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Diffstat (limited to 'ext/ipp/sources/ippcp/pcpeccpinit.c')
| -rw-r--r-- | ext/ipp/sources/ippcp/pcpeccpinit.c | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/ext/ipp/sources/ippcp/pcpeccpinit.c b/ext/ipp/sources/ippcp/pcpeccpinit.c new file mode 100644 index 0000000..7d2b16f --- /dev/null +++ b/ext/ipp/sources/ippcp/pcpeccpinit.c @@ -0,0 +1,106 @@ +/******************************************************************************* +* Copyright 2003-2018 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. +// EC over Prime Finite Field (initialization) +// +// Contents: +// ippsECCPInit() +// +*/ + +#include "owndefs.h" +#include "owncp.h" +#include "pcpeccp.h" + +/*F* +// Name: ippsECCPInit +// +// Purpose: Init ECC context. +// +// Returns: Reason: +// ippStsNullPtrErr NULL == pEC +// +// ippStsSizeErr 2>feBitSize +// feBitSize>EC_GFP_MAXBITSIZE +// ippStsNoErr no errors +// +// Parameters: +// feBitSize size of field element (bits) +// pEC pointer to the ECC context +// +*F*/ +IPPFUN(IppStatus, ippsECCPInit, (int feBitSize, IppsECCPState* pEC)) +{ + /* test pEC pointer */ + IPP_BAD_PTR1_RET(pEC); + /* use aligned EC context */ + pEC = (IppsECCPState*)( IPP_ALIGNED_PTR(pEC, ECGFP_ALIGNMENT) ); + + /* test size of field element */ + IPP_BADARG_RET((2>feBitSize || feBitSize>EC_GFP_MAXBITSIZE), ippStsSizeErr); + + { + /* size of GF context */ + //int gfCtxSize = cpGFpGetSize(feBitSize); + int gfCtxSize = cpGFpGetSize(feBitSize, feBitSize+BITSIZE(BNU_CHUNK_T), GFP_POOL_SIZE); + /* size of EC context */ + int ecCtxSize = cpGFpECGetSize(1, feBitSize); + + IppsGFpState* pGF = (IppsGFpState*)(IPP_ALIGNED_PTR((Ipp8u*)pEC+ecCtxSize, GFP_ALIGNMENT)); + BNU_CHUNK_T* pScratchBuffer = (BNU_CHUNK_T*)IPP_ALIGNED_PTR((Ipp8u*)pGF+gfCtxSize, CACHE_LINE_SIZE); + + /* set up contexts */ + IppStatus sts; + do { + sts = cpGFpInitGFp(feBitSize, pGF); + if(ippStsNoErr!=sts) break; + sts = ippsGFpECInit(pGF, NULL, NULL, pEC); + } while (0); + + /* save scratch buffer pointer */ + ECP_SBUFFER(pEC) = pScratchBuffer; + + return sts; + } +} |