add all

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/crypto/paddings/Pkcs7Padding.cs

@@ -0,0 +1,98 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto;
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto.Paddings
+{
+    /**
+    * A padder that adds Pkcs7/Pkcs5 padding to a block.
+    */
+    public class Pkcs7Padding
+        : IBlockCipherPadding
+    {
+        /**
+        * Initialise the padder.
+        *
+        * @param random - a SecureRandom if available.
+        */
+        public void Init(
+            SecureRandom random)
+        {
+            // nothing to do.
+        }
+
+        /**
+        * Return the name of the algorithm the cipher implements.
+        *
+        * @return the name of the algorithm the cipher implements.
+        */
+        public string PaddingName
+        {
+            get { return "PKCS7"; }
+        }
+
+        public int AddPadding(byte[] input, int inOff)
+        {
+            int count = input.Length - inOff;
+            byte padValue = (byte)count;
+
+            while (inOff < input.Length)
+            {
+                input[inOff++] = padValue;
+            }
+
+            return count;
+        }
+
+#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER || UNITY_2021_2_OR_NEWER
+        public int AddPadding(Span<byte> block, int position)
+        {
+            int count = block.Length - position;
+            byte padValue = (byte)count;
+            block[position..].Fill(padValue);
+            return count;
+        }
+#endif
+
+        public int PadCount(byte[] input)
+        {
+            byte padValue = input[input.Length - 1];
+            int count = padValue;
+            int position = input.Length - count;
+
+            int failed = (position | (count - 1)) >> 31;
+            for (int i = 0; i < input.Length; ++i)
+            {
+                failed |= (input[i] ^ padValue) & ~((i - position) >> 31);
+            }
+            if (failed != 0)
+                throw new InvalidCipherTextException("pad block corrupted");
+
+            return count;
+        }
+
+#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER || UNITY_2021_2_OR_NEWER
+        public int PadCount(ReadOnlySpan<byte> block)
+        {
+            byte padValue = block[block.Length - 1];
+            int count = padValue;
+            int position = block.Length - count;
+
+            int failed = (position | (count - 1)) >> 31;
+            for (int i = 0; i < block.Length; ++i)
+            {
+                failed |= (block[i] ^ padValue) & ~((i - position) >> 31);
+            }
+            if (failed != 0)
+                throw new InvalidCipherTextException("pad block corrupted");
+
+            return count;
+        }
+#endif
+    }
+}
+#pragma warning restore
+#endif