71 lines
1.8 KiB
C++
71 lines
1.8 KiB
C++
/*
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* This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "SHA256.h"
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#include "BigNumber.h"
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#include <cstring>
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#include <stdarg.h>
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SHA256Hash::SHA256Hash() : _ctx(EVP_MD_CTX_create())
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{
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EVP_DigestInit_ex(_ctx, EVP_sha256(), nullptr);
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memset(mDigest, 0, SHA256_DIGEST_LENGTH * sizeof(uint8));
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}
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SHA256Hash::~SHA256Hash()
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{
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EVP_MD_CTX_destroy(_ctx);
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_ctx = nullptr;
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}
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void SHA256Hash::UpdateData(const uint8 *dta, int len)
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{
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EVP_DigestUpdate(_ctx, dta, len);
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}
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void SHA256Hash::UpdateData(const std::string &str)
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{
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UpdateData((uint8 const*)str.c_str(), str.length());
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}
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void SHA256Hash::UpdateBigNumbers(BigNumber* bn0, ...)
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{
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va_list v;
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BigNumber* bn;
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va_start(v, bn0);
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bn = bn0;
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while (bn)
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{
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UpdateData(bn->AsByteArray().get(), bn->GetNumBytes());
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bn = va_arg(v, BigNumber*);
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}
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va_end(v);
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}
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void SHA256Hash::Initialize()
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{
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EVP_DigestInit_ex(_ctx, EVP_sha256(), nullptr);
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}
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void SHA256Hash::Finalize(void)
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{
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uint32 length = SHA256_DIGEST_LENGTH;
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EVP_DigestFinal_ex(_ctx, mDigest, &length);
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ASSERT(length == SHA256_DIGEST_LENGTH);
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}
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