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40
41 /*
42 //
43 // Purpose:
44 // Intel(R) Integrated Performance Primitives. Cryptography Primitives.
45 // Internal EC over GF(p^m) basic Definitions & Function Prototypes
46 //
47 // Context:
48 // gfec_NegPoint()
49 //
50 */
51
52 #include "owndefs.h"
53 #include "owncp.h"
54 #include "pcpgfpecstuff.h"
55 #include "gsscramble.h"
56
57
gfec_NegPoint(IppsGFpECPoint * pR,const IppsGFpECPoint * pP,IppsGFpECState * pEC)58 IppsGFpECPoint* gfec_NegPoint(IppsGFpECPoint* pR,
59 const IppsGFpECPoint* pP, IppsGFpECState* pEC)
60 {
61 IppsGFpState* pGF = ECP_GFP(pEC);
62 gsModEngine* pGFE = GFP_PMA(pGF);
63 int elmLen = GFP_FELEN(pGFE);
64 if(pR!=pP)
65 gfec_CopyPoint(pR, pP, elmLen);
66 GFP_METHOD(pGFE)->neg(ECP_POINT_Y(pR), ECP_POINT_Y(pP), pGFE);
67 return pR;
68 }
69