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Diffstat (limited to 'ext/ipp/sources/ippcp/pcpgfpecgetpoint.c')
| -rw-r--r-- | ext/ipp/sources/ippcp/pcpgfpecgetpoint.c | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/ext/ipp/sources/ippcp/pcpgfpecgetpoint.c b/ext/ipp/sources/ippcp/pcpgfpecgetpoint.c new file mode 100644 index 0000000..ad3235f --- /dev/null +++ b/ext/ipp/sources/ippcp/pcpgfpecgetpoint.c @@ -0,0 +1,109 @@ +/******************************************************************************* +* 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: +// ippsGFpECGetPoint() +// +*/ + +#include "owndefs.h" +#include "owncp.h" +#include "pcpgfpecstuff.h" +#include "pcphash.h" +#include "pcphash_rmf.h" + +/*F* +// Name: ippsGFpECGetPoint +// +// Purpose: Retrieves coordinates of a point on an elliptic curve +// +// Returns: Reason: +// ippStsNullPtrErr pPoint == NULL +// pEC == NULL +// +// ippStsContextMatchErr invalid pEC->idCtx +// invalid pPoint->idCtx +// pX != NULL && invalid pX->idCtx +// pY != NULL && invalid pY->idCtx +// pX != NULL && GFPE_ROOM(pX)!=GFP_FELEN() +// pY != NULL && GFPE_ROOM(pY)!=GFP_FELEN() +// +// ippStsOutOfRangeErr ECP_POINT_FELEN(pPoint)!=GFP_FELEN() +// pX != NULL && GFPE_ROOM(pX)!=GFP_FELEN() +// pY != NULL && GFPE_ROOM(pY)!=GFP_FELEN() +// +// ippStsNoErr no error +// +// Parameters: +// pPoint Pointer to the IppsGFpECPoint context +// pEC Pointer to the context of the elliptic curve +// pX, pY Pointers to the X and Y coordinates of a point on the elliptic curve +// +// Note: +// Is not a fact that computed point belongs to BP-related subgroup BP +// +*F*/ + +IPPFUN(IppStatus, ippsGFpECGetPoint,(const IppsGFpECPoint* pPoint, + IppsGFpElement* pX, IppsGFpElement* pY, + 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_BADARG_RET( pX && !GFPE_TEST_ID(pX), ippStsContextMatchErr ); + IPP_BADARG_RET( pY && !GFPE_TEST_ID(pY), ippStsContextMatchErr ); + + IPP_BADARG_RET( pX && GFPE_ROOM(pX)!=GFP_FELEN(GFP_PMA(ECP_GFP(pEC))), ippStsOutOfRangeErr); + IPP_BADARG_RET( pY && GFPE_ROOM(pY)!=GFP_FELEN(GFP_PMA(ECP_GFP(pEC))), ippStsOutOfRangeErr); + IPP_BADARG_RET( ECP_POINT_FELEN(pPoint)!=GFP_FELEN(GFP_PMA(ECP_GFP(pEC))), ippStsOutOfRangeErr); + + /* returns (X,Y) == (0,0) if Point is at infinity */ + gfec_GetPoint((pX)? GFPE_DATA(pX):NULL, (pY)? GFPE_DATA(pY):NULL, pPoint, pEC); + return ippStsNoErr; +} |