add all

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/crypto/prng/X931SecureRandom.cs

@@ -0,0 +1,104 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto.Prng
+{
+    public class X931SecureRandom
+        :   SecureRandom
+    {
+        private readonly bool           mPredictionResistant;
+        private readonly SecureRandom   mRandomSource;
+        private readonly X931Rng        mDrbg;
+
+        internal X931SecureRandom(SecureRandom randomSource, X931Rng drbg, bool predictionResistant)
+            : base(null)
+        {
+            this.mRandomSource = randomSource;
+            this.mDrbg = drbg;
+            this.mPredictionResistant = predictionResistant;
+        }
+
+        public override void SetSeed(byte[] seed)
+        {
+            lock (this)
+            {
+                if (mRandomSource != null)
+                {
+                    this.mRandomSource.SetSeed(seed);
+                }
+            }
+        }
+
+#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER || UNITY_2021_2_OR_NEWER
+        public override void SetSeed(Span<byte> seed)
+        {
+            lock (this)
+            {
+                if (mRandomSource != null)
+                {
+                    this.mRandomSource.SetSeed(seed);
+                }
+            }
+        }
+#endif
+
+        public override void SetSeed(long seed)
+        {
+            lock (this)
+            {
+                // this will happen when SecureRandom() is created
+                if (mRandomSource != null)
+                {
+                    this.mRandomSource.SetSeed(seed);
+                }
+            }
+        }
+
+        public override void NextBytes(byte[] bytes)
+        {
+            NextBytes(bytes, 0, bytes.Length);
+        }
+
+        public override void NextBytes(byte[] buf, int off, int len)
+        {
+#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER || UNITY_2021_2_OR_NEWER
+            NextBytes(buf.AsSpan(off, len));
+#else
+            lock (this)
+            {
+                // check if a reseed is required...
+                if (mDrbg.Generate(buf, off, len, mPredictionResistant) < 0)
+                {
+                    mDrbg.Reseed();
+                    mDrbg.Generate(buf, off, len, mPredictionResistant);
+                }
+            }
+#endif
+        }
+
+#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER || UNITY_2021_2_OR_NEWER
+        public override void NextBytes(Span<byte> buffer)
+        {
+            lock (this)
+            {
+                // check if a reseed is required...
+                if (mDrbg.Generate(buffer, mPredictionResistant) < 0)
+                {
+                    mDrbg.Reseed();
+                    mDrbg.Generate(buffer, mPredictionResistant);
+                }
+            }
+        }
+#endif
+
+        public override byte[] GenerateSeed(int numBytes)
+        {
+            return EntropyUtilities.GenerateSeed(mDrbg.EntropySource, numBytes);
+        }
+    }
+}
+#pragma warning restore
+#endif