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Diffstat (limited to 'ext/ipp/sources/ippcp/pcpgfpsubpe.c')
| -rw-r--r-- | ext/ipp/sources/ippcp/pcpgfpsubpe.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/ext/ipp/sources/ippcp/pcpgfpsubpe.c b/ext/ipp/sources/ippcp/pcpgfpsubpe.c new file mode 100644 index 0000000..ba147ba --- /dev/null +++ b/ext/ipp/sources/ippcp/pcpgfpsubpe.c @@ -0,0 +1,104 @@ +/******************************************************************************* +* 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). +// +// Context: +// ippsGFpSub_PE() +// +*/ +#include "owndefs.h" +#include "owncp.h" + +#include "pcpgfpstuff.h" +#include "pcpgfpxstuff.h" +#include "pcptool.h" + +/*F* +// Name: ippsGFpSub_PE +// +// Purpose: Subtract of GF element and parent GF element +// +// Returns: Reason: +// ippStsNullPtrErr NULL == pGFp +// NULL == pA +// NULL == pR +// NULL == pParentB +// +// ippStsContextMatchErr invalid pGFp->idCtx +// invalid pA->idCtx +// invalid pR->idCtx +// invalid pParentB->idCtx +// +// ippStsOutOfRangeErr GFPE_ROOM() != GFP_FELEN() +// +// ippStsBadArgErr pGFp does not specify prime field +// +// ippStsNoErr no error +// +// Parameters: +// pA Pointer to the context of the first finite field element. +// pParentB Pointer to the context of the second finite field element. +// pR Pointer to the context of the result finite field element. +// pGFp Pointer to the context of the finite field. +// +*F*/ + +IPPFUN(IppStatus, ippsGFpSub_PE,(const IppsGFpElement* pA, const IppsGFpElement* pParentB, + IppsGFpElement* pR, IppsGFpState* pGFp)) +{ + IPP_BAD_PTR4_RET(pA, pParentB, pR, pGFp); + pGFp = (IppsGFpState*)( IPP_ALIGNED_PTR(pGFp, GFP_ALIGNMENT) ); + IPP_BADARG_RET( !GFP_TEST_ID(pGFp), ippStsContextMatchErr ); + IPP_BADARG_RET( !GFPE_TEST_ID(pA), ippStsContextMatchErr ); + IPP_BADARG_RET( !GFPE_TEST_ID(pParentB), ippStsContextMatchErr ); + IPP_BADARG_RET( !GFPE_TEST_ID(pR), ippStsContextMatchErr ); + { + gsModEngine* pGFE = GFP_PMA(pGFp); + IPP_BADARG_RET( GFP_IS_BASIC(pGFE), ippStsBadArgErr ) + IPP_BADARG_RET( (GFPE_ROOM(pA)!=GFP_FELEN(pGFE)) || (GFPE_ROOM(pR)!=GFP_FELEN(pGFE)), ippStsOutOfRangeErr); + IPP_BADARG_RET( (GFPE_ROOM(pParentB)!=GFP_FELEN(GFP_PARENT(pGFE))), ippStsOutOfRangeErr); + + cpGFpxSub_GFE(GFPE_DATA(pR), GFPE_DATA(pA), GFPE_DATA(pParentB), pGFE); + return ippStsNoErr; + } +} |