hondacrx
56 lines
1.3 KiB
C#
56 lines
1.3 KiB
C#
// Copyright (c) CypherCore <http://github.com/CypherCore> All rights reserved.
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// Licensed under the GNU GENERAL PUBLIC LICENSE. See LICENSE file in the project root for full license information.
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using System.Security.Cryptography;
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using System;
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namespace Game
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{
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class SHA1Randx
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{
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public SHA1Randx(byte[] buff)
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{
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int halfSize = buff.Length / 2;
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Span<byte> span = buff;
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sh = SHA1.Create();
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o1 = sh.ComputeHash(buff, 0, halfSize);
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sh = SHA1.Create();
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o2 = sh.ComputeHash(span[halfSize..].ToArray(), 0, buff.Length - halfSize);
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FillUp();
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}
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public void Generate(byte[] buf, uint sz)
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{
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for (uint i = 0; i < sz; ++i)
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{
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if (taken == 20)
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FillUp();
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buf[i] = o0[taken];
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taken++;
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}
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}
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void FillUp()
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{
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sh = SHA1.Create();
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sh.ComputeHash(o1, 0, 20);
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sh.ComputeHash(o0, 0, 20);
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o0 = sh.ComputeHash(o2, 0, 20);
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taken = 0;
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}
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SHA1 sh;
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uint taken;
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byte[] o0 = new byte[20];
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byte[] o1 = new byte[20];
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byte[] o2 = new byte[20];
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}
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}
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