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/*
* Copyright (C) 2008-2019 TrinityCore <https://www.trinitycore.org/>
* Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "ARC4.h"
ARC4::ARC4(uint32 len) : m_ctx(EVP_CIPHER_CTX_new())
{
EVP_CIPHER_CTX_init(m_ctx);
EVP_EncryptInit_ex(m_ctx, EVP_rc4(), nullptr, nullptr, nullptr);
EVP_CIPHER_CTX_set_key_length(m_ctx, len);
}
ARC4::ARC4(uint8* seed, uint32 len) : m_ctx(EVP_CIPHER_CTX_new())
{
EVP_CIPHER_CTX_init(m_ctx);
EVP_EncryptInit_ex(m_ctx, EVP_rc4(), nullptr, nullptr, nullptr);
EVP_CIPHER_CTX_set_key_length(m_ctx, len);
EVP_EncryptInit_ex(m_ctx, nullptr, nullptr, seed, nullptr);
}
ARC4::~ARC4()
{
EVP_CIPHER_CTX_free(m_ctx);
}
void ARC4::Init(uint8* seed)
{
EVP_EncryptInit_ex(m_ctx, nullptr, nullptr, seed, nullptr);
}
void ARC4::UpdateData(int len, uint8* data)
{
int outlen = 0;
EVP_EncryptUpdate(m_ctx, data, &outlen, data, len);
EVP_EncryptFinal_ex(m_ctx, data, &outlen);
}
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