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Diffstat (limited to 'ext/ipp/sources/ippcp/pcpgfpeckeys.c')
-rw-r--r-- | ext/ipp/sources/ippcp/pcpgfpeckeys.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/ext/ipp/sources/ippcp/pcpgfpeckeys.c b/ext/ipp/sources/ippcp/pcpgfpeckeys.c new file mode 100644 index 0000000..d57cbfd --- /dev/null +++ b/ext/ipp/sources/ippcp/pcpgfpeckeys.c @@ -0,0 +1,152 @@ +/******************************************************************************* +* Copyright 2016-2018 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. +// +// Context: +// ippsGFpECTstKeyPair() +// +*/ + +#include "owndefs.h" +#include "owncp.h" +#include "pcpgfpecstuff.h" + + + +/*F* +// Name: ippsGFpECTstKeyPair +// +// Purpose: Test Key Pair +// +// Returns: Reason: +// ippStsNullPtrErr NULL == pEC +// NULL == pPrivate +// NULL == pPublic +// NULL == pResult +// NULL == pScratchBuffer +// +// ippStsContextMatchErr illegal pEC->idCtx +// pEC->subgroup == NULL +// illegal pPrivate->idCtx +// illegal pPublic->idCtx +// +// ippStsRangeErr ECP_POINT_FELEN(pPublic)<GFP_FELEN() +// +// ippStsNoErr no errors +// +// Parameters: +// pPrivate pointer to the private key +// pPublic pointer to the public key +// pResult pointer to the result: +// ippECValid/ippECInvalidPrivateKey/ippECPointIsAtInfinite/ippECInvalidPublicKey +// pEC pointer to the EC context +// pScratchBuffer pointer to buffer (1 mul_point operation) +// +*F*/ +IPPFUN(IppStatus, ippsGFpECTstKeyPair, (const IppsBigNumState* pPrivate, const IppsGFpECPoint* pPublic, IppECResult* pResult, + IppsGFpECState* pEC, Ipp8u* pScratchBuffer)) +{ + /* EC context and buffer */ + IPP_BAD_PTR2_RET(pEC, pScratchBuffer); + pEC = (IppsGFpECState*)( IPP_ALIGNED_PTR(pEC, ECGFP_ALIGNMENT) ); + IPP_BADARG_RET(!ECP_TEST_ID(pEC), ippStsContextMatchErr); + IPP_BADARG_RET(!ECP_SUBGROUP(pEC), ippStsContextMatchErr); + + /* test result */ + IPP_BAD_PTR1_RET(pResult); + *pResult = ippECValid; + + /* private key validation request */ + if( pPrivate ) { + pPrivate = (IppsBigNumState*)( IPP_ALIGNED_PTR(pPrivate, ALIGN_VAL) ); + IPP_BADARG_RET(!BN_VALID_ID(pPrivate), ippStsContextMatchErr); + + { + BNU_CHUNK_T* pS = BN_NUMBER(pPrivate); + int nsS = BN_SIZE(pPrivate); + + BNU_CHUNK_T* pOrder = MOD_MODULUS(ECP_MONT_R(pEC)); + int orderLen = BITS_BNU_CHUNK(ECP_ORDBITSIZE(pEC)); + + /* check private key */ + if(cpEqu_BNU_CHUNK(pS, nsS, 0) || 0<=cpCmp_BNU(pS, nsS, pOrder, orderLen)) { + *pResult = ippECInvalidPrivateKey; + return ippStsNoErr; + } + } + } + + /* public key validation request */ + if( pPublic ) { + IPP_BADARG_RET( !ECP_POINT_TEST_ID(pPublic), ippStsContextMatchErr ); + IPP_BADARG_RET(ECP_POINT_FELEN(pPublic)<GFP_FELEN(GFP_PMA(ECP_GFP(pEC))), ippStsRangeErr); + + { + IppsGFpECPoint T; + cpEcGFpInitPoint(&T, cpEcGFpGetPool(1, pEC),0, pEC); + + do { + /* public != point_at_Infinity */ + if( gfec_IsPointAtInfinity(pPublic) ) { + *pResult = ippECPointIsAtInfinite; + break; + } + /* order*public == point_at_Infinity */ + gfec_MulPoint(&T, pPublic, MOD_MODULUS(ECP_MONT_R(pEC)), BITS_BNU_CHUNK(ECP_ORDBITSIZE(pEC)), /*0,*/ pEC, pScratchBuffer); + if( !gfec_IsPointAtInfinity(&T) ) { + *pResult = ippECInvalidPublicKey; + break; + } + /* addition test: private*BasePoint == public */ + if(pPrivate) { + gfec_MulBasePoint(&T, BN_NUMBER(pPrivate), BN_SIZE(pPrivate), pEC, pScratchBuffer); + if(!gfec_ComparePoint(&T, pPublic, pEC)) + *pResult = ippECInvalidKeyPair; + } + } while(0); + + cpEcGFpReleasePool(1, pEC); + } + } + + return ippStsNoErr; +} |