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/* 
//     Intel(R) Integrated Performance Primitives. Cryptography Primitives.
//     EC over GF(p^m) definitinons
// 
//     Context:
//        ippsGFpECGetSize()
//
*/

#include "owndefs.h"
#include "owncp.h"
#include "pcpgfpecstuff.h"
#include "pcpeccp.h"

/*F*
// Name: ippsGFpECGetSize
//
// Purpose: Gets the size of an elliptic curve over the finite field
//
// Returns:                   Reason:
//    ippStsNullPtrErr              NULL == pGFp
//                                  NULL == pSize
//
//    ippStsContextMatchErr         invalid pGFp->idCtx
//
//    ippStsNoErr                   no error
//
// Parameters:
//    pGFp      Pointer to the IppsGFpState context of the underlying finite field
//    pSize     Buffer size in bytes needed for the IppsGFpECState context
//
*F*/

IPPFUN(IppStatus, ippsGFpECGetSize,(const IppsGFpState* pGFp, int* pSize))
{
   IPP_BAD_PTR2_RET(pGFp, pSize);
   pGFp = (IppsGFpState*)( IPP_ALIGNED_PTR(pGFp, GFP_ALIGNMENT) );
   IPP_BADARG_RET( !GFP_TEST_ID(pGFp), ippStsContextMatchErr );

   {
      gsModEngine* pGFE = GFP_PMA(pGFp);
      *pSize = cpGFpECGetSize(cpGFpBasicDegreeExtension(pGFE), GFP_FEBITLEN(cpGFpBasic(pGFE)))
                + ECGFP_ALIGNMENT;
      return ippStsNoErr;
   }
}