openclonk/thirdparty/blake2/csharp/Blake2Sharp/Hasher.cs

61 lines
1.4 KiB
C#

// BLAKE2 reference source code package - C# implementation
// Written in 2012 by Christian Winnerlein <codesinchaos@gmail.com>
// To the extent possible under law, the author(s) have dedicated all copyright
// and related and neighboring rights to this software to the public domain
// worldwide. This software is distributed without any warranty.
// You should have received a copy of the CC0 Public Domain Dedication along with
// this software. If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
using System;
using System.Collections.Generic;
using System.Security.Cryptography;
using System.Text;
namespace Blake2Sharp
{
public abstract class Hasher
{
public abstract void Init();
public abstract byte[] Finish();
public abstract void Update(byte[] data, int start, int count);
public void Update(byte[] data)
{
Update(data, 0, data.Length);
}
public HashAlgorithm AsHashAlgorithm()
{
return new HashAlgorithmAdapter(this);
}
internal class HashAlgorithmAdapter : HashAlgorithm
{
private readonly Hasher _hasher;
protected override void HashCore(byte[] array, int ibStart, int cbSize)
{
_hasher.Update(array, ibStart, cbSize);
}
protected override byte[] HashFinal()
{
return _hasher.Finish();
}
public override void Initialize()
{
_hasher.Init();
}
public HashAlgorithmAdapter(Hasher hasher)
{
_hasher = hasher;
}
}
}
}