X-Git-Url: https://git.novaco.in/?a=blobdiff_plain;f=Novacoin%2FHash160.cs;h=f95165bc4b8fc72ba845311079122e2175e32ea9;hb=1f6b6ffe24de703593f20f5f881a2e797473621c;hp=8a995d5b273ce8e5bacbbda209f27c0e6a3c5870;hpb=b5794452d82d72e14ecfa8fa236654201d271aaa;p=NovacoinLibrary.git

diff --git a/Novacoin/Hash160.cs b/Novacoin/Hash160.cs
index 8a995d5..f95165b 100644
--- a/Novacoin/Hash160.cs
+++ b/Novacoin/Hash160.cs
@@ -1,20 +1,63 @@
-using System;
+/**
+ *  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
 	{
-		/// <summary>
-		/// Array of digest bytes.
-		/// </summary>
-		private byte[] h;
-
-		public Hash160 ()
-		{
-		}
+        /// <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 _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);
+        }
 	}
 }