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Diffstat (limited to 'ext/ipp/sources/ippcp/pcphashupdate.c')
| -rw-r--r-- | ext/ipp/sources/ippcp/pcphashupdate.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/ext/ipp/sources/ippcp/pcphashupdate.c b/ext/ipp/sources/ippcp/pcphashupdate.c new file mode 100644 index 0000000..8323a40 --- /dev/null +++ b/ext/ipp/sources/ippcp/pcphashupdate.c @@ -0,0 +1,160 @@ +/******************************************************************************* +* Copyright 2014-2018 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. +// Security Hash Standard +// General Functionality +// +// Contents: +// ippsHashUpdate() +// +*/ + +#include "owndefs.h" +#include "owncp.h" +#include "pcphash.h" +#include "pcptool.h" + + +/*F* +// Name: ippsHashUpdate +// +// Purpose: Updates intermediate hash value based on input stream. +// +// Returns: Reason: +// ippStsNullPtrErr pState == NULL +// pSrc==0 but len!=0 +// ippStsContextMatchErr pState->idCtx != idCtxHash +// ippStsLengthErr len <0 +// ippStsNoErr no errors +// +// Parameters: +// pSrc pointer to the input stream +// len input stream length +// pState pointer to the Hash context +// +*F*/ +__INLINE int IsExceedMsgLen(Ipp64u maxLo, Ipp64u maxHi, Ipp64u lenLo, Ipp64u lenHi) +{ + int isExceed = lenLo > maxLo; + isExceed = (lenHi+isExceed) > maxHi; + return isExceed; +} + +IPPFUN(IppStatus, ippsHashUpdate,(const Ipp8u* pSrc, int len, IppsHashState* pState)) +{ + /* test state pointer and ID */ + IPP_BAD_PTR1_RET(pState); + /* test the context */ + IPP_BADARG_RET(!HASH_VALID_ID(pState), ippStsContextMatchErr); + /* test input length */ + IPP_BADARG_RET((len<0 && pSrc), ippStsLengthErr); + /* test source pointer */ + IPP_BADARG_RET((len && !pSrc), ippStsNullPtrErr); + + /* handle non empty input */ + if(len) { + const cpHashAttr* pAttr = &cpHashAlgAttr[HASH_ALG_ID(pState)]; + + /* test if size of message is being processed not exceeded yet */ + Ipp64u lenLo = HASH_LENLO(pState); + Ipp64u lenHi = HASH_LENHI(pState); + lenLo += len; + if(lenLo < HASH_LENLO(pState)) lenHi++; + if(IsExceedMsgLen(pAttr->msgLenMax[0],pAttr->msgLenMax[1], lenLo,lenHi)) + IPP_ERROR_RET(ippStsLengthErr); + + else { + cpHashProc hashFunc = HASH_FUNC(pState); /* processing function */ + const void* pParam = HASH_FUNC_PAR(pState); /* and it's addition params */ + int mbs = pAttr->msgBlkSize; /* data block size */ + + /* + // processing + */ + { + int procLen; + + /* test if internal buffer is not empty */ + int n = HAHS_BUFFIDX(pState); + if(n) { + procLen = IPP_MIN(len, (mbs-n)); + CopyBlock(pSrc, HASH_BUFF(pState)+n, procLen); + HAHS_BUFFIDX(pState) = n += procLen; + + /* block processing */ + if(mbs==n) { + hashFunc(HASH_VALUE(pState), HASH_BUFF(pState), mbs, pParam); + HAHS_BUFFIDX(pState) = 0; + } + + /* update message pointer and length */ + pSrc += procLen; + len -= procLen; + } + + /* main processing part */ + procLen = len & ~(mbs-1); + if(procLen) { + hashFunc(HASH_VALUE(pState), pSrc, procLen, pParam); + pSrc += procLen; + len -= procLen; + } + + /* rest of input message */ + if(len) { + CopyBlock(pSrc, HASH_BUFF(pState), len); + HAHS_BUFFIDX(pState) += len; + } + } + + /* update length of processed message */ + HASH_LENLO(pState) = lenLo; + HASH_LENHI(pState) = lenHi; + + return ippStsNoErr; + } + } + + return ippStsNoErr; +} |