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Diffstat (limited to 'ext/ipp/sources/ippcp/pcpgfpecinitstd224r1.c')
| -rw-r--r-- | ext/ipp/sources/ippcp/pcpgfpecinitstd224r1.c | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/ext/ipp/sources/ippcp/pcpgfpecinitstd224r1.c b/ext/ipp/sources/ippcp/pcpgfpecinitstd224r1.c new file mode 100644 index 0000000..e6a9b2c --- /dev/null +++ b/ext/ipp/sources/ippcp/pcpgfpecinitstd224r1.c @@ -0,0 +1,141 @@ +/******************************************************************************* +* 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. +// EC over GF(p^m) definitinons +// +// Context: +// ippsGFpECInitStd224r1() +// +*/ + +#include "owndefs.h" +#include "owncp.h" +#include "pcpgfpecstuff.h" +#include "pcpeccp.h" + + + + +static void cpGFpECSetStd(int aLen, const BNU_CHUNK_T* pA, + int bLen, const BNU_CHUNK_T* pB, + int xLen, const BNU_CHUNK_T* pX, + int yLen, const BNU_CHUNK_T* pY, + int rLen, const BNU_CHUNK_T* pR, + BNU_CHUNK_T h, + IppsGFpECState* pEC) +{ + IppsGFpState* pGF = ECP_GFP(pEC); + gsModEngine* pGFE = GFP_PMA(pGF); + int elemLen = GFP_FELEN(pGFE); + + IppsGFpElement elmA, elmB; + IppsBigNumState R, H; + + /* convert A ans B coeffs into GF elements */ + cpGFpElementConstruct(&elmA, cpGFpGetPool(1, pGFE), elemLen); + cpGFpElementConstruct(&elmB, cpGFpGetPool(1, pGFE), elemLen); + ippsGFpSetElement((Ipp32u*)pA, BITS2WORD32_SIZE(BITSIZE_BNU(pA,aLen)), &elmA, pGF); + ippsGFpSetElement((Ipp32u*)pB, BITS2WORD32_SIZE(BITSIZE_BNU(pB,bLen)), &elmB, pGF); + /* and set EC */ + ippsGFpECSet(&elmA, &elmB, pEC); + + /* construct R and H */ + cpConstructBN(&R, rLen, (BNU_CHUNK_T*)pR, NULL); + cpConstructBN(&H, 1, &h, NULL); + /* convert GX ans GY coeffs into GF elements */ + ippsGFpSetElement((Ipp32u*)pX, BITS2WORD32_SIZE(BITSIZE_BNU(pX,xLen)), &elmA, pGF); + ippsGFpSetElement((Ipp32u*)pY, BITS2WORD32_SIZE(BITSIZE_BNU(pY,yLen)), &elmB, pGF); + /* and init EC subgroup */ + ippsGFpECSetSubgroup(&elmA, &elmB, &R, &H, pEC); +} + +/*F* +// Name: ippsGFpECInitStd224r1 +// +// Purpose: Initializes the context of EC224r1 +// +// Returns: Reason: +// ippStsNullPtrErr NULL == pEC +// NULL == pGFp +// +// ippStsContextMatchErr invalid pGFp->idCtx +// +// ippStsBadArgErr pGFp does not specify the finite field over which the given +// standard elliptic curve is defined +// +// ippStsNoErr no error +// +// Parameters: +// pGFp Pointer to the IppsGFpState context of the underlying finite field +// pEC Pointer to the context of the elliptic curve being initialized. +// +*F*/ + +IPPFUN(IppStatus, ippsGFpECInitStd224r1,(const IppsGFpState* pGFp, IppsGFpECState* pEC)) +{ + IPP_BAD_PTR2_RET(pGFp, pEC); + + pGFp = (IppsGFpState*)( IPP_ALIGNED_PTR(pGFp, GFP_ALIGNMENT) ); + IPP_BADARG_RET( !GFP_TEST_ID(pGFp), ippStsContextMatchErr ); + + { + gsModEngine* pGFE = GFP_PMA(pGFp); + + /* test if GF is prime GF */ + IPP_BADARG_RET(!GFP_IS_BASIC(pGFE), ippStsBadArgErr); + /* test underlying prime value*/ + IPP_BADARG_RET(cpCmp_BNU(secp224r1_p, BITS_BNU_CHUNK(224), GFP_MODULUS(pGFE), BITS_BNU_CHUNK(224)), ippStsBadArgErr); + + pEC = (IppsGFpECState*)( IPP_ALIGNED_PTR(pEC, ECGFP_ALIGNMENT) ); + + ippsGFpECInit(pGFp, NULL, NULL, pEC); + cpGFpECSetStd(BITS_BNU_CHUNK(224), secp224r1_a, + BITS_BNU_CHUNK(224), secp224r1_b, + BITS_BNU_CHUNK(224), secp224r1_gx, + BITS_BNU_CHUNK(224), secp224r1_gy, + BITS_BNU_CHUNK(224), secp224r1_r, + secp224r1_h, + pEC); + + return ippStsNoErr; + } +} |