diff options
Diffstat (limited to 'ext/ipp/sources/ippcp/pcpbnu_setoctstr.c')
| -rw-r--r-- | ext/ipp/sources/ippcp/pcpbnu_setoctstr.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/ext/ipp/sources/ippcp/pcpbnu_setoctstr.c b/ext/ipp/sources/ippcp/pcpbnu_setoctstr.c new file mode 100644 index 0000000..81c04fa --- /dev/null +++ b/ext/ipp/sources/ippcp/pcpbnu_setoctstr.c @@ -0,0 +1,101 @@ +/******************************************************************************* +* 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: +// Intel(R) Integrated Performance Primitives. Cryptography Primitives. +// Internal Unsigned BNU misc functionality +// +// Contents: +// cpFromOctStr_BNU() +// +*/ + +#include "owncp.h" +#include "pcpbnumisc.h" + +/*F* +// Name: cpFromOctStr_BNU +// +// Purpose: Convert Oct String into BNU representation. +// +// Returns: +// size of BNU in BNU_CHUNK_T chunks +// +// Parameters: +// pStr pointer to the source octet string +// strLen octet string length +// pA pointer to the target BN +// +*F*/ + +cpSize cpFromOctStr_BNU(BNU_CHUNK_T* pA, const Ipp8u* pStr, cpSize strLen) +{ + int nsA =0; + + /* start from the end of string */ + for(; strLen>=(int)sizeof(BNU_CHUNK_T); nsA++,strLen-=(int)(sizeof(BNU_CHUNK_T))) { + /* pack sizeof(BNU_CHUNK_T) bytes into single BNU_CHUNK_T value*/ + *pA++ = + #if (BNU_CHUNK_BITS==BNU_CHUNK_64BIT) + +( (BNU_CHUNK_T)pStr[strLen-8]<<(8*7) ) + +( (BNU_CHUNK_T)pStr[strLen-7]<<(8*6) ) + +( (BNU_CHUNK_T)pStr[strLen-6]<<(8*5) ) + +( (BNU_CHUNK_T)pStr[strLen-5]<<(8*4) ) + #endif + +( (BNU_CHUNK_T)pStr[strLen-4]<<(8*3) ) + +( (BNU_CHUNK_T)pStr[strLen-3]<<(8*2) ) + +( (BNU_CHUNK_T)pStr[strLen-2]<<(8*1) ) + + (BNU_CHUNK_T)pStr[strLen-1]; + } + + /* convert the beginning of the string */ + if(strLen) { + BNU_CHUNK_T x = 0; + for(x=0; strLen>0; strLen--) { + BNU_CHUNK_T d = *pStr++; + x = (x<<8) + d; + } + *pA++ = x; + nsA++; + } + + return nsA; +} |