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/*******************************************************************************
* Copyright 2002-2018 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
// Cryptographic Primitives (ippcp)
//
//
*/
#if !defined(_CP_MONTGOMETRY_H)
#define _CP_MONTGOMETRY_H
#include "pcpbn.h"
#include "gsmodstuff.h"
//tbcd: temporary excluded: #include <assert.h>
#define MONT_DEFAULT_POOL_LENGTH (6)
/*
// Montgomery spec structure
*/
struct _cpMontgomery
{
IppCtxId idCtx; /* Montgomery spec identifier */
cpSize maxLen; /* Maximum length of modulus being stored */
gsModEngine* pEngine; /* Modular arith engine structure */
};
/* accessory macros */
#define MNT_ID(eng) ((eng)->idCtx)
#define MNT_ROOM(eng) ((eng)->maxLen)
#define MNT_ENGINE(eng) ((eng)->pEngine)
#define MNT_VALID_ID(eng) (MNT_ID((eng))==idCtxMontgomery)
/* default methos */
#define EXPONENT_METHOD (ippBinaryMethod)
/* alignment */
#define MONT_ALIGNMENT ((int)(sizeof(void*)))
/*
// Pacp/unpack Montgomery context
*/
#define cpPackMontCtx OWNAPI(cpPackMontCtx)
void cpPackMontCtx(const IppsMontState* pCtx, Ipp8u* pBuffer);
#define cpUnpackMontCtx OWNAPI(cpUnpackMontCtx)
void cpUnpackMontCtx(const Ipp8u* pBuffer, IppsMontState* pCtx);
/*
// Montgomery reduction, multiplication and squaring
*/
__INLINE void cpMontRed_BNU(BNU_CHUNK_T* pR,
BNU_CHUNK_T* pProduct,
gsModEngine* pModEngine)
{
MOD_METHOD( pModEngine )->red(pR, pProduct, pModEngine);
}
__INLINE void cpMontMul_BNU(BNU_CHUNK_T* pR,
const BNU_CHUNK_T* pA,
const BNU_CHUNK_T* pB,
gsModEngine* pModEngine)
{
MOD_METHOD( pModEngine )->mul(pR, pA, pB, pModEngine);
}
__INLINE cpSize cpMontMul_BNU_EX(BNU_CHUNK_T* pR,
const BNU_CHUNK_T* pA, cpSize nsA,
const BNU_CHUNK_T* pB, cpSize nsB,
gsModEngine* pModEngine)
{
const int usedPoolLen = 1;
cpSize nsM = MOD_LEN( pModEngine );
BNU_CHUNK_T* pDataR = pR;
BNU_CHUNK_T* pDataA = gsModPoolAlloc(pModEngine, usedPoolLen);
//tbcd: temporary excluded: assert(NULL!=pDataA);
ZEXPAND_COPY_BNU(pDataA, nsM, pA, nsA);
ZEXPAND_COPY_BNU(pDataR, nsM, pB, nsB);
MOD_METHOD( pModEngine )->mul(pDataR, pDataA, pDataR, pModEngine);
gsModPoolFree(pModEngine, usedPoolLen);
return nsM;
}
__INLINE void cpMontSqr_BNU(BNU_CHUNK_T* pR,
const BNU_CHUNK_T* pA,
gsModEngine* pModEngine)
{
MOD_METHOD( pModEngine )->sqr(pR, pA, pModEngine);
}
__INLINE void cpMontSqr_BNU_EX(BNU_CHUNK_T* pR,
const BNU_CHUNK_T* pA, cpSize nsA,
gsModEngine* pModEngine)
{
cpSize nsM = MOD_LEN( pModEngine );
ZEXPAND_COPY_BNU(pR, nsM, pA, nsA);
MOD_METHOD( pModEngine )->sqr(pR, pR, pModEngine);
}
/*
// Montgomery encoding/decoding
*/
__INLINE cpSize cpMontEnc_BNU(BNU_CHUNK_T* pR,
const BNU_CHUNK_T* pXreg,
gsModEngine* pModEngine)
{
cpSize nsM = MOD_LEN(pModEngine);
MOD_METHOD( pModEngine )->encode(pR, pXreg, pModEngine);
FIX_BNU(pR, nsM);
return nsM;
}
__INLINE cpSize cpMontEnc_BNU_EX(BNU_CHUNK_T* pR,
const BNU_CHUNK_T* pXreg, cpSize nsX,
gsModEngine* pModEngine)
{
cpSize nsM = MOD_LEN(pModEngine);
ZEXPAND_COPY_BNU(pR, nsM, pXreg, nsX);
MOD_METHOD( pModEngine )->encode(pR, pR, pModEngine);
FIX_BNU(pR, nsM);
return nsM;
}
__INLINE cpSize cpMontDec_BNU(BNU_CHUNK_T* pR,
const BNU_CHUNK_T* pXmont, cpSize nsX,
gsModEngine* pModEngine)
{
cpSize nsM = MOD_LEN( pModEngine );
ZEXPAND_COPY_BNU(pR, nsM, pXmont, nsX);
MOD_METHOD( pModEngine )->decode(pR, pR, pModEngine);
FIX_BNU(pR, nsM);
return nsM;
}
__INLINE void cpMontMul_BN(IppsBigNumState* pRbn,
const IppsBigNumState* pXbn,
const IppsBigNumState* pYbn,
gsModEngine* pModEngine)
{
cpSize nsM = cpMontMul_BNU_EX(BN_NUMBER(pRbn),
BN_NUMBER(pXbn), BN_SIZE(pXbn),
BN_NUMBER(pYbn), BN_SIZE(pYbn),
pModEngine);
FIX_BNU(BN_NUMBER(pRbn), nsM);
BN_SIZE(pRbn) = nsM;
BN_SIGN(pRbn) = ippBigNumPOS;
}
__INLINE void cpMontEnc_BN(IppsBigNumState* pRbn,
const IppsBigNumState* pXbn,
gsModEngine* pModEngine)
{
cpSize nsM = cpMontEnc_BNU_EX(BN_NUMBER(pRbn),
BN_NUMBER(pXbn), BN_SIZE(pXbn),
pModEngine);
BN_SIZE(pRbn) = nsM;
BN_SIGN(pRbn) = ippBigNumPOS;
}
__INLINE void cpMontDec_BN(IppsBigNumState* pRbn,
const IppsBigNumState* pXbn,
gsModEngine* pModEngine)
{
cpSize nsM = MOD_LEN(pModEngine);
cpMontDec_BNU(BN_NUMBER(pRbn), BN_NUMBER(pXbn), BN_SIZE(pXbn), pModEngine);
BN_SIZE(pRbn) = nsM;
BN_SIGN(pRbn) = ippBigNumPOS;
}
/*
// Montgomery exponentiation (binary) "fast" and "safe" versions
*/
#define cpMontExpBin_BNU_sscm OWNAPI(cpMontExpBin_BNU_sscm)
cpSize cpMontExpBin_BNU_sscm(BNU_CHUNK_T* pY,
const BNU_CHUNK_T* pX, cpSize nsX,
const BNU_CHUNK_T* pE, cpSize nsE,
gsModEngine* pModEngine);
#define cpMontExpBin_BNU OWNAPI(cpMontExpBin_BNU)
cpSize cpMontExpBin_BNU(BNU_CHUNK_T* pY,
const BNU_CHUNK_T* pX, cpSize nsX,
const BNU_CHUNK_T* pE, cpSize nsE,
gsModEngine* pModEngine);
__INLINE void cpMontExpBin_BN_sscm(IppsBigNumState* pYbn,
const IppsBigNumState* pXbn,
const IppsBigNumState* pEbn,
gsModEngine* pMont)
{
BNU_CHUNK_T* pX = BN_NUMBER(pXbn);
cpSize nsX = BN_SIZE(pXbn);
BNU_CHUNK_T* pE = BN_NUMBER(pEbn);
cpSize nsE = BN_SIZE(pEbn);
BNU_CHUNK_T* pY = BN_NUMBER(pYbn);
cpSize nsY = cpMontExpBin_BNU_sscm(pY, pX,nsX, pE,nsE, pMont);
FIX_BNU(pY, nsY);
BN_SIZE(pYbn) = nsY;
BN_SIGN(pYbn) = ippBigNumPOS;
}
__INLINE void cpMontExpBin_BN(IppsBigNumState* pYbn,
const IppsBigNumState* pXbn,
const IppsBigNumState* pEbn,
gsModEngine* pModEngine)
{
BNU_CHUNK_T* pX = BN_NUMBER(pXbn);
cpSize nsX = BN_SIZE(pXbn);
BNU_CHUNK_T* pE = BN_NUMBER(pEbn);
cpSize nsE = BN_SIZE(pEbn);
BNU_CHUNK_T* pY = BN_NUMBER(pYbn);
cpSize nsY = cpMontExpBin_BNU(pY, pX,nsX, pE,nsE, pModEngine);
FIX_BNU(pY, nsY);
BN_SIZE(pYbn) = nsY;
BN_SIGN(pYbn) = ippBigNumPOS;
}
/*
// Montgomery exponentiation (fixed window)
*/
#define cpMontExp_WinSize OWNAPI(cpMontExp_WinSize)
cpSize cpMontExp_WinSize(int bitsize);
#if defined(_USE_WINDOW_EXP_)
#define cpMontExpWin_BN_sscm OWNAPI(cpMontExpWin_BN_sscm)
void cpMontExpWin_BN_sscm(IppsBigNumState* pY,
const IppsBigNumState* pX, const IppsBigNumState* pE,
gsModEngine* pMont,
BNU_CHUNK_T* pPrecompResource);
#define cpMontExpWin_BN OWNAPI(cpMontExpWin_BN)
void cpMontExpWin_BN(IppsBigNumState* pY,
const IppsBigNumState* pX, const IppsBigNumState* pE,
gsModEngine* pMont,
BNU_CHUNK_T* pPrecompResource);
#endif
/*
// Montgomery multi-exponentiation
*/
/* precompute table for multi-exponentiation */
#define cpMontMultiExpInitArray OWNAPI(cpMontMultiExpInitArray)
void cpMontMultiExpInitArray(BNU_CHUNK_T* pPrecomTbl,
const BNU_CHUNK_T** ppX, cpSize xItemBitSize, cpSize numItems,
gsModEngine* pMont);
/* multi-exponentiation */
#define cpFastMontMultiExp OWNAPI(cpFastMontMultiExp)
void cpFastMontMultiExp(BNU_CHUNK_T* pY,
const BNU_CHUNK_T* pPrecomTbl,
const Ipp8u** ppE, cpSize eItemBitSize, cpSize numItems,
gsModEngine* pMont);
/*
// Montgomery inversion
*/
#define cpMontInv_BNU OWNAPI(cpMontInv_BNU)
BNU_CHUNK_T* cpMontInv_BNU(BNU_CHUNK_T* pR, const BNU_CHUNK_T* pA, IppsMontState* pMont);
#define cpRegInv_BNU OWNAPI(cpRegInv_BNU)
BNU_CHUNK_T* cpRegInv_BNU(BNU_CHUNK_T* pR, const BNU_CHUNK_T* pA, IppsMontState* pMont);
/*
// Montgomery internal GetSize/Init functions
*/
#define cpMontGetSize OWNAPI(cpMontGetSize)
IppStatus cpMontGetSize(cpSize maxLen32, int poolLength, cpSize* pCtxSize);
#define cpMontInit OWNAPI(cpMontInit)
IppStatus cpMontInit(int maxLen32, int poolLength, IppsMontState* pMont);
#define cpMontSet OWNAPI(cpMontSet)
IppStatus cpMontSet(const Ipp32u* pModulus, cpSize len32, IppsMontState* pMont);
#endif /* _CP_MONTGOMETRY_H */
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