diff options
Diffstat (limited to 'ext/ipp/sources/ippcp/src/pcpmontgomeryca.c')
| -rw-r--r-- | ext/ipp/sources/ippcp/src/pcpmontgomeryca.c | 424 |
1 files changed, 0 insertions, 424 deletions
diff --git a/ext/ipp/sources/ippcp/src/pcpmontgomeryca.c b/ext/ipp/sources/ippcp/src/pcpmontgomeryca.c deleted file mode 100644 index e22ae7e..0000000 --- a/ext/ipp/sources/ippcp/src/pcpmontgomeryca.c +++ /dev/null @@ -1,424 +0,0 @@ -/*############################################################################ - # Copyright 1999-2018 Intel Corporation - # - # Licensed under the Apache License, Version 2.0 (the "License"); - # 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 -// Cryptographic Primitives (ippcp) -// -// Contents: -// -*/ - -#include "owndefs.h" -#include "owncp.h" -#include "pcpbn.h" -#include "pcpmontgomery.h" -#include "pcpmulbnukara.h" -#include "pcptool.h" - -//gres: temporary excluded: #include <assert.h> - -/* Auxilirary function */ -__INLINE int cpGetBitSize(Ipp32u offset, Ipp32u val) -{ - int bitSize = 32; - if (val == 0) return 0; - while ((val & (1 << bitSize)) == 0) bitSize--; - return offset + bitSize; -} - -IppStatus cpMontGetSize(cpSize maxLen32, int poolLength, cpSize* pCtxSize) -{ - { - int size = 0; - int maxBitSize = maxLen32 << 5; - gsModEngineGetSize(maxBitSize, poolLength, &size); - - *pCtxSize = sizeof(IppsMontState) - + (cpSize)size - + MONT_ALIGNMENT-1; - - return ippStsNoErr; - } -} - - -IppStatus cpMontInit(int maxLen32, int poolLength, IppsMontState* pMont) -{ - pMont = (IppsMontState*)( IPP_ALIGNED_PTR(pMont, MONT_ALIGNMENT) ); - { - int maxBitSize = ((maxLen32) << 5); - - MNT_ROOM( pMont ) = INTERNAL_BNU_LENGTH(maxLen32); - MNT_ENGINE ( pMont ) = (gsModEngine*)((Ipp8u*)pMont + sizeof(IppsMontState)); - - MNT_ID(pMont) = idCtxMontgomery; - - gsModEngineInit(MNT_ENGINE(pMont), NULL, maxBitSize, poolLength, gsModArithMont()); - - return ippStsNoErr; - } -} - -IppStatus cpMontSet(const Ipp32u* pModulus, cpSize len32, IppsMontState* pMont) -{ - IPP_BADARG_RET(len32<1, ippStsLengthErr); - - /* modulus is not an odd number */ - IPP_BADARG_RET((pModulus[0] & 1) == 0, ippStsBadModulusErr); - IPP_BADARG_RET(MNT_ROOM(pMont)<(int)(INTERNAL_BNU_LENGTH(len32)), ippStsOutOfRangeErr); - - { - const int poolLen = MOD_MAXPOOL(MNT_ENGINE(pMont)); - int modulusBitSize = cpGetBitSize((len32 - 1) << 5, pModulus[len32-1]); - - gsModEngineInit(MNT_ENGINE(pMont), pModulus, modulusBitSize, poolLen, gsModArithMont()); - - return ippStsNoErr; - } -} - -/*F* -// Name: ippsMontGetSize -// -// Purpose: Specifies size of buffer in bytes. -// -// Returns: Reason: -// ippStsNullPtrErr pCtxSize==NULL -// ippStsLengthErr maxLen32 < 1 -// maxLen32 > BITS2WORD32_SIZE(BN_MAXBITSIZE) -// ippStsNoErr no errors -// -// Parameters: -// method selected exponential method (unused parameter) -// maxLen32 max modulus length (in Ipp32u chunks) -// pCtxSize size of context -// -// Notes: Function always use method=ippBinaryMethod, -// so this parameter is ignored -*F*/ -IPPFUN(IppStatus, ippsMontGetSize, (IppsExpMethod method, cpSize maxLen32, cpSize* pCtxSize)) -{ - IPP_BAD_PTR1_RET(pCtxSize); - IPP_BADARG_RET(maxLen32<1 || maxLen32>BITS2WORD32_SIZE(BN_MAXBITSIZE), ippStsLengthErr); - - UNREFERENCED_PARAMETER(method); - - { - return cpMontGetSize(maxLen32, MONT_DEFAULT_POOL_LENGTH, pCtxSize); - } -} - -/*F* -// Name: ippsMontInit -// -// Purpose: Initializes the symbolic data structure and partitions the -// specified buffer space. -// -// Returns: Reason: -// ippStsNullPtrErr pMont==NULL -// ippStsLengthErr maxLen32 < 1 -// maxLen32 > BITS2WORD32_SIZE(BN_MAXBITSIZE) -// ippStsNoErr no errors -// -// Parameters: -// method selected exponential method (unused parameter) -// maxLen32 max modulus length (in Ipp32u chunks) -// pMont pointer to Montgomery context -*F*/ -IPPFUN(IppStatus, ippsMontInit,(IppsExpMethod method, int maxLen32, IppsMontState* pMont)) -{ - IPP_BADARG_RET(maxLen32<1 || maxLen32>BITS2WORD32_SIZE(BN_MAXBITSIZE), ippStsLengthErr); - - IPP_BAD_PTR1_RET(pMont); - - UNREFERENCED_PARAMETER(method); - - { - return cpMontInit(maxLen32, MONT_DEFAULT_POOL_LENGTH, pMont); - } -} - -void cpPackMontCtx(const IppsMontState* pCtx, Ipp8u* pBuffer) -{ - IppsMontState* pAlignedBuffer = (IppsMontState*)(IPP_ALIGNED_PTR((pBuffer), MONT_ALIGNMENT)); - - /* size of context (bytes) */ - int ctxSize = sizeof(IppsMontState); - CopyBlock(pCtx, pAlignedBuffer, ctxSize); - - pBuffer = (Ipp8u*)pAlignedBuffer + sizeof(IppsMontState); - - gsPackModEngineCtx(MNT_ENGINE(pCtx), pBuffer); -} - -void cpUnpackMontCtx(const Ipp8u* pBuffer, IppsMontState* pCtx) -{ - IppsMontState* pAlignedBuffer = (IppsMontState*)(IPP_ALIGNED_PTR((pBuffer), MONT_ALIGNMENT)); - - /* size of context (bytes) */ - int ctxSize = sizeof(IppsMontState); - CopyBlock(pAlignedBuffer, pCtx, ctxSize); - - pBuffer = (Ipp8u*)pAlignedBuffer + sizeof(IppsMontState); - - gsUnpackModEngineCtx(pBuffer, MNT_ENGINE(pCtx)); -} - - -/*F* -// Name: ippsMontSet -// -// Purpose: Setup modulus value -// -// Returns: Reason: -// ippStsNullPtrErr pMont==NULL -// pModulus==NULL -// ippStsContextMatchErr !MNT_VALID_ID() -// ippStsLengthErr len32<1 -// ippStsNoErr no errors -// -// Parameters: -// pModulus pointer to the modulus buffer -// len32 length of the modulus (in Ipp32u chunks). -// pMont pointer to the context -*F*/ -IPPFUN(IppStatus, ippsMontSet,(const Ipp32u* pModulus, cpSize len32, IppsMontState* pMont)) -{ - IPP_BAD_PTR2_RET(pModulus, pMont); - pMont = (IppsMontState*)(IPP_ALIGNED_PTR((pMont), MONT_ALIGNMENT)); - IPP_BADARG_RET(!MNT_VALID_ID(pMont), ippStsContextMatchErr); - - IPP_BADARG_RET(len32<1, ippStsLengthErr); - - /* modulus is not an odd number */ - IPP_BADARG_RET((pModulus[0] & 1) == 0, ippStsBadModulusErr); - IPP_BADARG_RET(((Ipp32u)MNT_ROOM(pMont) < INTERNAL_BNU_LENGTH(len32)), ippStsOutOfRangeErr); - - { - return cpMontSet(pModulus, len32, pMont); - } -} - -/*F* -// Name: ippsMontGet -// -// Purpose: Extracts modulus. -// -// Returns: Reason: -// ippStsNullPtrErr pMont==NULL -// pModulus==NULL -// pLen32==NULL -// ippStsContextMatchErr !MNT_VALID_ID() -// ippStsNoErr no errors -// -// Parameters: -// pModulus pointer to the modulus buffer -// pLen32 pointer to the modulus length (in Ipp32u chunks). -// pMont pointer to the context -*F*/ -IPPFUN(IppStatus, ippsMontGet,(Ipp32u* pModulus, cpSize* pLen32, const IppsMontState* pMont)) -{ - IPP_BAD_PTR3_RET(pMont, pModulus, pLen32); - - pMont = (IppsMontState*)(IPP_ALIGNED_PTR((pMont), MONT_ALIGNMENT)); - IPP_BADARG_RET(!MNT_VALID_ID(pMont), ippStsContextMatchErr); - - { - cpSize len32 = MOD_LEN(MNT_ENGINE(pMont))*sizeof(BNU_CHUNK_T)/sizeof(Ipp32u); - Ipp32u* bnData = (Ipp32u*) MOD_MODULUS( MNT_ENGINE(pMont) ); - - FIX_BNU(bnData, len32); - COPY_BNU(pModulus, bnData, len32); - *pLen32 = len32; - - return ippStsNoErr; - } -} - -/*F* -// Name: ippsMontForm -// -// Purpose: Converts input into Montgomery domain. -// -// Returns: Reason: -// ippStsNullPtrErr pMont==NULL -// pA==NULL -// pR==NULL -// ippStsContextMatchErr !MNT_VALID_ID() -// !BN_VALID_ID(pA) -// !BN_VALID_ID(pR) -// ippStsBadArgErr A < 0. -// ippStsScaleRangeErr A >= Modulus. -// ippStsOutOfRangeErr R can't hold result -// ippStsNoErr no errors -// -// Parameters: -// pA pointer to the input [0, modulus-1] -// pMont Montgomery context -// pR pointer to the output (A*R mod modulus) -*F*/ -IPPFUN(IppStatus, ippsMontForm,(const IppsBigNumState* pA, IppsMontState* pMont, IppsBigNumState* pR)) -{ - IPP_BAD_PTR3_RET(pMont, pA, pR); - - pMont = (IppsMontState*)(IPP_ALIGNED_PTR((pMont), MONT_ALIGNMENT)); - pA = (IppsBigNumState*)( IPP_ALIGNED_PTR(pA, BN_ALIGNMENT) ); - pR = (IppsBigNumState*)( IPP_ALIGNED_PTR(pR, BN_ALIGNMENT) ); - - IPP_BADARG_RET(!MNT_VALID_ID(pMont), ippStsContextMatchErr); - IPP_BADARG_RET(!BN_VALID_ID(pA), ippStsContextMatchErr); - IPP_BADARG_RET(!BN_VALID_ID(pR), ippStsContextMatchErr); - - IPP_BADARG_RET(BN_SIGN(pA) != ippBigNumPOS, ippStsBadArgErr); - IPP_BADARG_RET(cpCmp_BNU(BN_NUMBER(pA), BN_SIZE(pA), MOD_MODULUS( MNT_ENGINE(pMont) ), MOD_LEN( MNT_ENGINE(pMont) )) >= 0, ippStsScaleRangeErr); - IPP_BADARG_RET(BN_ROOM(pR) < MOD_LEN( MNT_ENGINE(pMont) ), ippStsOutOfRangeErr); - - { - const int usedPoolLen = 1; - cpSize nsM = MOD_LEN( MNT_ENGINE(pMont) ); - BNU_CHUNK_T* pDataA = gsModPoolAlloc(MNT_ENGINE(pMont), usedPoolLen); - //gres: temporary excluded: assert(NULL!=pDataA); - - ZEXPAND_COPY_BNU(pDataA, nsM, BN_NUMBER(pA), BN_SIZE(pA)); - - MOD_METHOD( MNT_ENGINE(pMont) )->encode(BN_NUMBER(pR), pDataA, MNT_ENGINE(pMont)); - - FIX_BNU(BN_NUMBER(pR), nsM); - BN_SIZE(pR) = nsM; - BN_SIGN(pR) = ippBigNumPOS; - - gsModPoolFree(MNT_ENGINE(pMont), usedPoolLen); - } - - return ippStsNoErr; -} - - -/*F* -// Name: ippsMontMul -// -// Purpose: Computes Montgomery modular multiplication for positive big -// number integers of Montgomery form. The following pseudocode -// represents this function: -// r <- ( a * b * R^(-1) ) mod m -// -// Returns: Reason: -// ippStsNoErr Returns no error. -// ippStsNullPtrErr Returns an error when pointers are null. -// ippStsBadArgErr Returns an error when a or b is a negative integer. -// ippStsScaleRangeErr Returns an error when a or b is more than m. -// ippStsOutOfRangeErr Returns an error when IppsBigNumState *r is larger than -// IppsMontState *m. -// ippStsContextMatchErr Returns an error when the context parameter does -// not match the operation. -// -// Parameters: -// a Multiplicand within the range [0, m - 1]. -// b Multiplier within the range [0, m - 1]. -// m Modulus. -// r Montgomery multiplication result. -// -// Notes: The size of IppsBigNumState *r should not be less than the data -// length of the modulus m. -*F*/ -IPPFUN(IppStatus, ippsMontMul, (const IppsBigNumState* pA, const IppsBigNumState* pB, IppsMontState* pMont, IppsBigNumState* pR)) -{ - IPP_BAD_PTR4_RET(pA, pB, pMont, pR); - - pMont = (IppsMontState*)(IPP_ALIGNED_PTR((pMont), MONT_ALIGNMENT)); - pA = (IppsBigNumState*)( IPP_ALIGNED_PTR(pA, BN_ALIGNMENT) ); - pB = (IppsBigNumState*)( IPP_ALIGNED_PTR(pB, BN_ALIGNMENT) ); - pR = (IppsBigNumState*)( IPP_ALIGNED_PTR(pR, BN_ALIGNMENT) ); - - IPP_BADARG_RET(!MNT_VALID_ID(pMont), ippStsContextMatchErr); - IPP_BADARG_RET(!BN_VALID_ID(pA), ippStsContextMatchErr); - IPP_BADARG_RET(!BN_VALID_ID(pB), ippStsContextMatchErr); - IPP_BADARG_RET(!BN_VALID_ID(pR), ippStsContextMatchErr); - - IPP_BADARG_RET(BN_NEGATIVE(pA) || BN_NEGATIVE(pB), ippStsBadArgErr); - IPP_BADARG_RET(cpCmp_BNU(BN_NUMBER(pA), BN_SIZE(pA), MOD_MODULUS( MNT_ENGINE(pMont) ), MOD_LEN( MNT_ENGINE(pMont) )) >= 0, ippStsScaleRangeErr); - IPP_BADARG_RET(cpCmp_BNU(BN_NUMBER(pB), BN_SIZE(pB), MOD_MODULUS( MNT_ENGINE(pMont) ), MOD_LEN( MNT_ENGINE(pMont) )) >= 0, ippStsScaleRangeErr); - IPP_BADARG_RET(BN_ROOM(pR) < MOD_LEN( MNT_ENGINE(pMont) ), ippStsOutOfRangeErr); - - { - const int usedPoolLen = 2; - cpSize nsM = MOD_LEN( MNT_ENGINE(pMont) ); - BNU_CHUNK_T* pDataR = BN_NUMBER(pR); - BNU_CHUNK_T* pDataA = gsModPoolAlloc(MNT_ENGINE(pMont), usedPoolLen); - BNU_CHUNK_T* pDataB = pDataA + nsM; - //gres: temporary excluded: assert(NULL!=pDataA); - - ZEXPAND_COPY_BNU(pDataA, nsM, BN_NUMBER(pA), BN_SIZE(pA)); - ZEXPAND_COPY_BNU(pDataB, nsM, BN_NUMBER(pB), BN_SIZE(pB)); - - MOD_METHOD( MNT_ENGINE(pMont) )->mul(pDataR, pDataA, pDataB, MNT_ENGINE(pMont)); - - gsModPoolFree(MNT_ENGINE(pMont), usedPoolLen); - - FIX_BNU(pDataR, nsM); - BN_SIZE(pR) = nsM; - BN_SIGN(pR) = ippBigNumPOS; - - return ippStsNoErr; - } -} - - -/******************************************************************************* -// Name: ippsMontExp -// Description: ippsMontExp() computes the Montgomery exponentiation with exponent -// IppsBigNumState *e to the given big number integer of Montgomery form -// IppsBigNumState *a with respect to the modulus IppsMontState *m. -// Input Arguments: a - big number integer of Montgomery form within the -// range [0,m-1] -// e - big number exponent -// m - Montgomery modulus of IppsMontState. -// Output Arguments: r - the Montgomery exponentiation result. -// Returns: IPPC_STATUS_OK - No Error -// IPPC_STATUS_MONT_BAD_MODULUS - If a>m or b>m or m>R or P_MONT *m has -// not been initialized by the primitive -// function ippsMontInit( ). -// IPPC_STATUS_BAD_ARG - Bad Arguments -// Notes: IppsBigNumState *r should possess enough memory space as to hold the result -// of the operation. i.e. both pointers r->d and r->buffer should possess -// no less than (m->n->length) number of 32-bit words. -*******************************************************************************/ -IPPFUN(IppStatus, ippsMontExp, (const IppsBigNumState* pA, const IppsBigNumState* pE, IppsMontState* pMont, IppsBigNumState* pR)) -{ - IPP_BAD_PTR4_RET(pA, pE, pMont, pR); - - pMont = (IppsMontState*)(IPP_ALIGNED_PTR((pMont), MONT_ALIGNMENT)); - pA = (IppsBigNumState*)( IPP_ALIGNED_PTR(pA, BN_ALIGNMENT) ); - pE = (IppsBigNumState*)( IPP_ALIGNED_PTR(pE, BN_ALIGNMENT) ); - pR = (IppsBigNumState*)( IPP_ALIGNED_PTR(pR, BN_ALIGNMENT) ); - - IPP_BADARG_RET(!MNT_VALID_ID(pMont), ippStsContextMatchErr); - IPP_BADARG_RET(!BN_VALID_ID(pA), ippStsContextMatchErr); - IPP_BADARG_RET(!BN_VALID_ID(pE), ippStsContextMatchErr); - IPP_BADARG_RET(!BN_VALID_ID(pR), ippStsContextMatchErr); - - IPP_BADARG_RET(BN_ROOM(pR) < MOD_LEN( MNT_ENGINE(pMont) ), ippStsOutOfRangeErr); - /* check a */ - IPP_BADARG_RET(BN_NEGATIVE(pA), ippStsBadArgErr); - IPP_BADARG_RET(cpCmp_BNU(BN_NUMBER(pA), BN_SIZE(pA), MOD_MODULUS( MNT_ENGINE(pMont) ), MOD_LEN( MNT_ENGINE(pMont) )) >= 0, ippStsScaleRangeErr); - /* check e */ - IPP_BADARG_RET(BN_NEGATIVE(pE), ippStsBadArgErr); - - cpMontExpBin_BN(pR, pA, pE, MNT_ENGINE( pMont) ); - - return ippStsNoErr; -} |