShiftDownBit(5, x, 0, z);
+            }
+            else
+            {
+                uint c = Nat160.Add(x, P, z);
+                Nat.ShiftDownBit(5, z, c);
+            }
+        }
+
+        public static void Inv(uint[] x, uint[] z)
+        {
+            Mod.CheckedModOddInverse(P, x, z);
+        }
+
+        public static int IsZero(uint[] x)
+        {
+            uint d = 0;
+            for (int i = 0; i < 5; ++i)
+            {
+                d |= x[i];
+            }
+            d = (d >> 1) | (d & 1);
+            return ((int)d - 1) >> 31;
+        }
+
+        public static void Multiply(uint[] x, uint[] y, uint[] z)
+        {
+            uint[] tt = Nat160.CreateExt();
+            Nat160.Mul(x, y, tt);
+            Reduce(tt, z);
+        }
+
+        public static void MultiplyAddToExt(uint[] x, uint[] y, uint[] zz)
+        {
+            uint c = Nat160.MulAddTo(x, y, zz);
+            if (c != 0 || (zz[9] == PExt9 && Nat.Gte(10, zz, PExt)))
+            {
+                if (Nat.AddTo(PExtInv.Length, PExtInv, zz) != 0)
+                {
+                    Nat.IncAt(10, zz, PExtInv.Length);
+                }
+            }
+        }
+
+        public static void Negate(uint[] x, uint[] z)
+        {
+            if (0 != IsZero(x))
+            {
+                Nat160.Sub(P, P, z);
+            }
+            else
+            {
+                Nat160.Sub(P, x, z);
+            }
+        }
+
+        public static void Random(SecureRandom r, uint[] z)
+        {
+            byte[] bb = new byte[5 * 4];
+            do
+            {
+                r.NextBytes(bb);
+                Pack.LE_To_UInt32(bb, 0, z, 0, 5);
+            }
+            while (0 == Nat.LessThan(5, z, P));
+        }
+
+        public static void RandomMult(SecureRandom r, uint[] z)
+        {
+            do
+            {
+                Random(r, z);
+            }
+            while (0 != IsZero(z));
+        }
+
+        public static void Reduce(uint[] xx, uint[] z)
+        {
+            ulong x5 = xx[5], x6 = xx[6], x7 = xx[7], x8 = xx[8], x9 = xx[9];
+
+            ulong c = 0;
+            c += (ulong)xx[0] + x5 + (x5 << 31);
+            z[0] = (uint)c; c >>= 32;
+            c += (ulong)xx[1] + x6 + (x6 << 31);
+            z[1] = (uint)c; c >>= 32;
+            c += (ulong)xx[2] + x7 + (x7 << 31);
+            z[2] = (uint)c; c >>= 32;
+            c += (ulong)xx[3] + x8 + (x8 << 31);
+            z[3] = (uint)c; c >>= 32;
+            c += (ulong)xx[4] + x9 + (x9 << 31);
+            z[4] = (uint)c; c >>= 32;
+
+            Debug.Assert(c >> 32 == 0);
+
+            Reduce32((uint)c, z);
+        }
+
+        public static void Reduce32(uint x, uint[] z)
+        {
+            if ((x != 0 && Nat160.MulWordsAdd(PInv, x, z, 0) != 0)
+                || (z[4] == P4 && Nat160.Gte(z, P)))
+            {
+                Nat.AddWordTo(5, PInv, z);
+            }
+        }
+
+        public static void Square(uint[] x, uint[] z)
+        {
+            uint[] tt = Nat160.CreateExt();
+            Nat160.Square(x, tt);
+            Reduce(tt, z);
+        }
+
+        public static void SquareN(uint[] x, int n, uint[] z)
+        {
+            Debug.Assert(n > 0);
+
+            uint[] tt = Nat160.CreateExt();
+            Nat160.Square(x, tt);
+            Reduce(tt, z);
+
+            while (--n > 0)
+            {
+                Nat160.Square(z, tt);
+                Reduce(tt, z);
+            }
+        }
+
+        public static void Subtract(uint[] x, uint[] y, uint[] z)
+        {
+            int c = Nat160.Sub(x, y, z);
+            if (c != 0)
+            {
+                Nat.SubWordFrom(5, PInv, z);
+            }
+        }
+
+        public static void SubtractExt(uint[] xx, uint[] yy, uint[] zz)
+        {
+            int c = Nat.Sub(10, xx, yy, zz);
+            if (c != 0)
+            {
+                if (Nat.SubFrom(PExtInv.Length, PExtInv, zz) != 0)
+                {
+                    Nat.DecAt(10, zz, PExtInv.Length);
+                }
+            }
+        }
+
+        public static void Twice(uint[] x, uint[] z)
+        {
+            uint c = Nat.ShiftUpBit(5, x, 0, z);
+            if (c != 0 || (z[4] == P4 && Nat160.Gte(z, P)))
+            {
+                Nat.AddWordTo(5, PInv, z);
+            }
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP160R1Field.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 841753f0e6888334aab3a0b0c9d7a34f
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP160R1FieldElement.cs

@@ -0,0 +1,208 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities.Encoders;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP160R1FieldElement
+        : AbstractFpFieldElement
+    {
+        public static readonly BigInteger Q = new BigInteger(1,
+            Hex.DecodeStrict("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF7FFFFFFF"));
+
+        protected internal readonly uint[] x;
+
+        public SecP160R1FieldElement(BigInteger x)
+        {
+            if (x == null || x.SignValue < 0 || x.CompareTo(Q) >= 0)
+                throw new ArgumentException("value invalid for SecP160R1FieldElement", "x");
+
+            this.x = SecP160R1Field.FromBigInteger(x);
+        }
+
+        public SecP160R1FieldElement()
+        {
+            this.x = Nat160.Create();
+        }
+
+        protected internal SecP160R1FieldElement(uint[] x)
+        {
+            this.x = x;
+        }
+
+        public override bool IsZero
+        {
+            get { return Nat160.IsZero(x); }
+        }
+
+        public override bool IsOne
+        {
+            get { return Nat160.IsOne(x); }
+        }
+
+        public override bool TestBitZero()
+        {
+            return Nat160.GetBit(x, 0) == 1;
+        }
+
+        public override BigInteger ToBigInteger()
+        {
+            return Nat160.ToBigInteger(x);
+        }
+
+        public override string FieldName
+        {
+            get { return "SecP160R1Field"; }
+        }
+
+        public override int FieldSize
+        {
+            get { return Q.BitLength; }
+        }
+
+        public override ECFieldElement Add(ECFieldElement b)
+        {
+            uint[] z = Nat160.Create();
+            SecP160R1Field.Add(x, ((SecP160R1FieldElement)b).x, z);
+            return new SecP160R1FieldElement(z);
+        }
+
+        public override ECFieldElement AddOne()
+        {
+            uint[] z = Nat160.Create();
+            SecP160R1Field.AddOne(x, z);
+            return new SecP160R1FieldElement(z);
+        }
+
+        public override ECFieldElement Subtract(ECFieldElement b)
+        {
+            uint[] z = Nat160.Create();
+            SecP160R1Field.Subtract(x, ((SecP160R1FieldElement)b).x, z);
+            return new SecP160R1FieldElement(z);
+        }
+
+        public override ECFieldElement Multiply(ECFieldElement b)
+        {
+            uint[] z = Nat160.Create();
+            SecP160R1Field.Multiply(x, ((SecP160R1FieldElement)b).x, z);
+            return new SecP160R1FieldElement(z);
+        }
+
+        public override ECFieldElement Divide(ECFieldElement b)
+        {
+    //        return multiply(b.invert());
+            uint[] z = Nat160.Create();
+            SecP160R1Field.Inv(((SecP160R1FieldElement)b).x, z);
+            SecP160R1Field.Multiply(z, x, z);
+            return new SecP160R1FieldElement(z);
+        }
+
+        public override ECFieldElement Negate()
+        {
+            uint[] z = Nat160.Create();
+            SecP160R1Field.Negate(x, z);
+            return new SecP160R1FieldElement(z);
+        }
+
+        public override ECFieldElement Square()
+        {
+            uint[] z = Nat160.Create();
+            SecP160R1Field.Square(x, z);
+            return new SecP160R1FieldElement(z);
+        }
+
+        public override ECFieldElement Invert()
+        {
+            uint[] z = Nat160.Create();
+            SecP160R1Field.Inv(x, z);
+            return new SecP160R1FieldElement(z);
+        }
+
+        // D.1.4 91
+        /**
+         * return a sqrt root - the routine verifies that the calculation returns the right value - if
+         * none exists it returns null.
+         */
+        public override ECFieldElement Sqrt()
+        {
+            /*
+             * Raise this element to the exponent 2^158 - 2^29
+             * 
+             * Breaking up the exponent's binary representation into "repunits", we get:
+             *     { 129 1s } { 29 0s }
+             * 
+             * Therefore we need an addition chain containing 129 (the length of the repunit) We use:
+             *     1, 2, 4, 8, 16, 32, 64, 128, [129]
+             */
+
+            uint[] x1 = this.x;
+            if (Nat160.IsZero(x1) || Nat160.IsOne(x1))
+            {
+                return this;
+            }
+
+            uint[] x2 = Nat160.Create();
+            SecP160R1Field.Square(x1, x2);
+            SecP160R1Field.Multiply(x2, x1, x2);
+            uint[] x4 = Nat160.Create();
+            SecP160R1Field.SquareN(x2, 2, x4);
+            SecP160R1Field.Multiply(x4, x2, x4);
+            uint[] x8 = x2;
+            SecP160R1Field.SquareN(x4, 4, x8);
+            SecP160R1Field.Multiply(x8, x4, x8);
+            uint[] x16 = x4;
+            SecP160R1Field.SquareN(x8, 8, x16);
+            SecP160R1Field.Multiply(x16, x8, x16);
+            uint[] x32 = x8;
+            SecP160R1Field.SquareN(x16, 16, x32);
+            SecP160R1Field.Multiply(x32, x16, x32);
+            uint[] x64 = x16;
+            SecP160R1Field.SquareN(x32, 32, x64);
+            SecP160R1Field.Multiply(x64, x32, x64);
+            uint[] x128 = x32;
+            SecP160R1Field.SquareN(x64, 64, x128);
+            SecP160R1Field.Multiply(x128, x64, x128);
+            uint[] x129 = x64;
+            SecP160R1Field.Square(x128, x129);
+            SecP160R1Field.Multiply(x129, x1, x129);
+
+            uint[] t1 = x129;
+            SecP160R1Field.SquareN(t1, 29, t1);
+
+            uint[] t2 = x128;
+            SecP160R1Field.Square(t1, t2);
+
+            return Nat160.Eq(x1, t2) ? new SecP160R1FieldElement(t1) : null;        
+        }
+
+        public override bool Equals(object obj)
+        {
+            return Equals(obj as SecP160R1FieldElement);
+        }
+
+        public override bool Equals(ECFieldElement other)
+        {
+            return Equals(other as SecP160R1FieldElement);
+        }
+
+        public virtual bool Equals(SecP160R1FieldElement other)
+        {
+            if (this == other)
+                return true;
+            if (null == other)
+                return false;
+            return Nat160.Eq(x, other.x);
+        }
+
+        public override int GetHashCode()
+        {
+            return Q.GetHashCode() ^ Arrays.GetHashCode(x, 0, 5);
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP160R1FieldElement.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: babb04ce52cde9d48a3badbb7728aca0
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP160R1Point.cs

@@ -0,0 +1,249 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP160R1Point
+        : AbstractFpPoint
+    {
+        internal SecP160R1Point(ECCurve curve, ECFieldElement x, ECFieldElement y)
+            : base(curve, x, y)
+        {
+        }
+
+        internal SecP160R1Point(ECCurve curve, ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)
+            : base(curve, x, y, zs)
+        {
+        }
+
+        protected override ECPoint Detach()
+        {
+            return new SecP160R1Point(null, AffineXCoord, AffineYCoord);
+        }
+
+        public override ECPoint Add(ECPoint b)
+        {
+            if (this.IsInfinity)
+                return b;
+            if (b.IsInfinity)
+                return this;
+            if (this == b)
+                return Twice();
+
+            ECCurve curve = this.Curve;
+
+            SecP160R1FieldElement X1 = (SecP160R1FieldElement)this.RawXCoord, Y1 = (SecP160R1FieldElement)this.RawYCoord;
+            SecP160R1FieldElement X2 = (SecP160R1FieldElement)b.RawXCoord, Y2 = (SecP160R1FieldElement)b.RawYCoord;
+
+            SecP160R1FieldElement Z1 = (SecP160R1FieldElement)this.RawZCoords[0];
+            SecP160R1FieldElement Z2 = (SecP160R1FieldElement)b.RawZCoords[0];
+
+            uint c;
+            uint[] tt1 = Nat160.CreateExt();
+            uint[] t2 = Nat160.Create();
+            uint[] t3 = Nat160.Create();
+            uint[] t4 = Nat160.Create();
+
+            bool Z1IsOne = Z1.IsOne;
+            uint[] U2, S2;
+            if (Z1IsOne)
+            {
+                U2 = X2.x;
+                S2 = Y2.x;
+            }
+            else
+            {
+                S2 = t3;
+                SecP160R1Field.Square(Z1.x, S2);
+
+                U2 = t2;
+                SecP160R1Field.Multiply(S2, X2.x, U2);
+
+                SecP160R1Field.Multiply(S2, Z1.x, S2);
+                SecP160R1Field.Multiply(S2, Y2.x, S2);
+            }
+
+            bool Z2IsOne = Z2.IsOne;
+            uint[] U1, S1;
+            if (Z2IsOne)
+            {
+                U1 = X1.x;
+                S1 = Y1.x;
+            }
+            else
+            {
+                S1 = t4;
+                SecP160R1Field.Square(Z2.x, S1);
+
+                U1 = tt1;
+                SecP160R1Field.Multiply(S1, X1.x, U1);
+
+                SecP160R1Field.Multiply(S1, Z2.x, S1);
+                SecP160R1Field.Multiply(S1, Y1.x, S1);
+            }
+
+            uint[] H = Nat160.Create();
+            SecP160R1Field.Subtract(U1, U2, H);
+
+            uint[] R = t2;
+            SecP160R1Field.Subtract(S1, S2, R);
+
+            // Check if b == this or b == -this
+            if (Nat160.IsZero(H))
+            {
+                if (Nat160.IsZero(R))
+                {
+                    // this == b, i.e. this must be doubled
+                    return this.Twice();
+                }
+
+                // this == -b, i.e. the result is the point at infinity
+                return curve.Infinity;
+            }
+
+            uint[] HSquared = t3;
+            SecP160R1Field.Square(H, HSquared);
+
+            uint[] G = Nat160.Create();
+            SecP160R1Field.Multiply(HSquared, H, G);
+
+            uint[] V = t3;
+            SecP160R1Field.Multiply(HSquared, U1, V);
+
+            SecP160R1Field.Negate(G, G);
+            Nat160.Mul(S1, G, tt1);
+
+            c = Nat160.AddBothTo(V, V, G);
+            SecP160R1Field.Reduce32(c, G);
+
+            SecP160R1FieldElement X3 = new SecP160R1FieldElement(t4);
+            SecP160R1Field.Square(R, X3.x);
+            SecP160R1Field.Subtract(X3.x, G, X3.x);
+
+            SecP160R1FieldElement Y3 = new SecP160R1FieldElement(G);
+            SecP160R1Field.Subtract(V, X3.x, Y3.x);
+            SecP160R1Field.MultiplyAddToExt(Y3.x, R, tt1);
+            SecP160R1Field.Reduce(tt1, Y3.x);
+
+            SecP160R1FieldElement Z3 = new SecP160R1FieldElement(H);
+            if (!Z1IsOne)
+            {
+                SecP160R1Field.Multiply(Z3.x, Z1.x, Z3.x);
+            }
+            if (!Z2IsOne)
+            {
+                SecP160R1Field.Multiply(Z3.x, Z2.x, Z3.x);
+            }
+
+            ECFieldElement[] zs = new ECFieldElement[]{ Z3 };
+
+            return new SecP160R1Point(curve, X3, Y3, zs);
+        }
+
+        public override ECPoint Twice()
+        {
+            if (this.IsInfinity)
+                return this;
+
+            ECCurve curve = this.Curve;
+
+            SecP160R1FieldElement Y1 = (SecP160R1FieldElement)this.RawYCoord;
+            if (Y1.IsZero)
+                return curve.Infinity;
+
+            SecP160R1FieldElement X1 = (SecP160R1FieldElement)this.RawXCoord, Z1 = (SecP160R1FieldElement)this.RawZCoords[0];
+
+            uint c;
+            uint[] t1 = Nat160.Create();
+            uint[] t2 = Nat160.Create();
+
+            uint[] Y1Squared = Nat160.Create();
+            SecP160R1Field.Square(Y1.x, Y1Squared);
+
+            uint[] T = Nat160.Create();
+            SecP160R1Field.Square(Y1Squared, T);
+
+            bool Z1IsOne = Z1.IsOne;
+
+            uint[] Z1Squared = Z1.x;
+            if (!Z1IsOne)
+            {
+                Z1Squared = t2;
+                SecP160R1Field.Square(Z1.x, Z1Squared);
+            }
+
+            SecP160R1Field.Subtract(X1.x, Z1Squared, t1);
+
+            uint[] M = t2;
+            SecP160R1Field.Add(X1.x, Z1Squared, M);
+            SecP160R1Field.Multiply(M, t1, M);
+            c = Nat160.AddBothTo(M, M, M);
+            SecP160R1Field.Reduce32(c, M);
+
+            uint[] S = Y1Squared;
+            SecP160R1Field.Multiply(Y1Squared, X1.x, S);
+            c = Nat.ShiftUpBits(5, S, 2, 0);
+            SecP160R1Field.Reduce32(c, S);
+
+            c = Nat.ShiftUpBits(5, T, 3, 0, t1);
+            SecP160R1Field.Reduce32(c, t1);
+
+            SecP160R1FieldElement X3 = new SecP160R1FieldElement(T);
+            SecP160R1Field.Square(M, X3.x);
+            SecP160R1Field.Subtract(X3.x, S, X3.x);
+            SecP160R1Field.Subtract(X3.x, S, X3.x);
+
+            SecP160R1FieldElement Y3 = new SecP160R1FieldElement(S);
+            SecP160R1Field.Subtract(S, X3.x, Y3.x);
+            SecP160R1Field.Multiply(Y3.x, M, Y3.x);
+            SecP160R1Field.Subtract(Y3.x, t1, Y3.x);
+
+            SecP160R1FieldElement Z3 = new SecP160R1FieldElement(M);
+            SecP160R1Field.Twice(Y1.x, Z3.x);
+            if (!Z1IsOne)
+            {
+                SecP160R1Field.Multiply(Z3.x, Z1.x, Z3.x);
+            }
+
+            return new SecP160R1Point(curve, X3, Y3, new ECFieldElement[]{ Z3 });
+        }
+
+        public override ECPoint TwicePlus(ECPoint b)
+        {
+            if (this == b)
+                return ThreeTimes();
+            if (this.IsInfinity)
+                return b;
+            if (b.IsInfinity)
+                return Twice();
+
+            ECFieldElement Y1 = this.RawYCoord;
+            if (Y1.IsZero)
+                return b;
+
+            return Twice().Add(b);
+        }
+
+        public override ECPoint ThreeTimes()
+        {
+            if (this.IsInfinity || this.RawYCoord.IsZero)
+                return this;
+
+            // NOTE: Be careful about recursions between TwicePlus and ThreeTimes
+            return Twice().Add(this);
+        }
+
+        public override ECPoint Negate()
+        {
+            if (IsInfinity)
+                return this;
+
+            return new SecP160R1Point(Curve, RawXCoord, RawYCoord.Negate(), RawZCoords);
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP160R1Point.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: d5257bd5e96b8134cafbdb832c1465f0
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP160R2Curve.cs

@@ -0,0 +1,175 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities.Encoders;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP160R2Curve
+        : AbstractFpCurve
+    {
+        public static readonly BigInteger q = SecP160R2FieldElement.Q;
+
+        private const int SECP160R2_DEFAULT_COORDS = COORD_JACOBIAN;
+        private const int SECP160R2_FE_INTS = 5;
+        private static readonly ECFieldElement[] SECP160R2_AFFINE_ZS = new ECFieldElement[] { new SecP160R2FieldElement(BigInteger.One) };
+
+        protected readonly SecP160R2Point m_infinity;
+
+        public SecP160R2Curve()
+            : base(q)
+        {
+            this.m_infinity = new SecP160R2Point(this, null, null);
+
+            this.m_a = FromBigInteger(new BigInteger(1,
+                Hex.DecodeStrict("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFAC70")));
+            this.m_b = FromBigInteger(new BigInteger(1,
+                Hex.DecodeStrict("B4E134D3FB59EB8BAB57274904664D5AF50388BA")));
+            this.m_order = new BigInteger(1, Hex.DecodeStrict("0100000000000000000000351EE786A818F3A1A16B"));
+            this.m_cofactor = BigInteger.One;
+
+            this.m_coord = SECP160R2_DEFAULT_COORDS;
+        }
+
+        protected override ECCurve CloneCurve()
+        {
+            return new SecP160R2Curve();
+        }
+
+        public override bool SupportsCoordinateSystem(int coord)
+        {
+            switch (coord)
+            {
+            case COORD_JACOBIAN:
+                return true;
+            default:
+                return false;
+            }
+        }
+
+        public virtual BigInteger Q
+        {
+            get { return q; }
+        }
+
+        public override ECPoint Infinity
+        {
+            get { return m_infinity; }
+        }
+
+        public override int FieldSize
+        {
+            get { return q.BitLength; }
+        }
+
+        public override ECFieldElement FromBigInteger(BigInteger x)
+        {
+            return new SecP160R2FieldElement(x);
+        }
+
+        protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y)
+        {
+            return new SecP160R2Point(this, x, y);
+        }
+
+        protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)
+        {
+            return new SecP160R2Point(this, x, y, zs);
+        }
+
+        public override ECLookupTable CreateCacheSafeLookupTable(ECPoint[] points, int off, int len)
+        {
+            uint[] table = new uint[len * SECP160R2_FE_INTS * 2];
+            {
+                int pos = 0;
+                for (int i = 0; i < len; ++i)
+                {
+                    ECPoint p = points[off + i];
+                    Nat160.Copy(((SecP160R2FieldElement)p.RawXCoord).x, 0, table, pos); pos += SECP160R2_FE_INTS;
+                    Nat160.Copy(((SecP160R2FieldElement)p.RawYCoord).x, 0, table, pos); pos += SECP160R2_FE_INTS;
+                }
+            }
+
+            return new SecP160R2LookupTable(this, table, len);
+        }
+
+        public override ECFieldElement RandomFieldElement(SecureRandom r)
+        {
+            uint[] x = Nat160.Create();
+            SecP160R2Field.Random(r, x);
+            return new SecP160R2FieldElement(x);
+        }
+
+        public override ECFieldElement RandomFieldElementMult(SecureRandom r)
+        {
+            uint[] x = Nat160.Create();
+            SecP160R2Field.RandomMult(r, x);
+            return new SecP160R2FieldElement(x);
+        }
+
+        private class SecP160R2LookupTable
+            : AbstractECLookupTable
+        {
+            private readonly SecP160R2Curve m_outer;
+            private readonly uint[] m_table;
+            private readonly int m_size;
+
+            internal SecP160R2LookupTable(SecP160R2Curve outer, uint[] table, int size)
+            {
+                this.m_outer = outer;
+                this.m_table = table;
+                this.m_size = size;
+            }
+
+            public override int Size
+            {
+                get { return m_size; }
+            }
+
+            public override ECPoint Lookup(int index)
+            {
+                uint[] x = Nat160.Create(), y = Nat160.Create();
+                int pos = 0;
+
+                for (int i = 0; i < m_size; ++i)
+                {
+                    uint MASK = (uint)(((i ^ index) - 1) >> 31);
+
+                    for (int j = 0; j < SECP160R2_FE_INTS; ++j)
+                    {
+                        x[j] ^= m_table[pos + j] & MASK;
+                        y[j] ^= m_table[pos + SECP160R2_FE_INTS + j] & MASK;
+                    }
+
+                    pos += (SECP160R2_FE_INTS * 2);
+                }
+
+                return CreatePoint(x, y);
+            }
+
+            public override ECPoint LookupVar(int index)
+            {
+                uint[] x = Nat160.Create(), y = Nat160.Create();
+                int pos = index * SECP160R2_FE_INTS * 2;
+
+                for (int j = 0; j < SECP160R2_FE_INTS; ++j)
+                {
+                    x[j] = m_table[pos + j];
+                    y[j] = m_table[pos + SECP160R2_FE_INTS + j];
+                }
+
+                return CreatePoint(x, y);
+            }
+
+            private ECPoint CreatePoint(uint[] x, uint[] y)
+            {
+                return m_outer.CreateRawPoint(new SecP160R2FieldElement(x), new SecP160R2FieldElement(y), SECP160R2_AFFINE_ZS);
+            }
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP160R2Curve.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: b6713865f83b41649a4c63d52eae94f6
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP160R2Field.cs

@@ -0,0 +1,220 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+using System.Diagnostics;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto.Utilities;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP160R2Field
+    {
+        // 2^160 - 2^32 - 2^14 - 2^12 - 2^9 - 2^8 - 2^7 - 2^3 - 2^2 - 1
+        internal static readonly uint[] P = new uint[]{ 0xFFFFAC73, 0xFFFFFFFE, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF };
+        private static readonly uint[] PExt = new uint[]{ 0x1B44BBA9, 0x0000A71A, 0x00000001, 0x00000000, 0x00000000,
+            0xFFFF58E6, 0xFFFFFFFD, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF };
+        private static readonly uint[] PExtInv = new uint[]{ 0xE4BB4457, 0xFFFF58E5, 0xFFFFFFFE, 0xFFFFFFFF,
+            0xFFFFFFFF, 0x0000A719, 0x00000002 };
+        private const uint P4 = 0xFFFFFFFF;
+        private const uint PExt9 = 0xFFFFFFFF;
+        private const uint PInv33 = 0x538D;
+
+        public static void Add(uint[] x, uint[] y, uint[] z)
+        {
+            uint c = Nat160.Add(x, y, z);
+            if (c != 0 || (z[4] == P4 && Nat160.Gte(z, P)))
+            {
+                Nat.Add33To(5, PInv33, z);
+            }
+        }
+
+        public static void AddExt(uint[] xx, uint[] yy, uint[] zz)
+        {
+            uint c = Nat.Add(10, xx, yy, zz);
+            if (c != 0 || (zz[9] == PExt9 && Nat.Gte(10, zz, PExt)))
+            {
+                if (Nat.AddTo(PExtInv.Length, PExtInv, zz) != 0)
+                {
+                    Nat.IncAt(10, zz, PExtInv.Length);
+                }
+            }
+        }
+
+        public static void AddOne(uint[] x, uint[] z)
+        {
+            uint c = Nat.Inc(5, x, z);
+            if (c != 0 || (z[4] == P4 && Nat160.Gte(z, P)))
+            {
+                Nat.Add33To(5, PInv33, z);
+            }
+        }
+
+        public static uint[] FromBigInteger(BigInteger x)
+        {
+            uint[] z = Nat.FromBigInteger(160, x);
+            if (z[4] == P4 && Nat160.Gte(z, P))
+            {
+                Nat160.SubFrom(P, z);
+            }
+            return z;
+        }
+
+        public static void Half(uint[] x, uint[] z)
+        {
+            if ((x[0] & 1) == 0)
+            {
+                Nat.ShiftDownBit(5, x, 0, z);
+            }
+            else
+            {
+                uint c = Nat160.Add(x, P, z);
+                Nat.ShiftDownBit(5, z, c);
+            }
+        }
+
+        public static void Inv(uint[] x, uint[] z)
+        {
+            Mod.CheckedModOddInverse(P, x, z);
+        }
+
+        public static int IsZero(uint[] x)
+        {
+            uint d = 0;
+            for (int i = 0; i < 5; ++i)
+            {
+                d |= x[i];
+            }
+            d = (d >> 1) | (d & 1);
+            return ((int)d - 1) >> 31;
+        }
+
+        public static void Multiply(uint[] x, uint[] y, uint[] z)
+        {
+            uint[] tt = Nat160.CreateExt();
+            Nat160.Mul(x, y, tt);
+            Reduce(tt, z);
+        }
+
+        public static void MultiplyAddToExt(uint[] x, uint[] y, uint[] zz)
+        {
+            uint c = Nat160.MulAddTo(x, y, zz);
+            if (c != 0 || (zz[9] == PExt9 && Nat.Gte(10, zz, PExt)))
+            {
+                if (Nat.AddTo(PExtInv.Length, PExtInv, zz) != 0)
+                {
+                    Nat.IncAt(10, zz, PExtInv.Length);
+                }
+            }
+        }
+
+        public static void Negate(uint[] x, uint[] z)
+        {
+            if (0 != IsZero(x))
+            {
+                Nat160.Sub(P, P, z);
+            }
+            else
+            {
+                Nat160.Sub(P, x, z);
+            }
+        }
+
+        public static void Random(SecureRandom r, uint[] z)
+        {
+            byte[] bb = new byte[5 * 4];
+            do
+            {
+                r.NextBytes(bb);
+                Pack.LE_To_UInt32(bb, 0, z, 0, 5);
+            }
+            while (0 == Nat.LessThan(5, z, P));
+        }
+
+        public static void RandomMult(SecureRandom r, uint[] z)
+        {
+            do
+            {
+                Random(r, z);
+            }
+            while (0 != IsZero(z));
+        }
+
+        public static void Reduce(uint[] xx, uint[] z)
+        {
+            ulong cc = Nat160.Mul33Add(PInv33, xx, 5, xx, 0, z, 0);
+            uint c = Nat160.Mul33DWordAdd(PInv33, cc, z, 0);
+
+            Debug.Assert(c == 0 || c == 1);
+
+            if (c != 0 || (z[4] == P4 && Nat160.Gte(z, P)))
+            {
+                Nat.Add33To(5, PInv33, z);
+            }
+        }
+
+        public static void Reduce32(uint x, uint[] z)
+        {
+            if ((x != 0 && Nat160.Mul33WordAdd(PInv33, x, z, 0) != 0)
+                || (z[4] == P4 && Nat160.Gte(z, P)))
+            {
+                Nat.Add33To(5, PInv33, z);
+            }
+        }
+
+        public static void Square(uint[] x, uint[] z)
+        {
+            uint[] tt = Nat160.CreateExt();
+            Nat160.Square(x, tt);
+            Reduce(tt, z);
+        }
+
+        public static void SquareN(uint[] x, int n, uint[] z)
+        {
+            Debug.Assert(n > 0);
+
+            uint[] tt = Nat160.CreateExt();
+            Nat160.Square(x, tt);
+            Reduce(tt, z);
+
+            while (--n > 0)
+            {
+                Nat160.Square(z, tt);
+                Reduce(tt, z);
+            }
+        }
+
+        public static void Subtract(uint[] x, uint[] y, uint[] z)
+        {
+            int c = Nat160.Sub(x, y, z);
+            if (c != 0)
+            {
+                Nat.Sub33From(5, PInv33, z);
+            }
+        }
+
+        public static void SubtractExt(uint[] xx, uint[] yy, uint[] zz)
+        {
+            int c = Nat.Sub(10, xx, yy, zz);
+            if (c != 0)
+            {
+                if (Nat.SubFrom(PExtInv.Length, PExtInv, zz) != 0)
+                {
+                    Nat.DecAt(10, zz, PExtInv.Length);
+                }
+            }
+        }
+
+        public static void Twice(uint[] x, uint[] z)
+        {
+            uint c = Nat.ShiftUpBit(5, x, 0, z);
+            if (c != 0 || (z[4] == P4 && Nat160.Gte(z, P)))
+            {
+                Nat.Add33To(5, PInv33, z);
+            }
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP160R2Field.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 2390e73468d24064b83cb935831081b2
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP160R2FieldElement.cs

@@ -0,0 +1,223 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities.Encoders;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP160R2FieldElement
+        : AbstractFpFieldElement
+    {
+        public static readonly BigInteger Q = new BigInteger(1,
+            Hex.DecodeStrict("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFAC73"));
+
+        protected internal readonly uint[] x;
+
+        public SecP160R2FieldElement(BigInteger x)
+        {
+            if (x == null || x.SignValue < 0 || x.CompareTo(Q) >= 0)
+                throw new ArgumentException("value invalid for SecP160R2FieldElement", "x");
+
+            this.x = SecP160R2Field.FromBigInteger(x);
+        }
+
+        public SecP160R2FieldElement()
+        {
+            this.x = Nat160.Create();
+        }
+
+        protected internal SecP160R2FieldElement(uint[] x)
+        {
+            this.x = x;
+        }
+
+        public override bool IsZero
+        {
+            get { return Nat160.IsZero(x); }
+        }
+
+        public override bool IsOne
+        {
+            get { return Nat160.IsOne(x); }
+        }
+
+        public override bool TestBitZero()
+        {
+            return Nat160.GetBit(x, 0) == 1;
+        }
+
+        public override BigInteger ToBigInteger()
+        {
+            return Nat160.ToBigInteger(x);
+        }
+
+        public override string FieldName
+        {
+            get { return "SecP160R2Field"; }
+        }
+
+        public override int FieldSize
+        {
+            get { return Q.BitLength; }
+        }
+
+        public override ECFieldElement Add(ECFieldElement b)
+        {
+            uint[] z = Nat160.Create();
+            SecP160R2Field.Add(x, ((SecP160R2FieldElement)b).x, z);
+            return new SecP160R2FieldElement(z);
+        }
+
+        public override ECFieldElement AddOne()
+        {
+            uint[] z = Nat160.Create();
+            SecP160R2Field.AddOne(x, z);
+            return new SecP160R2FieldElement(z);
+        }
+
+        public override ECFieldElement Subtract(ECFieldElement b)
+        {
+            uint[] z = Nat160.Create();
+            SecP160R2Field.Subtract(x, ((SecP160R2FieldElement)b).x, z);
+            return new SecP160R2FieldElement(z);
+        }
+
+        public override ECFieldElement Multiply(ECFieldElement b)
+        {
+            uint[] z = Nat160.Create();
+            SecP160R2Field.Multiply(x, ((SecP160R2FieldElement)b).x, z);
+            return new SecP160R2FieldElement(z);
+        }
+
+        public override ECFieldElement Divide(ECFieldElement b)
+        {
+    //        return Multiply(b.invert());
+            uint[] z = Nat160.Create();
+            SecP160R2Field.Inv(((SecP160R2FieldElement)b).x, z);
+            SecP160R2Field.Multiply(z, x, z);
+            return new SecP160R2FieldElement(z);
+        }
+
+        public override ECFieldElement Negate()
+        {
+            uint[] z = Nat160.Create();
+            SecP160R2Field.Negate(x, z);
+            return new SecP160R2FieldElement(z);
+        }
+
+        public override ECFieldElement Square()
+        {
+            uint[] z = Nat160.Create();
+            SecP160R2Field.Square(x, z);
+            return new SecP160R2FieldElement(z);
+        }
+
+        public override ECFieldElement Invert()
+        {
+            uint[] z = Nat160.Create();
+            SecP160R2Field.Inv(x, z);
+            return new SecP160R2FieldElement(z);
+        }
+
+        // D.1.4 91
+        /**
+         * return a sqrt root - the routine verifies that the calculation returns the right value - if
+         * none exists it returns null.
+         */
+        public override ECFieldElement Sqrt()
+        {
+            /*
+             * Raise this element to the exponent 2^158 - 2^30 - 2^12 - 2^10 - 2^7 - 2^6 - 2^5 - 2^1 - 2^0
+             * 
+             * Breaking up the exponent's binary representation into "repunits", we get: { 127 1s } { 1
+             * 0s } { 17 1s } { 1 0s } { 1 1s } { 1 0s } { 2 1s } { 3 0s } { 3 1s } { 1 0s } { 1 1s }
+             * 
+             * Therefore we need an Addition chain containing 1, 2, 3, 17, 127 (the lengths of the repunits)
+             * We use: [1], [2], [3], 4, 7, 14, [17], 31, 62, 124, [127]
+             */
+
+            uint[] x1 = this.x;
+            if (Nat160.IsZero(x1) || Nat160.IsOne(x1))
+            {
+                return this;
+            }
+
+            uint[] x2 = Nat160.Create();
+            SecP160R2Field.Square(x1, x2);
+            SecP160R2Field.Multiply(x2, x1, x2);
+            uint[] x3 = Nat160.Create();
+            SecP160R2Field.Square(x2, x3);
+            SecP160R2Field.Multiply(x3, x1, x3);
+            uint[] x4 = Nat160.Create();
+            SecP160R2Field.Square(x3, x4);
+            SecP160R2Field.Multiply(x4, x1, x4);
+            uint[] x7 = Nat160.Create();
+            SecP160R2Field.SquareN(x4, 3, x7);
+            SecP160R2Field.Multiply(x7, x3, x7);
+            uint[] x14 = x4;
+            SecP160R2Field.SquareN(x7, 7, x14);
+            SecP160R2Field.Multiply(x14, x7, x14);
+            uint[] x17 = x7;
+            SecP160R2Field.SquareN(x14, 3, x17);
+            SecP160R2Field.Multiply(x17, x3, x17);
+            uint[] x31 = Nat160.Create();
+            SecP160R2Field.SquareN(x17, 14, x31);
+            SecP160R2Field.Multiply(x31, x14, x31);
+            uint[] x62 = x14;
+            SecP160R2Field.SquareN(x31, 31, x62);
+            SecP160R2Field.Multiply(x62, x31, x62);
+            uint[] x124 = x31;
+            SecP160R2Field.SquareN(x62, 62, x124);
+            SecP160R2Field.Multiply(x124, x62, x124);
+            uint[] x127 = x62;
+            SecP160R2Field.SquareN(x124, 3, x127);
+            SecP160R2Field.Multiply(x127, x3, x127);
+
+            uint[] t1 = x127;
+            SecP160R2Field.SquareN(t1, 18, t1);
+            SecP160R2Field.Multiply(t1, x17, t1);
+            SecP160R2Field.SquareN(t1, 2, t1);
+            SecP160R2Field.Multiply(t1, x1, t1);
+            SecP160R2Field.SquareN(t1, 3, t1);
+            SecP160R2Field.Multiply(t1, x2, t1);
+            SecP160R2Field.SquareN(t1, 6, t1);
+            SecP160R2Field.Multiply(t1, x3, t1);
+            SecP160R2Field.SquareN(t1, 2, t1);
+            SecP160R2Field.Multiply(t1, x1, t1);
+
+            uint[] t2 = x2;
+            SecP160R2Field.Square(t1, t2);
+
+            return Nat160.Eq(x1, t2) ? new SecP160R2FieldElement(t1) : null;        
+        }
+
+        public override bool Equals(object obj)
+        {
+            return Equals(obj as SecP160R2FieldElement);
+        }
+
+        public override bool Equals(ECFieldElement other)
+        {
+            return Equals(other as SecP160R2FieldElement);
+        }
+
+        public virtual bool Equals(SecP160R2FieldElement other)
+        {
+            if (this == other)
+                return true;
+            if (null == other)
+                return false;
+            return Nat160.Eq(x, other.x);
+        }
+
+        public override int GetHashCode()
+        {
+            return Q.GetHashCode() ^ Arrays.GetHashCode(x, 0, 5);
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP160R2FieldElement.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 6dcbdbdfbeb7864479dc053e9004a4b2
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP160R2Point.cs

@@ -0,0 +1,249 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP160R2Point
+        : AbstractFpPoint
+    {
+        internal SecP160R2Point(ECCurve curve, ECFieldElement x, ECFieldElement y)
+            : base(curve, x, y)
+        {
+        }
+
+        internal SecP160R2Point(ECCurve curve, ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)
+            : base(curve, x, y, zs)
+        {
+        }
+
+        protected override ECPoint Detach()
+        {
+            return new SecP160R2Point(null, AffineXCoord, AffineYCoord);
+        }
+
+        public override ECPoint Add(ECPoint b)
+        {
+            if (this.IsInfinity)
+                return b;
+            if (b.IsInfinity)
+                return this;
+            if (this == b)
+                return Twice();
+
+            ECCurve curve = this.Curve;
+
+            SecP160R2FieldElement X1 = (SecP160R2FieldElement)this.RawXCoord, Y1 = (SecP160R2FieldElement)this.RawYCoord;
+            SecP160R2FieldElement X2 = (SecP160R2FieldElement)b.RawXCoord, Y2 = (SecP160R2FieldElement)b.RawYCoord;
+
+            SecP160R2FieldElement Z1 = (SecP160R2FieldElement)this.RawZCoords[0];
+            SecP160R2FieldElement Z2 = (SecP160R2FieldElement)b.RawZCoords[0];
+
+            uint c;
+            uint[] tt1 = Nat160.CreateExt();
+            uint[] t2 = Nat160.Create();
+            uint[] t3 = Nat160.Create();
+            uint[] t4 = Nat160.Create();
+
+            bool Z1IsOne = Z1.IsOne;
+            uint[] U2, S2;
+            if (Z1IsOne)
+            {
+                U2 = X2.x;
+                S2 = Y2.x;
+            }
+            else
+            {
+                S2 = t3;
+                SecP160R2Field.Square(Z1.x, S2);
+
+                U2 = t2;
+                SecP160R2Field.Multiply(S2, X2.x, U2);
+
+                SecP160R2Field.Multiply(S2, Z1.x, S2);
+                SecP160R2Field.Multiply(S2, Y2.x, S2);
+            }
+
+            bool Z2IsOne = Z2.IsOne;
+            uint[] U1, S1;
+            if (Z2IsOne)
+            {
+                U1 = X1.x;
+                S1 = Y1.x;
+            }
+            else
+            {
+                S1 = t4;
+                SecP160R2Field.Square(Z2.x, S1);
+
+                U1 = tt1;
+                SecP160R2Field.Multiply(S1, X1.x, U1);
+
+                SecP160R2Field.Multiply(S1, Z2.x, S1);
+                SecP160R2Field.Multiply(S1, Y1.x, S1);
+            }
+
+            uint[] H = Nat160.Create();
+            SecP160R2Field.Subtract(U1, U2, H);
+
+            uint[] R = t2;
+            SecP160R2Field.Subtract(S1, S2, R);
+
+            // Check if b == this or b == -this
+            if (Nat160.IsZero(H))
+            {
+                if (Nat160.IsZero(R))
+                {
+                    // this == b, i.e. this must be doubled
+                    return this.Twice();
+                }
+
+                // this == -b, i.e. the result is the point at infinity
+                return curve.Infinity;
+            }
+
+            uint[] HSquared = t3;
+            SecP160R2Field.Square(H, HSquared);
+
+            uint[] G = Nat160.Create();
+            SecP160R2Field.Multiply(HSquared, H, G);
+
+            uint[] V = t3;
+            SecP160R2Field.Multiply(HSquared, U1, V);
+
+            SecP160R2Field.Negate(G, G);
+            Nat160.Mul(S1, G, tt1);
+
+            c = Nat160.AddBothTo(V, V, G);
+            SecP160R2Field.Reduce32(c, G);
+
+            SecP160R2FieldElement X3 = new SecP160R2FieldElement(t4);
+            SecP160R2Field.Square(R, X3.x);
+            SecP160R2Field.Subtract(X3.x, G, X3.x);
+
+            SecP160R2FieldElement Y3 = new SecP160R2FieldElement(G);
+            SecP160R2Field.Subtract(V, X3.x, Y3.x);
+            SecP160R2Field.MultiplyAddToExt(Y3.x, R, tt1);
+            SecP160R2Field.Reduce(tt1, Y3.x);
+
+            SecP160R2FieldElement Z3 = new SecP160R2FieldElement(H);
+            if (!Z1IsOne)
+            {
+                SecP160R2Field.Multiply(Z3.x, Z1.x, Z3.x);
+            }
+            if (!Z2IsOne)
+            {
+                SecP160R2Field.Multiply(Z3.x, Z2.x, Z3.x);
+            }
+
+            ECFieldElement[] zs = new ECFieldElement[]{ Z3 };
+
+            return new SecP160R2Point(curve, X3, Y3, zs);
+        }
+
+        public override ECPoint Twice()
+        {
+            if (this.IsInfinity)
+                return this;
+
+            ECCurve curve = this.Curve;
+
+            SecP160R2FieldElement Y1 = (SecP160R2FieldElement)this.RawYCoord;
+            if (Y1.IsZero)
+                return curve.Infinity;
+
+            SecP160R2FieldElement X1 = (SecP160R2FieldElement)this.RawXCoord, Z1 = (SecP160R2FieldElement)this.RawZCoords[0];
+
+            uint c;
+            uint[] t1 = Nat160.Create();
+            uint[] t2 = Nat160.Create();
+
+            uint[] Y1Squared = Nat160.Create();
+            SecP160R2Field.Square(Y1.x, Y1Squared);
+
+            uint[] T = Nat160.Create();
+            SecP160R2Field.Square(Y1Squared, T);
+
+            bool Z1IsOne = Z1.IsOne;
+
+            uint[] Z1Squared = Z1.x;
+            if (!Z1IsOne)
+            {
+                Z1Squared = t2;
+                SecP160R2Field.Square(Z1.x, Z1Squared);
+            }
+
+            SecP160R2Field.Subtract(X1.x, Z1Squared, t1);
+
+            uint[] M = t2;
+            SecP160R2Field.Add(X1.x, Z1Squared, M);
+            SecP160R2Field.Multiply(M, t1, M);
+            c = Nat160.AddBothTo(M, M, M);
+            SecP160R2Field.Reduce32(c, M);
+
+            uint[] S = Y1Squared;
+            SecP160R2Field.Multiply(Y1Squared, X1.x, S);
+            c = Nat.ShiftUpBits(5, S, 2, 0);
+            SecP160R2Field.Reduce32(c, S);
+
+            c = Nat.ShiftUpBits(5, T, 3, 0, t1);
+            SecP160R2Field.Reduce32(c, t1);
+
+            SecP160R2FieldElement X3 = new SecP160R2FieldElement(T);
+            SecP160R2Field.Square(M, X3.x);
+            SecP160R2Field.Subtract(X3.x, S, X3.x);
+            SecP160R2Field.Subtract(X3.x, S, X3.x);
+
+            SecP160R2FieldElement Y3 = new SecP160R2FieldElement(S);
+            SecP160R2Field.Subtract(S, X3.x, Y3.x);
+            SecP160R2Field.Multiply(Y3.x, M, Y3.x);
+            SecP160R2Field.Subtract(Y3.x, t1, Y3.x);
+
+            SecP160R2FieldElement Z3 = new SecP160R2FieldElement(M);
+            SecP160R2Field.Twice(Y1.x, Z3.x);
+            if (!Z1IsOne)
+            {
+                SecP160R2Field.Multiply(Z3.x, Z1.x, Z3.x);
+            }
+
+            return new SecP160R2Point(curve, X3, Y3, new ECFieldElement[]{ Z3 });
+        }
+
+        public override ECPoint TwicePlus(ECPoint b)
+        {
+            if (this == b)
+                return ThreeTimes();
+            if (this.IsInfinity)
+                return b;
+            if (b.IsInfinity)
+                return Twice();
+
+            ECFieldElement Y1 = this.RawYCoord;
+            if (Y1.IsZero)
+                return b;
+
+            return Twice().Add(b);
+        }
+
+        public override ECPoint ThreeTimes()
+        {
+            if (this.IsInfinity || this.RawYCoord.IsZero)
+                return this;
+
+            // NOTE: Be careful about recursions between TwicePlus and ThreeTimes
+            return Twice().Add(this);
+        }
+
+        public override ECPoint Negate()
+        {
+            if (IsInfinity)
+                return this;
+
+            return new SecP160R2Point(Curve, this.RawXCoord, this.RawYCoord.Negate(), this.RawZCoords);
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP160R2Point.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: a4cbae21702094a47bdafac12ade6c28
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP192K1Curve.cs

@@ -0,0 +1,172 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities.Encoders;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP192K1Curve
+        : AbstractFpCurve
+    {
+        public static readonly BigInteger q = SecP192K1FieldElement.Q;
+
+        private const int SECP192K1_DEFAULT_COORDS = COORD_JACOBIAN;
+        private const int SECP192K1_FE_INTS = 6;
+        private static readonly ECFieldElement[] SECP192K1_AFFINE_ZS = new ECFieldElement[] { new SecP192K1FieldElement(BigInteger.One) };
+
+        protected readonly SecP192K1Point m_infinity;
+
+        public SecP192K1Curve()
+            : base(q)
+        {
+            this.m_infinity = new SecP192K1Point(this, null, null);
+
+            this.m_a = FromBigInteger(BigInteger.Zero);
+            this.m_b = FromBigInteger(BigInteger.ValueOf(3));
+            this.m_order = new BigInteger(1, Hex.DecodeStrict("FFFFFFFFFFFFFFFFFFFFFFFE26F2FC170F69466A74DEFD8D"));
+            this.m_cofactor = BigInteger.One;
+            this.m_coord = SECP192K1_DEFAULT_COORDS;
+        }
+
+        protected override ECCurve CloneCurve()
+        {
+            return new SecP192K1Curve();
+        }
+
+        public override bool SupportsCoordinateSystem(int coord)
+        {
+            switch (coord)
+            {
+                case COORD_JACOBIAN:
+                    return true;
+                default:
+                    return false;
+            }
+        }
+
+        public virtual BigInteger Q
+        {
+            get { return q; }
+        }
+
+        public override ECPoint Infinity
+        {
+            get { return m_infinity; }
+        }
+
+        public override int FieldSize
+        {
+            get { return q.BitLength; }
+        }
+
+        public override ECFieldElement FromBigInteger(BigInteger x)
+        {
+            return new SecP192K1FieldElement(x);
+        }
+
+        protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y)
+        {
+            return new SecP192K1Point(this, x, y);
+        }
+
+        protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)
+        {
+            return new SecP192K1Point(this, x, y, zs);
+        }
+
+        public override ECLookupTable CreateCacheSafeLookupTable(ECPoint[] points, int off, int len)
+        {
+            uint[] table = new uint[len * SECP192K1_FE_INTS * 2];
+            {
+                int pos = 0;
+                for (int i = 0; i < len; ++i)
+                {
+                    ECPoint p = points[off + i];
+                    Nat192.Copy(((SecP192K1FieldElement)p.RawXCoord).x, 0, table, pos); pos += SECP192K1_FE_INTS;
+                    Nat192.Copy(((SecP192K1FieldElement)p.RawYCoord).x, 0, table, pos); pos += SECP192K1_FE_INTS;
+                }
+            }
+
+            return new SecP192K1LookupTable(this, table, len);
+        }
+
+        public override ECFieldElement RandomFieldElement(SecureRandom r)
+        {
+            uint[] x = Nat192.Create();
+            SecP192K1Field.Random(r, x);
+            return new SecP192K1FieldElement(x);
+        }
+
+        public override ECFieldElement RandomFieldElementMult(SecureRandom r)
+        {
+            uint[] x = Nat192.Create();
+            SecP192K1Field.RandomMult(r, x);
+            return new SecP192K1FieldElement(x);
+        }
+
+        private class SecP192K1LookupTable
+            : AbstractECLookupTable
+        {
+            private readonly SecP192K1Curve m_outer;
+            private readonly uint[] m_table;
+            private readonly int m_size;
+
+            internal SecP192K1LookupTable(SecP192K1Curve outer, uint[] table, int size)
+            {
+                this.m_outer = outer;
+                this.m_table = table;
+                this.m_size = size;
+            }
+
+            public override int Size
+            {
+                get { return m_size; }
+            }
+
+            public override ECPoint Lookup(int index)
+            {
+                uint[] x = Nat192.Create(), y = Nat192.Create();
+                int pos = 0;
+
+                for (int i = 0; i < m_size; ++i)
+                {
+                    uint MASK = (uint)(((i ^ index) - 1) >> 31);
+
+                    for (int j = 0; j < SECP192K1_FE_INTS; ++j)
+                    {
+                        x[j] ^= m_table[pos + j] & MASK;
+                        y[j] ^= m_table[pos + SECP192K1_FE_INTS + j] & MASK;
+                    }
+
+                    pos += (SECP192K1_FE_INTS * 2);
+                }
+
+                return CreatePoint(x, y);
+            }
+
+            public override ECPoint LookupVar(int index)
+            {
+                uint[] x = Nat192.Create(), y = Nat192.Create();
+                int pos = index * SECP192K1_FE_INTS * 2;
+
+                for (int j = 0; j < SECP192K1_FE_INTS; ++j)
+                {
+                    x[j] = m_table[pos + j];
+                    y[j] = m_table[pos + SECP192K1_FE_INTS + j];
+                }
+
+                return CreatePoint(x, y);
+            }
+
+            private ECPoint CreatePoint(uint[] x, uint[] y)
+            {
+                return m_outer.CreateRawPoint(new SecP192K1FieldElement(x), new SecP192K1FieldElement(y), SECP192K1_AFFINE_ZS);
+            }
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP192K1Curve.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 956ec0f59602e03408afd341170ff390
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP192K1Field.cs

@@ -0,0 +1,221 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+using System.Diagnostics;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto.Utilities;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP192K1Field
+    {
+        // 2^192 - 2^32 - 2^12 - 2^8 - 2^7 - 2^6 - 2^3 - 1
+        internal static readonly uint[] P = new uint[]{ 0xFFFFEE37, 0xFFFFFFFE, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
+            0xFFFFFFFF };
+        private static readonly uint[] PExt = new uint[]{ 0x013C4FD1, 0x00002392, 0x00000001, 0x00000000, 0x00000000,
+            0x00000000, 0xFFFFDC6E, 0xFFFFFFFD, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF };
+        private static readonly uint[] PExtInv = new uint[]{ 0xFEC3B02F, 0xFFFFDC6D, 0xFFFFFFFE, 0xFFFFFFFF,
+            0xFFFFFFFF, 0xFFFFFFFF, 0x00002391, 0x00000002 };
+        private const uint P5 = 0xFFFFFFFF;
+        private const uint PExt11 = 0xFFFFFFFF;
+        private const uint PInv33 = 0x11C9;
+
+        public static void Add(uint[] x, uint[] y, uint[] z)
+        {
+            uint c = Nat192.Add(x, y, z);
+            if (c != 0 || (z[5] == P5 && Nat192.Gte(z, P)))
+            {
+                Nat.Add33To(6, PInv33, z);
+            }
+        }
+
+        public static void AddExt(uint[] xx, uint[] yy, uint[] zz)
+        {
+            uint c = Nat.Add(12, xx, yy, zz);
+            if (c != 0 || (zz[11] == PExt11 && Nat.Gte(12, zz, PExt)))
+            {
+                if (Nat.AddTo(PExtInv.Length, PExtInv, zz) != 0)
+                {
+                    Nat.IncAt(12, zz, PExtInv.Length);
+                }
+            }
+        }
+
+        public static void AddOne(uint[] x, uint[] z)
+        {
+            uint c = Nat.Inc(6, x, z);
+            if (c != 0 || (z[5] == P5 && Nat192.Gte(z, P)))
+            {
+                Nat.Add33To(6, PInv33, z);
+            }
+        }
+
+        public static uint[] FromBigInteger(BigInteger x)
+        {
+            uint[] z = Nat.FromBigInteger(192, x);
+            if (z[5] == P5 && Nat192.Gte(z, P))
+            {
+                Nat192.SubFrom(P, z);
+            }
+            return z;
+        }
+
+        public static void Half(uint[] x, uint[] z)
+        {
+            if ((x[0] & 1) == 0)
+            {
+                Nat.ShiftDownBit(6, x, 0, z);
+            }
+            else
+            {
+                uint c = Nat192.Add(x, P, z);
+                Nat.ShiftDownBit(6, z, c);
+            }
+        }
+
+        public static void Inv(uint[] x, uint[] z)
+        {
+            Mod.CheckedModOddInverse(P, x, z);
+        }
+
+        public static int IsZero(uint[] x)
+        {
+            uint d = 0;
+            for (int i = 0; i < 6; ++i)
+            {
+                d |= x[i];
+            }
+            d = (d >> 1) | (d & 1);
+            return ((int)d - 1) >> 31;
+        }
+
+        public static void Multiply(uint[] x, uint[] y, uint[] z)
+        {
+            uint[] tt = Nat192.CreateExt();
+            Nat192.Mul(x, y, tt);
+            Reduce(tt, z);
+        }
+
+        public static void MultiplyAddToExt(uint[] x, uint[] y, uint[] zz)
+        {
+            uint c = Nat192.MulAddTo(x, y, zz);
+            if (c != 0 || (zz[11] == PExt11 && Nat.Gte(12, zz, PExt)))
+            {
+                if (Nat.AddTo(PExtInv.Length, PExtInv, zz) != 0)
+                {
+                    Nat.IncAt(12, zz, PExtInv.Length);
+                }
+            }
+        }
+
+        public static void Negate(uint[] x, uint[] z)
+        {
+            if (0 != IsZero(x))
+            {
+                Nat192.Sub(P, P, z);
+            }
+            else
+            {
+                Nat192.Sub(P, x, z);
+            }
+        }
+
+        public static void Random(SecureRandom r, uint[] z)
+        {
+            byte[] bb = new byte[6 * 4];
+            do
+            {
+                r.NextBytes(bb);
+                Pack.LE_To_UInt32(bb, 0, z, 0, 6);
+            }
+            while (0 == Nat.LessThan(6, z, P));
+        }
+
+        public static void RandomMult(SecureRandom r, uint[] z)
+        {
+            do
+            {
+                Random(r, z);
+            }
+            while (0 != IsZero(z));
+        }
+
+        public static void Reduce(uint[] xx, uint[] z)
+        {
+            ulong cc = Nat192.Mul33Add(PInv33, xx, 6, xx, 0, z, 0);
+            uint c = Nat192.Mul33DWordAdd(PInv33, cc, z, 0);
+
+            Debug.Assert(c == 0 || c == 1);
+
+            if (c != 0 || (z[5] == P5 && Nat192.Gte(z, P)))
+            {
+                Nat.Add33To(6, PInv33, z);
+            }
+        }
+
+        public static void Reduce32(uint x, uint[] z)
+        {
+            if ((x != 0 && Nat192.Mul33WordAdd(PInv33, x, z, 0) != 0)
+                || (z[5] == P5 && Nat192.Gte(z, P)))
+            {
+                Nat.Add33To(6, PInv33, z);
+            }
+        }
+
+        public static void Square(uint[] x, uint[] z)
+        {
+            uint[] tt = Nat192.CreateExt();
+            Nat192.Square(x, tt);
+            Reduce(tt, z);
+        }
+
+        public static void SquareN(uint[] x, int n, uint[] z)
+        {
+            Debug.Assert(n > 0);
+
+            uint[] tt = Nat192.CreateExt();
+            Nat192.Square(x, tt);
+            Reduce(tt, z);
+
+            while (--n > 0)
+            {
+                Nat192.Square(z, tt);
+                Reduce(tt, z);
+            }
+        }
+
+        public static void Subtract(uint[] x, uint[] y, uint[] z)
+        {
+            int c = Nat192.Sub(x, y, z);
+            if (c != 0)
+            {
+                Nat.Sub33From(6, PInv33, z);
+            }
+        }
+
+        public static void SubtractExt(uint[] xx, uint[] yy, uint[] zz)
+        {
+            int c = Nat.Sub(12, xx, yy, zz);
+            if (c != 0)
+            {
+                if (Nat.SubFrom(PExtInv.Length, PExtInv, zz) != 0)
+                {
+                    Nat.DecAt(12, zz, PExtInv.Length);
+                }
+            }
+        }
+
+        public static void Twice(uint[] x, uint[] z)
+        {
+            uint c = Nat.ShiftUpBit(6, x, 0, z);
+            if (c != 0 || (z[5] == P5 && Nat192.Gte(z, P)))
+            {
+                Nat.Add33To(6, PInv33, z);
+            }
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP192K1Field.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: e387de7a272f3c74cbc975cc08467172
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP192K1FieldElement.cs

@@ -0,0 +1,218 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+using System.Diagnostics;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities.Encoders;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP192K1FieldElement
+        : AbstractFpFieldElement
+    {
+        public static readonly BigInteger Q = new BigInteger(1,
+            Hex.DecodeStrict("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFEE37"));
+
+        protected internal readonly uint[] x;
+
+        public SecP192K1FieldElement(BigInteger x)
+        {
+            if (x == null || x.SignValue < 0 || x.CompareTo(Q) >= 0)
+                throw new ArgumentException("value invalid for SecP192K1FieldElement", "x");
+
+            this.x = SecP192K1Field.FromBigInteger(x);
+        }
+
+        public SecP192K1FieldElement()
+        {
+            this.x = Nat192.Create();
+        }
+
+        protected internal SecP192K1FieldElement(uint[] x)
+        {
+            this.x = x;
+        }
+
+        public override bool IsZero
+        {
+            get { return Nat192.IsZero(x); }
+        }
+
+        public override bool IsOne
+        {
+            get { return Nat192.IsOne(x); }
+        }
+
+        public override bool TestBitZero()
+        {
+            return Nat192.GetBit(x, 0) == 1;
+        }
+
+        public override BigInteger ToBigInteger()
+        {
+            return Nat192.ToBigInteger(x);
+        }
+
+        public override string FieldName
+        {
+            get { return "SecP192K1Field"; }
+        }
+
+        public override int FieldSize
+        {
+            get { return Q.BitLength; }
+        }
+
+        public override ECFieldElement Add(ECFieldElement b)
+        {
+            uint[] z = Nat192.Create();
+            SecP192K1Field.Add(x, ((SecP192K1FieldElement)b).x, z);
+            return new SecP192K1FieldElement(z);
+        }
+
+        public override ECFieldElement AddOne()
+        {
+            uint[] z = Nat192.Create();
+            SecP192K1Field.AddOne(x, z);
+            return new SecP192K1FieldElement(z);
+        }
+
+        public override ECFieldElement Subtract(ECFieldElement b)
+        {
+            uint[] z = Nat192.Create();
+            SecP192K1Field.Subtract(x, ((SecP192K1FieldElement)b).x, z);
+            return new SecP192K1FieldElement(z);
+        }
+
+        public override ECFieldElement Multiply(ECFieldElement b)
+        {
+            uint[] z = Nat192.Create();
+            SecP192K1Field.Multiply(x, ((SecP192K1FieldElement)b).x, z);
+            return new SecP192K1FieldElement(z);
+        }
+
+        public override ECFieldElement Divide(ECFieldElement b)
+        {
+            //return Multiply(b.Invert());
+            uint[] z = Nat192.Create();
+            SecP192K1Field.Inv(((SecP192K1FieldElement)b).x, z);
+            SecP192K1Field.Multiply(z, x, z);
+            return new SecP192K1FieldElement(z);
+        }
+
+        public override ECFieldElement Negate()
+        {
+            uint[] z = Nat192.Create();
+            SecP192K1Field.Negate(x, z);
+            return new SecP192K1FieldElement(z);
+        }
+
+        public override ECFieldElement Square()
+        {
+            uint[] z = Nat192.Create();
+            SecP192K1Field.Square(x, z);
+            return new SecP192K1FieldElement(z);
+        }
+
+        public override ECFieldElement Invert()
+        {
+            uint[] z = Nat192.Create();
+            SecP192K1Field.Inv(x, z);
+            return new SecP192K1FieldElement(z);
+        }
+
+        /**
+         * return a sqrt root - the routine verifies that the calculation returns the right value - if
+         * none exists it returns null.
+         */
+        public override ECFieldElement Sqrt()
+        {
+            /*
+             * Raise this element to the exponent 2^190 - 2^30 - 2^10 - 2^6 - 2^5 - 2^4 - 2^1
+             * 
+             * Breaking up the exponent's binary representation into "repunits", we get:
+             * { 159 1s } { 1 0s } { 19 1s } { 1 0s } { 3 1s } { 3 0s } { 3 1s } { 1 0s }
+             * 
+             * Therefore we need an addition chain containing 3, 19, 159 (the lengths of the repunits)
+             * We use: 1, 2, [3], 6, 8, 16, [19], 35, 70, 140, [159]
+             */
+
+            uint[] x1 = this.x;
+            if (Nat192.IsZero(x1) || Nat192.IsOne(x1))
+                return this;
+
+            uint[] x2 = Nat192.Create();
+            SecP192K1Field.Square(x1, x2);
+            SecP192K1Field.Multiply(x2, x1, x2);
+            uint[] x3 = Nat192.Create();
+            SecP192K1Field.Square(x2, x3);
+            SecP192K1Field.Multiply(x3, x1, x3);
+            uint[] x6 = Nat192.Create();
+            SecP192K1Field.SquareN(x3, 3, x6);
+            SecP192K1Field.Multiply(x6, x3, x6);
+            uint[] x8 = x6;
+            SecP192K1Field.SquareN(x6, 2, x8);
+            SecP192K1Field.Multiply(x8, x2, x8);
+            uint[] x16 = x2;
+            SecP192K1Field.SquareN(x8, 8, x16);
+            SecP192K1Field.Multiply(x16, x8, x16);
+            uint[] x19 = x8;
+            SecP192K1Field.SquareN(x16, 3, x19);
+            SecP192K1Field.Multiply(x19, x3, x19);
+            uint[] x35 = Nat192.Create();
+            SecP192K1Field.SquareN(x19, 16, x35);
+            SecP192K1Field.Multiply(x35, x16, x35);
+            uint[] x70 = x16;
+            SecP192K1Field.SquareN(x35, 35, x70);
+            SecP192K1Field.Multiply(x70, x35, x70);
+            uint[] x140 = x35;
+            SecP192K1Field.SquareN(x70, 70, x140);
+            SecP192K1Field.Multiply(x140, x70, x140);
+            uint[] x159 = x70;
+            SecP192K1Field.SquareN(x140, 19, x159);
+            SecP192K1Field.Multiply(x159, x19, x159);
+
+            uint[] t1 = x159;
+            SecP192K1Field.SquareN(t1, 20, t1);
+            SecP192K1Field.Multiply(t1, x19, t1);
+            SecP192K1Field.SquareN(t1, 4, t1);
+            SecP192K1Field.Multiply(t1, x3, t1);
+            SecP192K1Field.SquareN(t1, 6, t1);
+            SecP192K1Field.Multiply(t1, x3, t1);
+            SecP192K1Field.Square(t1, t1);
+
+            uint[] t2 = x3;
+            SecP192K1Field.Square(t1, t2);
+
+            return Nat192.Eq(x1, t2) ? new SecP192K1FieldElement(t1) : null;
+        }
+
+        public override bool Equals(object obj)
+        {
+            return Equals(obj as SecP192K1FieldElement);
+        }
+
+        public override bool Equals(ECFieldElement other)
+        {
+            return Equals(other as SecP192K1FieldElement);
+        }
+
+        public virtual bool Equals(SecP192K1FieldElement other)
+        {
+            if (this == other)
+                return true;
+            if (null == other)
+                return false;
+            return Nat192.Eq(x, other.x);
+        }
+
+        public override int GetHashCode()
+        {
+            return Q.GetHashCode() ^ Arrays.GetHashCode(x, 0, 6);
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP192K1FieldElement.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 6b4ad382e2b622e4fa7c595b129ed9d0
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP192K1Point.cs

@@ -0,0 +1,236 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP192K1Point
+        : AbstractFpPoint
+    {
+        internal SecP192K1Point(ECCurve curve, ECFieldElement x, ECFieldElement y)
+            : base(curve, x, y)
+        {
+        }
+
+        internal SecP192K1Point(ECCurve curve, ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)
+            : base(curve, x, y, zs)
+        {
+        }
+
+        protected override ECPoint Detach()
+        {
+            return new SecP192K1Point(null, AffineXCoord, AffineYCoord);
+        }
+
+        public override ECPoint Add(ECPoint b)
+        {
+            if (this.IsInfinity)
+                return b;
+            if (b.IsInfinity)
+                return this;
+            if (this == b)
+                return Twice();
+
+            ECCurve curve = this.Curve;
+
+            SecP192K1FieldElement X1 = (SecP192K1FieldElement)this.RawXCoord, Y1 = (SecP192K1FieldElement)this.RawYCoord;
+            SecP192K1FieldElement X2 = (SecP192K1FieldElement)b.RawXCoord, Y2 = (SecP192K1FieldElement)b.RawYCoord;
+
+            SecP192K1FieldElement Z1 = (SecP192K1FieldElement)this.RawZCoords[0];
+            SecP192K1FieldElement Z2 = (SecP192K1FieldElement)b.RawZCoords[0];
+
+            uint c;
+            uint[] tt1 = Nat192.CreateExt();
+            uint[] t2 = Nat192.Create();
+            uint[] t3 = Nat192.Create();
+            uint[] t4 = Nat192.Create();
+
+            bool Z1IsOne = Z1.IsOne;
+            uint[] U2, S2;
+            if (Z1IsOne)
+            {
+                U2 = X2.x;
+                S2 = Y2.x;
+            }
+            else
+            {
+                S2 = t3;
+                SecP192K1Field.Square(Z1.x, S2);
+
+                U2 = t2;
+                SecP192K1Field.Multiply(S2, X2.x, U2);
+
+                SecP192K1Field.Multiply(S2, Z1.x, S2);
+                SecP192K1Field.Multiply(S2, Y2.x, S2);
+            }
+
+            bool Z2IsOne = Z2.IsOne;
+            uint[] U1, S1;
+            if (Z2IsOne)
+            {
+                U1 = X1.x;
+                S1 = Y1.x;
+            }
+            else
+            {
+                S1 = t4;
+                SecP192K1Field.Square(Z2.x, S1);
+
+                U1 = tt1;
+                SecP192K1Field.Multiply(S1, X1.x, U1);
+
+                SecP192K1Field.Multiply(S1, Z2.x, S1);
+                SecP192K1Field.Multiply(S1, Y1.x, S1);
+            }
+
+            uint[] H = Nat192.Create();
+            SecP192K1Field.Subtract(U1, U2, H);
+
+            uint[] R = t2;
+            SecP192K1Field.Subtract(S1, S2, R);
+
+            // Check if b == this or b == -this
+            if (Nat192.IsZero(H))
+            {
+                if (Nat192.IsZero(R))
+                {
+                    // this == b, i.e. this must be doubled
+                    return this.Twice();
+                }
+
+                // this == -b, i.e. the result is the point at infinity
+                return curve.Infinity;
+            }
+
+            uint[] HSquared = t3;
+            SecP192K1Field.Square(H, HSquared);
+
+            uint[] G = Nat192.Create();
+            SecP192K1Field.Multiply(HSquared, H, G);
+
+            uint[] V = t3;
+            SecP192K1Field.Multiply(HSquared, U1, V);
+
+            SecP192K1Field.Negate(G, G);
+            Nat192.Mul(S1, G, tt1);
+
+            c = Nat192.AddBothTo(V, V, G);
+            SecP192K1Field.Reduce32(c, G);
+
+            SecP192K1FieldElement X3 = new SecP192K1FieldElement(t4);
+            SecP192K1Field.Square(R, X3.x);
+            SecP192K1Field.Subtract(X3.x, G, X3.x);
+
+            SecP192K1FieldElement Y3 = new SecP192K1FieldElement(G);
+            SecP192K1Field.Subtract(V, X3.x, Y3.x);
+            SecP192K1Field.MultiplyAddToExt(Y3.x, R, tt1);
+            SecP192K1Field.Reduce(tt1, Y3.x);
+
+            SecP192K1FieldElement Z3 = new SecP192K1FieldElement(H);
+            if (!Z1IsOne)
+            {
+                SecP192K1Field.Multiply(Z3.x, Z1.x, Z3.x);
+            }
+            if (!Z2IsOne)
+            {
+                SecP192K1Field.Multiply(Z3.x, Z2.x, Z3.x);
+            }
+
+            ECFieldElement[] zs = new ECFieldElement[] { Z3 };
+
+            return new SecP192K1Point(curve, X3, Y3, zs);
+        }
+
+        public override ECPoint Twice()
+        {
+            if (this.IsInfinity)
+                return this;
+
+            ECCurve curve = this.Curve;
+
+            SecP192K1FieldElement Y1 = (SecP192K1FieldElement)this.RawYCoord;
+            if (Y1.IsZero)
+                return curve.Infinity;
+
+            SecP192K1FieldElement X1 = (SecP192K1FieldElement)this.RawXCoord, Z1 = (SecP192K1FieldElement)this.RawZCoords[0];
+
+            uint c;
+
+            uint[] Y1Squared = Nat192.Create();
+            SecP192K1Field.Square(Y1.x, Y1Squared);
+
+            uint[] T = Nat192.Create();
+            SecP192K1Field.Square(Y1Squared, T);
+
+            uint[] M = Nat192.Create();
+            SecP192K1Field.Square(X1.x, M);
+            c = Nat192.AddBothTo(M, M, M);
+            SecP192K1Field.Reduce32(c, M);
+
+            uint[] S = Y1Squared;
+            SecP192K1Field.Multiply(Y1Squared, X1.x, S);
+            c = Nat.ShiftUpBits(6, S, 2, 0);
+            SecP192K1Field.Reduce32(c, S);
+
+            uint[] t1 = Nat192.Create();
+            c = Nat.ShiftUpBits(6, T, 3, 0, t1);
+            SecP192K1Field.Reduce32(c, t1);
+
+            SecP192K1FieldElement X3 = new SecP192K1FieldElement(T);
+            SecP192K1Field.Square(M, X3.x);
+            SecP192K1Field.Subtract(X3.x, S, X3.x);
+            SecP192K1Field.Subtract(X3.x, S, X3.x);
+
+            SecP192K1FieldElement Y3 = new SecP192K1FieldElement(S);
+            SecP192K1Field.Subtract(S, X3.x, Y3.x);
+            SecP192K1Field.Multiply(Y3.x, M, Y3.x);
+            SecP192K1Field.Subtract(Y3.x, t1, Y3.x);
+
+            SecP192K1FieldElement Z3 = new SecP192K1FieldElement(M);
+            SecP192K1Field.Twice(Y1.x, Z3.x);
+            if (!Z1.IsOne)
+            {
+                SecP192K1Field.Multiply(Z3.x, Z1.x, Z3.x);
+            }
+
+            return new SecP192K1Point(curve, X3, Y3, new ECFieldElement[] { Z3 });
+        }
+
+        public override ECPoint TwicePlus(ECPoint b)
+        {
+            if (this == b)
+                return ThreeTimes();
+            if (this.IsInfinity)
+                return b;
+            if (b.IsInfinity)
+                return Twice();
+
+            ECFieldElement Y1 = this.RawYCoord;
+            if (Y1.IsZero)
+                return b;
+
+            return Twice().Add(b);
+        }
+
+        public override ECPoint ThreeTimes()
+        {
+            if (this.IsInfinity || this.RawYCoord.IsZero)
+                return this;
+
+            // NOTE: Be careful about recursions between TwicePlus and ThreeTimes
+            return Twice().Add(this);
+        }
+
+        public override ECPoint Negate()
+        {
+            if (IsInfinity)
+                return this;
+
+            return new SecP192K1Point(Curve, RawXCoord, RawYCoord.Negate(), RawZCoords);
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP192K1Point.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: a3d1420e93e58f04a851be43a58445da
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP192R1Curve.cs

@@ -0,0 +1,175 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities.Encoders;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP192R1Curve
+        : AbstractFpCurve
+    {
+        public static readonly BigInteger q = SecP192R1FieldElement.Q;
+
+        private const int SECP192R1_DEFAULT_COORDS = COORD_JACOBIAN;
+        private const int SECP192R1_FE_INTS = 6;
+        private static readonly ECFieldElement[] SECP192R1_AFFINE_ZS = new ECFieldElement[] { new SecP192R1FieldElement(BigInteger.One) };
+
+        protected readonly SecP192R1Point m_infinity;
+
+        public SecP192R1Curve()
+            : base(q)
+        {
+            this.m_infinity = new SecP192R1Point(this, null, null);
+
+            this.m_a = FromBigInteger(new BigInteger(1,
+                Hex.DecodeStrict("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFC")));
+            this.m_b = FromBigInteger(new BigInteger(1,
+                Hex.DecodeStrict("64210519E59C80E70FA7E9AB72243049FEB8DEECC146B9B1")));
+            this.m_order = new BigInteger(1, Hex.DecodeStrict("FFFFFFFFFFFFFFFFFFFFFFFF99DEF836146BC9B1B4D22831"));
+            this.m_cofactor = BigInteger.One;
+
+            this.m_coord = SECP192R1_DEFAULT_COORDS;
+        }
+
+        protected override ECCurve CloneCurve()
+        {
+            return new SecP192R1Curve();
+        }
+
+        public override bool SupportsCoordinateSystem(int coord)
+        {
+            switch (coord)
+            {
+            case COORD_JACOBIAN:
+                return true;
+            default:
+                return false;
+            }
+        }
+
+        public virtual BigInteger Q
+        {
+            get { return q; }
+        }
+
+        public override ECPoint Infinity
+        {
+            get { return m_infinity; }
+        }
+
+        public override int FieldSize
+        {
+            get { return q.BitLength; }
+        }
+
+        public override ECFieldElement FromBigInteger(BigInteger x)
+        {
+            return new SecP192R1FieldElement(x);
+        }
+
+        protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y)
+        {
+            return new SecP192R1Point(this, x, y);
+        }
+
+        protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)
+        {
+            return new SecP192R1Point(this, x, y, zs);
+        }
+
+        public override ECLookupTable CreateCacheSafeLookupTable(ECPoint[] points, int off, int len)
+        {
+            uint[] table = new uint[len * SECP192R1_FE_INTS * 2];
+            {
+                int pos = 0;
+                for (int i = 0; i < len; ++i)
+                {
+                    ECPoint p = points[off + i];
+                    Nat192.Copy(((SecP192R1FieldElement)p.RawXCoord).x, 0, table, pos); pos += SECP192R1_FE_INTS;
+                    Nat192.Copy(((SecP192R1FieldElement)p.RawYCoord).x, 0, table, pos); pos += SECP192R1_FE_INTS;
+                }
+            }
+
+            return new SecP192R1LookupTable(this, table, len);
+        }
+
+        public override ECFieldElement RandomFieldElement(SecureRandom r)
+        {
+            uint[] x = Nat192.Create();
+            SecP192R1Field.Random(r, x);
+            return new SecP192R1FieldElement(x);
+        }
+
+        public override ECFieldElement RandomFieldElementMult(SecureRandom r)
+        {
+            uint[] x = Nat192.Create();
+            SecP192R1Field.RandomMult(r, x);
+            return new SecP192R1FieldElement(x);
+        }
+
+        private class SecP192R1LookupTable
+            : AbstractECLookupTable
+        {
+            private readonly SecP192R1Curve m_outer;
+            private readonly uint[] m_table;
+            private readonly int m_size;
+
+            internal SecP192R1LookupTable(SecP192R1Curve outer, uint[] table, int size)
+            {
+                this.m_outer = outer;
+                this.m_table = table;
+                this.m_size = size;
+            }
+
+            public override int Size
+            {
+                get { return m_size; }
+            }
+
+            public override ECPoint Lookup(int index)
+            {
+                uint[] x = Nat192.Create(), y = Nat192.Create();
+                int pos = 0;
+
+                for (int i = 0; i < m_size; ++i)
+                {
+                    uint MASK = (uint)(((i ^ index) - 1) >> 31);
+
+                    for (int j = 0; j < SECP192R1_FE_INTS; ++j)
+                    {
+                        x[j] ^= m_table[pos + j] & MASK;
+                        y[j] ^= m_table[pos + SECP192R1_FE_INTS + j] & MASK;
+                    }
+
+                    pos += (SECP192R1_FE_INTS * 2);
+                }
+
+                return CreatePoint(x, y);
+            }
+
+            public override ECPoint LookupVar(int index)
+            {
+                uint[] x = Nat192.Create(), y = Nat192.Create();
+                int pos = index * SECP192R1_FE_INTS * 2;
+
+                for (int j = 0; j < SECP192R1_FE_INTS; ++j)
+                {
+                    x[j] = m_table[pos + j];
+                    y[j] = m_table[pos + SECP192R1_FE_INTS + j];
+                }
+
+                return CreatePoint(x, y);
+            }
+
+            private ECPoint CreatePoint(uint[] x, uint[] y)
+            {
+                return m_outer.CreateRawPoint(new SecP192R1FieldElement(x), new SecP192R1FieldElement(y), SECP192R1_AFFINE_ZS);
+            }
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP192R1Curve.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 804ccccce56de074eb8ebec2c3939340
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP192R1Field.cs

@@ -0,0 +1,326 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+using System.Diagnostics;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto.Utilities;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP192R1Field
+    {
+        // 2^192 - 2^64 - 1
+        internal static readonly uint[] P = new uint[]{ 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFE, 0xFFFFFFFF, 0xFFFFFFFF,
+            0xFFFFFFFF };
+        private static readonly uint[] PExt = new uint[]{ 0x00000001, 0x00000000, 0x00000002, 0x00000000, 0x00000001,
+            0x00000000, 0xFFFFFFFE, 0xFFFFFFFF, 0xFFFFFFFD, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF };
+        private static readonly uint[] PExtInv = new uint[]{ 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFD, 0xFFFFFFFF,
+            0xFFFFFFFE, 0xFFFFFFFF, 0x00000001, 0x00000000, 0x00000002 };
+        private const uint P5 = 0xFFFFFFFF;
+        private const uint PExt11 = 0xFFFFFFFF;
+
+        public static void Add(uint[] x, uint[] y, uint[] z)
+        {
+            uint c = Nat192.Add(x, y, z);
+            if (c != 0 || (z[5] == P5 && Nat192.Gte(z, P)))
+            {
+                AddPInvTo(z);
+            }
+        }
+
+        public static void AddExt(uint[] xx, uint[] yy, uint[] zz)
+        {
+            uint c = Nat.Add(12, xx, yy, zz);
+            if (c != 0 || (zz[11] == PExt11 && Nat.Gte(12, zz, PExt)))
+            {
+                if (Nat.AddTo(PExtInv.Length, PExtInv, zz) != 0)
+                {
+                    Nat.IncAt(12, zz, PExtInv.Length);
+                }
+            }
+        }
+
+        public static void AddOne(uint[] x, uint[] z)
+        {
+            uint c = Nat.Inc(6, x, z);
+            if (c != 0 || (z[5] == P5 && Nat192.Gte(z, P)))
+            {
+                AddPInvTo(z);
+            }
+        }
+
+        public static uint[] FromBigInteger(BigInteger x)
+        {
+            uint[] z = Nat.FromBigInteger(192, x);
+            if (z[5] == P5 && Nat192.Gte(z, P))
+            {
+                Nat192.SubFrom(P, z);
+            }
+            return z;
+        }
+
+        public static void Half(uint[] x, uint[] z)
+        {
+            if ((x[0] & 1) == 0)
+            {
+                Nat.ShiftDownBit(6, x, 0, z);
+            }
+            else
+            {
+                uint c = Nat192.Add(x, P, z);
+                Nat.ShiftDownBit(6, z, c);
+            }
+        }
+
+        public static void Inv(uint[] x, uint[] z)
+        {
+            Mod.CheckedModOddInverse(P, x, z);
+        }
+
+        public static int IsZero(uint[] x)
+        {
+            uint d = 0;
+            for (int i = 0; i < 6; ++i)
+            {
+                d |= x[i];
+            }
+            d = (d >> 1) | (d & 1);
+            return ((int)d - 1) >> 31;
+        }
+
+        public static void Multiply(uint[] x, uint[] y, uint[] z)
+        {
+            uint[] tt = Nat192.CreateExt();
+            Nat192.Mul(x, y, tt);
+            Reduce(tt, z);
+        }
+
+        public static void MultiplyAddToExt(uint[] x, uint[] y, uint[] zz)
+        {
+            uint c = Nat192.MulAddTo(x, y, zz);
+            if (c != 0 || (zz[11] == PExt11 && Nat.Gte(12, zz, PExt)))
+            {
+                if (Nat.AddTo(PExtInv.Length, PExtInv, zz) != 0)
+                {
+                    Nat.IncAt(12, zz, PExtInv.Length);
+                }
+            }
+        }
+
+        public static void Negate(uint[] x, uint[] z)
+        {
+            if (0 != IsZero(x))
+            {
+                Nat192.Sub(P, P, z);
+            }
+            else
+            {
+                Nat192.Sub(P, x, z);
+            }
+        }
+
+        public static void Random(SecureRandom r, uint[] z)
+        {
+            byte[] bb = new byte[6 * 4];
+            do
+            {
+                r.NextBytes(bb);
+                Pack.LE_To_UInt32(bb, 0, z, 0, 6);
+            }
+            while (0 == Nat.LessThan(6, z, P));
+        }
+
+        public static void RandomMult(SecureRandom r, uint[] z)
+        {
+            do
+            {
+                Random(r, z);
+            }
+            while (0 != IsZero(z));
+        }
+
+        public static void Reduce(uint[] xx, uint[] z)
+        {
+            ulong xx06 = xx[6], xx07 = xx[7], xx08 = xx[8];
+            ulong xx09 = xx[9], xx10 = xx[10], xx11 = xx[11];
+
+            ulong t0 = xx06 + xx10;
+            ulong t1 = xx07 + xx11;
+
+            ulong cc = 0;
+            cc += (ulong)xx[0] + t0;
+            uint z0 = (uint)cc;
+            cc >>= 32;
+            cc += (ulong)xx[1] + t1;
+            z[1] = (uint)cc;
+            cc >>= 32;
+
+            t0 += xx08;
+            t1 += xx09;
+
+            cc += (ulong)xx[2] + t0;
+            ulong z2 = (uint)cc;
+            cc >>= 32;
+            cc += (ulong)xx[3] + t1;
+            z[3] = (uint)cc;
+            cc >>= 32;
+
+            t0 -= xx06;
+            t1 -= xx07;
+
+            cc += (ulong)xx[4] + t0;
+            z[4] = (uint)cc;
+            cc >>= 32;
+            cc += (ulong)xx[5] + t1;
+            z[5] = (uint)cc;
+            cc >>= 32;
+
+            z2 += cc;
+
+            cc += z0;
+            z[0] = (uint)cc;
+            cc >>= 32;
+            if (cc != 0)
+            {
+                cc += z[1];
+                z[1] = (uint)cc;
+                z2 += cc >> 32;
+            }
+            z[2] = (uint)z2;
+            cc  = z2 >> 32;
+
+            Debug.Assert(cc == 0 || cc == 1);
+
+            if ((cc != 0 && Nat.IncAt(6, z, 3) != 0)
+                || (z[5] == P5 && Nat192.Gte(z, P)))
+            {
+                AddPInvTo(z);
+            }
+        }
+
+        public static void Reduce32(uint x, uint[] z)
+        {
+            ulong cc = 0;
+
+            if (x != 0)
+            {
+                cc += (ulong)z[0] + x;
+                z[0] = (uint)cc;
+                cc >>= 32;
+                if (cc != 0)
+                {
+                    cc += (ulong)z[1];
+                    z[1] = (uint)cc;
+                    cc >>= 32;
+                }
+                cc += (ulong)z[2] + x;
+                z[2] = (uint)cc;
+                cc >>= 32;
+
+                Debug.Assert(cc == 0 || cc == 1);
+            }
+
+            if ((cc != 0 && Nat.IncAt(6, z, 3) != 0)
+                || (z[5] == P5 && Nat192.Gte(z, P)))
+            {
+                AddPInvTo(z);
+            }
+        }
+
+        public static void Square(uint[] x, uint[] z)
+        {
+            uint[] tt = Nat192.CreateExt();
+            Nat192.Square(x, tt);
+            Reduce(tt, z);
+        }
+
+        public static void SquareN(uint[] x, int n, uint[] z)
+        {
+            Debug.Assert(n > 0);
+
+            uint[] tt = Nat192.CreateExt();
+            Nat192.Square(x, tt);
+            Reduce(tt, z);
+
+            while (--n > 0)
+            {
+                Nat192.Square(z, tt);
+                Reduce(tt, z);
+            }
+        }
+
+        public static void Subtract(uint[] x, uint[] y, uint[] z)
+        {
+            int c = Nat192.Sub(x, y, z);
+            if (c != 0)
+            {
+                SubPInvFrom(z);
+            }
+        }
+
+        public static void SubtractExt(uint[] xx, uint[] yy, uint[] zz)
+        {
+            int c = Nat.Sub(12, xx, yy, zz);
+            if (c != 0)
+            {
+                if (Nat.SubFrom(PExtInv.Length, PExtInv, zz) != 0)
+                {
+                    Nat.DecAt(12, zz, PExtInv.Length);
+                }
+            }
+        }
+
+        public static void Twice(uint[] x, uint[] z)
+        {
+            uint c = Nat.ShiftUpBit(6, x, 0, z);
+            if (c != 0 || (z[5] == P5 && Nat192.Gte(z, P)))
+            {
+                AddPInvTo(z);
+            }
+        }
+
+        private static void AddPInvTo(uint[] z)
+        {
+            long c = (long)z[0] + 1;
+            z[0] = (uint)c;
+            c >>= 32;
+            if (c != 0)
+            {
+                c += (long)z[1];
+                z[1] = (uint)c;
+                c >>= 32;
+            }
+            c += (long)z[2] + 1;
+            z[2] = (uint)c;
+            c >>= 32;
+            if (c != 0)
+            {
+                Nat.IncAt(6, z, 3);
+            }
+        }
+
+        private static void SubPInvFrom(uint[] z)
+        {
+            long c = (long)z[0] - 1;
+            z[0] = (uint)c;
+            c >>= 32;
+            if (c != 0)
+            {
+                c += (long)z[1];
+                z[1] = (uint)c;
+                c >>= 32;
+            }
+            c += (long)z[2] - 1;
+            z[2] = (uint)c;
+            c >>= 32;
+            if (c != 0)
+            {
+                Nat.DecAt(6, z, 3);
+            }
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP192R1Field.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 135629c36ebb8664584912ab9c807117
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP192R1FieldElement.cs

@@ -0,0 +1,193 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities.Encoders;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP192R1FieldElement
+        : AbstractFpFieldElement
+    {
+        public static readonly BigInteger Q = new BigInteger(1,
+            Hex.DecodeStrict("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFF"));
+
+        protected internal readonly uint[] x;
+
+        public SecP192R1FieldElement(BigInteger x)
+        {
+            if (x == null || x.SignValue < 0 || x.CompareTo(Q) >= 0)
+                throw new ArgumentException("value invalid for SecP192R1FieldElement", "x");
+
+            this.x = SecP192R1Field.FromBigInteger(x);
+        }
+
+        public SecP192R1FieldElement()
+        {
+            this.x = Nat192.Create();
+        }
+
+        protected internal SecP192R1FieldElement(uint[] x)
+        {
+            this.x = x;
+        }
+
+        public override bool IsZero
+        {
+            get { return Nat192.IsZero(x); }
+        }
+
+        public override bool IsOne
+        {
+            get { return Nat192.IsOne(x); }
+        }
+
+        public override bool TestBitZero()
+        {
+            return Nat192.GetBit(x, 0) == 1;
+        }
+
+        public override BigInteger ToBigInteger()
+        {
+            return Nat192.ToBigInteger(x);
+        }
+
+        public override string FieldName
+        {
+            get { return "SecP192R1Field"; }
+        }
+
+        public override int FieldSize
+        {
+            get { return Q.BitLength; }
+        }
+
+        public override ECFieldElement Add(ECFieldElement b)
+        {
+            uint[] z = Nat192.Create();
+            SecP192R1Field.Add(x, ((SecP192R1FieldElement)b).x, z);
+            return new SecP192R1FieldElement(z);
+        }
+
+        public override ECFieldElement AddOne()
+        {
+            uint[] z = Nat192.Create();
+            SecP192R1Field.AddOne(x, z);
+            return new SecP192R1FieldElement(z);
+        }
+
+        public override ECFieldElement Subtract(ECFieldElement b)
+        {
+            uint[] z = Nat192.Create();
+            SecP192R1Field.Subtract(x, ((SecP192R1FieldElement)b).x, z);
+            return new SecP192R1FieldElement(z);
+        }
+
+        public override ECFieldElement Multiply(ECFieldElement b)
+        {
+            uint[] z = Nat192.Create();
+            SecP192R1Field.Multiply(x, ((SecP192R1FieldElement)b).x, z);
+            return new SecP192R1FieldElement(z);
+        }
+
+        public override ECFieldElement Divide(ECFieldElement b)
+        {
+            //return Multiply(b.Invert());
+            uint[] z = Nat192.Create();
+            SecP192R1Field.Inv(((SecP192R1FieldElement)b).x, z);
+            SecP192R1Field.Multiply(z, x, z);
+            return new SecP192R1FieldElement(z);
+        }
+
+        public override ECFieldElement Negate()
+        {
+            uint[] z = Nat192.Create();
+            SecP192R1Field.Negate(x, z);
+            return new SecP192R1FieldElement(z);
+        }
+
+        public override ECFieldElement Square()
+        {
+            uint[] z = Nat192.Create();
+            SecP192R1Field.Square(x, z);
+            return new SecP192R1FieldElement(z);
+        }
+
+        public override ECFieldElement Invert()
+        {
+            uint[] z = Nat192.Create();
+            SecP192R1Field.Inv(x, z);
+            return new SecP192R1FieldElement(z);
+        }
+
+        /**
+         * return a sqrt root - the routine verifies that the calculation returns the right value - if
+         * none exists it returns null.
+         */
+        public override ECFieldElement Sqrt()
+        {
+            // Raise this element to the exponent 2^190 - 2^62
+
+            uint[] x1 = this.x;
+            if (Nat192.IsZero(x1) || Nat192.IsOne(x1))
+                return this;
+
+            uint[] t1 = Nat192.Create();
+            uint[] t2 = Nat192.Create();
+
+            SecP192R1Field.Square(x1, t1);
+            SecP192R1Field.Multiply(t1, x1, t1);
+
+            SecP192R1Field.SquareN(t1, 2, t2);
+            SecP192R1Field.Multiply(t2, t1, t2);
+
+            SecP192R1Field.SquareN(t2, 4, t1);
+            SecP192R1Field.Multiply(t1, t2, t1);
+
+            SecP192R1Field.SquareN(t1, 8, t2);
+            SecP192R1Field.Multiply(t2, t1, t2);
+
+            SecP192R1Field.SquareN(t2, 16, t1);
+            SecP192R1Field.Multiply(t1, t2, t1);
+
+            SecP192R1Field.SquareN(t1, 32, t2);
+            SecP192R1Field.Multiply(t2, t1, t2);
+
+            SecP192R1Field.SquareN(t2, 64, t1);
+            SecP192R1Field.Multiply(t1, t2, t1);
+
+            SecP192R1Field.SquareN(t1, 62, t1);
+            SecP192R1Field.Square(t1, t2);
+
+            return Nat192.Eq(x1, t2) ? new SecP192R1FieldElement(t1) : null;
+        }
+
+        public override bool Equals(object obj)
+        {
+            return Equals(obj as SecP192R1FieldElement);
+        }
+
+        public override bool Equals(ECFieldElement other)
+        {
+            return Equals(other as SecP192R1FieldElement);
+        }
+
+        public virtual bool Equals(SecP192R1FieldElement other)
+        {
+            if (this == other)
+                return true;
+            if (null == other)
+                return false;
+            return Nat192.Eq(x, other.x);
+        }
+
+        public override int GetHashCode()
+        {
+            return Q.GetHashCode() ^ Arrays.GetHashCode(x, 0, 6);
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP192R1FieldElement.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: f25dd4ee3aacb3143b980262b93981eb
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP192R1Point.cs

@@ -0,0 +1,249 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP192R1Point
+        : AbstractFpPoint
+    {
+        internal SecP192R1Point(ECCurve curve, ECFieldElement x, ECFieldElement y)
+            : base(curve, x, y)
+        {
+        }
+
+        internal SecP192R1Point(ECCurve curve, ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)
+            : base(curve, x, y, zs)
+        {
+        }
+
+        protected override ECPoint Detach()
+        {
+            return new SecP192R1Point(null, AffineXCoord, AffineYCoord);
+        }
+
+        public override ECPoint Add(ECPoint b)
+        {
+            if (this.IsInfinity)
+                return b;
+            if (b.IsInfinity)
+                return this;
+            if (this == b)
+                return Twice();
+
+            ECCurve curve = this.Curve;
+
+            SecP192R1FieldElement X1 = (SecP192R1FieldElement)this.RawXCoord, Y1 = (SecP192R1FieldElement)this.RawYCoord;
+            SecP192R1FieldElement X2 = (SecP192R1FieldElement)b.RawXCoord, Y2 = (SecP192R1FieldElement)b.RawYCoord;
+
+            SecP192R1FieldElement Z1 = (SecP192R1FieldElement)this.RawZCoords[0];
+            SecP192R1FieldElement Z2 = (SecP192R1FieldElement)b.RawZCoords[0];
+
+            uint c;
+            uint[] tt1 = Nat192.CreateExt();
+            uint[] t2 = Nat192.Create();
+            uint[] t3 = Nat192.Create();
+            uint[] t4 = Nat192.Create();
+
+            bool Z1IsOne = Z1.IsOne;
+            uint[] U2, S2;
+            if (Z1IsOne)
+            {
+                U2 = X2.x;
+                S2 = Y2.x;
+            }
+            else
+            {
+                S2 = t3;
+                SecP192R1Field.Square(Z1.x, S2);
+
+                U2 = t2;
+                SecP192R1Field.Multiply(S2, X2.x, U2);
+
+                SecP192R1Field.Multiply(S2, Z1.x, S2);
+                SecP192R1Field.Multiply(S2, Y2.x, S2);
+            }
+
+            bool Z2IsOne = Z2.IsOne;
+            uint[] U1, S1;
+            if (Z2IsOne)
+            {
+                U1 = X1.x;
+                S1 = Y1.x;
+            }
+            else
+            {
+                S1 = t4;
+                SecP192R1Field.Square(Z2.x, S1);
+
+                U1 = tt1;
+                SecP192R1Field.Multiply(S1, X1.x, U1);
+
+                SecP192R1Field.Multiply(S1, Z2.x, S1);
+                SecP192R1Field.Multiply(S1, Y1.x, S1);
+            }
+
+            uint[] H = Nat192.Create();
+            SecP192R1Field.Subtract(U1, U2, H);
+
+            uint[] R = t2;
+            SecP192R1Field.Subtract(S1, S2, R);
+
+            // Check if b == this or b == -this
+            if (Nat192.IsZero(H))
+            {
+                if (Nat192.IsZero(R))
+                {
+                    // this == b, i.e. this must be doubled
+                    return this.Twice();
+                }
+
+                // this == -b, i.e. the result is the point at infinity
+                return curve.Infinity;
+            }
+
+            uint[] HSquared = t3;
+            SecP192R1Field.Square(H, HSquared);
+
+            uint[] G = Nat192.Create();
+            SecP192R1Field.Multiply(HSquared, H, G);
+
+            uint[] V = t3;
+            SecP192R1Field.Multiply(HSquared, U1, V);
+
+            SecP192R1Field.Negate(G, G);
+            Nat192.Mul(S1, G, tt1);
+
+            c = Nat192.AddBothTo(V, V, G);
+            SecP192R1Field.Reduce32(c, G);
+
+            SecP192R1FieldElement X3 = new SecP192R1FieldElement(t4);
+            SecP192R1Field.Square(R, X3.x);
+            SecP192R1Field.Subtract(X3.x, G, X3.x);
+
+            SecP192R1FieldElement Y3 = new SecP192R1FieldElement(G);
+            SecP192R1Field.Subtract(V, X3.x, Y3.x);
+            SecP192R1Field.MultiplyAddToExt(Y3.x, R, tt1);
+            SecP192R1Field.Reduce(tt1, Y3.x);
+
+            SecP192R1FieldElement Z3 = new SecP192R1FieldElement(H);
+            if (!Z1IsOne)
+            {
+                SecP192R1Field.Multiply(Z3.x, Z1.x, Z3.x);
+            }
+            if (!Z2IsOne)
+            {
+                SecP192R1Field.Multiply(Z3.x, Z2.x, Z3.x);
+            }
+
+            ECFieldElement[] zs = new ECFieldElement[] { Z3 };
+
+            return new SecP192R1Point(curve, X3, Y3, zs);
+        }
+
+        public override ECPoint Twice()
+        {
+            if (this.IsInfinity)
+                return this;
+
+            ECCurve curve = this.Curve;
+
+            SecP192R1FieldElement Y1 = (SecP192R1FieldElement)this.RawYCoord;
+            if (Y1.IsZero)
+                return curve.Infinity;
+
+            SecP192R1FieldElement X1 = (SecP192R1FieldElement)this.RawXCoord, Z1 = (SecP192R1FieldElement)this.RawZCoords[0];
+
+            uint c;
+            uint[] t1 = Nat192.Create();
+            uint[] t2 = Nat192.Create();
+
+            uint[] Y1Squared = Nat192.Create();
+            SecP192R1Field.Square(Y1.x, Y1Squared);
+
+            uint[] T = Nat192.Create();
+            SecP192R1Field.Square(Y1Squared, T);
+
+            bool Z1IsOne = Z1.IsOne;
+
+            uint[] Z1Squared = Z1.x;
+            if (!Z1IsOne)
+            {
+                Z1Squared = t2;
+                SecP192R1Field.Square(Z1.x, Z1Squared);
+            }
+
+            SecP192R1Field.Subtract(X1.x, Z1Squared, t1);
+
+            uint[] M = t2;
+            SecP192R1Field.Add(X1.x, Z1Squared, M);
+            SecP192R1Field.Multiply(M, t1, M);
+            c = Nat192.AddBothTo(M, M, M);
+            SecP192R1Field.Reduce32(c, M);
+
+            uint[] S = Y1Squared;
+            SecP192R1Field.Multiply(Y1Squared, X1.x, S);
+            c = Nat.ShiftUpBits(6, S, 2, 0);
+            SecP192R1Field.Reduce32(c, S);
+
+            c = Nat.ShiftUpBits(6, T, 3, 0, t1);
+            SecP192R1Field.Reduce32(c, t1);
+
+            SecP192R1FieldElement X3 = new SecP192R1FieldElement(T);
+            SecP192R1Field.Square(M, X3.x);
+            SecP192R1Field.Subtract(X3.x, S, X3.x);
+            SecP192R1Field.Subtract(X3.x, S, X3.x);
+
+            SecP192R1FieldElement Y3 = new SecP192R1FieldElement(S);
+            SecP192R1Field.Subtract(S, X3.x, Y3.x);
+            SecP192R1Field.Multiply(Y3.x, M, Y3.x);
+            SecP192R1Field.Subtract(Y3.x, t1, Y3.x);
+
+            SecP192R1FieldElement Z3 = new SecP192R1FieldElement(M);
+            SecP192R1Field.Twice(Y1.x, Z3.x);
+            if (!Z1IsOne)
+            {
+                SecP192R1Field.Multiply(Z3.x, Z1.x, Z3.x);
+            }
+
+            return new SecP192R1Point(curve, X3, Y3, new ECFieldElement[] { Z3 });
+        }
+
+        public override ECPoint TwicePlus(ECPoint b)
+        {
+            if (this == b)
+                return ThreeTimes();
+            if (this.IsInfinity)
+                return b;
+            if (b.IsInfinity)
+                return Twice();
+
+            ECFieldElement Y1 = this.RawYCoord;
+            if (Y1.IsZero)
+                return b;
+
+            return Twice().Add(b);
+        }
+
+        public override ECPoint ThreeTimes()
+        {
+            if (this.IsInfinity || this.RawYCoord.IsZero)
+                return this;
+
+            // NOTE: Be careful about recursions between TwicePlus and ThreeTimes
+            return Twice().Add(this);
+        }
+
+        public override ECPoint Negate()
+        {
+            if (IsInfinity)
+                return this;
+
+            return new SecP192R1Point(Curve, RawXCoord, RawYCoord.Negate(), RawZCoords);
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP192R1Point.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: a71d16df6540b974fb6fb1f2749ca234
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP224K1Curve.cs

@@ -0,0 +1,172 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities.Encoders;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP224K1Curve
+        : AbstractFpCurve
+    {
+        public static readonly BigInteger q = SecP224K1FieldElement.Q;
+
+        private const int SECP224K1_DEFAULT_COORDS = COORD_JACOBIAN;
+        private const int SECP224K1_FE_INTS = 7;
+        private static readonly ECFieldElement[] SECP224K1_AFFINE_ZS = new ECFieldElement[] { new SecP224K1FieldElement(BigInteger.One) };
+
+        protected readonly SecP224K1Point m_infinity;
+
+        public SecP224K1Curve()
+            : base(q)
+        {
+            this.m_infinity = new SecP224K1Point(this, null, null);
+
+            this.m_a = FromBigInteger(BigInteger.Zero);
+            this.m_b = FromBigInteger(BigInteger.ValueOf(5));
+            this.m_order = new BigInteger(1, Hex.DecodeStrict("010000000000000000000000000001DCE8D2EC6184CAF0A971769FB1F7"));
+            this.m_cofactor = BigInteger.One;
+            this.m_coord = SECP224K1_DEFAULT_COORDS;
+        }
+
+        protected override ECCurve CloneCurve()
+        {
+            return new SecP224K1Curve();
+        }
+
+        public override bool SupportsCoordinateSystem(int coord)
+        {
+            switch (coord)
+            {
+                case COORD_JACOBIAN:
+                    return true;
+                default:
+                    return false;
+            }
+        }
+
+        public virtual BigInteger Q
+        {
+            get { return q; }
+        }
+
+        public override ECPoint Infinity
+        {
+            get { return m_infinity; }
+        }
+
+        public override int FieldSize
+        {
+            get { return q.BitLength; }
+        }
+
+        public override ECFieldElement FromBigInteger(BigInteger x)
+        {
+            return new SecP224K1FieldElement(x);
+        }
+
+        protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y)
+        {
+            return new SecP224K1Point(this, x, y);
+        }
+
+        protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)
+        {
+            return new SecP224K1Point(this, x, y, zs);
+        }
+
+        public override ECLookupTable CreateCacheSafeLookupTable(ECPoint[] points, int off, int len)
+        {
+            uint[] table = new uint[len * SECP224K1_FE_INTS * 2];
+            {
+                int pos = 0;
+                for (int i = 0; i < len; ++i)
+                {
+                    ECPoint p = points[off + i];
+                    Nat224.Copy(((SecP224K1FieldElement)p.RawXCoord).x, 0, table, pos); pos += SECP224K1_FE_INTS;
+                    Nat224.Copy(((SecP224K1FieldElement)p.RawYCoord).x, 0, table, pos); pos += SECP224K1_FE_INTS;
+                }
+            }
+
+            return new SecP224K1LookupTable(this, table, len);
+        }
+
+        public override ECFieldElement RandomFieldElement(SecureRandom r)
+        {
+            uint[] x = Nat224.Create();
+            SecP224K1Field.Random(r, x);
+            return new SecP224K1FieldElement(x);
+        }
+
+        public override ECFieldElement RandomFieldElementMult(SecureRandom r)
+        {
+            uint[] x = Nat224.Create();
+            SecP224K1Field.RandomMult(r, x);
+            return new SecP224K1FieldElement(x);
+        }
+
+        private class SecP224K1LookupTable
+            : AbstractECLookupTable
+        {
+            private readonly SecP224K1Curve m_outer;
+            private readonly uint[] m_table;
+            private readonly int m_size;
+
+            internal SecP224K1LookupTable(SecP224K1Curve outer, uint[] table, int size)
+            {
+                this.m_outer = outer;
+                this.m_table = table;
+                this.m_size = size;
+            }
+
+            public override int Size
+            {
+                get { return m_size; }
+            }
+
+            public override ECPoint Lookup(int index)
+            {
+                uint[] x = Nat224.Create(), y = Nat224.Create();
+                int pos = 0;
+
+                for (int i = 0; i < m_size; ++i)
+                {
+                    uint MASK = (uint)(((i ^ index) - 1) >> 31);
+
+                    for (int j = 0; j < SECP224K1_FE_INTS; ++j)
+                    {
+                        x[j] ^= m_table[pos + j] & MASK;
+                        y[j] ^= m_table[pos + SECP224K1_FE_INTS + j] & MASK;
+                    }
+
+                    pos += (SECP224K1_FE_INTS * 2);
+                }
+
+                return CreatePoint(x, y);
+            }
+
+            public override ECPoint LookupVar(int index)
+            {
+                uint[] x = Nat224.Create(), y = Nat224.Create();
+                int pos = index * SECP224K1_FE_INTS * 2;
+
+                for (int j = 0; j < SECP224K1_FE_INTS; ++j)
+                {
+                    x[j] = m_table[pos + j];
+                    y[j] = m_table[pos + SECP224K1_FE_INTS + j];
+                }
+
+                return CreatePoint(x, y);
+            }
+
+            private ECPoint CreatePoint(uint[] x, uint[] y)
+            {
+                return m_outer.CreateRawPoint(new SecP224K1FieldElement(x), new SecP224K1FieldElement(y), SECP224K1_AFFINE_ZS);
+            }
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP224K1Curve.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 8a7cf766b4ace8a4fb7fd49941cc6656
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP224K1Field.cs

@@ -0,0 +1,222 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+using System.Diagnostics;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto.Utilities;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP224K1Field
+    {
+        // 2^224 - 2^32 - 2^12 - 2^11 - 2^9 - 2^7 - 2^4 - 2 - 1
+        internal static readonly uint[] P = new uint[]{ 0xFFFFE56D, 0xFFFFFFFE, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
+            0xFFFFFFFF, 0xFFFFFFFF };
+        private static readonly uint[] PExt = new uint[]{ 0x02C23069, 0x00003526, 0x00000001, 0x00000000, 0x00000000,
+            0x00000000, 0x00000000, 0xFFFFCADA, 0xFFFFFFFD, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF
+        };
+        private static readonly uint[] PExtInv = new uint[]{ 0xFD3DCF97, 0xFFFFCAD9, 0xFFFFFFFE, 0xFFFFFFFF,
+            0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x00003525, 0x00000002 };
+        private const uint P6 = 0xFFFFFFFF;
+        private const uint PExt13 = 0xFFFFFFFF;
+        private const uint PInv33 = 0x1A93;
+
+        public static void Add(uint[] x, uint[] y, uint[] z)
+        {
+            uint c = Nat224.Add(x, y, z);
+            if (c != 0 || (z[6] == P6 && Nat224.Gte(z, P)))
+            {
+                Nat.Add33To(7, PInv33, z);
+            }
+        }
+
+        public static void AddExt(uint[] xx, uint[] yy, uint[] zz)
+        {
+            uint c = Nat.Add(14, xx, yy, zz);
+            if (c != 0 || (zz[13] == PExt13 && Nat.Gte(14, zz, PExt)))
+            {
+                if (Nat.AddTo(PExtInv.Length, PExtInv, zz) != 0)
+                {
+                    Nat.IncAt(14, zz, PExtInv.Length);
+                }
+            }
+        }
+
+        public static void AddOne(uint[] x, uint[] z)
+        {
+            uint c = Nat.Inc(7, x, z);
+            if (c != 0 || (z[6] == P6 && Nat224.Gte(z, P)))
+            {
+                Nat.Add33To(7, PInv33, z);
+            }
+        }
+
+        public static uint[] FromBigInteger(BigInteger x)
+        {
+            uint[] z = Nat.FromBigInteger(224, x);
+            if (z[6] == P6 && Nat224.Gte(z, P))
+            {
+                Nat224.SubFrom(P, z);
+            }
+            return z;
+        }
+
+        public static void Half(uint[] x, uint[] z)
+        {
+            if ((x[0] & 1) == 0)
+            {
+                Nat.ShiftDownBit(7, x, 0, z);
+            }
+            else
+            {
+                uint c = Nat224.Add(x, P, z);
+                Nat.ShiftDownBit(7, z, c);
+            }
+        }
+
+        public static void Inv(uint[] x, uint[] z)
+        {
+            Mod.CheckedModOddInverse(P, x, z);
+        }
+
+        public static int IsZero(uint[] x)
+        {
+            uint d = 0;
+            for (int i = 0; i < 7; ++i)
+            {
+                d |= x[i];
+            }
+            d = (d >> 1) | (d & 1);
+            return ((int)d - 1) >> 31;
+        }
+
+        public static void Multiply(uint[] x, uint[] y, uint[] z)
+        {
+            uint[] tt = Nat224.CreateExt();
+            Nat224.Mul(x, y, tt);
+            Reduce(tt, z);
+        }
+
+        public static void MultiplyAddToExt(uint[] x, uint[] y, uint[] zz)
+        {
+            uint c = Nat224.MulAddTo(x, y, zz);
+            if (c != 0 || (zz[13] == PExt13 && Nat.Gte(14, zz, PExt)))
+            {
+                if (Nat.AddTo(PExtInv.Length, PExtInv, zz) != 0)
+                {
+                    Nat.IncAt(14, zz, PExtInv.Length);
+                }
+            }
+        }
+
+        public static void Negate(uint[] x, uint[] z)
+        {
+            if (0 != IsZero(x))
+            {
+                Nat224.Sub(P, P, z);
+            }
+            else
+            {
+                Nat224.Sub(P, x, z);
+            }
+        }
+
+        public static void Random(SecureRandom r, uint[] z)
+        {
+            byte[] bb = new byte[7 * 4];
+            do
+            {
+                r.NextBytes(bb);
+                Pack.LE_To_UInt32(bb, 0, z, 0, 7);
+            }
+            while (0 == Nat.LessThan(7, z, P));
+        }
+
+        public static void RandomMult(SecureRandom r, uint[] z)
+        {
+            do
+            {
+                Random(r, z);
+            }
+            while (0 != IsZero(z));
+        }
+
+        public static void Reduce(uint[] xx, uint[] z)
+        {
+            ulong cc = Nat224.Mul33Add(PInv33, xx, 7, xx, 0, z, 0);
+            uint c = Nat224.Mul33DWordAdd(PInv33, cc, z, 0);
+
+            Debug.Assert(c == 0 || c == 1);
+
+            if (c != 0 || (z[6] == P6 && Nat224.Gte(z, P)))
+            {
+                Nat.Add33To(7, PInv33, z);
+            }
+        }
+
+        public static void Reduce32(uint x, uint[] z)
+        {
+            if ((x != 0 && Nat224.Mul33WordAdd(PInv33, x, z, 0) != 0)
+                || (z[6] == P6 && Nat224.Gte(z, P)))
+            {
+                Nat.Add33To(7, PInv33, z);
+            }
+        }
+
+        public static void Square(uint[] x, uint[] z)
+        {
+            uint[] tt = Nat224.CreateExt();
+            Nat224.Square(x, tt);
+            Reduce(tt, z);
+        }
+
+        public static void SquareN(uint[] x, int n, uint[] z)
+        {
+            Debug.Assert(n > 0);
+
+            uint[] tt = Nat224.CreateExt();
+            Nat224.Square(x, tt);
+            Reduce(tt, z);
+
+            while (--n > 0)
+            {
+                Nat224.Square(z, tt);
+                Reduce(tt, z);
+            }
+        }
+
+        public static void Subtract(uint[] x, uint[] y, uint[] z)
+        {
+            int c = Nat224.Sub(x, y, z);
+            if (c != 0)
+            {
+                Nat.Sub33From(7, PInv33, z);
+            }
+        }
+
+        public static void SubtractExt(uint[] xx, uint[] yy, uint[] zz)
+        {
+            int c = Nat.Sub(14, xx, yy, zz);
+            if (c != 0)
+            {
+                if (Nat.SubFrom(PExtInv.Length, PExtInv, zz) != 0)
+                {
+                    Nat.DecAt(14, zz, PExtInv.Length);
+                }
+            }
+        }
+
+        public static void Twice(uint[] x, uint[] z)
+        {
+            uint c = Nat.ShiftUpBit(7, x, 0, z);
+            if (c != 0 || (z[6] == P6 && Nat224.Gte(z, P)))
+            {
+                Nat.Add33To(7, PInv33, z);
+            }
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP224K1Field.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 815a691732590d84388ed5639f9ed39e
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP224K1FieldElement.cs

@@ -0,0 +1,247 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+using System.Diagnostics;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities.Encoders;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP224K1FieldElement
+        : AbstractFpFieldElement
+    {
+        public static readonly BigInteger Q = new BigInteger(1,
+            Hex.DecodeStrict("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFE56D"));
+
+        // Calculated as BigInteger.Two.ModPow(Q.ShiftRight(2), Q)
+        private static readonly uint[] PRECOMP_POW2 = new uint[]{ 0x33bfd202, 0xdcfad133, 0x2287624a, 0xc3811ba8,
+            0xa85558fc, 0x1eaef5d7, 0x8edf154c };
+
+        protected internal readonly uint[] x;
+
+        public SecP224K1FieldElement(BigInteger x)
+        {
+            if (x == null || x.SignValue < 0 || x.CompareTo(Q) >= 0)
+                throw new ArgumentException("value invalid for SecP224K1FieldElement", "x");
+
+            this.x = SecP224K1Field.FromBigInteger(x);
+        }
+
+        public SecP224K1FieldElement()
+        {
+            this.x = Nat224.Create();
+        }
+
+        protected internal SecP224K1FieldElement(uint[] x)
+        {
+            this.x = x;
+        }
+
+        public override bool IsZero
+        {
+            get { return Nat224.IsZero(x); }
+        }
+
+        public override bool IsOne
+        {
+            get { return Nat224.IsOne(x); }
+        }
+
+        public override bool TestBitZero()
+        {
+            return Nat224.GetBit(x, 0) == 1;
+        }
+
+        public override BigInteger ToBigInteger()
+        {
+            return Nat224.ToBigInteger(x);
+        }
+
+        public override string FieldName
+        {
+            get { return "SecP224K1Field"; }
+        }
+
+        public override int FieldSize
+        {
+            get { return Q.BitLength; }
+        }
+
+        public override ECFieldElement Add(ECFieldElement b)
+        {
+            uint[] z = Nat224.Create();
+            SecP224K1Field.Add(x, ((SecP224K1FieldElement)b).x, z);
+            return new SecP224K1FieldElement(z);
+        }
+
+        public override ECFieldElement AddOne()
+        {
+            uint[] z = Nat224.Create();
+            SecP224K1Field.AddOne(x, z);
+            return new SecP224K1FieldElement(z);
+        }
+
+        public override ECFieldElement Subtract(ECFieldElement b)
+        {
+            uint[] z = Nat224.Create();
+            SecP224K1Field.Subtract(x, ((SecP224K1FieldElement)b).x, z);
+            return new SecP224K1FieldElement(z);
+        }
+
+        public override ECFieldElement Multiply(ECFieldElement b)
+        {
+            uint[] z = Nat224.Create();
+            SecP224K1Field.Multiply(x, ((SecP224K1FieldElement)b).x, z);
+            return new SecP224K1FieldElement(z);
+        }
+
+        public override ECFieldElement Divide(ECFieldElement b)
+        {
+            //return Multiply(b.Invert());
+            uint[] z = Nat224.Create();
+            SecP224K1Field.Inv(((SecP224K1FieldElement)b).x, z);
+            SecP224K1Field.Multiply(z, x, z);
+            return new SecP224K1FieldElement(z);
+        }
+
+        public override ECFieldElement Negate()
+        {
+            uint[] z = Nat224.Create();
+            SecP224K1Field.Negate(x, z);
+            return new SecP224K1FieldElement(z);
+        }
+
+        public override ECFieldElement Square()
+        {
+            uint[] z = Nat224.Create();
+            SecP224K1Field.Square(x, z);
+            return new SecP224K1FieldElement(z);
+        }
+
+        public override ECFieldElement Invert()
+        {
+            uint[] z = Nat224.Create();
+            SecP224K1Field.Inv(x, z);
+            return new SecP224K1FieldElement(z);
+        }
+
+        /**
+         * return a sqrt root - the routine verifies that the calculation returns the right value - if
+         * none exists it returns null.
+         */
+        public override ECFieldElement Sqrt()
+        {
+            /*
+             * Q == 8m + 5, so we use Pocklington's method for this case.
+             *
+             * First, raise this element to the exponent 2^221 - 2^29 - 2^9 - 2^8 - 2^6 - 2^4 - 2^1 (i.e. m + 1)
+             * 
+             * Breaking up the exponent's binary representation into "repunits", we get:
+             * { 191 1s } { 1 0s } { 19 1s } { 2 0s } { 1 1s } { 1 0s } { 1 1s } { 1 0s } { 3 1s } { 1 0s }
+             * 
+             * Therefore we need an addition chain containing 1, 3, 19, 191 (the lengths of the repunits)
+             * We use: [1], 2, [3], 4, 8, 11, [19], 23, 42, 84, 107, [191]
+             */
+
+            uint[] x1 = this.x;
+            if (Nat224.IsZero(x1) || Nat224.IsOne(x1))
+                return this;
+
+            uint[] x2 = Nat224.Create();
+            SecP224K1Field.Square(x1, x2);
+            SecP224K1Field.Multiply(x2, x1, x2);
+            uint[] x3 = x2;
+            SecP224K1Field.Square(x2, x3);
+            SecP224K1Field.Multiply(x3, x1, x3);
+            uint[] x4 = Nat224.Create();
+            SecP224K1Field.Square(x3, x4);
+            SecP224K1Field.Multiply(x4, x1, x4);
+            uint[] x8 = Nat224.Create();
+            SecP224K1Field.SquareN(x4, 4, x8);
+            SecP224K1Field.Multiply(x8, x4, x8);
+            uint[] x11 = Nat224.Create();
+            SecP224K1Field.SquareN(x8, 3, x11);
+            SecP224K1Field.Multiply(x11, x3, x11);
+            uint[] x19 = x11;
+            SecP224K1Field.SquareN(x11, 8, x19);
+            SecP224K1Field.Multiply(x19, x8, x19);
+            uint[] x23 = x8;
+            SecP224K1Field.SquareN(x19, 4, x23);
+            SecP224K1Field.Multiply(x23, x4, x23);
+            uint[] x42 = x4;
+            SecP224K1Field.SquareN(x23, 19, x42);
+            SecP224K1Field.Multiply(x42, x19, x42);
+            uint[] x84 = Nat224.Create();
+            SecP224K1Field.SquareN(x42, 42, x84);
+            SecP224K1Field.Multiply(x84, x42, x84);
+            uint[] x107 = x42;
+            SecP224K1Field.SquareN(x84, 23, x107);
+            SecP224K1Field.Multiply(x107, x23, x107);
+            uint[] x191 = x23;
+            SecP224K1Field.SquareN(x107, 84, x191);
+            SecP224K1Field.Multiply(x191, x84, x191);
+
+            uint[] t1 = x191;
+            SecP224K1Field.SquareN(t1, 20, t1);
+            SecP224K1Field.Multiply(t1, x19, t1);
+            SecP224K1Field.SquareN(t1, 3, t1);
+            SecP224K1Field.Multiply(t1, x1, t1);
+            SecP224K1Field.SquareN(t1, 2, t1);
+            SecP224K1Field.Multiply(t1, x1, t1);
+            SecP224K1Field.SquareN(t1, 4, t1);
+            SecP224K1Field.Multiply(t1, x3, t1);
+            SecP224K1Field.Square(t1, t1);
+
+            uint[] t2 = x84;
+            SecP224K1Field.Square(t1, t2);
+
+            if (Nat224.Eq(x1, t2))
+            {
+                return new SecP224K1FieldElement(t1);
+            }
+
+            /*
+             * If the first guess is incorrect, we multiply by a precomputed power of 2 to get the second guess,
+             * which is ((4x)^(m + 1))/2 mod Q
+             */
+            SecP224K1Field.Multiply(t1, PRECOMP_POW2, t1);
+
+            SecP224K1Field.Square(t1, t2);
+
+            if (Nat224.Eq(x1, t2))
+            {
+                return new SecP224K1FieldElement(t1);
+            }
+
+            return null;
+        }
+
+        public override bool Equals(object obj)
+        {
+            return Equals(obj as SecP224K1FieldElement);
+        }
+
+        public override bool Equals(ECFieldElement other)
+        {
+            return Equals(other as SecP224K1FieldElement);
+        }
+
+        public virtual bool Equals(SecP224K1FieldElement other)
+        {
+            if (this == other)
+                return true;
+            if (null == other)
+                return false;
+            return Nat224.Eq(x, other.x);
+        }
+
+        public override int GetHashCode()
+        {
+            return Q.GetHashCode() ^ Arrays.GetHashCode(x, 0, 7);
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP224K1FieldElement.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: eb18e886f88cd2d40ad8a95b171b1a7f
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP224K1Point.cs

@@ -0,0 +1,236 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP224K1Point
+        : AbstractFpPoint
+    {
+        internal SecP224K1Point(ECCurve curve, ECFieldElement x, ECFieldElement y)
+            : base(curve, x, y)
+        {
+        }
+
+        internal SecP224K1Point(ECCurve curve, ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)
+            : base(curve, x, y, zs)
+        {
+        }
+
+        protected override ECPoint Detach()
+        {
+            return new SecP224K1Point(null, AffineXCoord, AffineYCoord);
+        }
+
+        public override ECPoint Add(ECPoint b)
+        {
+            if (this.IsInfinity)
+                return b;
+            if (b.IsInfinity)
+                return this;
+            if (this == b)
+                return Twice();
+
+            ECCurve curve = this.Curve;
+
+            SecP224K1FieldElement X1 = (SecP224K1FieldElement)this.RawXCoord, Y1 = (SecP224K1FieldElement)this.RawYCoord;
+            SecP224K1FieldElement X2 = (SecP224K1FieldElement)b.RawXCoord, Y2 = (SecP224K1FieldElement)b.RawYCoord;
+
+            SecP224K1FieldElement Z1 = (SecP224K1FieldElement)this.RawZCoords[0];
+            SecP224K1FieldElement Z2 = (SecP224K1FieldElement)b.RawZCoords[0];
+
+            uint c;
+            uint[] tt1 = Nat224.CreateExt();
+            uint[] t2 = Nat224.Create();
+            uint[] t3 = Nat224.Create();
+            uint[] t4 = Nat224.Create();
+
+            bool Z1IsOne = Z1.IsOne;
+            uint[] U2, S2;
+            if (Z1IsOne)
+            {
+                U2 = X2.x;
+                S2 = Y2.x;
+            }
+            else
+            {
+                S2 = t3;
+                SecP224K1Field.Square(Z1.x, S2);
+
+                U2 = t2;
+                SecP224K1Field.Multiply(S2, X2.x, U2);
+
+                SecP224K1Field.Multiply(S2, Z1.x, S2);
+                SecP224K1Field.Multiply(S2, Y2.x, S2);
+            }
+
+            bool Z2IsOne = Z2.IsOne;
+            uint[] U1, S1;
+            if (Z2IsOne)
+            {
+                U1 = X1.x;
+                S1 = Y1.x;
+            }
+            else
+            {
+                S1 = t4;
+                SecP224K1Field.Square(Z2.x, S1);
+
+                U1 = tt1;
+                SecP224K1Field.Multiply(S1, X1.x, U1);
+
+                SecP224K1Field.Multiply(S1, Z2.x, S1);
+                SecP224K1Field.Multiply(S1, Y1.x, S1);
+            }
+
+            uint[] H = Nat224.Create();
+            SecP224K1Field.Subtract(U1, U2, H);
+
+            uint[] R = t2;
+            SecP224K1Field.Subtract(S1, S2, R);
+
+            // Check if b == this or b == -this
+            if (Nat224.IsZero(H))
+            {
+                if (Nat224.IsZero(R))
+                {
+                    // this == b, i.e. this must be doubled
+                    return this.Twice();
+                }
+
+                // this == -b, i.e. the result is the point at infinity
+                return curve.Infinity;
+            }
+
+            uint[] HSquared = t3;
+            SecP224K1Field.Square(H, HSquared);
+
+            uint[] G = Nat224.Create();
+            SecP224K1Field.Multiply(HSquared, H, G);
+
+            uint[] V = t3;
+            SecP224K1Field.Multiply(HSquared, U1, V);
+
+            SecP224K1Field.Negate(G, G);
+            Nat224.Mul(S1, G, tt1);
+
+            c = Nat224.AddBothTo(V, V, G);
+            SecP224K1Field.Reduce32(c, G);
+
+            SecP224K1FieldElement X3 = new SecP224K1FieldElement(t4);
+            SecP224K1Field.Square(R, X3.x);
+            SecP224K1Field.Subtract(X3.x, G, X3.x);
+
+            SecP224K1FieldElement Y3 = new SecP224K1FieldElement(G);
+            SecP224K1Field.Subtract(V, X3.x, Y3.x);
+            SecP224K1Field.MultiplyAddToExt(Y3.x, R, tt1);
+            SecP224K1Field.Reduce(tt1, Y3.x);
+
+            SecP224K1FieldElement Z3 = new SecP224K1FieldElement(H);
+            if (!Z1IsOne)
+            {
+                SecP224K1Field.Multiply(Z3.x, Z1.x, Z3.x);
+            }
+            if (!Z2IsOne)
+            {
+                SecP224K1Field.Multiply(Z3.x, Z2.x, Z3.x);
+            }
+
+            ECFieldElement[] zs = new ECFieldElement[] { Z3 };
+
+            return new SecP224K1Point(curve, X3, Y3, zs);
+        }
+
+        public override ECPoint Twice()
+        {
+            if (this.IsInfinity)
+                return this;
+
+            ECCurve curve = this.Curve;
+
+            SecP224K1FieldElement Y1 = (SecP224K1FieldElement)this.RawYCoord;
+            if (Y1.IsZero)
+                return curve.Infinity;
+
+            SecP224K1FieldElement X1 = (SecP224K1FieldElement)this.RawXCoord, Z1 = (SecP224K1FieldElement)this.RawZCoords[0];
+
+            uint c;
+
+            uint[] Y1Squared = Nat224.Create();
+            SecP224K1Field.Square(Y1.x, Y1Squared);
+
+            uint[] T = Nat224.Create();
+            SecP224K1Field.Square(Y1Squared, T);
+
+            uint[] M = Nat224.Create();
+            SecP224K1Field.Square(X1.x, M);
+            c = Nat224.AddBothTo(M, M, M);
+            SecP224K1Field.Reduce32(c, M);
+
+            uint[] S = Y1Squared;
+            SecP224K1Field.Multiply(Y1Squared, X1.x, S);
+            c = Nat.ShiftUpBits(7, S, 2, 0);
+            SecP224K1Field.Reduce32(c, S);
+
+            uint[] t1 = Nat224.Create();
+            c = Nat.ShiftUpBits(7, T, 3, 0, t1);
+            SecP224K1Field.Reduce32(c, t1);
+
+            SecP224K1FieldElement X3 = new SecP224K1FieldElement(T);
+            SecP224K1Field.Square(M, X3.x);
+            SecP224K1Field.Subtract(X3.x, S, X3.x);
+            SecP224K1Field.Subtract(X3.x, S, X3.x);
+
+            SecP224K1FieldElement Y3 = new SecP224K1FieldElement(S);
+            SecP224K1Field.Subtract(S, X3.x, Y3.x);
+            SecP224K1Field.Multiply(Y3.x, M, Y3.x);
+            SecP224K1Field.Subtract(Y3.x, t1, Y3.x);
+
+            SecP224K1FieldElement Z3 = new SecP224K1FieldElement(M);
+            SecP224K1Field.Twice(Y1.x, Z3.x);
+            if (!Z1.IsOne)
+            {
+                SecP224K1Field.Multiply(Z3.x, Z1.x, Z3.x);
+            }
+
+            return new SecP224K1Point(curve, X3, Y3, new ECFieldElement[] { Z3 });
+        }
+
+        public override ECPoint TwicePlus(ECPoint b)
+        {
+            if (this == b)
+                return ThreeTimes();
+            if (this.IsInfinity)
+                return b;
+            if (b.IsInfinity)
+                return Twice();
+
+            ECFieldElement Y1 = this.RawYCoord;
+            if (Y1.IsZero)
+                return b;
+
+            return Twice().Add(b);
+        }
+
+        public override ECPoint ThreeTimes()
+        {
+            if (this.IsInfinity || this.RawYCoord.IsZero)
+                return this;
+
+            // NOTE: Be careful about recursions between TwicePlus and ThreeTimes
+            return Twice().Add(this);
+        }
+
+        public override ECPoint Negate()
+        {
+            if (IsInfinity)
+                return this;
+
+            return new SecP224K1Point(Curve, RawXCoord, RawYCoord.Negate(), RawZCoords);
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP224K1Point.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: da88518e11481b447952b1724b7b3aa8
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP224R1Curve.cs

@@ -0,0 +1,175 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities.Encoders;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP224R1Curve
+        : AbstractFpCurve
+    {
+        public static readonly BigInteger q = SecP224R1FieldElement.Q;
+
+        private const int SECP224R1_DEFAULT_COORDS = COORD_JACOBIAN;
+        private const int SECP224R1_FE_INTS = 7;
+        private static readonly ECFieldElement[] SECP224R1_AFFINE_ZS = new ECFieldElement[] { new SecP224R1FieldElement(BigInteger.One) };
+
+        protected readonly SecP224R1Point m_infinity;
+
+        public SecP224R1Curve()
+            : base(q)
+        {
+            this.m_infinity = new SecP224R1Point(this, null, null);
+
+            this.m_a = FromBigInteger(new BigInteger(1,
+                Hex.DecodeStrict("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFE")));
+            this.m_b = FromBigInteger(new BigInteger(1,
+                Hex.DecodeStrict("B4050A850C04B3ABF54132565044B0B7D7BFD8BA270B39432355FFB4")));
+            this.m_order = new BigInteger(1, Hex.DecodeStrict("FFFFFFFFFFFFFFFFFFFFFFFFFFFF16A2E0B8F03E13DD29455C5C2A3D"));
+            this.m_cofactor = BigInteger.One;
+
+            this.m_coord = SECP224R1_DEFAULT_COORDS;
+        }
+
+        protected override ECCurve CloneCurve()
+        {
+            return new SecP224R1Curve();
+        }
+
+        public override bool SupportsCoordinateSystem(int coord)
+        {
+            switch (coord)
+            {
+                case COORD_JACOBIAN:
+                    return true;
+                default:
+                    return false;
+            }
+        }
+
+        public virtual BigInteger Q
+        {
+            get { return q; }
+        }
+
+        public override ECPoint Infinity
+        {
+            get { return m_infinity; }
+        }
+
+        public override int FieldSize
+        {
+            get { return q.BitLength; }
+        }
+
+        public override ECFieldElement FromBigInteger(BigInteger x)
+        {
+            return new SecP224R1FieldElement(x);
+        }
+
+        protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y)
+        {
+            return new SecP224R1Point(this, x, y);
+        }
+
+        protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)
+        {
+            return new SecP224R1Point(this, x, y, zs);
+        }
+
+        public override ECLookupTable CreateCacheSafeLookupTable(ECPoint[] points, int off, int len)
+        {
+            uint[] table = new uint[len * SECP224R1_FE_INTS * 2];
+            {
+                int pos = 0;
+                for (int i = 0; i < len; ++i)
+                {
+                    ECPoint p = points[off + i];
+                    Nat224.Copy(((SecP224R1FieldElement)p.RawXCoord).x, 0, table, pos); pos += SECP224R1_FE_INTS;
+                    Nat224.Copy(((SecP224R1FieldElement)p.RawYCoord).x, 0, table, pos); pos += SECP224R1_FE_INTS;
+                }
+            }
+
+            return new SecP224R1LookupTable(this, table, len);
+        }
+
+        public override ECFieldElement RandomFieldElement(SecureRandom r)
+        {
+            uint[] x = Nat224.Create();
+            SecP224R1Field.Random(r, x);
+            return new SecP224R1FieldElement(x);
+        }
+
+        public override ECFieldElement RandomFieldElementMult(SecureRandom r)
+        {
+            uint[] x = Nat224.Create();
+            SecP224R1Field.RandomMult(r, x);
+            return new SecP224R1FieldElement(x);
+        }
+
+        private class SecP224R1LookupTable
+            : AbstractECLookupTable
+        {
+            private readonly SecP224R1Curve m_outer;
+            private readonly uint[] m_table;
+            private readonly int m_size;
+
+            internal SecP224R1LookupTable(SecP224R1Curve outer, uint[] table, int size)
+            {
+                this.m_outer = outer;
+                this.m_table = table;
+                this.m_size = size;
+            }
+
+            public override int Size
+            {
+                get { return m_size; }
+            }
+
+            public override ECPoint Lookup(int index)
+            {
+                uint[] x = Nat224.Create(), y = Nat224.Create();
+                int pos = 0;
+
+                for (int i = 0; i < m_size; ++i)
+                {
+                    uint MASK = (uint)(((i ^ index) - 1) >> 31);
+
+                    for (int j = 0; j < SECP224R1_FE_INTS; ++j)
+                    {
+                        x[j] ^= m_table[pos + j] & MASK;
+                        y[j] ^= m_table[pos + SECP224R1_FE_INTS + j] & MASK;
+                    }
+
+                    pos += (SECP224R1_FE_INTS * 2);
+                }
+
+                return CreatePoint(x, y);
+            }
+
+            public override ECPoint LookupVar(int index)
+            {
+                uint[] x = Nat224.Create(), y = Nat224.Create();
+                int pos = index * SECP224R1_FE_INTS * 2;
+
+                for (int j = 0; j < SECP224R1_FE_INTS; ++j)
+                {
+                    x[j] = m_table[pos + j];
+                    y[j] = m_table[pos + SECP224R1_FE_INTS + j];
+                }
+
+                return CreatePoint(x, y);
+            }
+
+            private ECPoint CreatePoint(uint[] x, uint[] y)
+            {
+                return m_outer.CreateRawPoint(new SecP224R1FieldElement(x), new SecP224R1FieldElement(y), SECP224R1_AFFINE_ZS);
+            }
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP224R1Curve.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 994b1ae3b0bcbef4f835df86ca21931a
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP224R1Field.cs

@@ -0,0 +1,341 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+using System.Diagnostics;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto.Utilities;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP224R1Field
+    {
+        // 2^224 - 2^96 + 1
+        internal static readonly uint[] P = new uint[]{ 0x00000001, 0x00000000, 0x00000000, 0xFFFFFFFF, 0xFFFFFFFF,
+            0xFFFFFFFF, 0xFFFFFFFF };
+        private static readonly uint[] PExt = new uint[]{ 0x00000001, 0x00000000, 0x00000000, 0xFFFFFFFE, 0xFFFFFFFF,
+            0xFFFFFFFF, 0x00000000, 0x00000002, 0x00000000, 0x00000000, 0xFFFFFFFE, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF
+        };
+        private static readonly uint[] PExtInv = new uint[]{ 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x00000001,
+            0x00000000, 0x00000000, 0xFFFFFFFF, 0xFFFFFFFD, 0xFFFFFFFF, 0xFFFFFFFF, 0x00000001 };
+        private const uint P6 = 0xFFFFFFFF;
+        private const uint PExt13 = 0xFFFFFFFF;
+
+        public static void Add(uint[] x, uint[] y, uint[] z)
+        {
+            uint c = Nat224.Add(x, y, z);
+            if (c != 0 || (z[6] == P6 && Nat224.Gte(z, P)))
+            {
+                AddPInvTo(z);
+            }
+        }
+
+        public static void AddExt(uint[] xx, uint[] yy, uint[] zz)
+        {
+            uint c = Nat.Add(14, xx, yy, zz);
+            if (c != 0 || (zz[13] == PExt13 && Nat.Gte(14, zz, PExt)))
+            {
+                if (Nat.AddTo(PExtInv.Length, PExtInv, zz) != 0)
+                {
+                    Nat.IncAt(14, zz, PExtInv.Length);
+                }
+            }
+        }
+
+        public static void AddOne(uint[] x, uint[] z)
+        {
+            uint c = Nat.Inc(7, x, z);
+            if (c != 0 || (z[6] == P6 && Nat224.Gte(z, P)))
+            {
+                AddPInvTo(z);
+            }
+        }
+
+        public static uint[] FromBigInteger(BigInteger x)
+        {
+            uint[] z = Nat.FromBigInteger(224, x);
+            if (z[6] == P6 && Nat224.Gte(z, P))
+            {
+                Nat224.SubFrom(P, z);
+            }
+            return z;
+        }
+
+        public static void Half(uint[] x, uint[] z)
+        {
+            if ((x[0] & 1) == 0)
+            {
+                Nat.ShiftDownBit(7, x, 0, z);
+            }
+            else
+            {
+                uint c = Nat224.Add(x, P, z);
+                Nat.ShiftDownBit(7, z, c);
+            }
+        }
+
+        public static void Inv(uint[] x, uint[] z)
+        {
+            Mod.CheckedModOddInverse(P, x, z);
+        }
+
+        public static int IsZero(uint[] x)
+        {
+            uint d = 0;
+            for (int i = 0; i < 7; ++i)
+            {
+                d |= x[i];
+            }
+            d = (d >> 1) | (d & 1);
+            return ((int)d - 1) >> 31;
+        }
+
+        public static void Multiply(uint[] x, uint[] y, uint[] z)
+        {
+            uint[] tt = Nat224.CreateExt();
+            Nat224.Mul(x, y, tt);
+            Reduce(tt, z);
+        }
+
+        public static void MultiplyAddToExt(uint[] x, uint[] y, uint[] zz)
+        {
+            uint c = Nat224.MulAddTo(x, y, zz);
+            if (c != 0 || (zz[13] == PExt13 && Nat.Gte(14, zz, PExt)))
+            {
+                if (Nat.AddTo(PExtInv.Length, PExtInv, zz) != 0)
+                {
+                    Nat.IncAt(14, zz, PExtInv.Length);
+                }
+            }
+        }
+
+        public static void Negate(uint[] x, uint[] z)
+        {
+            if (0 != IsZero(x))
+            {
+                Nat224.Sub(P, P, z);
+            }
+            else
+            {
+                Nat224.Sub(P, x, z);
+            }
+        }
+
+        public static void Random(SecureRandom r, uint[] z)
+        {
+            byte[] bb = new byte[7 * 4];
+            do
+            {
+                r.NextBytes(bb);
+                Pack.LE_To_UInt32(bb, 0, z, 0, 7);
+            }
+            while (0 == Nat.LessThan(7, z, P));
+        }
+
+        public static void RandomMult(SecureRandom r, uint[] z)
+        {
+            do
+            {
+                Random(r, z);
+            }
+            while (0 != IsZero(z));
+        }
+
+        public static void Reduce(uint[] xx, uint[] z)
+        {
+            long xx10 = xx[10], xx11 = xx[11], xx12 = xx[12], xx13 = xx[13];
+
+            const long n = 1;
+
+            long t0 = (long)xx[7] + xx11 - n;
+            long t1 = (long)xx[8] + xx12;
+            long t2 = (long)xx[9] + xx13;
+
+            long cc = 0;
+            cc += (long)xx[0] - t0;
+            long z0 = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[1] - t1;
+            z[1] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[2] - t2;
+            z[2] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[3] + t0 - xx10;
+            long z3 = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[4] + t1 - xx11;
+            z[4] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[5] + t2 - xx12;
+            z[5] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[6] + xx10 - xx13;
+            z[6] = (uint)cc;
+            cc >>= 32;
+            cc += n;
+
+            Debug.Assert(cc >= 0);
+
+            z3 += cc;
+
+            z0 -= cc;
+            z[0] = (uint)z0;
+            cc = z0 >> 32;
+            if (cc != 0)
+            {
+                cc += (long)z[1];
+                z[1] = (uint)cc;
+                cc >>= 32;
+                cc += (long)z[2];
+                z[2] = (uint)cc;
+                z3 += cc >> 32;
+            }
+            z[3] = (uint)z3;
+            cc = z3 >> 32;
+
+            Debug.Assert(cc == 0 || cc == 1);
+
+            if ((cc != 0 && Nat.IncAt(7, z, 4) != 0)
+                || (z[6] == P6 && Nat224.Gte(z, P)))
+            {
+                AddPInvTo(z);
+            }
+        }
+
+        public static void Reduce32(uint x, uint[] z)
+        {
+            long cc = 0;
+
+            if (x != 0)
+            {
+                long xx07 = x;
+
+                cc += (long)z[0] - xx07;
+                z[0] = (uint)cc;
+                cc >>= 32;
+                if (cc != 0)
+                {
+                    cc += (long)z[1];
+                    z[1] = (uint)cc;
+                    cc >>= 32;
+                    cc += (long)z[2];
+                    z[2] = (uint)cc;
+                    cc >>= 32;
+                }
+                cc += (long)z[3] + xx07;
+                z[3] = (uint)cc;
+                cc >>= 32;
+
+                Debug.Assert(cc == 0 || cc == 1);
+            }
+
+            if ((cc != 0 && Nat.IncAt(7, z, 4) != 0)
+                || (z[6] == P6 && Nat224.Gte(z, P)))
+            {
+                AddPInvTo(z);
+            }
+        }
+
+        public static void Square(uint[] x, uint[] z)
+        {
+            uint[] tt = Nat224.CreateExt();
+            Nat224.Square(x, tt);
+            Reduce(tt, z);
+        }
+
+        public static void SquareN(uint[] x, int n, uint[] z)
+        {
+            Debug.Assert(n > 0);
+
+            uint[] tt = Nat224.CreateExt();
+            Nat224.Square(x, tt);
+            Reduce(tt, z);
+
+            while (--n > 0)
+            {
+                Nat224.Square(z, tt);
+                Reduce(tt, z);
+            }
+        }
+
+        public static void Subtract(uint[] x, uint[] y, uint[] z)
+        {
+            int c = Nat224.Sub(x, y, z);
+            if (c != 0)
+            {
+                SubPInvFrom(z);
+            }
+        }
+
+        public static void SubtractExt(uint[] xx, uint[] yy, uint[] zz)
+        {
+            int c = Nat.Sub(14, xx, yy, zz);
+            if (c != 0)
+            {
+                if (Nat.SubFrom(PExtInv.Length, PExtInv, zz) != 0)
+                {
+                    Nat.DecAt(14, zz, PExtInv.Length);
+                }
+            }
+        }
+
+        public static void Twice(uint[] x, uint[] z)
+        {
+            uint c = Nat.ShiftUpBit(7, x, 0, z);
+            if (c != 0 || (z[6] == P6 && Nat224.Gte(z, P)))
+            {
+                AddPInvTo(z);
+            }
+        }
+
+        private static void AddPInvTo(uint[] z)
+        {
+            long c = (long)z[0] - 1;
+            z[0] = (uint)c;
+            c >>= 32;
+            if (c != 0)
+            {
+                c += (long)z[1];
+                z[1] = (uint)c;
+                c >>= 32;
+                c += (long)z[2];
+                z[2] = (uint)c;
+                c >>= 32;
+            }
+            c += (long)z[3] + 1;
+            z[3] = (uint)c;
+            c >>= 32;
+            if (c != 0)
+            {
+                Nat.IncAt(7, z, 4);
+            }
+        }
+
+        private static void SubPInvFrom(uint[] z)
+        {
+            long c = (long)z[0] + 1;
+            z[0] = (uint)c;
+            c >>= 32;
+            if (c != 0)
+            {
+                c += (long)z[1];
+                z[1] = (uint)c;
+                c >>= 32;
+                c += (long)z[2];
+                z[2] = (uint)c;
+                c >>= 32;
+            }
+            c += (long)z[3] - 1;
+            z[3] = (uint)c;
+            c >>= 32;
+            if (c != 0)
+            {
+                Nat.DecAt(7, z, 4);
+            }
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP224R1Field.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 0d6a512d6eb991e4387453c92c828d27
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP224R1FieldElement.cs

@@ -0,0 +1,275 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities.Encoders;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP224R1FieldElement
+        : AbstractFpFieldElement
+    {
+        public static readonly BigInteger Q = new BigInteger(1,
+            Hex.DecodeStrict("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF000000000000000000000001"));
+
+        protected internal readonly uint[] x;
+
+        public SecP224R1FieldElement(BigInteger x)
+        {
+            if (x == null || x.SignValue < 0 || x.CompareTo(Q) >= 0)
+                throw new ArgumentException("value invalid for SecP224R1FieldElement", "x");
+
+            this.x = SecP224R1Field.FromBigInteger(x);
+        }
+
+        public SecP224R1FieldElement()
+        {
+            this.x = Nat224.Create();
+        }
+
+        protected internal SecP224R1FieldElement(uint[] x)
+        {
+            this.x = x;
+        }
+
+        public override bool IsZero
+        {
+            get { return Nat224.IsZero(x); }
+        }
+
+        public override bool IsOne
+        {
+            get { return Nat224.IsOne(x); }
+        }
+
+        public override bool TestBitZero()
+        {
+            return Nat224.GetBit(x, 0) == 1;
+        }
+
+        public override BigInteger ToBigInteger()
+        {
+            return Nat224.ToBigInteger(x);
+        }
+
+        public override string FieldName
+        {
+            get { return "SecP224R1Field"; }
+        }
+
+        public override int FieldSize
+        {
+            get { return Q.BitLength; }
+        }
+
+        public override ECFieldElement Add(ECFieldElement b)
+        {
+            uint[] z = Nat224.Create();
+            SecP224R1Field.Add(x, ((SecP224R1FieldElement)b).x, z);
+            return new SecP224R1FieldElement(z);
+        }
+
+        public override ECFieldElement AddOne()
+        {
+            uint[] z = Nat224.Create();
+            SecP224R1Field.AddOne(x, z);
+            return new SecP224R1FieldElement(z);
+        }
+
+        public override ECFieldElement Subtract(ECFieldElement b)
+        {
+            uint[] z = Nat224.Create();
+            SecP224R1Field.Subtract(x, ((SecP224R1FieldElement)b).x, z);
+            return new SecP224R1FieldElement(z);
+        }
+
+        public override ECFieldElement Multiply(ECFieldElement b)
+        {
+            uint[] z = Nat224.Create();
+            SecP224R1Field.Multiply(x, ((SecP224R1FieldElement)b).x, z);
+            return new SecP224R1FieldElement(z);
+        }
+
+        public override ECFieldElement Divide(ECFieldElement b)
+        {
+            //return Multiply(b.Invert());
+            uint[] z = Nat224.Create();
+            SecP224R1Field.Inv(((SecP224R1FieldElement)b).x, z);
+            SecP224R1Field.Multiply(z, x, z);
+            return new SecP224R1FieldElement(z);
+        }
+
+        public override ECFieldElement Negate()
+        {
+            uint[] z = Nat224.Create();
+            SecP224R1Field.Negate(x, z);
+            return new SecP224R1FieldElement(z);
+        }
+
+        public override ECFieldElement Square()
+        {
+            uint[] z = Nat224.Create();
+            SecP224R1Field.Square(x, z);
+            return new SecP224R1FieldElement(z);
+        }
+
+        public override ECFieldElement Invert()
+        {
+            uint[] z = Nat224.Create();
+            SecP224R1Field.Inv(x, z);
+            return new SecP224R1FieldElement(z);
+        }
+
+        /**
+         * return a sqrt root - the routine verifies that the calculation returns the right value - if
+         * none exists it returns null.
+         */
+        public override ECFieldElement Sqrt()
+        {
+            uint[] c = this.x;
+            if (Nat224.IsZero(c) || Nat224.IsOne(c))
+                return this;
+
+            uint[] nc = Nat224.Create();
+            SecP224R1Field.Negate(c, nc);
+
+            uint[] r = Mod.Random(SecureRandom.ArbitraryRandom, SecP224R1Field.P);
+            uint[] t = Nat224.Create();
+
+            if (!IsSquare(c))
+                return null;
+
+            while (!TrySqrt(nc, r, t))
+            {
+                SecP224R1Field.AddOne(r, r);
+            }
+
+            SecP224R1Field.Square(t, r);
+
+            return Nat224.Eq(c, r) ? new SecP224R1FieldElement(t) : null;
+        }
+
+        public override bool Equals(object obj)
+        {
+            return Equals(obj as SecP224R1FieldElement);
+        }
+
+        public override bool Equals(ECFieldElement other)
+        {
+            return Equals(other as SecP224R1FieldElement);
+        }
+
+        public virtual bool Equals(SecP224R1FieldElement other)
+        {
+            if (this == other)
+                return true;
+            if (null == other)
+                return false;
+            return Nat224.Eq(x, other.x);
+        }
+
+        public override int GetHashCode()
+        {
+            return Q.GetHashCode() ^ Arrays.GetHashCode(x, 0, 7);
+        }
+
+        private static bool IsSquare(uint[] x)
+        {
+            uint[] t1 = Nat224.Create();
+            uint[] t2 = Nat224.Create();
+            Nat224.Copy(x, t1);
+
+            for (int i = 0; i < 7; ++i)
+            {
+                Nat224.Copy(t1, t2);
+                SecP224R1Field.SquareN(t1, 1 << i, t1);
+                SecP224R1Field.Multiply(t1, t2, t1);
+            }
+
+            SecP224R1Field.SquareN(t1, 95, t1);
+            return Nat224.IsOne(t1);
+        }
+
+        private static void RM(uint[] nc, uint[] d0, uint[] e0, uint[] d1, uint[] e1, uint[] f1, uint[] t)
+        {
+            SecP224R1Field.Multiply(e1, e0, t);
+            SecP224R1Field.Multiply(t, nc, t);
+            SecP224R1Field.Multiply(d1, d0, f1);
+            SecP224R1Field.Add(f1, t, f1);
+            SecP224R1Field.Multiply(d1, e0, t);
+            Nat224.Copy(f1, d1);
+            SecP224R1Field.Multiply(e1, d0, e1);
+            SecP224R1Field.Add(e1, t, e1);
+            SecP224R1Field.Square(e1, f1);
+            SecP224R1Field.Multiply(f1, nc, f1);
+        }
+
+        private static void RP(uint[] nc, uint[] d1, uint[] e1, uint[] f1, uint[] t)
+        {
+            Nat224.Copy(nc, f1);
+
+            uint[] d0 = Nat224.Create();
+            uint[] e0 = Nat224.Create();
+
+            for (int i = 0; i < 7; ++i)
+            {
+                Nat224.Copy(d1, d0);
+                Nat224.Copy(e1, e0);
+
+                int j = 1 << i;
+                while (--j >= 0)
+                {
+                    RS(d1, e1, f1, t);
+                }
+
+                RM(nc, d0, e0, d1, e1, f1, t);
+            }
+        }
+
+        private static void RS(uint[] d, uint[] e, uint[] f, uint[] t)
+        {
+            SecP224R1Field.Multiply(e, d, e);
+            SecP224R1Field.Twice(e, e);
+            SecP224R1Field.Square(d, t);
+            SecP224R1Field.Add(f, t, d);
+            SecP224R1Field.Multiply(f, t, f);
+            uint c = Nat.ShiftUpBits(7, f, 2, 0);
+            SecP224R1Field.Reduce32(c, f);
+        }
+
+        private static bool TrySqrt(uint[] nc, uint[] r, uint[] t)
+        {
+            uint[] d1 = Nat224.Create();
+            Nat224.Copy(r, d1);
+            uint[] e1 = Nat224.Create();
+            e1[0] = 1;
+            uint[] f1 = Nat224.Create();
+            RP(nc, d1, e1, f1, t);
+
+            uint[] d0 = Nat224.Create();
+            uint[] e0 = Nat224.Create();
+
+            for (int k = 1; k < 96; ++k)
+            {
+                Nat224.Copy(d1, d0);
+                Nat224.Copy(e1, e0);
+
+                RS(d1, e1, f1, t);
+
+                if (Nat224.IsZero(d1))
+                {
+                    SecP224R1Field.Inv(e0, t);
+                    SecP224R1Field.Multiply(t, d0, t);
+                    return true;
+                }
+            }
+
+            return false;
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP224R1FieldElement.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: ec09615374fd6e64bbecd69995924dbd
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP224R1Point.cs

@@ -0,0 +1,249 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP224R1Point
+        : AbstractFpPoint
+    {
+        internal SecP224R1Point(ECCurve curve, ECFieldElement x, ECFieldElement y)
+            : base(curve, x, y)
+        {
+        }
+
+        internal SecP224R1Point(ECCurve curve, ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)
+            : base(curve, x, y, zs)
+        {
+        }
+
+        protected override ECPoint Detach()
+        {
+            return new SecP224R1Point(null, AffineXCoord, AffineYCoord);
+        }
+
+        public override ECPoint Add(ECPoint b)
+        {
+            if (this.IsInfinity)
+                return b;
+            if (b.IsInfinity)
+                return this;
+            if (this == b)
+                return Twice();
+
+            ECCurve curve = this.Curve;
+
+            SecP224R1FieldElement X1 = (SecP224R1FieldElement)this.RawXCoord, Y1 = (SecP224R1FieldElement)this.RawYCoord;
+            SecP224R1FieldElement X2 = (SecP224R1FieldElement)b.RawXCoord, Y2 = (SecP224R1FieldElement)b.RawYCoord;
+
+            SecP224R1FieldElement Z1 = (SecP224R1FieldElement)this.RawZCoords[0];
+            SecP224R1FieldElement Z2 = (SecP224R1FieldElement)b.RawZCoords[0];
+
+            uint c;
+            uint[] tt1 = Nat224.CreateExt();
+            uint[] t2 = Nat224.Create();
+            uint[] t3 = Nat224.Create();
+            uint[] t4 = Nat224.Create();
+
+            bool Z1IsOne = Z1.IsOne;
+            uint[] U2, S2;
+            if (Z1IsOne)
+            {
+                U2 = X2.x;
+                S2 = Y2.x;
+            }
+            else
+            {
+                S2 = t3;
+                SecP224R1Field.Square(Z1.x, S2);
+
+                U2 = t2;
+                SecP224R1Field.Multiply(S2, X2.x, U2);
+
+                SecP224R1Field.Multiply(S2, Z1.x, S2);
+                SecP224R1Field.Multiply(S2, Y2.x, S2);
+            }
+
+            bool Z2IsOne = Z2.IsOne;
+            uint[] U1, S1;
+            if (Z2IsOne)
+            {
+                U1 = X1.x;
+                S1 = Y1.x;
+            }
+            else
+            {
+                S1 = t4;
+                SecP224R1Field.Square(Z2.x, S1);
+
+                U1 = tt1;
+                SecP224R1Field.Multiply(S1, X1.x, U1);
+
+                SecP224R1Field.Multiply(S1, Z2.x, S1);
+                SecP224R1Field.Multiply(S1, Y1.x, S1);
+            }
+
+            uint[] H = Nat224.Create();
+            SecP224R1Field.Subtract(U1, U2, H);
+
+            uint[] R = t2;
+            SecP224R1Field.Subtract(S1, S2, R);
+
+            // Check if b == this or b == -this
+            if (Nat224.IsZero(H))
+            {
+                if (Nat224.IsZero(R))
+                {
+                    // this == b, i.e. this must be doubled
+                    return this.Twice();
+                }
+
+                // this == -b, i.e. the result is the point at infinity
+                return curve.Infinity;
+            }
+
+            uint[] HSquared = t3;
+            SecP224R1Field.Square(H, HSquared);
+
+            uint[] G = Nat224.Create();
+            SecP224R1Field.Multiply(HSquared, H, G);
+
+            uint[] V = t3;
+            SecP224R1Field.Multiply(HSquared, U1, V);
+
+            SecP224R1Field.Negate(G, G);
+            Nat224.Mul(S1, G, tt1);
+
+            c = Nat224.AddBothTo(V, V, G);
+            SecP224R1Field.Reduce32(c, G);
+
+            SecP224R1FieldElement X3 = new SecP224R1FieldElement(t4);
+            SecP224R1Field.Square(R, X3.x);
+            SecP224R1Field.Subtract(X3.x, G, X3.x);
+
+            SecP224R1FieldElement Y3 = new SecP224R1FieldElement(G);
+            SecP224R1Field.Subtract(V, X3.x, Y3.x);
+            SecP224R1Field.MultiplyAddToExt(Y3.x, R, tt1);
+            SecP224R1Field.Reduce(tt1, Y3.x);
+
+            SecP224R1FieldElement Z3 = new SecP224R1FieldElement(H);
+            if (!Z1IsOne)
+            {
+                SecP224R1Field.Multiply(Z3.x, Z1.x, Z3.x);
+            }
+            if (!Z2IsOne)
+            {
+                SecP224R1Field.Multiply(Z3.x, Z2.x, Z3.x);
+            }
+
+            ECFieldElement[] zs = new ECFieldElement[] { Z3 };
+
+            return new SecP224R1Point(curve, X3, Y3, zs);
+        }
+
+        public override ECPoint Twice()
+        {
+            if (this.IsInfinity)
+                return this;
+
+            ECCurve curve = this.Curve;
+
+            SecP224R1FieldElement Y1 = (SecP224R1FieldElement)this.RawYCoord;
+            if (Y1.IsZero)
+                return curve.Infinity;
+
+            SecP224R1FieldElement X1 = (SecP224R1FieldElement)this.RawXCoord, Z1 = (SecP224R1FieldElement)this.RawZCoords[0];
+
+            uint c;
+            uint[] t1 = Nat224.Create();
+            uint[] t2 = Nat224.Create();
+
+            uint[] Y1Squared = Nat224.Create();
+            SecP224R1Field.Square(Y1.x, Y1Squared);
+
+            uint[] T = Nat224.Create();
+            SecP224R1Field.Square(Y1Squared, T);
+
+            bool Z1IsOne = Z1.IsOne;
+
+            uint[] Z1Squared = Z1.x;
+            if (!Z1IsOne)
+            {
+                Z1Squared = t2;
+                SecP224R1Field.Square(Z1.x, Z1Squared);
+            }
+
+            SecP224R1Field.Subtract(X1.x, Z1Squared, t1);
+
+            uint[] M = t2;
+            SecP224R1Field.Add(X1.x, Z1Squared, M);
+            SecP224R1Field.Multiply(M, t1, M);
+            c = Nat224.AddBothTo(M, M, M);
+            SecP224R1Field.Reduce32(c, M);
+
+            uint[] S = Y1Squared;
+            SecP224R1Field.Multiply(Y1Squared, X1.x, S);
+            c = Nat.ShiftUpBits(7, S, 2, 0);
+            SecP224R1Field.Reduce32(c, S);
+
+            c = Nat.ShiftUpBits(7, T, 3, 0, t1);
+            SecP224R1Field.Reduce32(c, t1);
+
+            SecP224R1FieldElement X3 = new SecP224R1FieldElement(T);
+            SecP224R1Field.Square(M, X3.x);
+            SecP224R1Field.Subtract(X3.x, S, X3.x);
+            SecP224R1Field.Subtract(X3.x, S, X3.x);
+
+            SecP224R1FieldElement Y3 = new SecP224R1FieldElement(S);
+            SecP224R1Field.Subtract(S, X3.x, Y3.x);
+            SecP224R1Field.Multiply(Y3.x, M, Y3.x);
+            SecP224R1Field.Subtract(Y3.x, t1, Y3.x);
+
+            SecP224R1FieldElement Z3 = new SecP224R1FieldElement(M);
+            SecP224R1Field.Twice(Y1.x, Z3.x);
+            if (!Z1IsOne)
+            {
+                SecP224R1Field.Multiply(Z3.x, Z1.x, Z3.x);
+            }
+
+            return new SecP224R1Point(curve, X3, Y3, new ECFieldElement[] { Z3 });
+        }
+
+        public override ECPoint TwicePlus(ECPoint b)
+        {
+            if (this == b)
+                return ThreeTimes();
+            if (this.IsInfinity)
+                return b;
+            if (b.IsInfinity)
+                return Twice();
+
+            ECFieldElement Y1 = this.RawYCoord;
+            if (Y1.IsZero)
+                return b;
+
+            return Twice().Add(b);
+        }
+
+        public override ECPoint ThreeTimes()
+        {
+            if (this.IsInfinity || this.RawYCoord.IsZero)
+                return this;
+
+            // NOTE: Be careful about recursions between TwicePlus and ThreeTimes
+            return Twice().Add(this);
+        }
+
+        public override ECPoint Negate()
+        {
+            if (IsInfinity)
+                return this;
+
+            return new SecP224R1Point(Curve, RawXCoord, RawYCoord.Negate(), RawZCoords);
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP224R1Point.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: e2c3ae093fd3dce48839537407abb29e
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP256K1Curve.cs

@@ -0,0 +1,172 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities.Encoders;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP256K1Curve
+        : AbstractFpCurve
+    {
+        public static readonly BigInteger q = SecP256K1FieldElement.Q;
+
+        private const int SECP256K1_DEFAULT_COORDS = COORD_JACOBIAN;
+        private const int SECP256K1_FE_INTS = 8;
+        private static readonly ECFieldElement[] SECP256K1_AFFINE_ZS = new ECFieldElement[] { new SecP256K1FieldElement(BigInteger.One) };
+
+        protected readonly SecP256K1Point m_infinity;
+
+        public SecP256K1Curve()
+            : base(q)
+        {
+            this.m_infinity = new SecP256K1Point(this, null, null);
+
+            this.m_a = FromBigInteger(BigInteger.Zero);
+            this.m_b = FromBigInteger(BigInteger.ValueOf(7));
+            this.m_order = new BigInteger(1, Hex.DecodeStrict("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141"));
+            this.m_cofactor = BigInteger.One;
+            this.m_coord = SECP256K1_DEFAULT_COORDS;
+        }
+
+        protected override ECCurve CloneCurve()
+        {
+            return new SecP256K1Curve();
+        }
+
+        public override bool SupportsCoordinateSystem(int coord)
+        {
+            switch (coord)
+            {
+            case COORD_JACOBIAN:
+                return true;
+            default:
+                return false;
+            }
+        }
+
+        public virtual BigInteger Q
+        {
+            get { return q; }
+        }
+
+        public override ECPoint Infinity
+        {
+            get { return m_infinity; }
+        }
+
+        public override int FieldSize
+        {
+            get { return q.BitLength; }
+        }
+
+        public override ECFieldElement FromBigInteger(BigInteger x)
+        {
+            return new SecP256K1FieldElement(x);
+        }
+
+        protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y)
+        {
+            return new SecP256K1Point(this, x, y);
+        }
+
+        protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)
+        {
+            return new SecP256K1Point(this, x, y, zs);
+        }
+
+        public override ECLookupTable CreateCacheSafeLookupTable(ECPoint[] points, int off, int len)
+        {
+            uint[] table = new uint[len * SECP256K1_FE_INTS * 2];
+            {
+                int pos = 0;
+                for (int i = 0; i < len; ++i)
+                {
+                    ECPoint p = points[off + i];
+                    Nat256.Copy(((SecP256K1FieldElement)p.RawXCoord).x, 0, table, pos); pos += SECP256K1_FE_INTS;
+                    Nat256.Copy(((SecP256K1FieldElement)p.RawYCoord).x, 0, table, pos); pos += SECP256K1_FE_INTS;
+                }
+            }
+
+            return new SecP256K1LookupTable(this, table, len);
+        }
+
+        public override ECFieldElement RandomFieldElement(SecureRandom r)
+        {
+            uint[] x = Nat256.Create();
+            SecP256K1Field.Random(r, x);
+            return new SecP256K1FieldElement(x);
+        }
+
+        public override ECFieldElement RandomFieldElementMult(SecureRandom r)
+        {
+            uint[] x = Nat256.Create();
+            SecP256K1Field.RandomMult(r, x);
+            return new SecP256K1FieldElement(x);
+        }
+
+        private class SecP256K1LookupTable
+            : AbstractECLookupTable
+        {
+            private readonly SecP256K1Curve m_outer;
+            private readonly uint[] m_table;
+            private readonly int m_size;
+
+            internal SecP256K1LookupTable(SecP256K1Curve outer, uint[] table, int size)
+            {
+                this.m_outer = outer;
+                this.m_table = table;
+                this.m_size = size;
+            }
+
+            public override int Size
+            {
+                get { return m_size; }
+            }
+
+            public override ECPoint Lookup(int index)
+            {
+                uint[] x = Nat256.Create(), y = Nat256.Create();
+                int pos = 0;
+
+                for (int i = 0; i < m_size; ++i)
+                {
+                    uint MASK = (uint)(((i ^ index) - 1) >> 31);
+
+                    for (int j = 0; j < SECP256K1_FE_INTS; ++j)
+                    {
+                        x[j] ^= m_table[pos + j] & MASK;
+                        y[j] ^= m_table[pos + SECP256K1_FE_INTS + j] & MASK;
+                    }
+
+                    pos += (SECP256K1_FE_INTS * 2);
+                }
+
+                return CreatePoint(x, y);
+            }
+
+            public override ECPoint LookupVar(int index)
+            {
+                uint[] x = Nat256.Create(), y = Nat256.Create();
+                int pos = index * SECP256K1_FE_INTS * 2;
+
+                for (int j = 0; j < SECP256K1_FE_INTS; ++j)
+                {
+                    x[j] = m_table[pos + j];
+                    y[j] = m_table[pos + SECP256K1_FE_INTS + j];
+                }
+
+                return CreatePoint(x, y);
+            }
+
+            private ECPoint CreatePoint(uint[] x, uint[] y)
+            {
+                return m_outer.CreateRawPoint(new SecP256K1FieldElement(x), new SecP256K1FieldElement(y), SECP256K1_AFFINE_ZS);
+            }
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP256K1Curve.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: cc638d3c9d333c64bad41728fe8935d6
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP256K1Field.cs

@@ -0,0 +1,248 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+using System.Diagnostics;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto.Utilities;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP256K1Field
+    {
+        // 2^256 - 2^32 - 2^9 - 2^8 - 2^7 - 2^6 - 2^4 - 1
+        internal static readonly uint[] P = new uint[]{ 0xFFFFFC2F, 0xFFFFFFFE, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
+            0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF };
+        private static readonly uint[] PExt = new uint[]{ 0x000E90A1, 0x000007A2, 0x00000001, 0x00000000, 0x00000000,
+            0x00000000, 0x00000000, 0x00000000, 0xFFFFF85E, 0xFFFFFFFD, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
+            0xFFFFFFFF, 0xFFFFFFFF };
+        private static readonly uint[] PExtInv = new uint[]{ 0xFFF16F5F, 0xFFFFF85D, 0xFFFFFFFE, 0xFFFFFFFF,
+            0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x000007A1, 0x00000002 };
+        private const uint P7 = 0xFFFFFFFF;
+        private const uint PExt15 = 0xFFFFFFFF;
+        private const uint PInv33 = 0x3D1;
+
+        public static void Add(uint[] x, uint[] y, uint[] z)
+        {
+            uint c = Nat256.Add(x, y, z);
+            if (c != 0 || (z[7] == P7 && Nat256.Gte(z, P)))
+            {
+                Nat.Add33To(8, PInv33, z);
+            }
+        }
+
+        public static void AddExt(uint[] xx, uint[] yy, uint[] zz)
+        {
+            uint c = Nat.Add(16, xx, yy, zz);
+            if (c != 0 || (zz[15] == PExt15 && Nat.Gte(16, zz, PExt)))
+            {
+                if (Nat.AddTo(PExtInv.Length, PExtInv, zz) != 0)
+                {
+                    Nat.IncAt(16, zz, PExtInv.Length);
+                }
+            }
+        }
+
+        public static void AddOne(uint[] x, uint[] z)
+        {
+            uint c = Nat.Inc(8, x, z);
+            if (c != 0 || (z[7] == P7 && Nat256.Gte(z, P)))
+            {
+                Nat.Add33To(8, PInv33, z);
+            }
+        }
+
+        public static uint[] FromBigInteger(BigInteger x)
+        {
+            uint[] z = Nat.FromBigInteger(256, x);
+            if (z[7] == P7 && Nat256.Gte(z, P))
+            {
+                Nat256.SubFrom(P, z);
+            }
+            return z;
+        }
+
+        public static void Half(uint[] x, uint[] z)
+        {
+            if ((x[0] & 1) == 0)
+            {
+                Nat.ShiftDownBit(8, x, 0, z);
+            }
+            else
+            {
+                uint c = Nat256.Add(x, P, z);
+                Nat.ShiftDownBit(8, z, c);
+            }
+        }
+
+        public static void Inv(uint[] x, uint[] z)
+        {
+            Mod.CheckedModOddInverse(P, x, z);
+        }
+
+        public static int IsZero(uint[] x)
+        {
+            uint d = 0;
+            for (int i = 0; i < 8; ++i)
+            {
+                d |= x[i];
+            }
+            d = (d >> 1) | (d & 1);
+            return ((int)d - 1) >> 31;
+        }
+
+        public static void Multiply(uint[] x, uint[] y, uint[] z)
+        {
+            uint[] tt = Nat256.CreateExt();
+            Nat256.Mul(x, y, tt);
+            Reduce(tt, z);
+        }
+
+        public static void Multiply(uint[] x, uint[] y, uint[] z, uint[] tt)
+        {
+            Nat256.Mul(x, y, tt);
+            Reduce(tt, z);
+        }
+
+        public static void MultiplyAddToExt(uint[] x, uint[] y, uint[] zz)
+        {
+            uint c = Nat256.MulAddTo(x, y, zz);
+            if (c != 0 || (zz[15] == PExt15 && Nat.Gte(16, zz, PExt)))
+            {
+                if (Nat.AddTo(PExtInv.Length, PExtInv, zz) != 0)
+                {
+                    Nat.IncAt(16, zz, PExtInv.Length);
+                }
+            }
+        }
+
+        public static void Negate(uint[] x, uint[] z)
+        {
+            if (0 != IsZero(x))
+            {
+                Nat256.Sub(P, P, z);
+            }
+            else
+            {
+                Nat256.Sub(P, x, z);
+            }
+        }
+
+        public static void Random(SecureRandom r, uint[] z)
+        {
+            byte[] bb = new byte[8 * 4];
+            do
+            {
+                r.NextBytes(bb);
+                Pack.LE_To_UInt32(bb, 0, z, 0, 8);
+            }
+            while (0 == Nat.LessThan(8, z, P));
+        }
+
+        public static void RandomMult(SecureRandom r, uint[] z)
+        {
+            do
+            {
+                Random(r, z);
+            }
+            while (0 != IsZero(z));
+        }
+
+        public static void Reduce(uint[] xx, uint[] z)
+        {
+            ulong cc = Nat256.Mul33Add(PInv33, xx, 8, xx, 0, z, 0);
+            uint c = Nat256.Mul33DWordAdd(PInv33, cc, z, 0);
+
+            Debug.Assert(c == 0 || c == 1);
+
+            if (c != 0 || (z[7] == P7 && Nat256.Gte(z, P)))
+            {
+                Nat.Add33To(8, PInv33, z);
+            }
+        }
+
+        public static void Reduce32(uint x, uint[] z)
+        {
+            if ((x != 0 && Nat256.Mul33WordAdd(PInv33, x, z, 0) != 0)
+                || (z[7] == P7 && Nat256.Gte(z, P)))
+            {
+                Nat.Add33To(8, PInv33, z);
+            }
+        }
+
+        public static void Square(uint[] x, uint[] z)
+        {
+            uint[] tt = Nat256.CreateExt();
+            Nat256.Square(x, tt);
+            Reduce(tt, z);
+        }
+
+        public static void Square(uint[] x, uint[] z, uint[] tt)
+        {
+            Nat256.Square(x, tt);
+            Reduce(tt, z);
+        }
+
+        public static void SquareN(uint[] x, int n, uint[] z)
+        {
+            Debug.Assert(n > 0);
+
+            uint[] tt = Nat256.CreateExt();
+            Nat256.Square(x, tt);
+            Reduce(tt, z);
+
+            while (--n > 0)
+            {
+                Nat256.Square(z, tt);
+                Reduce(tt, z);
+            }
+        }
+
+        public static void SquareN(uint[] x, int n, uint[] z, uint[] tt)
+        {
+            Debug.Assert(n > 0);
+
+            Nat256.Square(x, tt);
+            Reduce(tt, z);
+
+            while (--n > 0)
+            {
+                Nat256.Square(z, tt);
+                Reduce(tt, z);
+            }
+        }
+
+        public static void Subtract(uint[] x, uint[] y, uint[] z)
+        {
+            int c = Nat256.Sub(x, y, z);
+            if (c != 0)
+            {
+                Nat.Sub33From(8, PInv33, z);
+            }
+        }
+
+        public static void SubtractExt(uint[] xx, uint[] yy, uint[] zz)
+        {
+            int c = Nat.Sub(16, xx, yy, zz);
+            if (c != 0)
+            {
+                if (Nat.SubFrom(PExtInv.Length, PExtInv, zz) != 0)
+                {
+                    Nat.DecAt(16, zz, PExtInv.Length);
+                }
+            }
+        }
+
+        public static void Twice(uint[] x, uint[] z)
+        {
+            uint c = Nat.ShiftUpBit(8, x, 0, z);
+            if (c != 0 || (z[7] == P7 && Nat256.Gte(z, P)))
+            {
+                Nat.Add33To(8, PInv33, z);
+            }
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP256K1Field.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 608dda2db7c79524698c3182e0289378
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP256K1FieldElement.cs

@@ -0,0 +1,220 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities.Encoders;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP256K1FieldElement
+        : AbstractFpFieldElement
+    {
+        public static readonly BigInteger Q = new BigInteger(1,
+            Hex.DecodeStrict("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2F"));
+
+        protected internal readonly uint[] x;
+
+        public SecP256K1FieldElement(BigInteger x)
+        {
+            if (x == null || x.SignValue < 0 || x.CompareTo(Q) >= 0)
+                throw new ArgumentException("value invalid for SecP256K1FieldElement", "x");
+
+            this.x = SecP256K1Field.FromBigInteger(x);
+        }
+
+        public SecP256K1FieldElement()
+        {
+            this.x = Nat256.Create();
+        }
+
+        protected internal SecP256K1FieldElement(uint[] x)
+        {
+            this.x = x;
+        }
+
+        public override bool IsZero
+        {
+            get { return Nat256.IsZero(x); }
+        }
+
+        public override bool IsOne
+        {
+            get { return Nat256.IsOne(x); }
+        }
+
+        public override bool TestBitZero()
+        {
+            return Nat256.GetBit(x, 0) == 1;
+        }
+
+        public override BigInteger ToBigInteger()
+        {
+            return Nat256.ToBigInteger(x);
+        }
+
+        public override string FieldName
+        {
+            get { return "SecP256K1Field"; }
+        }
+
+        public override int FieldSize
+        {
+            get { return Q.BitLength; }
+        }
+
+        public override ECFieldElement Add(ECFieldElement b)
+        {
+            uint[] z = Nat256.Create();
+            SecP256K1Field.Add(x, ((SecP256K1FieldElement)b).x, z);
+            return new SecP256K1FieldElement(z);
+        }
+
+        public override ECFieldElement AddOne()
+        {
+            uint[] z = Nat256.Create();
+            SecP256K1Field.AddOne(x, z);
+            return new SecP256K1FieldElement(z);
+        }
+
+        public override ECFieldElement Subtract(ECFieldElement b)
+        {
+            uint[] z = Nat256.Create();
+            SecP256K1Field.Subtract(x, ((SecP256K1FieldElement)b).x, z);
+            return new SecP256K1FieldElement(z);
+        }
+
+        public override ECFieldElement Multiply(ECFieldElement b)
+        {
+            uint[] z = Nat256.Create();
+            SecP256K1Field.Multiply(x, ((SecP256K1FieldElement)b).x, z);
+            return new SecP256K1FieldElement(z);
+        }
+
+        public override ECFieldElement Divide(ECFieldElement b)
+        {
+            //return Multiply(b.Invert());
+            uint[] z = Nat256.Create();
+            SecP256K1Field.Inv(((SecP256K1FieldElement)b).x, z);
+            SecP256K1Field.Multiply(z, x, z);
+            return new SecP256K1FieldElement(z);
+        }
+
+        public override ECFieldElement Negate()
+        {
+            uint[] z = Nat256.Create();
+            SecP256K1Field.Negate(x, z);
+            return new SecP256K1FieldElement(z);
+        }
+
+        public override ECFieldElement Square()
+        {
+            uint[] z = Nat256.Create();
+            SecP256K1Field.Square(x, z);
+            return new SecP256K1FieldElement(z);
+        }
+
+        public override ECFieldElement Invert()
+        {
+            uint[] z = Nat256.Create();
+            SecP256K1Field.Inv(x, z);
+            return new SecP256K1FieldElement(z);
+        }
+
+        /**
+         * return a sqrt root - the routine verifies that the calculation returns the right value - if
+         * none exists it returns null.
+         */
+        public override ECFieldElement Sqrt()
+        {
+            /*
+             * Raise this element to the exponent 2^254 - 2^30 - 2^7 - 2^6 - 2^5 - 2^4 - 2^2
+             * 
+             * Breaking up the exponent's binary representation into "repunits", we get:
+             * { 223 1s } { 1 0s } { 22 1s } { 4 0s } { 2 1s } { 2 0s}
+             * 
+             * Therefore we need an addition chain containing 2, 22, 223 (the lengths of the repunits)
+             * We use: 1, [2], 3, 6, 9, 11, [22], 44, 88, 176, 220, [223]
+             */
+
+            uint[] x1 = this.x;
+            if (Nat256.IsZero(x1) || Nat256.IsOne(x1))
+                return this;
+
+            uint[] tt0 = Nat256.CreateExt();
+
+            uint[] x2 = Nat256.Create();
+            SecP256K1Field.Square(x1, x2, tt0);
+            SecP256K1Field.Multiply(x2, x1, x2, tt0);
+            uint[] x3 = Nat256.Create();
+            SecP256K1Field.Square(x2, x3, tt0);
+            SecP256K1Field.Multiply(x3, x1, x3, tt0);
+            uint[] x6 = Nat256.Create();
+            SecP256K1Field.SquareN(x3, 3, x6, tt0);
+            SecP256K1Field.Multiply(x6, x3, x6, tt0);
+            uint[] x9 = x6;
+            SecP256K1Field.SquareN(x6, 3, x9, tt0);
+            SecP256K1Field.Multiply(x9, x3, x9, tt0);
+            uint[] x11 = x9;
+            SecP256K1Field.SquareN(x9, 2, x11, tt0);
+            SecP256K1Field.Multiply(x11, x2, x11, tt0);
+            uint[] x22 = Nat256.Create();
+            SecP256K1Field.SquareN(x11, 11, x22, tt0);
+            SecP256K1Field.Multiply(x22, x11, x22, tt0);
+            uint[] x44 = x11;
+            SecP256K1Field.SquareN(x22, 22, x44, tt0);
+            SecP256K1Field.Multiply(x44, x22, x44, tt0);
+            uint[] x88 = Nat256.Create();
+            SecP256K1Field.SquareN(x44, 44, x88, tt0);
+            SecP256K1Field.Multiply(x88, x44, x88, tt0);
+            uint[] x176 = Nat256.Create();
+            SecP256K1Field.SquareN(x88, 88, x176, tt0);
+            SecP256K1Field.Multiply(x176, x88, x176, tt0);
+            uint[] x220 = x88;
+            SecP256K1Field.SquareN(x176, 44, x220, tt0);
+            SecP256K1Field.Multiply(x220, x44, x220, tt0);
+            uint[] x223 = x44;
+            SecP256K1Field.SquareN(x220, 3, x223, tt0);
+            SecP256K1Field.Multiply(x223, x3, x223, tt0);
+
+            uint[] t1 = x223;
+            SecP256K1Field.SquareN(t1, 23, t1, tt0);
+            SecP256K1Field.Multiply(t1, x22, t1, tt0);
+            SecP256K1Field.SquareN(t1, 6, t1, tt0);
+            SecP256K1Field.Multiply(t1, x2, t1, tt0);
+            SecP256K1Field.SquareN(t1, 2, t1, tt0);
+
+            uint[] t2 = x2;
+            SecP256K1Field.Square(t1, t2, tt0);
+
+            return Nat256.Eq(x1, t2) ? new SecP256K1FieldElement(t1) : null;
+        }
+
+        public override bool Equals(object obj)
+        {
+            return Equals(obj as SecP256K1FieldElement);
+        }
+
+        public override bool Equals(ECFieldElement other)
+        {
+            return Equals(other as SecP256K1FieldElement);
+        }
+
+        public virtual bool Equals(SecP256K1FieldElement other)
+        {
+            if (this == other)
+                return true;
+            if (null == other)
+                return false;
+            return Nat256.Eq(x, other.x);
+        }
+
+        public override int GetHashCode()
+        {
+            return Q.GetHashCode() ^ Arrays.GetHashCode(x, 0, 8);
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP256K1FieldElement.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 9d21546ca42446f4e95c7125ef071242
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP256K1Point.cs

@@ -0,0 +1,238 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP256K1Point
+        : AbstractFpPoint
+    {
+        internal SecP256K1Point(ECCurve curve, ECFieldElement x, ECFieldElement y)
+            : base(curve, x, y)
+        {
+        }
+
+        internal SecP256K1Point(ECCurve curve, ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)
+            : base(curve, x, y, zs)
+        {
+        }
+
+        protected override ECPoint Detach()
+        {
+            return new SecP256K1Point(null, AffineXCoord, AffineYCoord);
+        }
+
+        public override ECPoint Add(ECPoint b)
+        {
+            if (this.IsInfinity)
+                return b;
+            if (b.IsInfinity)
+                return this;
+            if (this == b)
+                return Twice();
+
+            ECCurve curve = this.Curve;
+
+            SecP256K1FieldElement X1 = (SecP256K1FieldElement)this.RawXCoord, Y1 = (SecP256K1FieldElement)this.RawYCoord;
+            SecP256K1FieldElement X2 = (SecP256K1FieldElement)b.RawXCoord, Y2 = (SecP256K1FieldElement)b.RawYCoord;
+
+            SecP256K1FieldElement Z1 = (SecP256K1FieldElement)this.RawZCoords[0];
+            SecP256K1FieldElement Z2 = (SecP256K1FieldElement)b.RawZCoords[0];
+
+            uint c;
+            uint[] tt0 = Nat256.CreateExt();
+            uint[] tt1 = Nat256.CreateExt();
+            uint[] t2 = Nat256.Create();
+            uint[] t3 = Nat256.Create();
+            uint[] t4 = Nat256.Create();
+
+            bool Z1IsOne = Z1.IsOne;
+            uint[] U2, S2;
+            if (Z1IsOne)
+            {
+                U2 = X2.x;
+                S2 = Y2.x;
+            }
+            else
+            {
+                S2 = t3;
+                SecP256K1Field.Square(Z1.x, S2, tt0);
+
+                U2 = t2;
+                SecP256K1Field.Multiply(S2, X2.x, U2, tt0);
+
+                SecP256K1Field.Multiply(S2, Z1.x, S2, tt0);
+                SecP256K1Field.Multiply(S2, Y2.x, S2, tt0);
+            }
+
+            bool Z2IsOne = Z2.IsOne;
+            uint[] U1, S1;
+            if (Z2IsOne)
+            {
+                U1 = X1.x;
+                S1 = Y1.x;
+            }
+            else
+            {
+                S1 = t4;
+                SecP256K1Field.Square(Z2.x, S1, tt0);
+
+                U1 = tt1;
+                SecP256K1Field.Multiply(S1, X1.x, U1, tt0);
+
+                SecP256K1Field.Multiply(S1, Z2.x, S1, tt0);
+                SecP256K1Field.Multiply(S1, Y1.x, S1, tt0);
+            }
+
+            uint[] H = Nat256.Create();
+            SecP256K1Field.Subtract(U1, U2, H);
+
+            uint[] R = t2;
+            SecP256K1Field.Subtract(S1, S2, R);
+
+            // Check if b == this or b == -this
+            if (Nat256.IsZero(H))
+            {
+                if (Nat256.IsZero(R))
+                {
+                    // this == b, i.e. this must be doubled
+                    return this.Twice();
+                }
+
+                // this == -b, i.e. the result is the point at infinity
+                return curve.Infinity;
+            }
+
+            uint[] HSquared = t3;
+            SecP256K1Field.Square(H, HSquared, tt0);
+
+            uint[] G = Nat256.Create();
+            SecP256K1Field.Multiply(HSquared, H, G, tt0);
+
+            uint[] V = t3;
+            SecP256K1Field.Multiply(HSquared, U1, V, tt0);
+
+            SecP256K1Field.Negate(G, G);
+            Nat256.Mul(S1, G, tt1);
+
+            c = Nat256.AddBothTo(V, V, G);
+            SecP256K1Field.Reduce32(c, G);
+
+            SecP256K1FieldElement X3 = new SecP256K1FieldElement(t4);
+            SecP256K1Field.Square(R, X3.x, tt0);
+            SecP256K1Field.Subtract(X3.x, G, X3.x);
+
+            SecP256K1FieldElement Y3 = new SecP256K1FieldElement(G);
+            SecP256K1Field.Subtract(V, X3.x, Y3.x);
+            SecP256K1Field.MultiplyAddToExt(Y3.x, R, tt1);
+            SecP256K1Field.Reduce(tt1, Y3.x);
+
+            SecP256K1FieldElement Z3 = new SecP256K1FieldElement(H);
+            if (!Z1IsOne)
+            {
+                SecP256K1Field.Multiply(Z3.x, Z1.x, Z3.x, tt0);
+            }
+            if (!Z2IsOne)
+            {
+                SecP256K1Field.Multiply(Z3.x, Z2.x, Z3.x, tt0);
+            }
+
+            ECFieldElement[] zs = new ECFieldElement[] { Z3 };
+
+            return new SecP256K1Point(curve, X3, Y3, zs);
+        }
+
+        public override ECPoint Twice()
+        {
+            if (this.IsInfinity)
+                return this;
+
+            ECCurve curve = this.Curve;
+
+            SecP256K1FieldElement Y1 = (SecP256K1FieldElement)this.RawYCoord;
+            if (Y1.IsZero)
+                return curve.Infinity;
+
+            SecP256K1FieldElement X1 = (SecP256K1FieldElement)this.RawXCoord, Z1 = (SecP256K1FieldElement)this.RawZCoords[0];
+
+            uint c;
+            uint[] tt0 = Nat256.CreateExt();
+
+            uint[] Y1Squared = Nat256.Create();
+            SecP256K1Field.Square(Y1.x, Y1Squared, tt0);
+
+            uint[] T = Nat256.Create();
+            SecP256K1Field.Square(Y1Squared, T, tt0);
+
+            uint[] M = Nat256.Create();
+            SecP256K1Field.Square(X1.x, M, tt0);
+            c = Nat256.AddBothTo(M, M, M);
+            SecP256K1Field.Reduce32(c, M);
+
+            uint[] S = Y1Squared;
+            SecP256K1Field.Multiply(Y1Squared, X1.x, S, tt0);
+            c = Nat.ShiftUpBits(8, S, 2, 0);
+            SecP256K1Field.Reduce32(c, S);
+
+            uint[] t1 = Nat256.Create();
+            c = Nat.ShiftUpBits(8, T, 3, 0, t1);
+            SecP256K1Field.Reduce32(c, t1);
+
+            SecP256K1FieldElement X3 = new SecP256K1FieldElement(T);
+            SecP256K1Field.Square(M, X3.x, tt0);
+            SecP256K1Field.Subtract(X3.x, S, X3.x);
+            SecP256K1Field.Subtract(X3.x, S, X3.x);
+
+            SecP256K1FieldElement Y3 = new SecP256K1FieldElement(S);
+            SecP256K1Field.Subtract(S, X3.x, Y3.x);
+            SecP256K1Field.Multiply(Y3.x, M, Y3.x, tt0);
+            SecP256K1Field.Subtract(Y3.x, t1, Y3.x);
+
+            SecP256K1FieldElement Z3 = new SecP256K1FieldElement(M);
+            SecP256K1Field.Twice(Y1.x, Z3.x);
+            if (!Z1.IsOne)
+            {
+                SecP256K1Field.Multiply(Z3.x, Z1.x, Z3.x, tt0);
+            }
+
+            return new SecP256K1Point(curve, X3, Y3, new ECFieldElement[] { Z3 });
+        }
+
+        public override ECPoint TwicePlus(ECPoint b)
+        {
+            if (this == b)
+                return ThreeTimes();
+            if (this.IsInfinity)
+                return b;
+            if (b.IsInfinity)
+                return Twice();
+
+            ECFieldElement Y1 = this.RawYCoord;
+            if (Y1.IsZero)
+                return b;
+
+            return Twice().Add(b);
+        }
+
+        public override ECPoint ThreeTimes()
+        {
+            if (this.IsInfinity || this.RawYCoord.IsZero)
+                return this;
+
+            // NOTE: Be careful about recursions between TwicePlus and ThreeTimes
+            return Twice().Add(this);
+        }
+
+        public override ECPoint Negate()
+        {
+            if (IsInfinity)
+                return this;
+
+            return new SecP256K1Point(Curve, RawXCoord, RawYCoord.Negate(), RawZCoords);
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP256K1Point.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: bd0044c4ee15670419af9195db5bb384
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP256R1Curve.cs

@@ -0,0 +1,174 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities.Encoders;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP256R1Curve
+        : AbstractFpCurve
+    {
+        public static readonly BigInteger q = SecP256R1FieldElement.Q;
+
+        private const int SECP256R1_DEFAULT_COORDS = COORD_JACOBIAN;
+        private const int SECP256R1_FE_INTS = 8;
+        private static readonly ECFieldElement[] SECP256R1_AFFINE_ZS = new ECFieldElement[] { new SecP256R1FieldElement(BigInteger.One) }; 
+
+        protected readonly SecP256R1Point m_infinity;
+
+        public SecP256R1Curve()
+            : base(q)
+        {
+            this.m_infinity = new SecP256R1Point(this, null, null);
+
+            this.m_a = FromBigInteger(new BigInteger(1,
+                Hex.DecodeStrict("FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFC")));
+            this.m_b = FromBigInteger(new BigInteger(1,
+                Hex.DecodeStrict("5AC635D8AA3A93E7B3EBBD55769886BC651D06B0CC53B0F63BCE3C3E27D2604B")));
+            this.m_order = new BigInteger(1, Hex.DecodeStrict("FFFFFFFF00000000FFFFFFFFFFFFFFFFBCE6FAADA7179E84F3B9CAC2FC632551"));
+            this.m_cofactor = BigInteger.One;
+            this.m_coord = SECP256R1_DEFAULT_COORDS;
+        }
+
+        protected override ECCurve CloneCurve()
+        {
+            return new SecP256R1Curve();
+        }
+
+        public override bool SupportsCoordinateSystem(int coord)
+        {
+            switch (coord)
+            {
+            case COORD_JACOBIAN:
+                return true;
+            default:
+                return false;
+            }
+        }
+
+        public virtual BigInteger Q
+        {
+            get { return q; }
+        }
+
+        public override ECPoint Infinity
+        {
+            get { return m_infinity; }
+        }
+
+        public override int FieldSize
+        {
+            get { return q.BitLength; }
+        }
+
+        public override ECFieldElement FromBigInteger(BigInteger x)
+        {
+            return new SecP256R1FieldElement(x);
+        }
+
+        protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y)
+        {
+            return new SecP256R1Point(this, x, y);
+        }
+
+        protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)
+        {
+            return new SecP256R1Point(this, x, y, zs);
+        }
+
+        public override ECLookupTable CreateCacheSafeLookupTable(ECPoint[] points, int off, int len)
+        {
+            uint[] table = new uint[len * SECP256R1_FE_INTS * 2];
+            {
+                int pos = 0;
+                for (int i = 0; i < len; ++i)
+                {
+                    ECPoint p = points[off + i];
+                    Nat256.Copy(((SecP256R1FieldElement)p.RawXCoord).x, 0, table, pos); pos += SECP256R1_FE_INTS;
+                    Nat256.Copy(((SecP256R1FieldElement)p.RawYCoord).x, 0, table, pos); pos += SECP256R1_FE_INTS;
+                }
+            }
+
+            return new SecP256R1LookupTable(this, table, len);
+        }
+
+        public override ECFieldElement RandomFieldElement(SecureRandom r)
+        {
+            uint[] x = Nat256.Create();
+            SecP256R1Field.Random(r, x);
+            return new SecP256R1FieldElement(x);
+        }
+
+        public override ECFieldElement RandomFieldElementMult(SecureRandom r)
+        {
+            uint[] x = Nat256.Create();
+            SecP256R1Field.RandomMult(r, x);
+            return new SecP256R1FieldElement(x);
+        }
+
+        private class SecP256R1LookupTable
+            : AbstractECLookupTable
+        {
+            private readonly SecP256R1Curve m_outer;
+            private readonly uint[] m_table;
+            private readonly int m_size;
+
+            internal SecP256R1LookupTable(SecP256R1Curve outer, uint[] table, int size)
+            {
+                this.m_outer = outer;
+                this.m_table = table;
+                this.m_size = size;
+            }
+
+            public override int Size
+            {
+                get { return m_size; }
+            }
+
+            public override ECPoint Lookup(int index)
+            {
+                uint[] x = Nat256.Create(), y = Nat256.Create();
+                int pos = 0;
+
+                for (int i = 0; i < m_size; ++i)
+                {
+                    uint MASK = (uint)(((i ^ index) - 1) >> 31);
+
+                    for (int j = 0; j < SECP256R1_FE_INTS; ++j)
+                    {
+                        x[j] ^= m_table[pos + j] & MASK;
+                        y[j] ^= m_table[pos + SECP256R1_FE_INTS + j] & MASK;
+                    }
+
+                    pos += (SECP256R1_FE_INTS * 2);
+                }
+
+                return CreatePoint(x, y);
+            }
+
+            public override ECPoint LookupVar(int index)
+            {
+                uint[] x = Nat256.Create(), y = Nat256.Create();
+                int pos = index * SECP256R1_FE_INTS * 2;
+
+                for (int j = 0; j < SECP256R1_FE_INTS; ++j)
+                {
+                    x[j] = m_table[pos + j];
+                    y[j] = m_table[pos + SECP256R1_FE_INTS + j];
+                }
+
+                return CreatePoint(x, y);
+            }
+
+            private ECPoint CreatePoint(uint[] x, uint[] y)
+            {
+                return m_outer.CreateRawPoint(new SecP256R1FieldElement(x), new SecP256R1FieldElement(y), SECP256R1_AFFINE_ZS);
+            }
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP256R1Curve.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 9a8aec9baf18876489e744ea976640b2
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP256R1Field.cs

@@ -0,0 +1,380 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+using System.Diagnostics;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto.Utilities;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP256R1Field
+    {
+        // 2^256 - 2^224 + 2^192 + 2^96 - 1
+        internal static readonly uint[] P = new uint[]{ 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000,
+            0x00000000, 0x00000001, 0xFFFFFFFF };
+        private static readonly uint[] PExt = new uint[]{ 0x00000001, 0x00000000, 0x00000000, 0xFFFFFFFE, 0xFFFFFFFF,
+            0xFFFFFFFF, 0xFFFFFFFE, 0x00000001, 0xFFFFFFFE, 0x00000001, 0xFFFFFFFE, 0x00000001, 0x00000001, 0xFFFFFFFE,
+            0x00000002, 0xFFFFFFFE };
+        private const uint P7 = 0xFFFFFFFF;
+        private const uint PExt15 = 0xFFFFFFFE;
+
+        public static void Add(uint[] x, uint[] y, uint[] z)
+        {
+            uint c = Nat256.Add(x, y, z);
+            if (c != 0 || (z[7] == P7 && Nat256.Gte(z, P)))
+            {
+                AddPInvTo(z);
+            }
+        }
+
+        public static void AddExt(uint[] xx, uint[] yy, uint[] zz)
+        {
+            uint c = Nat.Add(16, xx, yy, zz);
+            if (c != 0 || (zz[15] >= PExt15 && Nat.Gte(16, zz, PExt)))
+            {
+                Nat.SubFrom(16, PExt, zz);
+            }
+        }
+
+        public static void AddOne(uint[] x, uint[] z)
+        {
+            uint c = Nat.Inc(8, x, z);
+            if (c != 0 || (z[7] == P7 && Nat256.Gte(z, P)))
+            {
+                AddPInvTo(z);
+            }
+        }
+
+        public static uint[] FromBigInteger(BigInteger x)
+        {
+            uint[] z = Nat.FromBigInteger(256, x);
+            if (z[7] == P7 && Nat256.Gte(z, P))
+            {
+                Nat256.SubFrom(P, z);
+            }
+            return z;
+        }
+
+        public static void Half(uint[] x, uint[] z)
+        {
+            if ((x[0] & 1) == 0)
+            {
+                Nat.ShiftDownBit(8, x, 0, z);
+            }
+            else
+            {
+                uint c = Nat256.Add(x, P, z);
+                Nat.ShiftDownBit(8, z, c);
+            }
+        }
+
+        public static void Inv(uint[] x, uint[] z)
+        {
+            Mod.CheckedModOddInverse(P, x, z);
+        }
+
+        public static int IsZero(uint[] x)
+        {
+            uint d = 0;
+            for (int i = 0; i < 8; ++i)
+            {
+                d |= x[i];
+            }
+            d = (d >> 1) | (d & 1);
+            return ((int)d - 1) >> 31;
+        }
+
+        public static void Multiply(uint[] x, uint[] y, uint[] z)
+        {
+            uint[] tt = Nat256.CreateExt();
+            Nat256.Mul(x, y, tt);
+            Reduce(tt, z);
+        }
+
+        public static void Multiply(uint[] x, uint[] y, uint[] z, uint[] tt)
+        {
+            Nat256.Mul(x, y, tt);
+            Reduce(tt, z);
+        }
+
+        public static void MultiplyAddToExt(uint[] x, uint[] y, uint[] zz)
+        {
+            uint c = Nat256.MulAddTo(x, y, zz);
+            if (c != 0 || (zz[15] >= PExt15 && Nat.Gte(16, zz, PExt)))
+            {
+                Nat.SubFrom(16, PExt, zz);
+            }
+        }
+
+        public static void Negate(uint[] x, uint[] z)
+        {
+            if (0 != IsZero(x))
+            {
+                Nat256.Sub(P, P, z);
+            }
+            else
+            {
+                Nat256.Sub(P, x, z);
+            }
+        }
+
+        public static void Random(SecureRandom r, uint[] z)
+        {
+            byte[] bb = new byte[8 * 4];
+            do
+            {
+                r.NextBytes(bb);
+                Pack.LE_To_UInt32(bb, 0, z, 0, 8);
+            }
+            while (0 == Nat.LessThan(8, z, P));
+        }
+
+        public static void RandomMult(SecureRandom r, uint[] z)
+        {
+            do
+            {
+                Random(r, z);
+            }
+            while (0 != IsZero(z));
+        }
+
+        public static void Reduce(uint[] xx, uint[] z)
+        {
+            long xx08 = xx[8], xx09 = xx[9], xx10 = xx[10], xx11 = xx[11];
+            long xx12 = xx[12], xx13 = xx[13], xx14 = xx[14], xx15 = xx[15];
+
+            const long n = 6;
+
+            xx08 -= n;
+
+            long t0 = xx08 + xx09;
+            long t1 = xx09 + xx10;
+            long t2 = xx10 + xx11 - xx15;
+            long t3 = xx11 + xx12;
+            long t4 = xx12 + xx13;
+            long t5 = xx13 + xx14;
+            long t6 = xx14 + xx15;
+            long t7 = t5 - t0;
+
+            long cc = 0;
+            cc += (long)xx[0] - t3 - t7;
+            z[0] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[1] + t1 - t4 - t6;
+            z[1] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[2] + t2 - t5;
+            z[2] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[3] + (t3 << 1) + t7 - t6;
+            z[3] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[4] + (t4 << 1) + xx14 - t1;
+            z[4] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[5] + (t5 << 1) - t2;
+            z[5] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[6] + (t6 << 1) + t7;
+            z[6] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[7] + (xx15 << 1) + xx08 - t2 - t4;
+            z[7] = (uint)cc;
+            cc >>= 32;
+            cc += n;
+
+            Debug.Assert(cc >= 0);
+
+            Reduce32((uint)cc, z);
+        }
+
+        public static void Reduce32(uint x, uint[] z)
+        {
+            long cc = 0;
+
+            if (x != 0)
+            {
+                long xx08 = x;
+
+                cc += (long)z[0] + xx08;
+                z[0] = (uint)cc;
+                cc >>= 32;
+                if (cc != 0)
+                {
+                    cc += (long)z[1];
+                    z[1] = (uint)cc;
+                    cc >>= 32;
+                    cc += (long)z[2];
+                    z[2] = (uint)cc;
+                    cc >>= 32;
+                }
+                cc += (long)z[3] - xx08;
+                z[3] = (uint)cc;
+                cc >>= 32;
+                if (cc != 0)
+                {
+                    cc += (long)z[4];
+                    z[4] = (uint)cc;
+                    cc >>= 32;
+                    cc += (long)z[5];
+                    z[5] = (uint)cc;
+                    cc >>= 32;
+                }
+                cc += (long)z[6] - xx08;
+                z[6] = (uint)cc;
+                cc >>= 32;
+                cc += (long)z[7] + xx08;
+                z[7] = (uint)cc;
+                cc >>= 32;
+
+                Debug.Assert(cc == 0 || cc == 1);
+            }
+
+            if (cc != 0 || (z[7] == P7 && Nat256.Gte(z, P)))
+            {
+                AddPInvTo(z);
+            }
+        }
+
+        public static void Square(uint[] x, uint[] z)
+        {
+            uint[] tt = Nat256.CreateExt();
+            Nat256.Square(x, tt);
+            Reduce(tt, z);
+        }
+
+        public static void Square(uint[] x, uint[] z, uint[] tt)
+        {
+            Nat256.Square(x, tt);
+            Reduce(tt, z);
+        }
+
+        public static void SquareN(uint[] x, int n, uint[] z)
+        {
+            Debug.Assert(n > 0);
+
+            uint[] tt = Nat256.CreateExt();
+            Nat256.Square(x, tt);
+            Reduce(tt, z);
+
+            while (--n > 0)
+            {
+                Nat256.Square(z, tt);
+                Reduce(tt, z);
+            }
+        }
+
+        public static void SquareN(uint[] x, int n, uint[] z, uint[] tt)
+        {
+            Debug.Assert(n > 0);
+
+            Nat256.Square(x, tt);
+            Reduce(tt, z);
+
+            while (--n > 0)
+            {
+                Nat256.Square(z, tt);
+                Reduce(tt, z);
+            }
+        }
+
+        public static void Subtract(uint[] x, uint[] y, uint[] z)
+        {
+            int c = Nat256.Sub(x, y, z);
+            if (c != 0)
+            {
+                SubPInvFrom(z);
+            }
+        }
+
+        public static void SubtractExt(uint[] xx, uint[] yy, uint[] zz)
+        {
+            int c = Nat.Sub(16, xx, yy, zz);
+            if (c != 0)
+            {
+                Nat.AddTo(16, PExt, zz);
+            }
+        }
+
+        public static void Twice(uint[] x, uint[] z)
+        {
+            uint c = Nat.ShiftUpBit(8, x, 0, z);
+            if (c != 0 || (z[7] == P7 && Nat256.Gte(z, P)))
+            {
+                AddPInvTo(z);
+            }
+        }
+
+        private static void AddPInvTo(uint[] z)
+        {
+            long c = (long)z[0] + 1;
+            z[0] = (uint)c;
+            c >>= 32;
+            if (c != 0)
+            {
+                c += (long)z[1];
+                z[1] = (uint)c;
+                c >>= 32;
+                c += (long)z[2];
+                z[2] = (uint)c;
+                c >>= 32;
+            }
+            c += (long)z[3] - 1;
+            z[3] = (uint)c;
+            c >>= 32;
+            if (c != 0)
+            {
+                c += (long)z[4];
+                z[4] = (uint)c;
+                c >>= 32;
+                c += (long)z[5];
+                z[5] = (uint)c;
+                c >>= 32;
+            }
+            c += (long)z[6] - 1;
+            z[6] = (uint)c;
+            c >>= 32;
+            c += (long)z[7] + 1;
+            z[7] = (uint)c;
+            //c >>= 32;
+        }
+
+        private static void SubPInvFrom(uint[] z)
+        {
+            long c = (long)z[0] - 1;
+            z[0] = (uint)c;
+            c >>= 32;
+            if (c != 0)
+            {
+                c += (long)z[1];
+                z[1] = (uint)c;
+                c >>= 32;
+                c += (long)z[2];
+                z[2] = (uint)c;
+                c >>= 32;
+            }
+            c += (long)z[3] + 1;
+            z[3] = (uint)c;
+            c >>= 32;
+            if (c != 0)
+            {
+                c += (long)z[4];
+                z[4] = (uint)c;
+                c >>= 32;
+                c += (long)z[5];
+                z[5] = (uint)c;
+                c >>= 32;
+            }
+            c += (long)z[6] + 1;
+            z[6] = (uint)c;
+            c >>= 32;
+            c += (long)z[7] - 1;
+            z[7] = (uint)c;
+            //c >>= 32;
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP256R1Field.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 3640e5c2b2edffa45ae0610c1b75a04c
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP256R1FieldElement.cs

@@ -0,0 +1,194 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities.Encoders;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP256R1FieldElement
+        : AbstractFpFieldElement
+    {
+        public static readonly BigInteger Q = new BigInteger(1,
+            Hex.DecodeStrict("FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFF"));
+
+        protected internal readonly uint[] x;
+
+        public SecP256R1FieldElement(BigInteger x)
+        {
+            if (x == null || x.SignValue < 0 || x.CompareTo(Q) >= 0)
+                throw new ArgumentException("value invalid for SecP256R1FieldElement", "x");
+
+            this.x = SecP256R1Field.FromBigInteger(x);
+        }
+
+        public SecP256R1FieldElement()
+        {
+            this.x = Nat256.Create();
+        }
+
+        protected internal SecP256R1FieldElement(uint[] x)
+        {
+            this.x = x;
+        }
+
+        public override bool IsZero
+        {
+            get { return Nat256.IsZero(x); }
+        }
+
+        public override bool IsOne
+        {
+            get { return Nat256.IsOne(x); }
+        }
+
+        public override bool TestBitZero()
+        {
+            return Nat256.GetBit(x, 0) == 1;
+        }
+
+        public override BigInteger ToBigInteger()
+        {
+            return Nat256.ToBigInteger(x);
+        }
+
+        public override string FieldName
+        {
+            get { return "SecP256R1Field"; }
+        }
+
+        public override int FieldSize
+        {
+            get { return Q.BitLength; }
+        }
+
+        public override ECFieldElement Add(ECFieldElement b)
+        {
+            uint[] z = Nat256.Create();
+            SecP256R1Field.Add(x, ((SecP256R1FieldElement)b).x, z);
+            return new SecP256R1FieldElement(z);
+        }
+
+        public override ECFieldElement AddOne()
+        {
+            uint[] z = Nat256.Create();
+            SecP256R1Field.AddOne(x, z);
+            return new SecP256R1FieldElement(z);
+        }
+
+        public override ECFieldElement Subtract(ECFieldElement b)
+        {
+            uint[] z = Nat256.Create();
+            SecP256R1Field.Subtract(x, ((SecP256R1FieldElement)b).x, z);
+            return new SecP256R1FieldElement(z);
+        }
+
+        public override ECFieldElement Multiply(ECFieldElement b)
+        {
+            uint[] z = Nat256.Create();
+            SecP256R1Field.Multiply(x, ((SecP256R1FieldElement)b).x, z);
+            return new SecP256R1FieldElement(z);
+        }
+
+        public override ECFieldElement Divide(ECFieldElement b)
+        {
+            //return Multiply(b.Invert());
+            uint[] z = Nat256.Create();
+            SecP256R1Field.Inv(((SecP256R1FieldElement)b).x, z);
+            SecP256R1Field.Multiply(z, x, z);
+            return new SecP256R1FieldElement(z);
+        }
+
+        public override ECFieldElement Negate()
+        {
+            uint[] z = Nat256.Create();
+            SecP256R1Field.Negate(x, z);
+            return new SecP256R1FieldElement(z);
+        }
+
+        public override ECFieldElement Square()
+        {
+            uint[] z = Nat256.Create();
+            SecP256R1Field.Square(x, z);
+            return new SecP256R1FieldElement(z);
+        }
+
+        public override ECFieldElement Invert()
+        {
+            uint[] z = Nat256.Create();
+            SecP256R1Field.Inv(x, z);
+            return new SecP256R1FieldElement(z);
+        }
+
+        /**
+         * return a sqrt root - the routine verifies that the calculation returns the right value - if
+         * none exists it returns null.
+         */
+        public override ECFieldElement Sqrt()
+        {
+            // Raise this element to the exponent 2^254 - 2^222 + 2^190 + 2^94
+
+            uint[] x1 = this.x;
+            if (Nat256.IsZero(x1) || Nat256.IsOne(x1))
+                return this;
+
+            uint[] tt0 = Nat256.CreateExt();
+            uint[] t1 = Nat256.Create();
+            uint[] t2 = Nat256.Create();
+
+            SecP256R1Field.Square(x1, t1, tt0);
+            SecP256R1Field.Multiply(t1, x1, t1, tt0);
+
+            SecP256R1Field.SquareN(t1, 2, t2, tt0);
+            SecP256R1Field.Multiply(t2, t1, t2, tt0);
+
+            SecP256R1Field.SquareN(t2, 4, t1, tt0);
+            SecP256R1Field.Multiply(t1, t2, t1, tt0);
+
+            SecP256R1Field.SquareN(t1, 8, t2, tt0);
+            SecP256R1Field.Multiply(t2, t1, t2, tt0);
+
+            SecP256R1Field.SquareN(t2, 16, t1, tt0);
+            SecP256R1Field.Multiply(t1, t2, t1, tt0);
+
+            SecP256R1Field.SquareN(t1, 32, t1, tt0);
+            SecP256R1Field.Multiply(t1, x1, t1, tt0);
+
+            SecP256R1Field.SquareN(t1, 96, t1, tt0);
+            SecP256R1Field.Multiply(t1, x1, t1, tt0);
+
+            SecP256R1Field.SquareN(t1, 94, t1, tt0);
+            SecP256R1Field.Multiply(t1, t1, t2, tt0);
+
+            return Nat256.Eq(x1, t2) ? new SecP256R1FieldElement(t1) : null;
+        }
+
+        public override bool Equals(object obj)
+        {
+            return Equals(obj as SecP256R1FieldElement);
+        }
+
+        public override bool Equals(ECFieldElement other)
+        {
+            return Equals(other as SecP256R1FieldElement);
+        }
+
+        public virtual bool Equals(SecP256R1FieldElement other)
+        {
+            if (this == other)
+                return true;
+            if (null == other)
+                return false;
+            return Nat256.Eq(x, other.x);
+        }
+
+        public override int GetHashCode()
+        {
+            return Q.GetHashCode() ^ Arrays.GetHashCode(x, 0, 8);
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP256R1FieldElement.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: d8577a529c38b84438ba01a17b683c02
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP256R1Point.cs

@@ -0,0 +1,251 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP256R1Point
+        : AbstractFpPoint
+    {
+        internal SecP256R1Point(ECCurve curve, ECFieldElement x, ECFieldElement y)
+            : base(curve, x, y)
+        {
+        }
+
+        internal SecP256R1Point(ECCurve curve, ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)
+            : base(curve, x, y, zs)
+        {
+        }
+
+        protected override ECPoint Detach()
+        {
+            return new SecP256R1Point(null, AffineXCoord, AffineYCoord);
+        }
+
+        public override ECPoint Add(ECPoint b)
+        {
+            if (this.IsInfinity)
+                return b;
+            if (b.IsInfinity)
+                return this;
+            if (this == b)
+                return Twice();
+
+            ECCurve curve = this.Curve;
+
+            SecP256R1FieldElement X1 = (SecP256R1FieldElement)this.RawXCoord, Y1 = (SecP256R1FieldElement)this.RawYCoord;
+            SecP256R1FieldElement X2 = (SecP256R1FieldElement)b.RawXCoord, Y2 = (SecP256R1FieldElement)b.RawYCoord;
+
+            SecP256R1FieldElement Z1 = (SecP256R1FieldElement)this.RawZCoords[0];
+            SecP256R1FieldElement Z2 = (SecP256R1FieldElement)b.RawZCoords[0];
+
+            uint c;
+            uint[] tt0 = Nat256.CreateExt();
+            uint[] tt1 = Nat256.CreateExt();
+            uint[] t2 = Nat256.Create();
+            uint[] t3 = Nat256.Create();
+            uint[] t4 = Nat256.Create();
+
+            bool Z1IsOne = Z1.IsOne;
+            uint[] U2, S2;
+            if (Z1IsOne)
+            {
+                U2 = X2.x;
+                S2 = Y2.x;
+            }
+            else
+            {
+                S2 = t3;
+                SecP256R1Field.Square(Z1.x, S2, tt0);
+
+                U2 = t2;
+                SecP256R1Field.Multiply(S2, X2.x, U2, tt0);
+
+                SecP256R1Field.Multiply(S2, Z1.x, S2, tt0);
+                SecP256R1Field.Multiply(S2, Y2.x, S2, tt0);
+            }
+
+            bool Z2IsOne = Z2.IsOne;
+            uint[] U1, S1;
+            if (Z2IsOne)
+            {
+                U1 = X1.x;
+                S1 = Y1.x;
+            }
+            else
+            {
+                S1 = t4;
+                SecP256R1Field.Square(Z2.x, S1, tt0);
+
+                U1 = tt1;
+                SecP256R1Field.Multiply(S1, X1.x, U1, tt0);
+
+                SecP256R1Field.Multiply(S1, Z2.x, S1, tt0);
+                SecP256R1Field.Multiply(S1, Y1.x, S1, tt0);
+            }
+
+            uint[] H = Nat256.Create();
+            SecP256R1Field.Subtract(U1, U2, H);
+
+            uint[] R = t2;
+            SecP256R1Field.Subtract(S1, S2, R);
+
+            // Check if b == this or b == -this
+            if (Nat256.IsZero(H))
+            {
+                if (Nat256.IsZero(R))
+                {
+                    // this == b, i.e. this must be doubled
+                    return this.Twice();
+                }
+
+                // this == -b, i.e. the result is the point at infinity
+                return curve.Infinity;
+            }
+
+            uint[] HSquared = t3;
+            SecP256R1Field.Square(H, HSquared, tt0);
+
+            uint[] G = Nat256.Create();
+            SecP256R1Field.Multiply(HSquared, H, G, tt0);
+
+            uint[] V = t3;
+            SecP256R1Field.Multiply(HSquared, U1, V, tt0);
+
+            SecP256R1Field.Negate(G, G);
+            Nat256.Mul(S1, G, tt1);
+
+            c = Nat256.AddBothTo(V, V, G);
+            SecP256R1Field.Reduce32(c, G);
+
+            SecP256R1FieldElement X3 = new SecP256R1FieldElement(t4);
+            SecP256R1Field.Square(R, X3.x, tt0);
+            SecP256R1Field.Subtract(X3.x, G, X3.x);
+
+            SecP256R1FieldElement Y3 = new SecP256R1FieldElement(G);
+            SecP256R1Field.Subtract(V, X3.x, Y3.x);
+            SecP256R1Field.MultiplyAddToExt(Y3.x, R, tt1);
+            SecP256R1Field.Reduce(tt1, Y3.x);
+
+            SecP256R1FieldElement Z3 = new SecP256R1FieldElement(H);
+            if (!Z1IsOne)
+            {
+                SecP256R1Field.Multiply(Z3.x, Z1.x, Z3.x, tt0);
+            }
+            if (!Z2IsOne)
+            {
+                SecP256R1Field.Multiply(Z3.x, Z2.x, Z3.x, tt0);
+            }
+
+            ECFieldElement[] zs = new ECFieldElement[]{ Z3 };
+
+            return new SecP256R1Point(curve, X3, Y3, zs);
+        }
+
+        public override ECPoint Twice()
+        {
+            if (this.IsInfinity)
+                return this;
+
+            ECCurve curve = this.Curve;
+
+            SecP256R1FieldElement Y1 = (SecP256R1FieldElement)this.RawYCoord;
+            if (Y1.IsZero)
+                return curve.Infinity;
+
+            SecP256R1FieldElement X1 = (SecP256R1FieldElement)this.RawXCoord, Z1 = (SecP256R1FieldElement)this.RawZCoords[0];
+
+            uint c;
+            uint[] tt0 = Nat256.CreateExt();
+            uint[] t1 = Nat256.Create();
+            uint[] t2 = Nat256.Create();
+
+            uint[] Y1Squared = Nat256.Create();
+            SecP256R1Field.Square(Y1.x, Y1Squared, tt0);
+
+            uint[] T = Nat256.Create();
+            SecP256R1Field.Square(Y1Squared, T, tt0);
+
+            bool Z1IsOne = Z1.IsOne;
+
+            uint[] Z1Squared = Z1.x;
+            if (!Z1IsOne)
+            {
+                Z1Squared = t2;
+                SecP256R1Field.Square(Z1.x, Z1Squared, tt0);
+            }
+
+            SecP256R1Field.Subtract(X1.x, Z1Squared, t1);
+
+            uint[] M = t2;
+            SecP256R1Field.Add(X1.x, Z1Squared, M);
+            SecP256R1Field.Multiply(M, t1, M, tt0);
+            c = Nat256.AddBothTo(M, M, M);
+            SecP256R1Field.Reduce32(c, M);
+
+            uint[] S = Y1Squared;
+            SecP256R1Field.Multiply(Y1Squared, X1.x, S, tt0);
+            c = Nat.ShiftUpBits(8, S, 2, 0);
+            SecP256R1Field.Reduce32(c, S);
+
+            c = Nat.ShiftUpBits(8, T, 3, 0, t1);
+            SecP256R1Field.Reduce32(c, t1);
+
+            SecP256R1FieldElement X3 = new SecP256R1FieldElement(T);
+            SecP256R1Field.Square(M, X3.x, tt0);
+            SecP256R1Field.Subtract(X3.x, S, X3.x);
+            SecP256R1Field.Subtract(X3.x, S, X3.x);
+
+            SecP256R1FieldElement Y3 = new SecP256R1FieldElement(S);
+            SecP256R1Field.Subtract(S, X3.x, Y3.x);
+            SecP256R1Field.Multiply(Y3.x, M, Y3.x, tt0);
+            SecP256R1Field.Subtract(Y3.x, t1, Y3.x);
+
+            SecP256R1FieldElement Z3 = new SecP256R1FieldElement(M);
+            SecP256R1Field.Twice(Y1.x, Z3.x);
+            if (!Z1IsOne)
+            {
+                SecP256R1Field.Multiply(Z3.x, Z1.x, Z3.x, tt0);
+            }
+
+            return new SecP256R1Point(curve, X3, Y3, new ECFieldElement[]{ Z3 });
+        }
+
+        public override ECPoint TwicePlus(ECPoint b)
+        {
+            if (this == b)
+                return ThreeTimes();
+            if (this.IsInfinity)
+                return b;
+            if (b.IsInfinity)
+                return Twice();
+
+            ECFieldElement Y1 = this.RawYCoord;
+            if (Y1.IsZero)
+                return b;
+
+            return Twice().Add(b);
+        }
+
+        public override ECPoint ThreeTimes()
+        {
+            if (this.IsInfinity || this.RawYCoord.IsZero)
+                return this;
+
+            // NOTE: Be careful about recursions between TwicePlus and ThreeTimes
+            return Twice().Add(this);
+        }
+
+        public override ECPoint Negate()
+        {
+            if (IsInfinity)
+                return this;
+
+            return new SecP256R1Point(Curve, RawXCoord, RawYCoord.Negate(), RawZCoords);
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP256R1Point.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 78fe183c245187b44a7f2614e627f658
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP384R1Curve.cs

@@ -0,0 +1,174 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities.Encoders;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP384R1Curve
+        : AbstractFpCurve
+    {
+        public static readonly BigInteger q = SecP384R1FieldElement.Q;
+
+        private const int SECP384R1_DEFAULT_COORDS = COORD_JACOBIAN;
+        private const int SECP384R1_FE_INTS = 12;
+        private static readonly ECFieldElement[] SECP384R1_AFFINE_ZS = new ECFieldElement[] { new SecP384R1FieldElement(BigInteger.One) };
+
+        protected readonly SecP384R1Point m_infinity;
+
+        public SecP384R1Curve()
+            : base(q)
+        {
+            this.m_infinity = new SecP384R1Point(this, null, null);
+
+            this.m_a = FromBigInteger(new BigInteger(1,
+                Hex.DecodeStrict("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFF0000000000000000FFFFFFFC")));
+            this.m_b = FromBigInteger(new BigInteger(1,
+                Hex.DecodeStrict("B3312FA7E23EE7E4988E056BE3F82D19181D9C6EFE8141120314088F5013875AC656398D8A2ED19D2A85C8EDD3EC2AEF")));
+            this.m_order = new BigInteger(1, Hex.DecodeStrict("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFC7634D81F4372DDF581A0DB248B0A77AECEC196ACCC52973"));
+            this.m_cofactor = BigInteger.One;
+            this.m_coord = SECP384R1_DEFAULT_COORDS;
+        }
+
+        protected override ECCurve CloneCurve()
+        {
+            return new SecP384R1Curve();
+        }
+
+        public override bool SupportsCoordinateSystem(int coord)
+        {
+            switch (coord)
+            {
+                case COORD_JACOBIAN:
+                    return true;
+                default:
+                    return false;
+            }
+        }
+
+        public virtual BigInteger Q
+        {
+            get { return q; }
+        }
+
+        public override ECPoint Infinity
+        {
+            get { return m_infinity; }
+        }
+
+        public override int FieldSize
+        {
+            get { return q.BitLength; }
+        }
+
+        public override ECFieldElement FromBigInteger(BigInteger x)
+        {
+            return new SecP384R1FieldElement(x);
+        }
+
+        protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y)
+        {
+            return new SecP384R1Point(this, x, y);
+        }
+
+        protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)
+        {
+            return new SecP384R1Point(this, x, y, zs);
+        }
+
+        public override ECLookupTable CreateCacheSafeLookupTable(ECPoint[] points, int off, int len)
+        {
+            uint[] table = new uint[len * SECP384R1_FE_INTS * 2];
+            {
+                int pos = 0;
+                for (int i = 0; i < len; ++i)
+                {
+                    ECPoint p = points[off + i];
+                    Nat.Copy(SECP384R1_FE_INTS, ((SecP384R1FieldElement)p.RawXCoord).x, 0, table, pos); pos += SECP384R1_FE_INTS;
+                    Nat.Copy(SECP384R1_FE_INTS, ((SecP384R1FieldElement)p.RawYCoord).x, 0, table, pos); pos += SECP384R1_FE_INTS;
+                }
+            }
+
+            return new SecP384R1LookupTable(this, table, len);
+        }
+
+        public override ECFieldElement RandomFieldElement(SecureRandom r)
+        {
+            uint[] x = Nat.Create(12);
+            SecP384R1Field.Random(r, x);
+            return new SecP384R1FieldElement(x);
+        }
+
+        public override ECFieldElement RandomFieldElementMult(SecureRandom r)
+        {
+            uint[] x = Nat.Create(12);
+            SecP384R1Field.RandomMult(r, x);
+            return new SecP384R1FieldElement(x);
+        }
+
+        private class SecP384R1LookupTable
+            : AbstractECLookupTable
+        {
+            private readonly SecP384R1Curve m_outer;
+            private readonly uint[] m_table;
+            private readonly int m_size;
+
+            internal SecP384R1LookupTable(SecP384R1Curve outer, uint[] table, int size)
+            {
+                this.m_outer = outer;
+                this.m_table = table;
+                this.m_size = size;
+            }
+
+            public override int Size
+            {
+                get { return m_size; }
+            }
+
+            public override ECPoint Lookup(int index)
+            {
+                uint[] x = Nat.Create(SECP384R1_FE_INTS), y = Nat.Create(SECP384R1_FE_INTS);
+                int pos = 0;
+
+                for (int i = 0; i < m_size; ++i)
+                {
+                    uint MASK = (uint)(((i ^ index) - 1) >> 31);
+
+                    for (int j = 0; j < SECP384R1_FE_INTS; ++j)
+                    {
+                        x[j] ^= m_table[pos + j] & MASK;
+                        y[j] ^= m_table[pos + SECP384R1_FE_INTS + j] & MASK;
+                    }
+
+                    pos += (SECP384R1_FE_INTS * 2);
+                }
+
+                return CreatePoint(x, y);
+            }
+
+            public override ECPoint LookupVar(int index)
+            {
+                uint[] x = Nat.Create(SECP384R1_FE_INTS), y = Nat.Create(SECP384R1_FE_INTS);
+                int pos = index * SECP384R1_FE_INTS * 2;
+
+                for (int j = 0; j < SECP384R1_FE_INTS; ++j)
+                {
+                    x[j] = m_table[pos + j];
+                    y[j] = m_table[pos + SECP384R1_FE_INTS + j];
+                }
+
+                return CreatePoint(x, y);
+            }
+
+            private ECPoint CreatePoint(uint[] x, uint[] y)
+            {
+                return m_outer.CreateRawPoint(new SecP384R1FieldElement(x), new SecP384R1FieldElement(y), SECP384R1_AFFINE_ZS);
+            }
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP384R1Curve.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: fb0aa384df631da46ba41af8f288f320
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP384R1Field.cs

@@ -0,0 +1,364 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+using System.Diagnostics;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto.Utilities;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP384R1Field
+    {
+        // 2^384 - 2^128 - 2^96 + 2^32 - 1
+        internal static readonly uint[] P = new uint[]{ 0xFFFFFFFF, 0x00000000, 0x00000000, 0xFFFFFFFF, 0xFFFFFFFE,
+            0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF };
+        private static readonly uint[] PExt = new uint[]{ 0x00000001, 0xFFFFFFFE, 0x00000000, 0x00000002, 0x00000000,
+            0xFFFFFFFE, 0x00000000, 0x00000002, 0x00000001, 0x00000000, 0x00000000, 0x00000000, 0xFFFFFFFE, 0x00000001,
+            0x00000000, 0xFFFFFFFE, 0xFFFFFFFD, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
+            0xFFFFFFFF };
+        private static readonly uint[] PExtInv = new uint[]{ 0xFFFFFFFF, 0x00000001, 0xFFFFFFFF, 0xFFFFFFFD,
+            0xFFFFFFFF, 0x00000001, 0xFFFFFFFF, 0xFFFFFFFD, 0xFFFFFFFE, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x00000001,
+            0xFFFFFFFE, 0xFFFFFFFF, 0x00000001, 0x00000002 };
+        private const uint P11 = 0xFFFFFFFF;
+        private const uint PExt23 = 0xFFFFFFFF;
+
+        public static void Add(uint[] x, uint[] y, uint[] z)
+        {
+            uint c = Nat.Add(12, x, y, z);
+            if (c != 0 || (z[11] == P11 && Nat.Gte(12, z, P)))
+            {
+                AddPInvTo(z);
+            }
+        }
+
+        public static void AddExt(uint[] xx, uint[] yy, uint[] zz)
+        {
+            uint c = Nat.Add(24, xx, yy, zz);
+            if (c != 0 || (zz[23] == PExt23 && Nat.Gte(24, zz, PExt)))
+            {
+                if (Nat.AddTo(PExtInv.Length, PExtInv, zz) != 0)
+                {
+                    Nat.IncAt(24, zz, PExtInv.Length);
+                }
+            }
+        }
+
+        public static void AddOne(uint[] x, uint[] z)
+        {
+            uint c = Nat.Inc(12, x, z);
+            if (c != 0 || (z[11] == P11 && Nat.Gte(12, z, P)))
+            {
+                AddPInvTo(z);
+            }
+        }
+
+        public static uint[] FromBigInteger(BigInteger x)
+        {
+            uint[] z = Nat.FromBigInteger(384, x);
+            if (z[11] == P11 && Nat.Gte(12, z, P))
+            {
+                Nat.SubFrom(12, P, z);
+            }
+            return z;
+        }
+
+        public static void Half(uint[] x, uint[] z)
+        {
+            if ((x[0] & 1) == 0)
+            {
+                Nat.ShiftDownBit(12, x, 0, z);
+            }
+            else
+            {
+                uint c = Nat.Add(12, x, P, z);
+                Nat.ShiftDownBit(12, z, c);
+            }
+        }
+
+        public static void Inv(uint[] x, uint[] z)
+        {
+            Mod.CheckedModOddInverse(P, x, z);
+        }
+
+        public static int IsZero(uint[] x)
+        {
+            uint d = 0;
+            for (int i = 0; i < 12; ++i)
+            {
+                d |= x[i];
+            }
+            d = (d >> 1) | (d & 1);
+            return ((int)d - 1) >> 31;
+        }
+
+        public static void Multiply(uint[] x, uint[] y, uint[] z)
+        {
+            uint[] tt = Nat.Create(24);
+            Nat384.Mul(x, y, tt);
+            Reduce(tt, z);
+        }
+
+        public static void Multiply(uint[] x, uint[] y, uint[] z, uint[] tt)
+        {
+            Nat384.Mul(x, y, tt);
+            Reduce(tt, z);
+        }
+
+        public static void Negate(uint[] x, uint[] z)
+        {
+            if (0 != IsZero(x))
+            {
+                Nat.Sub(12, P, P, z);
+            }
+            else
+            {
+                Nat.Sub(12, P, x, z);
+            }
+        }
+
+        public static void Random(SecureRandom r, uint[] z)
+        {
+            byte[] bb = new byte[12 * 4];
+            do
+            {
+                r.NextBytes(bb);
+                Pack.LE_To_UInt32(bb, 0, z, 0, 12);
+            }
+            while (0 == Nat.LessThan(12, z, P));
+        }
+
+        public static void RandomMult(SecureRandom r, uint[] z)
+        {
+            do
+            {
+                Random(r, z);
+            }
+            while (0 != IsZero(z));
+        }
+
+        public static void Reduce(uint[] xx, uint[] z)
+        {
+            long xx16 = xx[16], xx17 = xx[17], xx18 = xx[18], xx19 = xx[19];
+            long xx20 = xx[20], xx21 = xx[21], xx22 = xx[22], xx23 = xx[23];
+
+            const long n = 1;
+
+            long t0 = (long)xx[12] + xx20 - n;
+            long t1 = (long)xx[13] + xx22;
+            long t2 = (long)xx[14] + xx22 + xx23;
+            long t3 = (long)xx[15] + xx23;
+            long t4 = xx17 + xx21;
+            long t5 = xx21 - xx23;
+            long t6 = xx22 - xx23;
+            long t7 = t0 + t5;
+
+            long cc = 0;
+            cc += (long)xx[0] + t7;
+            z[0] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[1] + xx23 - t0 + t1;
+            z[1] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[2] - xx21 - t1 + t2;
+            z[2] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[3] - t2 + t3 + t7;
+            z[3] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[4] + xx16 + xx21 + t1 - t3 + t7;
+            z[4] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[5] - xx16 + t1 + t2 + t4;
+            z[5] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[6] + xx18 - xx17 + t2 + t3;
+            z[6] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[7] + xx16 + xx19 - xx18 + t3;
+            z[7] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[8] + xx16 + xx17 + xx20 - xx19;
+            z[8] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[9] + xx18 - xx20 + t4;
+            z[9] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[10] + xx18 + xx19 - t5 + t6;
+            z[10] = (uint)cc;
+            cc >>= 32;
+            cc += (long)xx[11] + xx19 + xx20 - t6;
+            z[11] = (uint)cc;
+            cc >>= 32;
+            cc += n;
+
+            Debug.Assert(cc >= 0);
+
+            Reduce32((uint)cc, z);
+        }
+
+        public static void Reduce32(uint x, uint[] z)
+        {
+            long cc = 0;
+
+            if (x != 0)
+            {
+                long xx12 = x;
+
+                cc += (long)z[0] + xx12;
+                z[0] = (uint)cc;
+                cc >>= 32;
+                cc += (long)z[1] - xx12;
+                z[1] = (uint)cc;
+                cc >>= 32;
+                if (cc != 0)
+                {
+                    cc += (long)z[2];
+                    z[2] = (uint)cc;
+                    cc >>= 32;
+                }
+                cc += (long)z[3] + xx12;
+                z[3] = (uint)cc;
+                cc >>= 32;
+                cc += (long)z[4] + xx12;
+                z[4] = (uint)cc;
+                cc >>= 32;
+
+                Debug.Assert(cc == 0 || cc == 1);
+            }
+
+            if ((cc != 0 && Nat.IncAt(12, z, 5) != 0)
+                || (z[11] == P11 && Nat.Gte(12, z, P)))
+            {
+                AddPInvTo(z);
+            }
+        }
+
+        public static void Square(uint[] x, uint[] z)
+        {
+            uint[] tt = Nat.Create(24);
+            Nat384.Square(x, tt);
+            Reduce(tt, z);
+        }
+
+        public static void Square(uint[] x, uint[] z, uint[] tt)
+        {
+            Nat384.Square(x, tt);
+            Reduce(tt, z);
+        }
+
+        public static void SquareN(uint[] x, int n, uint[] z)
+        {
+            Debug.Assert(n > 0);
+
+            uint[] tt = Nat.Create(24);
+            Nat384.Square(x, tt);
+            Reduce(tt, z);
+
+            while (--n > 0)
+            {
+                Nat384.Square(z, tt);
+                Reduce(tt, z);
+            }
+        }
+
+        public static void SquareN(uint[] x, int n, uint[] z, uint[] tt)
+        {
+            Debug.Assert(n > 0);
+
+            Nat384.Square(x, tt);
+            Reduce(tt, z);
+
+            while (--n > 0)
+            {
+                Nat384.Square(z, tt);
+                Reduce(tt, z);
+            }
+        }
+
+        public static void Subtract(uint[] x, uint[] y, uint[] z)
+        {
+            int c = Nat.Sub(12, x, y, z);
+            if (c != 0)
+            {
+                SubPInvFrom(z);
+            }
+        }
+
+        public static void SubtractExt(uint[] xx, uint[] yy, uint[] zz)
+        {
+            int c = Nat.Sub(24, xx, yy, zz);
+            if (c != 0)
+            {
+                if (Nat.SubFrom(PExtInv.Length, PExtInv, zz) != 0)
+                {
+                    Nat.DecAt(24, zz, PExtInv.Length);
+                }
+            }
+        }
+
+        public static void Twice(uint[] x, uint[] z)
+        {
+            uint c = Nat.ShiftUpBit(12, x, 0, z);
+            if (c != 0 || (z[11] == P11 && Nat.Gte(12, z, P)))
+            {
+                AddPInvTo(z);
+            }
+        }
+
+        private static void AddPInvTo(uint[] z)
+        {
+            long c = (long)z[0] + 1;
+            z[0] = (uint)c;
+            c >>= 32;
+            c += (long)z[1] - 1;
+            z[1] = (uint)c;
+            c >>= 32;
+            if (c != 0)
+            {
+                c += (long)z[2];
+                z[2] = (uint)c;
+                c >>= 32;
+            }
+            c += (long)z[3] + 1;
+            z[3] = (uint)c;
+            c >>= 32;
+            c += (long)z[4] + 1;
+            z[4] = (uint)c;
+            c >>= 32;
+            if (c != 0)
+            {
+                Nat.IncAt(12, z, 5);
+            }
+        }
+
+        private static void SubPInvFrom(uint[] z)
+        {
+            long c = (long)z[0] - 1;
+            z[0] = (uint)c;
+            c >>= 32;
+            c += (long)z[1] + 1;
+            z[1] = (uint)c;
+            c >>= 32;
+            if (c != 0)
+            {
+                c += (long)z[2];
+                z[2] = (uint)c;
+                c >>= 32;
+            }
+            c += (long)z[3] - 1;
+            z[3] = (uint)c;
+            c >>= 32;
+            c += (long)z[4] - 1;
+            z[4] = (uint)c;
+            c >>= 32;
+            if (c != 0)
+            {
+                Nat.DecAt(12, z, 5);
+            }
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP384R1Field.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: fe192fdf195378545a78c6ed2bf23b78
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP384R1FieldElement.cs

@@ -0,0 +1,216 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities.Encoders;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP384R1FieldElement
+        : AbstractFpFieldElement
+    {
+        public static readonly BigInteger Q = new BigInteger(1,
+            Hex.DecodeStrict("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFF0000000000000000FFFFFFFF"));
+
+        protected internal readonly uint[] x;
+
+        public SecP384R1FieldElement(BigInteger x)
+        {
+            if (x == null || x.SignValue < 0 || x.CompareTo(Q) >= 0)
+                throw new ArgumentException("value invalid for SecP384R1FieldElement", "x");
+
+            this.x = SecP384R1Field.FromBigInteger(x);
+        }
+
+        public SecP384R1FieldElement()
+        {
+            this.x = Nat.Create(12);
+        }
+
+        protected internal SecP384R1FieldElement(uint[] x)
+        {
+            this.x = x;
+        }
+
+        public override bool IsZero
+        {
+            get { return Nat.IsZero(12, x); }
+        }
+
+        public override bool IsOne
+        {
+            get { return Nat.IsOne(12, x); }
+        }
+
+        public override bool TestBitZero()
+        {
+            return Nat.GetBit(x, 0) == 1;
+        }
+
+        public override BigInteger ToBigInteger()
+        {
+            return Nat.ToBigInteger(12, x);
+        }
+
+        public override string FieldName
+        {
+            get { return "SecP384R1Field"; }
+        }
+
+        public override int FieldSize
+        {
+            get { return Q.BitLength; }
+        }
+
+        public override ECFieldElement Add(ECFieldElement b)
+        {
+            uint[] z = Nat.Create(12);
+            SecP384R1Field.Add(x, ((SecP384R1FieldElement)b).x, z);
+            return new SecP384R1FieldElement(z);
+        }
+
+        public override ECFieldElement AddOne()
+        {
+            uint[] z = Nat.Create(12);
+            SecP384R1Field.AddOne(x, z);
+            return new SecP384R1FieldElement(z);
+        }
+
+        public override ECFieldElement Subtract(ECFieldElement b)
+        {
+            uint[] z = Nat.Create(12);
+            SecP384R1Field.Subtract(x, ((SecP384R1FieldElement)b).x, z);
+            return new SecP384R1FieldElement(z);
+        }
+
+        public override ECFieldElement Multiply(ECFieldElement b)
+        {
+            uint[] z = Nat.Create(12);
+            SecP384R1Field.Multiply(x, ((SecP384R1FieldElement)b).x, z);
+            return new SecP384R1FieldElement(z);
+        }
+
+        public override ECFieldElement Divide(ECFieldElement b)
+        {
+            //return Multiply(b.Invert());
+            uint[] z = Nat.Create(12);
+            SecP384R1Field.Inv(((SecP384R1FieldElement)b).x, z);
+            SecP384R1Field.Multiply(z, x, z);
+            return new SecP384R1FieldElement(z);
+        }
+
+        public override ECFieldElement Negate()
+        {
+            uint[] z = Nat.Create(12);
+            SecP384R1Field.Negate(x, z);
+            return new SecP384R1FieldElement(z);
+        }
+
+        public override ECFieldElement Square()
+        {
+            uint[] z = Nat.Create(12);
+            SecP384R1Field.Square(x, z);
+            return new SecP384R1FieldElement(z);
+        }
+
+        public override ECFieldElement Invert()
+        {
+            uint[] z = Nat.Create(12);
+            SecP384R1Field.Inv(x, z);
+            return new SecP384R1FieldElement(z);
+        }
+
+        /**
+         * return a sqrt root - the routine verifies that the calculation returns the right value - if
+         * none exists it returns null.
+         */
+        public override ECFieldElement Sqrt()
+        {
+            // Raise this element to the exponent 2^382 - 2^126 - 2^94 + 2^30
+
+            uint[] x1 = this.x;
+            if (Nat.IsZero(12, x1) || Nat.IsOne(12, x1))
+                return this;
+
+            uint[] tt0 = Nat.Create(24);
+            uint[] t1 = Nat.Create(12);
+            uint[] t2 = Nat.Create(12);
+            uint[] t3 = Nat.Create(12);
+            uint[] t4 = Nat.Create(12);
+
+            SecP384R1Field.Square(x1, t1, tt0);
+            SecP384R1Field.Multiply(t1, x1, t1, tt0);
+
+            SecP384R1Field.SquareN(t1, 2, t2, tt0);
+            SecP384R1Field.Multiply(t2, t1, t2, tt0);
+
+            SecP384R1Field.Square(t2, t2, tt0);
+            SecP384R1Field.Multiply(t2, x1, t2, tt0);
+
+            SecP384R1Field.SquareN(t2, 5, t3, tt0);
+            SecP384R1Field.Multiply(t3, t2, t3, tt0);
+
+            SecP384R1Field.SquareN(t3, 5, t4, tt0);
+            SecP384R1Field.Multiply(t4, t2, t4, tt0);
+
+            SecP384R1Field.SquareN(t4, 15, t2, tt0);
+            SecP384R1Field.Multiply(t2, t4, t2, tt0);
+
+            SecP384R1Field.SquareN(t2, 2, t3, tt0);
+            SecP384R1Field.Multiply(t1, t3, t1, tt0);
+
+            SecP384R1Field.SquareN(t3, 28, t3, tt0);
+            SecP384R1Field.Multiply(t2, t3, t2, tt0);
+
+            SecP384R1Field.SquareN(t2, 60, t3, tt0);
+            SecP384R1Field.Multiply(t3, t2, t3, tt0);
+
+            uint[] r = t2;
+
+            SecP384R1Field.SquareN(t3, 120, r, tt0);
+            SecP384R1Field.Multiply(r, t3, r, tt0);
+
+            SecP384R1Field.SquareN(r, 15, r, tt0);
+            SecP384R1Field.Multiply(r, t4, r, tt0);
+
+            SecP384R1Field.SquareN(r, 33, r, tt0);
+            SecP384R1Field.Multiply(r, t1, r, tt0);
+
+            SecP384R1Field.SquareN(r, 64, r, tt0);
+            SecP384R1Field.Multiply(r, x1, r, tt0);
+
+            SecP384R1Field.SquareN(r, 30, t1, tt0);
+            SecP384R1Field.Square(t1, t2, tt0);
+
+            return Nat.Eq(12, x1, t2) ? new SecP384R1FieldElement(t1) : null;
+        }
+
+        public override bool Equals(object obj)
+        {
+            return Equals(obj as SecP384R1FieldElement);
+        }
+
+        public override bool Equals(ECFieldElement other)
+        {
+            return Equals(other as SecP384R1FieldElement);
+        }
+
+        public virtual bool Equals(SecP384R1FieldElement other)
+        {
+            if (this == other)
+                return true;
+            if (null == other)
+                return false;
+            return Nat.Eq(12, x, other.x);
+        }
+
+        public override int GetHashCode()
+        {
+            return Q.GetHashCode() ^ Arrays.GetHashCode(x, 0, 12);
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP384R1FieldElement.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 5f6d8e1f2882f3a459dfd2da3a9dd21b
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP384R1Point.cs

@@ -0,0 +1,252 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP384R1Point
+        : AbstractFpPoint
+    {
+        internal SecP384R1Point(ECCurve curve, ECFieldElement x, ECFieldElement y)
+            : base(curve, x, y)
+        {
+        }
+
+        internal SecP384R1Point(ECCurve curve, ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)
+            : base(curve, x, y, zs)
+        {
+        }
+
+        protected override ECPoint Detach()
+        {
+            return new SecP384R1Point(null, AffineXCoord, AffineYCoord);
+        }
+
+        public override ECPoint Add(ECPoint b)
+        {
+            if (this.IsInfinity)
+                return b;
+            if (b.IsInfinity)
+                return this;
+            if (this == b)
+                return Twice();
+
+            ECCurve curve = this.Curve;
+
+            SecP384R1FieldElement X1 = (SecP384R1FieldElement)this.RawXCoord, Y1 = (SecP384R1FieldElement)this.RawYCoord;
+            SecP384R1FieldElement X2 = (SecP384R1FieldElement)b.RawXCoord, Y2 = (SecP384R1FieldElement)b.RawYCoord;
+
+            SecP384R1FieldElement Z1 = (SecP384R1FieldElement)this.RawZCoords[0];
+            SecP384R1FieldElement Z2 = (SecP384R1FieldElement)b.RawZCoords[0];
+
+            uint c;
+            uint[] tt0 = Nat.Create(24);
+            uint[] tt1 = Nat.Create(24);
+            uint[] tt2 = Nat.Create(24);
+            uint[] t3 = Nat.Create(12);
+            uint[] t4 = Nat.Create(12);
+
+            bool Z1IsOne = Z1.IsOne;
+            uint[] U2, S2;
+            if (Z1IsOne)
+            {
+                U2 = X2.x;
+                S2 = Y2.x;
+            }
+            else
+            {
+                S2 = t3;
+                SecP384R1Field.Square(Z1.x, S2, tt0);
+
+                U2 = tt2;
+                SecP384R1Field.Multiply(S2, X2.x, U2, tt0);
+
+                SecP384R1Field.Multiply(S2, Z1.x, S2, tt0);
+                SecP384R1Field.Multiply(S2, Y2.x, S2, tt0);
+            }
+
+            bool Z2IsOne = Z2.IsOne;
+            uint[] U1, S1;
+            if (Z2IsOne)
+            {
+                U1 = X1.x;
+                S1 = Y1.x;
+            }
+            else
+            {
+                S1 = t4;
+                SecP384R1Field.Square(Z2.x, S1, tt0);
+
+                U1 = tt1;
+                SecP384R1Field.Multiply(S1, X1.x, U1, tt0);
+
+                SecP384R1Field.Multiply(S1, Z2.x, S1, tt0);
+                SecP384R1Field.Multiply(S1, Y1.x, S1, tt0);
+            }
+
+            uint[] H = Nat.Create(12);
+            SecP384R1Field.Subtract(U1, U2, H);
+
+            uint[] R = Nat.Create(12);
+            SecP384R1Field.Subtract(S1, S2, R);
+
+            // Check if b == this or b == -this
+            if (Nat.IsZero(12, H))
+            {
+                if (Nat.IsZero(12, R))
+                {
+                    // this == b, i.e. this must be doubled
+                    return this.Twice();
+                }
+
+                // this == -b, i.e. the result is the point at infinity
+                return curve.Infinity;
+            }
+
+            uint[] HSquared = t3;
+            SecP384R1Field.Square(H, HSquared, tt0);
+
+            uint[] G = Nat.Create(12);
+            SecP384R1Field.Multiply(HSquared, H, G, tt0);
+
+            uint[] V = t3;
+            SecP384R1Field.Multiply(HSquared, U1, V, tt0);
+
+            SecP384R1Field.Negate(G, G);
+            Nat384.Mul(S1, G, tt1);
+
+            c = Nat.AddBothTo(12, V, V, G);
+            SecP384R1Field.Reduce32(c, G);
+
+            SecP384R1FieldElement X3 = new SecP384R1FieldElement(t4);
+            SecP384R1Field.Square(R, X3.x, tt0);
+            SecP384R1Field.Subtract(X3.x, G, X3.x);
+
+            SecP384R1FieldElement Y3 = new SecP384R1FieldElement(G);
+            SecP384R1Field.Subtract(V, X3.x, Y3.x);
+            Nat384.Mul(Y3.x, R, tt2);
+            SecP384R1Field.AddExt(tt1, tt2, tt1);
+            SecP384R1Field.Reduce(tt1, Y3.x);
+
+            SecP384R1FieldElement Z3 = new SecP384R1FieldElement(H);
+            if (!Z1IsOne)
+            {
+                SecP384R1Field.Multiply(Z3.x, Z1.x, Z3.x, tt0);
+            }
+            if (!Z2IsOne)
+            {
+                SecP384R1Field.Multiply(Z3.x, Z2.x, Z3.x, tt0);
+            }
+
+            ECFieldElement[] zs = new ECFieldElement[] { Z3 };
+
+            return new SecP384R1Point(curve, X3, Y3, zs);
+        }
+
+        public override ECPoint Twice()
+        {
+            if (this.IsInfinity)
+                return this;
+
+            ECCurve curve = this.Curve;
+
+            SecP384R1FieldElement Y1 = (SecP384R1FieldElement)this.RawYCoord;
+            if (Y1.IsZero)
+                return curve.Infinity;
+
+            SecP384R1FieldElement X1 = (SecP384R1FieldElement)this.RawXCoord, Z1 = (SecP384R1FieldElement)this.RawZCoords[0];
+
+            uint c;
+            uint[] tt0 = Nat.Create(24);
+            uint[] t1 = Nat.Create(12);
+            uint[] t2 = Nat.Create(12);
+
+            uint[] Y1Squared = Nat.Create(12);
+            SecP384R1Field.Square(Y1.x, Y1Squared, tt0);
+
+            uint[] T = Nat.Create(12);
+            SecP384R1Field.Square(Y1Squared, T, tt0);
+
+            bool Z1IsOne = Z1.IsOne;
+
+            uint[] Z1Squared = Z1.x;
+            if (!Z1IsOne)
+            {
+                Z1Squared = t2;
+                SecP384R1Field.Square(Z1.x, Z1Squared, tt0);
+            }
+
+            SecP384R1Field.Subtract(X1.x, Z1Squared, t1);
+
+            uint[] M = t2;
+            SecP384R1Field.Add(X1.x, Z1Squared, M);
+            SecP384R1Field.Multiply(M, t1, M, tt0);
+            c = Nat.AddBothTo(12, M, M, M);
+            SecP384R1Field.Reduce32(c, M);
+
+            uint[] S = Y1Squared;
+            SecP384R1Field.Multiply(Y1Squared, X1.x, S, tt0);
+            c = Nat.ShiftUpBits(12, S, 2, 0);
+            SecP384R1Field.Reduce32(c, S);
+
+            c = Nat.ShiftUpBits(12, T, 3, 0, t1);
+            SecP384R1Field.Reduce32(c, t1);
+
+            SecP384R1FieldElement X3 = new SecP384R1FieldElement(T);
+            SecP384R1Field.Square(M, X3.x, tt0);
+            SecP384R1Field.Subtract(X3.x, S, X3.x);
+            SecP384R1Field.Subtract(X3.x, S, X3.x);
+
+            SecP384R1FieldElement Y3 = new SecP384R1FieldElement(S);
+            SecP384R1Field.Subtract(S, X3.x, Y3.x);
+            SecP384R1Field.Multiply(Y3.x, M, Y3.x, tt0);
+            SecP384R1Field.Subtract(Y3.x, t1, Y3.x);
+
+            SecP384R1FieldElement Z3 = new SecP384R1FieldElement(M);
+            SecP384R1Field.Twice(Y1.x, Z3.x);
+            if (!Z1IsOne)
+            {
+                SecP384R1Field.Multiply(Z3.x, Z1.x, Z3.x, tt0);
+            }
+
+            return new SecP384R1Point(curve, X3, Y3, new ECFieldElement[] { Z3 });
+        }
+
+        public override ECPoint TwicePlus(ECPoint b)
+        {
+            if (this == b)
+                return ThreeTimes();
+            if (this.IsInfinity)
+                return b;
+            if (b.IsInfinity)
+                return Twice();
+
+            ECFieldElement Y1 = this.RawYCoord;
+            if (Y1.IsZero)
+                return b;
+
+            return Twice().Add(b);
+        }
+
+        public override ECPoint ThreeTimes()
+        {
+            if (this.IsInfinity || this.RawYCoord.IsZero)
+                return this;
+
+            // NOTE: Be careful about recursions between TwicePlus and ThreeTimes
+            return Twice().Add(this);
+        }
+
+        public override ECPoint Negate()
+        {
+            if (IsInfinity)
+                return this;
+
+            return new SecP384R1Point(Curve, RawXCoord, RawYCoord.Negate(), RawZCoords);
+        }
+    }
+}
+#pragma warning restore
+#endif

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP384R1Point.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 32d0493feac8f2d4188dcdcf83da34ca
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/math/ec/custom/sec/SecP521R1Curve.cs

@@ -0,0 +1,174 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.Raw;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities.Encoders;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Custom.Sec
+{
+    internal class SecP521R1Curve
+        : AbstractFpCurve
+    {
+        public static readonly BigInteger q = SecP521R1FieldElement.Q;
+
+        private const int SECP521R1_DEFAULT_COORDS = COORD_JACOBIAN;
+        private const int SECP521R1_FE_INTS = 17;
+        private static readonly ECFieldElement[] SECP521R1_AFFINE_ZS = new ECFieldElement[] { new SecP521R1FieldElement(BigInteger.One) };
+
+        protected readonly SecP521R1Point m_infinity;
+
+        public SecP521R1Curve()
+            : base(q)
+        {
+            this.m_infinity = new SecP521R1Point(this, null, null);
+
+            this.m_a = FromBigInteger(new BigInteger(1,
+                Hex.DecodeStrict("01FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFC")));
+            this.m_b = FromBigInteger(new BigInteger(1,
+                Hex.DecodeStrict("0051953EB9618E1C9A1F929A21A0B68540EEA2DA725B99B315F3B8B489918EF109E156193951EC7E937B1652C0BD3BB1BF073573DF883D2C34F1EF451FD46B503F00")));
+            this.m_order = new BigInteger(1, Hex.DecodeStrict("01FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFA51868783BF2F966B7FCC0148F709A5D03BB5C9B8899C47AEBB6FB71E91386409"));
+            this.m_cofactor = BigInteger.One;
+            this.m_coord = SECP521R1_DEFAULT_COORDS;
+        }
+
+        protected override ECCurve CloneCurve()
+        {
+            return new SecP521R1Curve();
+        }
+
+        public override bool SupportsCoordinateSystem(int coord)
+        {
+            switch (coord)
+            {
+                case COORD_JACOBIAN:
+                    return true;
+                default:
+                    return false;
+            }
+        }
+
+        public virtual BigInteger Q
+        {
+            get { return q; }
+        }
+
+        public override ECPoint Infinity
+        {
+            get { return m_infinity; }
+        }
+
+        public override int FieldSize
+        {
+            get { return q.BitLength; }
+        }
+
+        public override ECFieldElement FromBigInteger(BigInteger x)
+        {
+            return new SecP521R1FieldElement(x);
+        }
+
+        protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y)
+        {
+            return new SecP521R1Point(this, x, y);
+        }
+
+        protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)
+        {
+            return new SecP521R1Point(this, x, y, zs);
+        }
+
+        public override ECLookupTable CreateCacheSafeLookupTable(ECPoint[] points, int off, int len)
+        {
+            uint[] table = new uint[len * SECP521R1_FE_INTS * 2];
+            {
+                int pos = 0;
+                for (int i = 0; i < len; ++i)
+                {
+                    ECPoint p = points[off + i];
+                    Nat.Copy(SECP521R1_FE_INTS, ((SecP521R1FieldElement)p.RawXCoord).x, 0, table, pos); pos += SECP521R1_FE_INTS;
+                    Nat.Copy(SECP521R1_FE_INTS, ((SecP521R1FieldElement)p.RawYCoord).x, 0, table, pos); pos += SECP521R1_FE_INTS;
+                }
+            }
+
+            return new SecP521R1LookupTable(this, table, len);
+        }
+
+        public override ECFieldElement RandomFieldElement(SecureRandom r)
+        {
+            uint[] x = Nat.Create(17);
+            SecP521R1Field.Random(r, x);
+            return new SecP521R1FieldElement(x);
+        }
+
+        public override ECFieldElement RandomFieldElementMult(SecureRandom r)
+        {
+            uint[] x = Nat.Create(17);
+            SecP521R1Field.RandomMult(r, x);
+            return new SecP521R1FieldElement(x);
+        }
+
+        private class SecP521R1LookupTable
+            : AbstractECLookupTable
+        {
+            private readonly SecP521R1Curve m_outer;
+            private readonly uint[] m_table;
+            private readonly int m_size;
+
+            internal SecP521R1LookupTable(SecP521R1Curve outer, uint[] table, int size)
+            {
+                this.m_outer = outer;
+                this.m_table = table;
+                this.m_size = size;
+            }
+
+            public override int Size
+            {
+                get { return m_size; }
+            }
+
+            public override ECPoint Lookup(int index)
+            {
+                uint[] x = Nat.Create(SECP521R1_FE_INTS), y = Nat.Create(SECP521R1_FE_INTS);
+                int pos = 0;
+
+                for (int i = 0; i < m_size; ++i)
+                {
+                    uint MASK = (uint)(((i ^ index) - 1) >> 31);
+
+                    for (int j = 0; j < SECP521R1_FE_INTS; ++j)
+                    {
+                        x[j] ^= m_table[pos + j] & MASK;
+                        y[j] ^= m_table[pos + SECP521R1_FE_INTS + j] & MASK;
+                    }
+
+                    pos += (SECP521R1_FE_INTS * 2);
+                }
+
+                return CreatePoint(x, y);
+            }
+
+            public override ECPoint LookupVar(int index)
+            {
+                uint[] x = Nat.Create(SECP521R1_FE_INTS), y = Nat.Create(SECP521R1_FE_INTS);
+                int pos = index * SECP521R1_FE_INTS * 2;
+
+                for (int j = 0; j < SECP521R1_FE_INTS; ++j)
+                {
+                    x[j] = m_table[pos + j];
+                    y[j] = m_table[pos + SECP521R1_FE_INTS + j];
+                }
+
+                return CreatePoint(x, y);
+            }
+
+            private ECPoint CreatePoint(uint[] x, uint[] y)
+            {
+                return m_outer.CreateRawPoint(new SecP521R1FieldElement(x), new SecP521R1FieldElement(y), SECP521R1_AFFINE_ZS);
+            }
+        }
+    }
+}
+#pragma warning restore
+#endif