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Diffstat (limited to 'ext/ipp/sources/ippcp/pcpgfpsetelemhashrmf.c')
-rw-r--r-- | ext/ipp/sources/ippcp/pcpgfpsetelemhashrmf.c | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/ext/ipp/sources/ippcp/pcpgfpsetelemhashrmf.c b/ext/ipp/sources/ippcp/pcpgfpsetelemhashrmf.c new file mode 100644 index 0000000..78b6935 --- /dev/null +++ b/ext/ipp/sources/ippcp/pcpgfpsetelemhashrmf.c @@ -0,0 +1,123 @@ +/******************************************************************************* +* Copyright 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. +*******************************************************************************/ + +/* +// Intel(R) Integrated Performance Primitives. Cryptography Primitives. +// Operations over GF(p). +// +// Context: +// ippsGFpSetElementHash_rmf +// +*/ +#include "owndefs.h" +#include "owncp.h" + +#include "pcpgfpstuff.h" +#include "pcpgfpxstuff.h" +#include "pcphash.h" +#include "pcphash_rmf.h" +#include "pcptool.h" + + +/*F* +// Name: ippsGFpSetElementHash_rmf +// +// Purpose: Set GF Element Hash of the Message +// +// Returns: Reason: +// ippStsNullPtrErr NULL == pGFp +// NULL == pElm +// NULL == pMsg if msgLen>0 +// NULL = pMethod +// +// ippStsContextMatchErr invalid pGFp->idCtx +// invalid pElm->idCtx +// +// ippStsOutOfRangeErr GFPE_ROOM() != GFP_FELEN() +// +// ippStsBadArgErr !GFP_IS_BASIC(pGFE) +// +// ippStsLengthErr msgLen<0 +// +// ippStsNoErr no error +// +// Parameters: +// pMsg pointer to the message is being hashed +// msgLen length of the message above +// pElm pointer to Finite Field Element context +// pGFp pointer to Finite Field context +// pMethod pointer to hash method +*F*/ + +IPPFUN(IppStatus, ippsGFpSetElementHash_rmf,(const Ipp8u* pMsg, int msgLen, IppsGFpElement* pElm, IppsGFpState* pGFp, const IppsHashMethod* pMethod)) +{ + /* test method pointer */ + IPP_BAD_PTR1_RET(pMethod); + + /* test message length and pointer */ + IPP_BADARG_RET((msgLen<0), ippStsLengthErr); + IPP_BADARG_RET((msgLen && !pMsg), ippStsNullPtrErr); + + IPP_BAD_PTR2_RET(pElm, pGFp); + pGFp = (IppsGFpState*)( IPP_ALIGNED_PTR(pGFp, GFP_ALIGNMENT) ); + IPP_BADARG_RET( !GFP_TEST_ID(pGFp), ippStsContextMatchErr); + IPP_BADARG_RET( !GFPE_TEST_ID(pElm), ippStsContextMatchErr); + { + gsModEngine* pGFE = GFP_PMA(pGFp); + IPP_BADARG_RET( !GFP_IS_BASIC(pGFE), ippStsBadArgErr); + IPP_BADARG_RET( GFPE_ROOM(pElm)!=GFP_FELEN(pGFE), ippStsOutOfRangeErr); + + { + Ipp8u md[MAX_HASH_SIZE]; + BNU_CHUNK_T hashVal[(MAX_HASH_SIZE*8)/BITSIZE(BNU_CHUNK_T)+1]; /* +1 to meet cpMod_BNU() implementtaion specific */ + IppStatus sts = ippsHashMessage_rmf(pMsg, msgLen, md, pMethod); + + if(ippStsNoErr==sts) { + int elemLen = GFP_FELEN(pGFE); + int hashLen = pMethod->hashLen; + int hashValLen = cpFromOctStr_BNU(hashVal, md, hashLen); + hashValLen = cpMod_BNU(hashVal, hashValLen, GFP_MODULUS(pGFE), elemLen); + cpGFpSet(GFPE_DATA(pElm), hashVal, hashValLen, pGFE); + } + + return sts; + } + } +} |