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- /*
- * Copyright (C) 2016 Intel Corporation. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
- #include "owndefs.h"
- #include "owncp.h"
- #include "pcpeccp.h"
- #include "pcpeccppoint.h"
- #include "pcpbnresource.h"
- #include "pcpeccpmethod.h"
- #include "pcpeccpsscm.h"
- #include "pcptool.h"
- /*F*
- // Name: ippsECCPGetSize
- //
- // Purpose: Returns size of ECC context (bytes).
- //
- // Returns: Reason:
- // ippStsNullPtrErr NULL == pSize
- //
- // ippStsSizeErr 2>feBitSize
- //
- // ippStsNoErr no errors
- //
- // Parameters:
- // feBitSize size of field element (bits)
- // pSize pointer to the size of internal ECC context
- //
- *F*/
- IPPFUN(IppStatus, ippsECCPGetSize, (int feBitSize, int *pSize))
- {
- /* test size's pointer */
- IPP_BAD_PTR1_RET(pSize);
- /* test size of field element */
- IPP_BADARG_RET((2>feBitSize || feBitSize>EC_GFP_MAXBITSIZE), ippStsSizeErr);
- {
- int bn1Size;
- int bn2Size;
- int pointSize;
- int mont1Size;
- int mont2Size;
- int primeSize;
- int listSize;
- /* size of field element */
- int gfeSize = BITS2WORD32_SIZE(feBitSize);
- /* size of order */
- int ordSize = BITS2WORD32_SIZE(feBitSize+1);
- /* size of sscm buffer */
- int w = cpECCP_OptimalWinSize(feBitSize+1);
- int nPrecomputed = 1<<w;
- int sscmBuffSize = nPrecomputed*(BITS_BNU_CHUNK(feBitSize)*3*sizeof(BNU_CHUNK_T)) +(CACHE_LINE_SIZE-1);
- /* size of BigNum over GF(p) */
- ippsBigNumGetSize(gfeSize, &bn1Size);
- /* size of BigNum over GF(r) */
- ippsBigNumGetSize(ordSize, &bn2Size);
- /* size of EC point over GF(p) */
- ippsECCPPointGetSize(feBitSize, &pointSize);
- /* size of montgomery engine over GF(p) */
- ippsMontGetSize(ippBinaryMethod, BITS2WORD32_SIZE(feBitSize), &mont1Size);
- /* size of montgomery engine over GF(r) */
- ippsMontGetSize(ippBinaryMethod, BITS2WORD32_SIZE(feBitSize+1), &mont2Size);
- /* size of prime engine */
- ippsPrimeGetSize(feBitSize+1, &primeSize);
- /* size of big num list (big num in the list preserve 32 bit word) */
- listSize = cpBigNumListGetSize(feBitSize+1, BNLISTSIZE);
- *pSize = sizeof(IppsECCPState)
- +sizeof(ECCP_METHOD) /* methods */
- +bn1Size /* prime */
- +bn1Size /* A */
- +bn1Size /* B */
- +bn1Size /* GX */
- +bn1Size /* GY */
- +bn2Size /* order */
- +bn1Size /* Aenc */
- +bn1Size /* Benc */
- +mont1Size /* montgomery(p) */
- +pointSize /* Genc */
- +bn2Size /* cofactor */
- +mont2Size /* montgomery(r) */
- +bn2Size /* private */
- +pointSize /* public */
- +bn2Size /* eph private */
- +pointSize /* eph public */
- +primeSize /* prime engine */
- +sscmBuffSize /* sscm buffer */
- +listSize /* temp big num */
- +(ALIGN_VAL-1);
- }
- return ippStsNoErr;
- }
- /*F*
- // Name: ippsECCPInit
- //
- // Purpose: Init ECC context.
- //
- // Returns: Reason:
- // ippStsNullPtrErr NULL == pECC
- //
- // ippStsSizeErr 2>feBitSize
- //
- // ippStsNoErr no errors
- //
- // Parameters:
- // feBitSize size of field element (bits)
- // pECC pointer to the ECC context
- //
- *F*/
- IPPFUN(IppStatus, ippsECCPInit, (int feBitSize, IppsECCPState* pECC))
- {
- /* test pECC pointer */
- IPP_BAD_PTR1_RET(pECC);
- /* use aligned EC context */
- pECC = (IppsECCPState*)( IPP_ALIGNED_PTR(pECC, ALIGN_VAL) );
- /* test size of field element */
- IPP_BADARG_RET((2>feBitSize || feBitSize>EC_GFP_MAXBITSIZE), ippStsSizeErr);
- /* clear context */
- PaddBlock(0, pECC, sizeof(IppsECCPState));
- /* context ID */
- ECP_ID(pECC) = idCtxECCP;
- /* generic EC */
- ECP_TYPE(pECC) = IppECCArbitrary;
- /* size of field element & BP order */
- ECP_GFEBITS(pECC) = feBitSize;
- ECP_ORDBITS(pECC) = feBitSize+1;
- /*
- // init other context fields
- */
- {
- int bn1Size;
- int bn2Size;
- int pointSize;
- int mont1Size;
- int mont2Size;
- int primeSize;
- /* size of field element */
- int gfeSize = BITS2WORD32_SIZE(feBitSize);
- /* size of order */
- int ordSize = BITS2WORD32_SIZE(feBitSize+1);
- /* size of sscm buffer */
- int w = cpECCP_OptimalWinSize(feBitSize+1);
- int nPrecomputed = 1<<w;
- int sscmBuffSize = nPrecomputed*(BITS_BNU_CHUNK(feBitSize)*3*sizeof(BNU_CHUNK_T)) +(CACHE_LINE_SIZE-1);
- Ipp8u* ptr = (Ipp8u*)pECC;
- /* size of BigNum over GF(p) */
- ippsBigNumGetSize(gfeSize, &bn1Size);
- /* size of BigNum over GF(r) */
- ippsBigNumGetSize(ordSize, &bn2Size);
- /* size of EC point over GF(p) */
- ippsECCPPointGetSize(feBitSize, &pointSize);
- /* size of montgomery engine over GF(p) */
- ippsMontGetSize(ippBinaryMethod, BITS2WORD32_SIZE(feBitSize), &mont1Size);
- /* size of montgomery engine over GF(r) */
- ippsMontGetSize(ippBinaryMethod, BITS2WORD32_SIZE(feBitSize+1), &mont2Size);
- /* size of prime engine */
- ippsPrimeGetSize(feBitSize+1, &primeSize);
- /* size of big num list */
- /* listSize = cpBigNumListGetSize(feBitSize+1+32, BNLISTSIZE); */
- /* allocate buffers */
- ptr += sizeof(IppsECCPState);
- ECP_METHOD(pECC) = (ECCP_METHOD*) (ptr);
- ptr += sizeof(ECCP_METHOD);
- ECP_PRIME(pECC) = (IppsBigNumState*) ( IPP_ALIGNED_PTR(ptr,ALIGN_VAL) );
- ptr += bn1Size;
- ECP_A(pECC) = (IppsBigNumState*) ( IPP_ALIGNED_PTR(ptr,ALIGN_VAL) );
- ptr += bn1Size;
- ECP_B(pECC) = (IppsBigNumState*) ( IPP_ALIGNED_PTR(ptr,ALIGN_VAL) );
- ptr += bn1Size;
- ECP_GX(pECC) = (IppsBigNumState*) ( IPP_ALIGNED_PTR(ptr,ALIGN_VAL) );
- ptr += bn1Size;
- ECP_GY(pECC) = (IppsBigNumState*) ( IPP_ALIGNED_PTR(ptr,ALIGN_VAL) );
- ptr += bn1Size;
- ECP_ORDER(pECC) = (IppsBigNumState*) ( IPP_ALIGNED_PTR(ptr,ALIGN_VAL) );
- ptr += bn2Size;
- ECP_AENC(pECC) = (IppsBigNumState*) ( IPP_ALIGNED_PTR(ptr,ALIGN_VAL) );
- ptr += bn1Size;
- ECP_BENC(pECC) = (IppsBigNumState*) ( IPP_ALIGNED_PTR(ptr,ALIGN_VAL) );
- ptr += bn1Size;
- ECP_PMONT(pECC) = (IppsMontState*) ( IPP_ALIGNED_PTR(ptr,ALIGN_VAL) );
- ptr += mont1Size;
- ECP_GENC(pECC) = (IppsECCPPointState*)( IPP_ALIGNED_PTR(ptr,ALIGN_VAL) );
- ptr += pointSize;
- ECP_COFACTOR(pECC)= (IppsBigNumState*) ( IPP_ALIGNED_PTR(ptr,ALIGN_VAL) );
- ptr += bn2Size;
- ECP_RMONT(pECC) = (IppsMontState*) ( IPP_ALIGNED_PTR(ptr,ALIGN_VAL) );
- ptr += mont2Size;
- ECP_PRIVATE(pECC) = (IppsBigNumState*) ( IPP_ALIGNED_PTR(ptr,ALIGN_VAL) );
- ptr += bn2Size;
- ECP_PUBLIC(pECC) = (IppsECCPPointState*)( IPP_ALIGNED_PTR(ptr,ALIGN_VAL) );
- ptr += pointSize;
- ECP_PRIVATE_E(pECC) = (IppsBigNumState*) ( IPP_ALIGNED_PTR(ptr,ALIGN_VAL) );
- ptr += bn2Size;
- ECP_PUBLIC_E(pECC) =(IppsECCPPointState*)( IPP_ALIGNED_PTR(ptr,ALIGN_VAL) );
- ptr += pointSize;
- ECP_PRIMARY(pECC) = (IppsPrimeState*) ( IPP_ALIGNED_PTR(ptr,ALIGN_VAL) );
- ptr += primeSize;
- ECP_SCCMBUFF(pECC) = (Ipp8u*) ( IPP_ALIGNED_PTR(ptr,CACHE_LINE_SIZE) );
- ptr += sscmBuffSize;
- ECP_BNCTX(pECC) = (BigNumNode*) ( IPP_ALIGNED_PTR(ptr,ALIGN_VAL) );
- /* init buffers */
- ippsBigNumInit(gfeSize, ECP_PRIME(pECC));
- ippsBigNumInit(gfeSize, ECP_A(pECC));
- ippsBigNumInit(gfeSize, ECP_B(pECC));
- ippsBigNumInit(gfeSize, ECP_GX(pECC));
- ippsBigNumInit(gfeSize, ECP_GY(pECC));
- ippsBigNumInit(ordSize, ECP_ORDER(pECC));
- ippsBigNumInit(gfeSize, ECP_AENC(pECC));
- ippsBigNumInit(gfeSize, ECP_BENC(pECC));
- ippsMontInit(ippBinaryMethod, BITS2WORD32_SIZE(feBitSize), ECP_PMONT(pECC));
- ippsECCPPointInit(feBitSize, ECP_GENC(pECC));
- ippsBigNumInit(ordSize, ECP_COFACTOR(pECC));
- ippsMontInit(ippBinaryMethod, BITS2WORD32_SIZE(feBitSize+1), ECP_RMONT(pECC));
- ippsBigNumInit(ordSize, ECP_PRIVATE(pECC));
- ippsECCPPointInit(feBitSize,ECP_PUBLIC(pECC));
- ippsBigNumInit(ordSize, ECP_PRIVATE_E(pECC));
- ippsECCPPointInit(feBitSize,ECP_PUBLIC_E(pECC));
- cpBigNumListInit(feBitSize+1, BNLISTSIZE, ECP_BNCTX(pECC));
- }
- return ippStsNoErr;
- }
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