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     40 
     41 /*
     42 //
     43 //  Purpose:
     44 //     Intel(R) Integrated Performance Primitives. Cryptography Primitives.
     45 //     EC over GF(p) Operations
     46 //
     47 //     Context:
     48 //        ippsGFpECSetPoint()
     49 //
     50 */
     51 
     52 #include "owndefs.h"
     53 #include "owncp.h"
     54 #include "pcpgfpecstuff.h"
     55 #include "pcphash.h"
     56 #include "pcphash_rmf.h"
     57 
     58 /*F*
     59 // Name: ippsGFpECSetPoint
     60 //
     61 // Purpose: Sets a point on an elliptic curve
     62 //
     63 // Returns:                   Reason:
     64 //    ippStsNullPtrErr          pPoint == NULL
     65 //                              pEC == NULL
     66 //                              pX == NULL
     67 //                              pY == NULL
     68 //
     69 //    ippStsContextMatchErr     invalid pEC->idCtx
     70 //                              invalid pPoint->idCtx
     71 //                              invalid pX->idCtx
     72 //                              invalid pY->idCtx
     73 //
     74 //    ippStsOutOfRangeErr       ECP_POINT_FELEN(pX)!=GFP_FELEN()
     75 //                              ECP_POINT_FELEN(pY)!=GFP_FELEN()
     76 //                              ECP_POINT_FELEN(pPoint)!=GFP_FELEN()
     77 //
     78 //    ippStsNoErr               no error
     79 //
     80 // Parameters:
     81 //    pX, pY    Pointers to the X and Y coordinates of a point on the elliptic curve
     82 //    pPoint    Pointer to the IppsGFpECPoint context
     83 //    pEC       Pointer to the context of the elliptic curve
     84 //
     85 *F*/
     86 
     87 IPPFUN(IppStatus, ippsGFpECSetPoint,(const IppsGFpElement* pX, const IppsGFpElement* pY,
     88                                            IppsGFpECPoint* pPoint,
     89                                            IppsGFpECState* pEC))
     90 {
     91    IPP_BAD_PTR2_RET(pPoint, pEC);
     92    pEC = (IppsGFpECState*)( IPP_ALIGNED_PTR(pEC, ECGFP_ALIGNMENT) );
     93    IPP_BADARG_RET( !ECP_TEST_ID(pEC), ippStsContextMatchErr );
     94    IPP_BADARG_RET( !ECP_POINT_TEST_ID(pPoint), ippStsContextMatchErr );
     95 
     96    IPP_BAD_PTR2_RET(pX, pY);
     97    IPP_BADARG_RET( !GFPE_TEST_ID(pX), ippStsContextMatchErr );
     98    IPP_BADARG_RET( !GFPE_TEST_ID(pY), ippStsContextMatchErr );
     99 
    100    IPP_BADARG_RET( GFPE_ROOM(pX)!=GFP_FELEN(GFP_PMA(ECP_GFP(pEC))), ippStsOutOfRangeErr);
    101    IPP_BADARG_RET( GFPE_ROOM(pY)!=GFP_FELEN(GFP_PMA(ECP_GFP(pEC))), ippStsOutOfRangeErr);
    102    IPP_BADARG_RET( ECP_POINT_FELEN(pPoint)!=GFP_FELEN(GFP_PMA(ECP_GFP(pEC))), ippStsOutOfRangeErr);
    103 
    104    if(gfec_SetPoint(ECP_POINT_DATA(pPoint), GFPE_DATA(pX), GFPE_DATA(pY), pEC))
    105       ECP_POINT_FLAGS(pPoint) = ECP_AFFINE_POINT | ECP_FINITE_POINT;
    106    else
    107       ECP_POINT_FLAGS(pPoint) = 0;
    108    return ippStsNoErr;
    109 }
    110