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Diffstat (limited to 'ext/ipp/sources/ippcp/pcpshsmgfca.c')
| -rw-r--r-- | ext/ipp/sources/ippcp/pcpshsmgfca.c | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/ext/ipp/sources/ippcp/pcpshsmgfca.c b/ext/ipp/sources/ippcp/pcpshsmgfca.c new file mode 100644 index 0000000..64644ec --- /dev/null +++ b/ext/ipp/sources/ippcp/pcpshsmgfca.c @@ -0,0 +1,136 @@ +/******************************************************************************* +* Copyright 2005-2018 Intel Corporation +* All Rights Reserved. +* +* If this software was obtained under the Intel Simplified Software License, +* the following terms apply: +* +* The source code, information and material ("Material") contained herein is +* owned by Intel Corporation or its suppliers or licensors, and title to such +* Material remains with Intel Corporation or its suppliers or licensors. The +* Material contains proprietary information of Intel or its suppliers and +* licensors. The Material is protected by worldwide copyright laws and treaty +* provisions. No part of the Material may be used, copied, reproduced, +* modified, published, uploaded, posted, transmitted, distributed or disclosed +* in any way without Intel's prior express written permission. No license under +* any patent, copyright or other intellectual property rights in the Material +* is granted to or conferred upon you, either expressly, by implication, +* inducement, estoppel or otherwise. Any license under such intellectual +* property rights must be express and approved by Intel in writing. +* +* Unless otherwise agreed by Intel in writing, you may not remove or alter this +* notice or any other notice embedded in Materials by Intel or Intel's +* suppliers or licensors in any way. +* +* +* If this software was obtained under the Apache License, Version 2.0 (the +* "License"), the following terms apply: +* +* You may not use this file except in compliance with the License. You may +* obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 +* +* +* Unless required by applicable law or agreed to in writing, software +* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +* +* See the License for the specific language governing permissions and +* limitations under the License. +*******************************************************************************/ + +/* +// +// Purpose: +// Cryptography Primitive. +// HASH based Mask Generation Functions +// +// Contents: +// ippsMGF_SHA1() +// ippsMGF_SHA224() +// ippsMGF_SHA256() +// ippsMGF_SHA384() +// ippsMGF_SHA512() +// ippsMGF_MD5() +// +// +*/ + +#include "owndefs.h" +#include "owncp.h" +#include "pcphash.h" +#include "pcptool.h" + + +/*F* +// Name: ippsMGF_SHA1 +// ippsMGF_SHA224 +// ippsMGF_SHA256 +// ippsMGF_SHA384 +// ippsMGF_SHA512 +// ippsMGF_MD5 +// +// Purpose: Mask Generation Functions. +// +// Returns: Reason: +// ippStsNullPtrErr pMask == NULL +// ippStsLengthErr seedLen <0 +// maskLen <0 +// ippStsNotSupportedModeErr if algID is not match to supported hash alg +// ippStsNoErr no errors +// +// Parameters: +// pSeed pointer to the input stream +// seedLen input stream length (bytes) +// pMask pointer to the ouput mask +// maskLen desired length of mask (bytes) +// hashAlg identifier of the hash algorithm +// +*F*/ +IPPFUN(IppStatus, ippsMGF,(const Ipp8u* pSeed, int seedLen, Ipp8u* pMask, int maskLen, IppHashAlgId hashAlg)) +{ + /* get algorithm id */ + hashAlg = cpValidHashAlg(hashAlg); + /* test hash alg */ + IPP_BADARG_RET(ippHashAlg_Unknown==hashAlg, ippStsNotSupportedModeErr); + + IPP_BAD_PTR1_RET(pMask); + IPP_BADARG_RET((seedLen<0)||(maskLen<0), ippStsLengthErr); + + { + /* hash specific */ + int hashSize = cpHashSize(hashAlg); + + int i, outLen; + + IppsHashState hashCtx; + ippsHashInit(&hashCtx, hashAlg); + + if(!pSeed) + seedLen = 0; + + for(i=0,outLen=0; outLen<maskLen; i++) { + Ipp8u cnt[4]; + cnt[0] = (Ipp8u)((i>>24) & 0xFF); + cnt[1] = (Ipp8u)((i>>16) & 0xFF); + cnt[2] = (Ipp8u)((i>>8) & 0xFF); + cnt[3] = (Ipp8u)(i & 0xFF); + + cpReInitHash(&hashCtx, hashAlg); + ippsHashUpdate(pSeed, seedLen, &hashCtx); + ippsHashUpdate(cnt, 4, &hashCtx); + + if((outLen + hashSize) <= maskLen) { + ippsHashFinal(pMask+outLen, &hashCtx); + outLen += hashSize; + } + else { + Ipp8u md[MAX_HASH_SIZE]; + ippsHashFinal(md, &hashCtx); + CopyBlock(md, pMask+outLen, maskLen-outLen); + outLen = maskLen; + } + } + + return ippStsNoErr; + } +} |