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Diffstat (limited to 'ext/ipp/sources/ippcp/pcpsha1update.c')
| -rw-r--r-- | ext/ipp/sources/ippcp/pcpsha1update.c | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/ext/ipp/sources/ippcp/pcpsha1update.c b/ext/ipp/sources/ippcp/pcpsha1update.c new file mode 100644 index 0000000..fb88797 --- /dev/null +++ b/ext/ipp/sources/ippcp/pcpsha1update.c @@ -0,0 +1,146 @@ +/******************************************************************************* +* Copyright 2002-2018 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. +// Digesting message according to SHA1 +// +// Contents: +// ippsSHA1Update() +// +*/ + +#include "owndefs.h" +#include "owncp.h" +#include "pcphash.h" +#include "pcphash_rmf.h" +#include "pcptool.h" +#include "pcpsha1stuff.h" + +/*F* +// Name: ippsSHA1Update +// +// Purpose: Updates intermediate digest based on input stream. +// +// Returns: Reason: +// ippStsNullPtrErr pSrc == NULL +// pState == NULL +// ippStsContextMatchErr pState->idCtx != idCtxSHA1 +// ippStsLengthErr len <0 +// ippStsNoErr no errors +// +// Parameters: +// pSrc pointer to the input stream +// len input stream length +// pState pointer to the SHA1 state +// +*F*/ +IPPFUN(IppStatus, ippsSHA1Update,(const Ipp8u* pSrc, int len, IppsSHA1State* pState)) +{ + /* test state pointer and ID */ + IPP_BAD_PTR1_RET(pState); + pState = (IppsSHA1State*)( IPP_ALIGNED_PTR(pState, SHA1_ALIGNMENT) ); + IPP_BADARG_RET(idCtxSHA1 !=HASH_CTX_ID(pState), ippStsContextMatchErr); + + /* test input length */ + IPP_BADARG_RET((len<0), ippStsLengthErr); + /* test source pointer */ + IPP_BADARG_RET((len && !pSrc), ippStsNullPtrErr); + + /* + // handle non empty message + */ + if(len) { + /* select processing function */ + #if (_SHA_NI_ENABLING_==_FEATURE_ON_) + cpHashProc updateFunc = UpdateSHA1ni; + #elif (_SHA_NI_ENABLING_==_FEATURE_TICKTOCK_) + cpHashProc updateFunc = IsFeatureEnabled(ippCPUID_SHA)? UpdateSHA1ni : UpdateSHA1; + #else + cpHashProc updateFunc = UpdateSHA1; + #endif + + int procLen; + + int idx = HAHS_BUFFIDX(pState); + Ipp8u* pBuffer = HASH_BUFF(pState); + Ipp64u lenLo = HASH_LENLO(pState) +len; + + /* if non empty internal buffer filling */ + if(idx) { + /* copy from input stream to the internal buffer as match as possible */ + procLen = IPP_MIN(len, (MBS_SHA1-idx)); + CopyBlock(pSrc, pBuffer+idx, procLen); + + /* update message pointer and length */ + idx += procLen; + pSrc += procLen; + len -= procLen; + + /* update digest if buffer full */ + if( MBS_SHA1 == idx) { + updateFunc(HASH_VALUE(pState), pBuffer, MBS_SHA1, sha1_cnt); + idx = 0; + } + } + + /* main message part processing */ + procLen = len & ~(MBS_SHA1-1); + if(procLen) { + updateFunc(HASH_VALUE(pState), pSrc, procLen, sha1_cnt); + pSrc += procLen; + len -= procLen; + } + + /* store rest of message into the internal buffer */ + if(len) { + CopyBlock(pSrc, pBuffer, len); + idx += len; + } + + /* update length of processed message */ + HASH_LENLO(pState) = lenLo; + HAHS_BUFFIDX(pState) = idx; + } + + return ippStsNoErr; +} |