Remove RIPEMD160, SHA1 and SHA256 classes.

[NovacoinLibrary.git] / Novacoin / Hash160.cs

diff --git a/Novacoin/Hash160.cs b/Novacoin/Hash160.cs
index 6aa9048..f95165b 100644 (file)
--- a/Novacoin/Hash160.cs
+++ b/Novacoin/Hash160.cs
@@ -1,19 +1,62 @@
-\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 : Hash
+    /// <summary>
+    /// Representation of pubkey/script hash.
+    /// </summary>
+    public class Hash160 : Hash
        {
+        /// <summary>
+        /// Computes RIPEMD160 hash using managed library
+        /// </summary>
+        //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
         {
-            get { return 20; }
+            get { return _hasher160.GetDigestSize(); }
+        }
+
+        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)
+        {
+            var dataBytes = inputBytes.ToArray();
+
+                       var digest1 = new byte[_hasher256.GetDigestSize()];
+                       var digest2 = new byte[_hasher160.GetDigestSize()];
+
+            _hasher256.BlockUpdate(dataBytes, 0, dataBytes.Length);
+            _hasher256.DoFinal(digest1, 0);
+            _hasher160.BlockUpdate(digest1, 0, digest1.Length);
+            _hasher160.DoFinal(digest2, 0);
+
+            return new Hash160(digest2);
         }
        }
 }