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Diffstat (limited to 'ext/ipp/sources/ippcp/pcpgfpxinitbinomial.c')
| -rw-r--r-- | ext/ipp/sources/ippcp/pcpgfpxinitbinomial.c | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/ext/ipp/sources/ippcp/pcpgfpxinitbinomial.c b/ext/ipp/sources/ippcp/pcpgfpxinitbinomial.c new file mode 100644 index 0000000..2f68303 --- /dev/null +++ b/ext/ipp/sources/ippcp/pcpgfpxinitbinomial.c @@ -0,0 +1,117 @@ +/******************************************************************************* +* Copyright 2010-2018 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) ectension. +// +// Context: +// pcpgfpxinitbinomial.c() +// +*/ + +#include "owndefs.h" +#include "owncp.h" +#include "pcpgfpstuff.h" +#include "pcpgfpxstuff.h" +#include "pcptool.h" + + +/*F* +// Name: ippsGFpxInitBinomial +// +// Purpose: initializes finite field extension GF(p^d) +// +// Returns: Reason: +// ippStsNullPtrErr NULL == pGFpx +// NULL == pGroundGF +// NULL == pGroundElm +// NULL == pGFpMethod +// +// ippStsContextMatchErr incorrect pGroundGF's context ID +// incorrect pGroundElm's context ID +// +// ippStsOutOfRangeErr size of pGroundElm does not equal to size of pGroundGF element +// +// ippStsBadArgErr IPP_MIN_GF_EXTDEG > extDeg || extDeg > IPP_MAX_GF_EXTDEG +// (IPP_MIN_GF_EXTDEG==2, IPP_MAX_GF_EXTDEG==8) +// +// cpID_Poly!=pGFpMethod->modulusID -- method does not refferenced to polynomial one +// pGFpMethod->modulusBitDeg!=extDeg -- fixed method does not match to degree extension +// +// ippStsNoErr no error +// +// Parameters: +// pGroundGF pointer to the context of the finite field is being extension +// extDeg degree of extension +// pGroundElm pointer to the IppsGFpElement context containing the trailing coefficient of the field binomial. +// pGFpMethod pointer to the basic arithmetic metods +// pGFpx pointer to Finite Field context is being initialized +*F*/ +IPPFUN(IppStatus, ippsGFpxInitBinomial,(const IppsGFpState* pGroundGF, int extDeg, + const IppsGFpElement* pGroundElm, + const IppsGFpMethod* pGFpMethod, + IppsGFpState* pGFpx)) +{ + IPP_BAD_PTR4_RET(pGFpx, pGroundGF, pGroundElm, pGFpMethod); + + pGFpx = (IppsGFpState*)( IPP_ALIGNED_PTR(pGFpx, GFP_ALIGNMENT) ); + pGroundGF = (IppsGFpState*)( IPP_ALIGNED_PTR(pGroundGF, GFP_ALIGNMENT) ); + IPP_BADARG_RET( !GFP_TEST_ID(pGroundGF), ippStsContextMatchErr ); + + IPP_BADARG_RET( !GFPE_TEST_ID(pGroundElm), ippStsContextMatchErr ); + IPP_BADARG_RET(GFPE_ROOM(pGroundElm)!=GFP_FELEN(GFP_PMA(pGroundGF)), ippStsOutOfRangeErr); + + IPP_BADARG_RET( extDeg<IPP_MIN_GF_EXTDEG || extDeg>IPP_MAX_GF_EXTDEG, ippStsBadArgErr); + + /* test method is binomial based */ + IPP_BADARG_RET(cpID_Binom != (pGFpMethod->modulusID & cpID_Binom), ippStsBadArgErr); + + /* test if method assums fixed degree extension */ + IPP_BADARG_RET(pGFpMethod->modulusBitDeg && (extDeg!=pGFpMethod->modulusBitDeg), ippStsBadArgErr); + + /* init context */ + InitGFpxCtx(pGroundGF, extDeg, pGFpMethod, pGFpx); + + /* store low-order coefficient of irresucible into the context */ + cpGFpElementCopy(GFP_MODULUS(GFP_PMA(pGFpx)), GFPE_DATA(pGroundElm), GFP_FELEN(GFP_PMA(pGroundGF))); + + return ippStsNoErr; +} |