-\feffusing System;
-using System.Collections.Generic;
-using System.Linq;
+\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;
namespace Novacoin
{
}
public ScryptHash256() : base() { }
- public ScryptHash256(byte[] bytes) : base(bytes) { }
- public ScryptHash256(IEnumerable<byte> bytes) : base(bytes) { }
+ public ScryptHash256(byte[] bytes, int offset = 0) : base(bytes, offset) { }
public ScryptHash256(ScryptHash256 h) : base(h) { }
/// <summary>
/// </summary>
/// <param name="inputBytes">Byte sequence to hash</param>
/// <returns>Hashing result instance</returns>
- public static ScryptHash256 Compute256(IEnumerable<byte> inputBytes)
+ public static ScryptHash256 Compute256(byte[] inputBytes)
{
- uint[] V = new uint[(131072 + 63) / sizeof(uint)];
+ var V = new uint[(131072 + 63) / sizeof(uint)];
- byte[] dataBytes = inputBytes.ToArray();
- byte[] keyBytes1 = CryptoUtils.PBKDF2_Sha256(128, dataBytes, dataBytes, 1);
- uint[] X = Interop.ToUInt32Array(keyBytes1);
+ var keyBytes1 = CryptoUtils.PBKDF2_Sha256(128, (byte[])inputBytes, (byte[])inputBytes, 1);
+ var X = ToUInt32Array(keyBytes1);
- uint i, j, k;
- for (i = 0; i < 1024; i++)
+ for (var i = 0; i < 1024; i++)
{
Array.Copy(X, 0, V, i * 32, 32);
xor_salsa8(ref X, 0, ref X, 16);
xor_salsa8(ref X, 16, ref X, 0);
}
- for (i = 0; i < 1024; i++)
+ for (var i = 0; i < 1024; i++)
{
- j = 32 * (X[16] & 1023);
- for (k = 0; k < 32; k++)
+ var j = 32 * (X[16] & 1023);
+ for (var k = 0; k < 32; k++)
+ {
X[k] ^= V[j + k];
+ }
xor_salsa8(ref X, 0, ref X, 16);
xor_salsa8(ref X, 16, ref X, 0);
}
- byte[] xBytes = Interop.LEBytes(X);
- byte[] keyBytes2 = CryptoUtils.PBKDF2_Sha256(32, dataBytes, xBytes, 1);
+ var xBytes = LEBytes(X);
+ var keyBytes2 = CryptoUtils.PBKDF2_Sha256(32, (byte[])inputBytes, xBytes, 1);
return new ScryptHash256(keyBytes2);
}
B[indexB + 14] += x14;
B[indexB + 15] += x15;
}
+
+ /// <summary>
+ /// Convert array of unsigned integers to array of bytes.
+ /// </summary>
+ /// <param name="values">Array of unsigned integer values.</param>
+ /// <returns>Byte array</returns>
+ private static byte[] LEBytes(uint[] values)
+ {
+ var result = new byte[values.Length * sizeof(uint)];
+ Buffer.BlockCopy(values, 0, result, 0, result.Length);
+
+ return result;
+ }
+
+ /// <summary>
+ /// Convert byte array to array of unsigned integers.
+ /// </summary>
+ /// <param name="bytes">Byte array.</param>
+ /// <returns>Array of integers</returns>
+ private static uint[] ToUInt32Array(byte[] bytes)
+ {
+ var result = new uint[bytes.Length / sizeof(uint)];
+ Buffer.BlockCopy(bytes, 0, result, 0, bytes.Length);
+
+ return result;
+ }
+
}
}