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     40 
     41 /*
     42 //     Intel(R) Integrated Performance Primitives. Cryptography Primitives.
     43 //     Operations over GF(p).
     44 //
     45 //     Context:
     46 //        ippsGFpSetElement()
     47 //
     48 */
     49 #include "owndefs.h"
     50 #include "owncp.h"
     51 
     52 #include "pcpgfpstuff.h"
     53 #include "pcpgfpxstuff.h"
     54 #include "pcptool.h"
     55 
     56 //tbcd: temporary excluded: #include <assert.h>
     57 
     58 /*F*
     59 // Name: ippsGFpSetElement
     60 //
     61 // Purpose: Set GF Element
     62 //
     63 // Returns:                   Reason:
     64 //    ippStsNullPtrErr           NULL == pGFp
     65 //                               NULL == pR
     66 //                               NULL == pA && lenA>0
     67 //
     68 //    ippStsContextMatchErr      invalid pGFp->idCtx
     69 //                               invalid pR->idCtx
     70 //
     71 //    ippStsSizeErr              pA && !(0<=lenA && lenA<GFP_FELEN32())
     72 //
     73 //    ippStsOutOfRangeErr        GFPE_ROOM() != GFP_FELEN()
     74 //                               BNU representation of pA[i]..pA[i+GFP_FELEN32()-1] >= modulus
     75 //
     76 //    ippStsNoErr                no error
     77 //
     78 // Parameters:
     79 //    pA          pointer to the data representation Finite Field element
     80 //    lenA        length of Finite Field data representation array
     81 //    pR          pointer to Finite Field Element context
     82 //    pGFp        pointer to Finite Field context
     83 *F*/
     84 IPPFUN(IppStatus, ippsGFpSetElement,(const Ipp32u* pA, int lenA, IppsGFpElement* pR, IppsGFpState* pGFp))
     85 {
     86    IPP_BAD_PTR2_RET(pR, pGFp);
     87    pGFp = (IppsGFpState*)( IPP_ALIGNED_PTR(pGFp, GFP_ALIGNMENT) );
     88    IPP_BADARG_RET( !GFP_TEST_ID(pGFp), ippStsContextMatchErr );
     89    IPP_BADARG_RET( !GFPE_TEST_ID(pR), ippStsContextMatchErr );
     90 
     91    IPP_BADARG_RET( !pA && (0<lenA), ippStsNullPtrErr);
     92    IPP_BADARG_RET( pA && !(0<=lenA && lenA<=GFP_FELEN32(GFP_PMA(pGFp))), ippStsSizeErr );
     93    IPP_BADARG_RET( GFPE_ROOM(pR)!=GFP_FELEN(GFP_PMA(pGFp)), ippStsOutOfRangeErr );
     94 
     95    {
     96       IppStatus sts = ippStsNoErr;
     97 
     98       gsModEngine* pGFE = GFP_PMA(pGFp);
     99       int elemLen = GFP_FELEN(pGFE);
    100       BNU_CHUNK_T* pTmp = cpGFpGetPool(1, pGFE);
    101       //tbcd: temporary excluded: assert(NULL!=pTmp);
    102 
    103       ZEXPAND_BNU(pTmp, 0, elemLen);
    104       if(pA && lenA)
    105          cpGFpxCopyToChunk(pTmp, pA, lenA, pGFE);
    106 
    107       if(!cpGFpxSet(GFPE_DATA(pR), pTmp, elemLen, pGFE))
    108          sts = ippStsOutOfRangeErr;
    109 
    110       cpGFpReleasePool(1, pGFE);
    111       return sts;
    112    }
    113 }
    114