Remove RIPEMD160, SHA1 and SHA256 classes.

[NovacoinLibrary.git] / Novacoin / Hash160.cs

diff --git a/Novacoin/Hash160.cs b/Novacoin/Hash160.cs
index eb4e9e4..f95165b 100644 (file)
--- a/Novacoin/Hash160.cs
+++ b/Novacoin/Hash160.cs
@@ -1,54 +1,63 @@
-\feffusing System;
-using System.Collections.Generic;
-using System.Text;
+\feff/**
+ *  Novacoin classes library
+ *  Copyright (C) 2015 Alex D. (balthazar.ad@gmail.com)
+
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as
+ *  published by the Free Software Foundation, either version 3 of the
+ *  License, or (at your option) any later version.
+
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 using System.Linq;
+using Org.BouncyCastle.Crypto.Digests;
 
 namespace Novacoin
 {
-       /// <summary>
-       /// Representation of pubkey/script hash.
-       /// </summary>
-       public class Hash160
+    /// <summary>
+    /// Representation of pubkey/script hash.
+    /// </summary>
+    public class Hash160 : Hash
        {
-        // 20 bytes
-        const int hashSize = 20;
-
-               /// <summary>
-               /// Array of digest bytes.
-               /// </summary>
-        private byte[] hashBytes = new byte[hashSize];
-
-               /// <summary>
-               /// Initializes an empty instance of the Hash160 class.
-               /// </summary>
-               public Hash160 ()
-               {
-            hashBytes = Enumerable.Repeat<byte>(0, hashSize).ToArray();
-               }
-
         /// <summary>
-        /// Initializes a new instance of Hash160 class with first 20 bytes from supplied list
+        /// Computes RIPEMD160 hash using managed library
         /// </summary>
-        /// <param name="bytesList">List of bytes</param>
-        public Hash160(IList<byte> bytesList)
+        //private static readonly RIPEMD160Managed _hasher160 = new RIPEMD160Managed();
+
+        private static RipeMD160Digest _hasher160 = new RipeMD160Digest();
+        private static Sha256Digest _hasher256 = new Sha256Digest();
+
+        // 20 bytes
+        public override int hashSize
         {
-            hashBytes = bytesList.Take<byte>(hashSize).ToArray<byte>();
+            get { return _hasher160.GetDigestSize(); }
         }
 
-        public Hash160(byte[] bytesArray)
+        public Hash160() : base() { }
+        public Hash160(byte[] bytes, int offset = 0) : base(bytes, offset) { }
+        public Hash160(Hash160 h) : base(h) { }
+
+        public static Hash160 Compute160(byte[] inputBytes)
         {
-            hashBytes = bytesArray;
-        }
+            var dataBytes = inputBytes.ToArray();
+
+                       var digest1 = new byte[_hasher256.GetDigestSize()];
+                       var digest2 = new byte[_hasher160.GetDigestSize()];
 
-               public override string ToString()
-               {
-            StringBuilder sb = new StringBuilder(hashSize * 2);
-            foreach (byte b in hashBytes)
-                       {
-                               sb.AppendFormat ("{0:x2}", b);
-                       }
-                       return sb.ToString();
-               }
+            _hasher256.BlockUpdate(dataBytes, 0, dataBytes.Length);
+            _hasher256.DoFinal(digest1, 0);
+            _hasher160.BlockUpdate(digest1, 0, digest1.Length);
+            _hasher160.DoFinal(digest2, 0);
+
+            return new Hash160(digest2);
+        }
        }
 }