| /******************************************************************************* |
| * 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: |
| // ippsGFpECInitStd128r1() |
| // |
| */ |
| |
| #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: ippsGFpECInitStd128r1 |
| // |
| // Purpose: Initializes the context of EC128r1 |
| // |
| // 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, ippsGFpECInitStd128r1,(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(secp128r1_p, BITS_BNU_CHUNK(128), GFP_MODULUS(pGFE), BITS_BNU_CHUNK(128)), ippStsBadArgErr); |
| |
| pEC = (IppsGFpECState*)( IPP_ALIGNED_PTR(pEC, ECGFP_ALIGNMENT) ); |
| |
| ippsGFpECInit(pGFp, NULL, NULL, pEC); |
| cpGFpECSetStd(BITS_BNU_CHUNK(128), secp128r1_a, |
| BITS_BNU_CHUNK(128), secp128r1_b, |
| BITS_BNU_CHUNK(128), secp128r1_gx, |
| BITS_BNU_CHUNK(128), secp128r1_gy, |
| BITS_BNU_CHUNK(128), secp128r1_r, |
| secp128r1_h, |
| pEC); |
| |
| return ippStsNoErr; |
| } |
| } |