up

2020-07-09 08:50:24 +08:00
parent 13d25f4707
commit c523462b82
1818 changed files with 174940 additions and 582 deletions
--- a/Assets/BestHTTP/SecureProtocol/crypto/digests/GeneralDigest.cs
+++ b/Assets/BestHTTP/SecureProtocol/crypto/digests/GeneralDigest.cs
@@ -0,0 +1,137 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+
+using System;
+
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Crypto.Digests
+{
+    /**
+    * base implementation of MD4 family style digest as outlined in
+    * "Handbook of Applied Cryptography", pages 344 - 347.
+    */
+    public abstract class GeneralDigest
+		: IDigest, IMemoable
+    {
+        private const int BYTE_LENGTH = 64;
+
+        private byte[]  xBuf;
+        private int     xBufOff;
+
+        private long    byteCount;
+
+        internal GeneralDigest()
+        {
+            xBuf = new byte[4];
+        }
+
+        internal GeneralDigest(GeneralDigest t)
+		{
+			xBuf = new byte[t.xBuf.Length];
+			CopyIn(t);
+		}
+
+		protected void CopyIn(GeneralDigest t)
+		{
+            Array.Copy(t.xBuf, 0, xBuf, 0, t.xBuf.Length);
+
+            xBufOff = t.xBufOff;
+            byteCount = t.byteCount;
+        }
+
+        public void Update(byte input)
+        {
+            xBuf[xBufOff++] = input;
+
+            if (xBufOff == xBuf.Length)
+            {
+                ProcessWord(xBuf, 0);
+                xBufOff = 0;
+            }
+
+            byteCount++;
+        }
+
+        public void BlockUpdate(
+            byte[]  input,
+            int     inOff,
+            int     length)
+        {
+            length = System.Math.Max(0, length);
+
+            //
+            // fill the current word
+            //
+            int i = 0;
+            if (xBufOff != 0)
+            {
+                while (i < length)
+                {
+                    xBuf[xBufOff++] = input[inOff + i++];
+                    if (xBufOff == 4)
+                    {
+                        ProcessWord(xBuf, 0);
+                        xBufOff = 0;
+                        break;
+                    }
+                }
+            }
+
+            //
+            // process whole words.
+            //
+            int limit = ((length - i) & ~3) + i;
+            for (; i < limit; i += 4)
+            {
+                ProcessWord(input, inOff + i);
+            }
+
+            //
+            // load in the remainder.
+            //
+            while (i < length)
+            {
+                xBuf[xBufOff++] = input[inOff + i++];
+            }
+
+            byteCount += length;
+        }
+
+        public void Finish()
+        {
+            long    bitLength = (byteCount << 3);
+
+            //
+            // add the pad bytes.
+            //
+            Update((byte)128);
+
+            while (xBufOff != 0) Update((byte)0);
+            ProcessLength(bitLength);
+            ProcessBlock();
+        }
+
+        public virtual void Reset()
+        {
+            byteCount = 0;
+            xBufOff = 0;
+			Array.Clear(xBuf, 0, xBuf.Length);
+        }
+
+		public int GetByteLength()
+		{
+			return BYTE_LENGTH;
+		}
+
+		internal abstract void ProcessWord(byte[] input, int inOff);
+        internal abstract void ProcessLength(long bitLength);
+        internal abstract void ProcessBlock();
+        public abstract string AlgorithmName { get; }
+		public abstract int GetDigestSize();
+        public abstract int DoFinal(byte[] output, int outOff);
+		public abstract IMemoable Copy();
+		public abstract void Reset(IMemoable t);
+    }
+}
+
+#endif