From 354bb40e75d94466e91fe6960523612c9d17ccfb Mon Sep 17 00:00:00 2001 From: Karen Arutyunov Date: Thu, 2 Nov 2017 23:11:29 +0300 Subject: Add implementation --- mysql/extra/yassl/taocrypt/src/hash.cpp | 191 ++++++++++++++++++++++++++++++++ 1 file changed, 191 insertions(+) create mode 100644 mysql/extra/yassl/taocrypt/src/hash.cpp (limited to 'mysql/extra/yassl/taocrypt/src/hash.cpp') diff --git a/mysql/extra/yassl/taocrypt/src/hash.cpp b/mysql/extra/yassl/taocrypt/src/hash.cpp new file mode 100644 index 0000000..c176e6a --- /dev/null +++ b/mysql/extra/yassl/taocrypt/src/hash.cpp @@ -0,0 +1,191 @@ +/* + Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved. + + 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; version 2 of the License. + + 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; see the file COPYING. If not, write to the + Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, + MA 02110-1301 USA. +*/ + +/* hash.cpp implements a base for digest types +*/ + +#include "runtime.hpp" +#include + +#include "hash.hpp" + + +namespace TaoCrypt { + + +HASHwithTransform::HASHwithTransform(word32 digSz, word32 buffSz) +{ +} + + +void HASHwithTransform::AddLength(word32 len) +{ + HashLengthType tmp = loLen_; + if ( (loLen_ += len) < tmp) + hiLen_++; // carry low to high + hiLen_ += SafeRightShift<8*sizeof(HashLengthType)>(len); +} + + +// Update digest with data of size len, do in blocks +void HASHwithTransform::Update(const byte* data, word32 len) +{ + // do block size increments + word32 blockSz = getBlockSize(); + byte* local = reinterpret_cast(buffer_); + + while (len) { + word32 add = min(len, blockSz - buffLen_); + memcpy(&local[buffLen_], data, add); + + buffLen_ += add; + data += add; + len -= add; + + if (buffLen_ == blockSz) { + ByteReverseIf(local, local, blockSz, getByteOrder()); + Transform(); + AddLength(blockSz); + buffLen_ = 0; + } + } +} + + +// Final process, place digest in hash +void HASHwithTransform::Final(byte* hash) +{ + word32 blockSz = getBlockSize(); + word32 digestSz = getDigestSize(); + word32 padSz = getPadSize(); + ByteOrder order = getByteOrder(); + + AddLength(buffLen_); // before adding pads + HashLengthType preLoLen = GetBitCountLo(); + HashLengthType preHiLen = GetBitCountHi(); + byte* local = reinterpret_cast(buffer_); + + local[buffLen_++] = 0x80; // add 1 + + // pad with zeros + if (buffLen_ > padSz) { + memset(&local[buffLen_], 0, blockSz - buffLen_); + buffLen_ += blockSz - buffLen_; + + ByteReverseIf(local, local, blockSz, order); + Transform(); + buffLen_ = 0; + } + memset(&local[buffLen_], 0, padSz - buffLen_); + + ByteReverseIf(local, local, blockSz, order); + + memcpy(&local[padSz], order ? &preHiLen : &preLoLen, sizeof(preLoLen)); + memcpy(&local[padSz+4], order ? &preLoLen : &preHiLen, sizeof(preLoLen)); + + Transform(); + ByteReverseIf(digest_, digest_, digestSz, order); + memcpy(hash, digest_, digestSz); + + Init(); // reset state +} + + +#ifdef WORD64_AVAILABLE + +HASH64withTransform::HASH64withTransform(word32 digSz, word32 buffSz) +{ +} + + +void HASH64withTransform::AddLength(word32 len) +{ + HashLengthType tmp = loLen_; + if ( (loLen_ += len) < tmp) + hiLen_++; // carry low to high + hiLen_ += SafeRightShift<8*sizeof(HashLengthType)>(len); +} + + +// Update digest with data of size len, do in blocks +void HASH64withTransform::Update(const byte* data, word32 len) +{ + // do block size increments + word32 blockSz = getBlockSize(); + byte* local = reinterpret_cast(buffer_); + + while (len) { + word32 add = min(len, blockSz - buffLen_); + memcpy(&local[buffLen_], data, add); + + buffLen_ += add; + data += add; + len -= add; + + if (buffLen_ == blockSz) { + ByteReverseIf(buffer_, buffer_, blockSz, getByteOrder()); + Transform(); + AddLength(blockSz); + buffLen_ = 0; + } + } +} + + +// Final process, place digest in hash +void HASH64withTransform::Final(byte* hash) +{ + word32 blockSz = getBlockSize(); + word32 digestSz = getDigestSize(); + word32 padSz = getPadSize(); + ByteOrder order = getByteOrder(); + + AddLength(buffLen_); // before adding pads + HashLengthType preLoLen = GetBitCountLo(); + HashLengthType preHiLen = GetBitCountHi(); + byte* local = reinterpret_cast(buffer_); + + local[buffLen_++] = 0x80; // add 1 + + // pad with zeros + if (buffLen_ > padSz) { + memset(&local[buffLen_], 0, blockSz - buffLen_); + buffLen_ += blockSz - buffLen_; + + ByteReverseIf(buffer_, buffer_, blockSz, order); + Transform(); + buffLen_ = 0; + } + memset(&local[buffLen_], 0, padSz - buffLen_); + + ByteReverseIf(buffer_, buffer_, padSz, order); + + buffer_[blockSz / sizeof(word64) - 2] = order ? preHiLen : preLoLen; + buffer_[blockSz / sizeof(word64) - 1] = order ? preLoLen : preHiLen; + + Transform(); + ByteReverseIf(digest_, digest_, digestSz, order); + memcpy(hash, digest_, digestSz); + + Init(); // reset state +} + +#endif // WORD64_AVAILABLE + + +} // namespace -- cgit v1.1