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/*
* Copyright (C) 2008-2014 TrinityCore <http://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 "HmacHash.h"
#include "BigNumber.h"
#include "Common.h"
HmacHash::HmacHash(uint32 len, uint8 *seed, EVP_MD const* hasher, uint32 digestLength)
{
HMAC_CTX_init(&_ctx);
HMAC_Init_ex(&_ctx, seed, len, hasher, NULL);
_digest = new uint8[digestLength];
memset(_digest, 0, digestLength);
}
HmacHash::~HmacHash()
{
HMAC_CTX_cleanup(&_ctx);
delete[] _digest;
}
void HmacHash::UpdateData(const std::string &str)
{
HMAC_Update(&_ctx, (uint8 const*)str.c_str(), str.length());
}
void HmacHash::UpdateData(const uint8* data, size_t len)
{
HMAC_Update(&_ctx, data, len);
}
void HmacHash::Finalize()
{
uint32 length = 0;
HMAC_Final(&_ctx, _digest, &length);
ASSERT(length == _digestLength);
}
uint8* HmacHash::ComputeHash(BigNumber* bn)
{
HMAC_Update(&_ctx, bn->AsByteArray().get(), bn->GetNumBytes());
Finalize();
return _digest;
}
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