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/*
dbx_tree: tree database driver for Miranda IM
Copyright 2007-2008 Michael "Protogenes" Kunz,
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#pragma once
#include "Cipher.h"
class ARC4 : public CCipher
{
private:
uint8_t x;
uint8_t y;
uint8_t State[256];
uint8_t Backx;
uint8_t Backy;
uint8_t BackState[256];
uint8_t Stream();
static const wchar_t* cName;
static const wchar_t* cDescription;
static const uint32_t cBlockSizeBytes = 1;
static const bool cIsStreamCipher = true;
public:
const wchar_t * __cdecl Name();
const wchar_t * __cdecl Description();
const uint32_t __cdecl BlockSizeBytes();
const bool __cdecl IsStreamCipher();
static const TCipherInfo cCipherInfo;
ARC4();
~ARC4();
static CCipher::TCipherInterface* __cdecl Create();
void __cdecl SetKey(void* Key, uint32_t KeyLength);
void __cdecl Encrypt(void* Data, uint32_t Size, uint32_t Nonce, uint32_t StartByte);
void __cdecl Decrypt(void* Data, uint32_t Size, uint32_t Nonce, uint32_t StartByte);
};
const wchar_t* ARC4::cName = L"ARC4";
const wchar_t* ARC4::cDescription = L"Streamcipher - 8bit step, fast, Ron Rivest 1987";
const TCipherInfo ARC4::cCipherInfo = {sizeof(TCipherInfo), 'ARC4', cName, cDescription, &ARC4::Create};
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