forked from Mirrors/openclonk
67 lines
1.8 KiB
C#
67 lines
1.8 KiB
C#
// BLAKE2 reference source code package - C# implementation
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// Written in 2012 by Christian Winnerlein <codesinchaos@gmail.com>
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// To the extent possible under law, the author(s) have dedicated all copyright
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// and related and neighboring rights to this software to the public domain
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// worldwide. This software is distributed without any warranty.
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// You should have received a copy of the CC0 Public Domain Dedication along with
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// this software. If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
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using System;
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using System.Collections.Generic;
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using System.Text;
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namespace Blake2Sharp
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{
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internal class Blake2BHasher : Hasher
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{
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private readonly Blake2BCore core = new Blake2BCore();
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private readonly ulong[] rawConfig;
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private readonly byte[] key;
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private readonly int outputSizeInBytes;
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private static readonly Blake2BConfig DefaultConfig = new Blake2BConfig();
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public override void Init()
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{
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core.Initialize(rawConfig);
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if (key != null)
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{
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core.HashCore(key, 0, key.Length);
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}
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}
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public override byte[] Finish()
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{
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var fullResult = core.HashFinal();
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if (outputSizeInBytes != fullResult.Length)
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{
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var result = new byte[outputSizeInBytes];
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Array.Copy(fullResult, result, result.Length);
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return result;
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}
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else return fullResult;
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}
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public Blake2BHasher(Blake2BConfig config)
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{
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if (config == null)
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config = DefaultConfig;
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rawConfig = Blake2IvBuilder.ConfigB(config, null);
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if (config.Key != null && config.Key.Length != 0)
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{
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key = new byte[128];
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Array.Copy(config.Key, key, config.Key.Length);
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}
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outputSizeInBytes = config.OutputSizeInBytes;
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Init();
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}
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public override void Update(byte[] data, int start, int count)
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{
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core.HashCore(data, start, count);
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}
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}
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}
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