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/*############################################################################
# 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)
// GF(p) extension internal
//
*/
#if !defined(_PCP_GFPEXT_H_)
#define _PCP_GFPEXT_H_
#include "pcpgfpstuff.h"
/* GF(p^d) pool */
#define GFPX_PESIZE(pGF) GFP_FELEN((pGF))
#define GFPX_POOL_SIZE (14) //(8) /* Number of temporary variables in pool */
/* address of ground field element inside expanded field element */
#define GFPX_IDX_ELEMENT(pxe, idx, eleSize) ((pxe)+(eleSize)*(idx))
__INLINE int degree(const BNU_CHUNK_T* pE, const gsModEngine* pGFEx)
{
int groundElemLen = GFP_FELEN(GFP_PARENT(pGFEx));
int deg;
for(deg=GFP_EXTDEGREE(pGFEx)-1; deg>=0; deg-- ) {
if(!GFP_IS_ZERO(pE+groundElemLen*deg, groundElemLen)) break;
}
return deg;
}
__INLINE gsModEngine* cpGFpBasic(const gsModEngine* pGFEx)
{
while( !GFP_IS_BASIC(pGFEx) ) {
pGFEx = GFP_PARENT(pGFEx);
}
return (gsModEngine*)pGFEx;
}
__INLINE int cpGFpBasicDegreeExtension(const gsModEngine* pGFEx)
{
int degree = GFP_EXTDEGREE(pGFEx);
while( !GFP_IS_BASIC(pGFEx) ) {
pGFEx = GFP_PARENT(pGFEx);
degree *= GFP_EXTDEGREE(pGFEx);
}
return degree;
}
/* convert external data (Ipp32u) => internal element (BNU_CHUNK_T) representation
returns length of element (in BNU_CHUNK_T)
*/
__INLINE int cpGFpxCopyToChunk(BNU_CHUNK_T* pElm, const Ipp32u* pA, int nsA, const gsModEngine* pGFEx)
{
gsModEngine* pBasicGFE = cpGFpBasic(pGFEx);
int basicExtension = cpGFpBasicDegreeExtension(pGFEx);
int basicElmLen32 = GFP_FELEN32(pBasicGFE);
int basicElmLen = GFP_FELEN(pBasicGFE);
int deg;
for(deg=0; deg<basicExtension && nsA>0; deg++, nsA -= basicElmLen32) {
int srcLen = IPP_MIN(nsA, basicElmLen32);
ZEXPAND_COPY_BNU((Ipp32u*)pElm, basicElmLen*(int)(sizeof(BNU_CHUNK_T)/sizeof(Ipp32u)), pA,srcLen);
pElm += basicElmLen;
pA += basicElmLen32;
}
return basicElmLen*deg;
}
/* convert internal element (BNU_CHUNK_T) => external data (Ipp32u) representation
returns length of data (in Ipp32u)
*/
__INLINE int cpGFpxCopyFromChunk(Ipp32u* pA, const BNU_CHUNK_T* pElm, const gsModEngine* pGFEx)
{
gsModEngine* pBasicGFE = cpGFpBasic(pGFEx);
int basicExtension = cpGFpBasicDegreeExtension(pGFEx);
int basicElmLen32 = GFP_FELEN32(pBasicGFE);
int basicElmLen = GFP_FELEN(pBasicGFE);
int deg;
for(deg=0; deg<basicExtension; deg++) {
COPY_BNU(pA, (Ipp32u*)pElm, basicElmLen32);
pA += basicElmLen32;
pElm += basicElmLen;
}
return basicElmLen32*deg;
}
#define cpGFpxRand OWNAPI(cpGFpxRand)
BNU_CHUNK_T* cpGFpxRand(BNU_CHUNK_T* pR, gsModEngine* pGFEx, IppBitSupplier rndFunc, void* pRndParam);
#define cpGFpxSet OWNAPI(cpGFpxSet)
BNU_CHUNK_T* cpGFpxSet (BNU_CHUNK_T* pR, const BNU_CHUNK_T* pDataA, int nsA, gsModEngine* pGFEx);
#define cpGFpxGet OWNAPI(cpGFpxGet)
BNU_CHUNK_T* cpGFpxGet (BNU_CHUNK_T* pDataA, int nsA, const BNU_CHUNK_T* pR, gsModEngine* pGFEx);
#define cpGFpxSetPolyTerm OWNAPI(cpGFpxSetPolyTerm)
BNU_CHUNK_T* cpGFpxSetPolyTerm (BNU_CHUNK_T* pR, int deg, const BNU_CHUNK_T* pDataA, int nsA, gsModEngine* pGFEx);
#define cpGFpxGetPolyTerm OWNAPI(cpGFpxGetPolyTerm)
BNU_CHUNK_T* cpGFpxGetPolyTerm (BNU_CHUNK_T* pDataA, int nsA, const BNU_CHUNK_T* pR, int deg, gsModEngine* pGFEx);
#define cpGFpxAdd OWNAPI(cpGFpxAdd)
BNU_CHUNK_T* cpGFpxAdd (BNU_CHUNK_T* pR, const BNU_CHUNK_T* pA, const BNU_CHUNK_T* pB, gsModEngine* pGFEx);
#define cpGFpxSub OWNAPI(cpGFpxSub)
BNU_CHUNK_T* cpGFpxSub (BNU_CHUNK_T* pR, const BNU_CHUNK_T* pA, const BNU_CHUNK_T* pB, gsModEngine* pGFEx);
#define cpGFpxMul OWNAPI(cpGFpxMul)
BNU_CHUNK_T* cpGFpxMul (BNU_CHUNK_T* pR, const BNU_CHUNK_T* pA, const BNU_CHUNK_T* pB, gsModEngine* pGFEx);
#define cpGFpxSqr OWNAPI(cpGFpxSqr)
BNU_CHUNK_T* cpGFpxSqr (BNU_CHUNK_T* pR, const BNU_CHUNK_T* pA, gsModEngine* pGFEx);
#define cpGFpxAdd_GFE OWNAPI(cpGFpxAdd_GFE)
BNU_CHUNK_T* cpGFpxAdd_GFE (BNU_CHUNK_T* pR, const BNU_CHUNK_T* pA, const BNU_CHUNK_T* pGroundB, gsModEngine* pGFEx);
#define cpGFpxSub_GFE OWNAPI(cpGFpxSub_GFE)
BNU_CHUNK_T* cpGFpxSub_GFE (BNU_CHUNK_T* pR, const BNU_CHUNK_T* pA, const BNU_CHUNK_T* pGroundB, gsModEngine* pGFEx);
#define cpGFpxMul_GFE OWNAPI(cpGFpxMul_GFE)
BNU_CHUNK_T* cpGFpxMul_GFE (BNU_CHUNK_T* pR, const BNU_CHUNK_T* pA, const BNU_CHUNK_T* pGroundB, gsModEngine* pGFEx);
#define cpGFpGetOptimalWinSize OWNAPI(cpGFpGetOptimalWinSize)
int cpGFpGetOptimalWinSize(int bitsize);
#define cpGFpxExp OWNAPI(cpGFpxExp)
BNU_CHUNK_T* cpGFpxExp (BNU_CHUNK_T* pR, const BNU_CHUNK_T* pA, const BNU_CHUNK_T* pE, int nsE, gsModEngine* pGFEx, Ipp8u* pScratchBuffer);
#define cpGFpxMultiExp OWNAPI(cpGFpxMultiExp)
BNU_CHUNK_T* cpGFpxMultiExp(BNU_CHUNK_T* pR, const BNU_CHUNK_T* ppA[], const BNU_CHUNK_T* ppE[], int nsE[], int nItems,
gsModEngine* pGFEx, Ipp8u* pScratchBuffer);
#define cpGFpxConj OWNAPI(cpGFpxConj)
BNU_CHUNK_T* cpGFpxConj(BNU_CHUNK_T* pR, const BNU_CHUNK_T* pA, gsModEngine* pGFEx);
#define cpGFpxNeg OWNAPI(cpGFpxNeg)
BNU_CHUNK_T* cpGFpxNeg (BNU_CHUNK_T* pR, const BNU_CHUNK_T* pA, gsModEngine* pGFEx);
#define cpGFpxInv OWNAPI(cpGFpxInv)
BNU_CHUNK_T* cpGFpxInv (BNU_CHUNK_T* pR, const BNU_CHUNK_T* pA, gsModEngine* pGFEx);
#define cpGFpxHalve OWNAPI(cpGFpxHalve)
BNU_CHUNK_T* cpGFpxHalve (BNU_CHUNK_T* pR, const BNU_CHUNK_T* pA, gsModEngine* pGFEx);
#endif /* _PCP_GFPEXT_H_ */
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