| /*############################################################################ |
| # 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) Performance Primitives. Cryptography Primitives. |
| // Operations over GF(p) ectension. |
| // |
| // Context: |
| // ippsGFpxGetSize |
| // ippsGFpxInit |
| // ippsGFpxInitBinomial |
| // ippsGFpGetInfo |
| // |
| */ |
| |
| #include "owndefs.h" |
| #include "owncp.h" |
| |
| #include "pcpgfpstuff.h" |
| #include "pcpgfpxstuff.h" |
| #include "pcptool.h" |
| |
| /* Get context size */ |
| static int cpGFExGetSize(int elemLen, int pelmLen, int numpe) |
| { |
| int ctxSize = 0; |
| |
| /* size of GFp engine */ |
| ctxSize = sizeof(gsModEngine) |
| + elemLen*sizeof(BNU_CHUNK_T) /* modulus */ |
| + pelmLen*sizeof(BNU_CHUNK_T)*numpe; /* pool */ |
| |
| ctxSize = sizeof(IppsGFpState) /* size of IppsGFPState*/ |
| + ctxSize; /* GFpx engine */ |
| return ctxSize; |
| } |
| |
| IPPFUN(IppStatus, ippsGFpxGetSize, (const IppsGFpState* pGroundGF, int deg, int* pSize)) |
| { |
| IPP_BAD_PTR2_RET(pGroundGF, pSize); |
| IPP_BADARG_RET( deg<IPP_MIN_GF_EXTDEG || deg >IPP_MAX_GF_EXTDEG, ippStsBadArgErr); |
| pGroundGF = (IppsGFpState*)( IPP_ALIGNED_PTR(pGroundGF, GFP_ALIGNMENT) ); |
| IPP_BADARG_RET( !GFP_TEST_ID(pGroundGF), ippStsContextMatchErr ); |
| |
| #define MAX_GFx_SIZE (1<<15) /* max size (bytes) of GF element (32KB) */ |
| { |
| int groundElmLen = GFP_FELEN(GFP_PMA(pGroundGF)); |
| Ipp64u elmLen64 = (Ipp64u)(groundElmLen) *sizeof(BNU_CHUNK_T) *deg; |
| int elemLen = (int)LODWORD(elmLen64); |
| *pSize = 0; |
| IPP_BADARG_RET(elmLen64> MAX_GFx_SIZE, ippStsBadArgErr); |
| |
| *pSize = cpGFExGetSize(elemLen, elemLen, GFPX_POOL_SIZE) |
| + GFP_ALIGNMENT; |
| return ippStsNoErr; |
| } |
| #undef MAX_GFx_SIZE |
| } |
| |
| /* the "static" specificator removed because of incorrect result under Linux-32, p8 |
| what's wrong? not know maybe compiler (icl 2017) |
| need to check after switchng on icl 2018 |
| */ |
| /*static*/ void InitGFpxCtx(const IppsGFpState* pGroundGF, int extDeg, const IppsGFpMethod* method, IppsGFpState* pGFpx) |
| { |
| gsModEngine* pGFEp = GFP_PMA(pGroundGF); |
| int elemLen = extDeg * GFP_FELEN(pGFEp); |
| int elemLen32 = extDeg * GFP_FELEN32(pGFEp); |
| |
| Ipp8u* ptr = (Ipp8u*)pGFpx + sizeof(IppsGFpState); |
| |
| /* context identifier */ |
| GFP_ID(pGFpx) = idCtxGFP; |
| GFP_PMA(pGFpx) = (gsModEngine*)ptr; |
| { |
| gsModEngine* pGFEx = GFP_PMA(pGFpx); |
| |
| /* clear whole context */ |
| PaddBlock(0, ptr, sizeof(gsModEngine)); |
| ptr += sizeof(gsModEngine); |
| |
| GFP_PARENT(pGFEx) = pGFEp; |
| GFP_EXTDEGREE(pGFEx) = extDeg; |
| GFP_FEBITLEN(pGFEx) = 0;//elemBitLen; |
| GFP_FELEN(pGFEx) = elemLen; |
| GFP_FELEN32(pGFEx) = elemLen32; |
| GFP_PELEN(pGFEx) = elemLen; |
| GFP_METHOD(pGFEx) = method->arith; |
| GFP_MODULUS(pGFEx) = (BNU_CHUNK_T*)(ptr); ptr += elemLen * sizeof(BNU_CHUNK_T); /* field polynomial */ |
| GFP_POOL(pGFEx) = (BNU_CHUNK_T*)(ptr); /* pool */ |
| GFP_MAXPOOL(pGFEx) = GFPX_POOL_SIZE; |
| GFP_USEDPOOL(pGFEx) = 0; |
| |
| cpGFpElementPadd(GFP_MODULUS(pGFEx), elemLen, 0); |
| } |
| } |
| |
| |
| /*F* |
| // Name: ippsGFpxInit |
| // |
| // Purpose: initializes finite field extension GF(p^d) |
| // |
| // Returns: Reason: |
| // ippStsNullPtrErr NULL == pGFpx |
| // NULL == pGroundGF |
| // NULL == ppGroundElm |
| // NULL == method |
| // |
| // ippStsContextMatchErr incorrect pGroundGF's context ID |
| // incorrect ppGroundElm[i]'s context ID |
| // |
| // ippStsOutOfRangeErr size of ppGroundElm[i] does not equal to size of pGroundGF element |
| // |
| // ippStsBadArgErr IPP_MIN_GF_EXTDEG > extDeg || extDeg > IPP_MAX_GF_EXTDEG |
| // (IPP_MIN_GF_EXTDEG==2, IPP_MAX_GF_EXTDEG==8) |
| // 1>nElm || nElm>extDeg |
| // |
| // cpID_Poly!=method->modulusID -- method does not refferenced to polynomial one |
| // method->modulusBitDeg!=extDeg -- fixed method does not match to degree extension |
| // |
| // ippStsNoErr no error |
| // |
| // Parameters: |
| // pGroundGF pointer to the context of the finite field is being extension |
| // extDeg decgree of extension |
| // ppGroundElm[] pointer to the array of extension field polynomial |
| // nElm number of coefficients above |
| // method pointer to the basic arithmetic metods |
| // pGFpx pointer to Finite Field context is being initialized |
| *F*/ |
| IPPFUN(IppStatus, ippsGFpxInit,(const IppsGFpState* pGroundGF, int extDeg, |
| const IppsGFpElement* const ppGroundElm[], int nElm, |
| const IppsGFpMethod* method, IppsGFpState* pGFpx)) |
| { |
| IPP_BAD_PTR4_RET(pGFpx, pGroundGF, ppGroundElm, method); |
| |
| pGFpx = (IppsGFpState*)( IPP_ALIGNED_PTR(pGFpx, GFP_ALIGNMENT) ); |
| pGroundGF = (IppsGFpState*)( IPP_ALIGNED_PTR(pGroundGF, GFP_ALIGNMENT) ); |
| IPP_BADARG_RET( !GFP_TEST_ID(pGroundGF), ippStsContextMatchErr ); |
| |
| /* test extension degree */ |
| IPP_BADARG_RET( extDeg<IPP_MIN_GF_EXTDEG || extDeg>IPP_MAX_GF_EXTDEG, ippStsBadArgErr); |
| /* coeffs at (x^0), (x^1), ..., (x^(deg-1)) passed acually */ |
| /* considering normilized f(x), the coeff at (x^deg) is 1 and so could neither stored no passed */ |
| /* test if 1<=nElm<=extDeg */ |
| IPP_BADARG_RET( 1>nElm || nElm>extDeg, ippStsBadArgErr); |
| |
| /* test if method is polynomial based */ |
| IPP_BADARG_RET(cpID_Poly != (method->modulusID & cpID_Poly), ippStsBadArgErr); |
| /* test if method is fixed polynomial based */ |
| IPP_BADARG_RET(method->modulusBitDeg && (method->modulusBitDeg!=extDeg), ippStsBadArgErr); |
| |
| InitGFpxCtx(pGroundGF, extDeg, method, pGFpx); |
| |
| { |
| BNU_CHUNK_T* pPoly = GFP_MODULUS(GFP_PMA(pGFpx)); |
| int polyTermlen = GFP_FELEN(GFP_PMA(pGroundGF)); |
| int n; |
| for(n=0; n<nElm; n++, pPoly+=polyTermlen) { |
| const IppsGFpElement* pGroundElm = ppGroundElm[n]; |
| |
| /* test element */ |
| IPP_BAD_PTR1_RET(pGroundElm); |
| IPP_BADARG_RET(!GFPE_TEST_ID(pGroundElm), ippStsContextMatchErr); |
| IPP_BADARG_RET(GFPE_ROOM(pGroundElm)!=polyTermlen, ippStsOutOfRangeErr); |
| |
| /* copy element */ |
| cpGFpElementCopy(pPoly, GFPE_DATA(pGroundElm), polyTermlen); |
| } |
| } |
| |
| return ippStsNoErr; |
| } |
| |
| /*F* |
| // Name: ippsGFpxInitBinomial |
| // |
| // Purpose: initializes finite field extension GF(p^d) |
| // |
| // Returns: Reason: |
| // ippStsNullPtrErr NULL == pGFpx |
| // NULL == pGroundGF |
| // NULL == ppGroundElm |
| // NULL == method |
| // |
| // ippStsContextMatchErr incorrect pGroundGF's context ID |
| // incorrect pGroundElm's context ID |
| // |
| // ippStsOutOfRangeErr size of ppGroundElm does not equal to size of pGroundGF element |
| // |
| // ippStsBadArgErr IPP_MIN_GF_EXTDEG > extDeg || extDeg > IPP_MAX_GF_EXTDEG |
| // (IPP_MIN_GF_EXTDEG==2, IPP_MAX_GF_EXTDEG==8) |
| // |
| // cpID_Poly!=method->modulusID -- method does not refferenced to polynomial one |
| // method->modulusBitDeg!=extDeg -- fixed method does not match to degree extension |
| // |
| // ippStsNoErr no error |
| // |
| // Parameters: |
| // pGroundGF pointer to the context of the finite field is being extension |
| // extDeg decgree of extension |
| // ppGroundElm[] pointer to the array of extension field polynomial |
| // nElm number of coefficients above |
| // method pointer to the basic arithmetic metods |
| // pGFpx pointer to Finite Field context is being initialized |
| *F*/ |
| IPPFUN(IppStatus, ippsGFpxInitBinomial,(const IppsGFpState* pGroundGF, int extDeg, |
| const IppsGFpElement* pGroundElm, |
| const IppsGFpMethod* method, |
| IppsGFpState* pGFpx)) |
| { |
| IPP_BAD_PTR4_RET(pGFpx, pGroundGF, pGroundElm, method); |
| |
| pGFpx = (IppsGFpState*)( IPP_ALIGNED_PTR(pGFpx, GFP_ALIGNMENT) ); |
| pGroundGF = (IppsGFpState*)( IPP_ALIGNED_PTR(pGroundGF, GFP_ALIGNMENT) ); |
| IPP_BADARG_RET( !GFP_TEST_ID(pGroundGF), ippStsContextMatchErr ); |
| |
| IPP_BADARG_RET( !GFPE_TEST_ID(pGroundElm), ippStsContextMatchErr ); |
| IPP_BADARG_RET(GFPE_ROOM(pGroundElm)!=GFP_FELEN(GFP_PMA(pGroundGF)), ippStsOutOfRangeErr); |
| |
| IPP_BADARG_RET( extDeg<IPP_MIN_GF_EXTDEG || extDeg>IPP_MAX_GF_EXTDEG, ippStsBadArgErr); |
| |
| /* test method is binomial based */ |
| IPP_BADARG_RET(cpID_Binom != (method->modulusID & cpID_Binom), ippStsBadArgErr); |
| |
| /* test if method assums fixed degree extension */ |
| IPP_BADARG_RET(method->modulusBitDeg && (extDeg!=method->modulusBitDeg), ippStsBadArgErr); |
| |
| /* init context */ |
| InitGFpxCtx(pGroundGF, extDeg, method, pGFpx); |
| |
| /* store low-order coefficient of irresucible into the context */ |
| cpGFpElementCopy(GFP_MODULUS(GFP_PMA(pGFpx)), GFPE_DATA(pGroundElm), GFP_FELEN(GFP_PMA(pGroundGF))); |
| |
| return ippStsNoErr; |
| } |
