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Diffstat (limited to 'ext/ipp/sources/ippcp/pcpgfpecsetpointreg.c')
-rw-r--r-- | ext/ipp/sources/ippcp/pcpgfpecsetpointreg.c | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/ext/ipp/sources/ippcp/pcpgfpecsetpointreg.c b/ext/ipp/sources/ippcp/pcpgfpecsetpointreg.c new file mode 100644 index 0000000..13f49db --- /dev/null +++ b/ext/ipp/sources/ippcp/pcpgfpecsetpointreg.c @@ -0,0 +1,132 @@ +/******************************************************************************* +* 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. +*******************************************************************************/ + +/* +// +// Purpose: +// Intel(R) Integrated Performance Primitives. Cryptography Primitives. +// EC over GF(p) Operations +// +// Context: +// ippsGFpECSetPointRegular() +// +*/ + +#include "owndefs.h" +#include "owncp.h" +#include "pcpgfpecstuff.h" +#include "pcphash.h" +#include "pcphash_rmf.h" + +/*F* +// Name: ippsGFpECSetPointRegular +// +// Purpose: Sets a point with Big Number coordinates +// +// Returns: Reason: +// ippStsNullPtrErr pPoint == NULL +// pEC == NULL +// pX == NULL +// pY == NULL +// +// ippStsContextMatchErr invalid pEC->idCtx +// invalid pPoint->idCtx +// invalid pX->idCtx +// invalid pY->idCtx +// +// ippStsOutOfRangeErr GFP_FELEN() < pX <= 0 +// GFP_FELEN() < pY <= 0 +// ECP_POINT_FELEN(pPoint)!=GFP_FELEN() +// +// ippStsNoErr no error +// +// Parameters: +// pX, pY Pointers to the X and Y coordinates of a point on the elliptic curve +// pPoint Pointer to the IppsGFpECPoint context +// pEC Pointer to the context of the elliptic curve +// +*F*/ + +IPPFUN(IppStatus, ippsGFpECSetPointRegular,(const IppsBigNumState* pX, const IppsBigNumState* pY, + IppsGFpECPoint* pPoint, + IppsGFpECState* pEC)) +{ + IPP_BAD_PTR2_RET(pPoint, pEC); + pEC = (IppsGFpECState*)( IPP_ALIGNED_PTR(pEC, ECGFP_ALIGNMENT) ); + IPP_BADARG_RET( !ECP_TEST_ID(pEC), ippStsContextMatchErr ); + IPP_BADARG_RET( !ECP_POINT_TEST_ID(pPoint), ippStsContextMatchErr ); + + IPP_BAD_PTR2_RET(pX, pY); + pX = (IppsBigNumState*)( IPP_ALIGNED_PTR(pX, BN_ALIGNMENT) ); + pY = (IppsBigNumState*)( IPP_ALIGNED_PTR(pY, BN_ALIGNMENT) ); + IPP_BADARG_RET( !BN_VALID_ID(pX), ippStsContextMatchErr ); + IPP_BADARG_RET( !BN_VALID_ID(pY), ippStsContextMatchErr ); + IPP_BADARG_RET( !BN_POSITIVE(pX), ippStsOutOfRangeErr); + IPP_BADARG_RET( !BN_POSITIVE(pY), ippStsOutOfRangeErr); + + { + IppsGFpState* pGF = ECP_GFP(pEC); + gsModEngine* pGFE = GFP_PMA(pGF); + int elemLen = GFP_FELEN(pGFE); + + IPP_BADARG_RET( !GFP_IS_BASIC(pGFE), ippStsBadArgErr ) + + IPP_BADARG_RET( BN_SIZE(pX) > elemLen, ippStsOutOfRangeErr); + IPP_BADARG_RET( BN_SIZE(pY) > elemLen, ippStsOutOfRangeErr); + IPP_BADARG_RET( ECP_POINT_FELEN(pPoint)!=elemLen, ippStsOutOfRangeErr); + + { + BNU_CHUNK_T* pointX = ECP_POINT_X(pPoint); + BNU_CHUNK_T* pointY = ECP_POINT_Y(pPoint); + BNU_CHUNK_T* pointZ = ECP_POINT_Z(pPoint); + + cpGFpElementCopyPadd(pointX, elemLen, BN_NUMBER(pX), BN_SIZE(pX)); + cpGFpElementCopyPadd(pointY, elemLen, BN_NUMBER(pY), BN_SIZE(pY)); + cpGFpElementCopy(pointZ, MOD_MNT_R(pGFE), elemLen); + + if( cpGFpSet(pointX, pointX, elemLen, pGFE) && cpGFpSet(pointY, pointY, elemLen, pGFE) ) + ECP_POINT_FLAGS(pPoint) = ECP_AFFINE_POINT | ECP_FINITE_POINT; + else + gfec_SetPointAtInfinity(pPoint); + + return ippStsNoErr; + } + } +} |