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/* 
// 
//  Purpose:
//     Cryptography Primitive.
//     EC over Prime Finite Field (validate domain parameters)
// 
//  Contents:
//     ippsECCPValidate()
// 
// 
*/

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


/*F*
//    Name: ippsECCPValidate
//
// Purpose: Validate ECC Domain Parameters.
//
// Returns:                Reason:
//    ippStsNullPtrErr        NULL == pEC
//                            NULL == c
//                            NULL == pSeed
//                            NULL == pResult
//
//    ippStsContextMatchErr   illegal pEC->idCtx
//                            illegal c->idCtx
//
//    ippStsBadArgErr         nTrials <=0
//                            BN_SIZE(c)<5
//
//    ippStsNoErr             no errors
//
// Parameters:
//    nTrials     number of trials of primality test
//    pResult     pointer to the validation result
//    pEC        pointer to the ECC context
//    rndFunc     Specified Random Generator.
//    pRndParam   Pointer to Random Generator context.
//
// Note
//    Validation Domain Parameters folowing by P1363 recommendation
//    (reference A.16.8)
//
*F*/

#define _DISABLE_TEST_PRIMALITY_
// validation has been reduced in comparison with legacy version:
// - no primality test of underlying prime
// - no primality test of base point order
// - no MOV test

IPPFUN(IppStatus, ippsECCPValidate, (int nTrials, IppECResult* pResult, IppsECCPState* pEC,
                                     IppBitSupplier rndFunc, void* pRndParam))
{
   #if defined(_DISABLE_TEST_PRIMALITY_)
   UNREFERENCED_PARAMETER(nTrials);
   UNREFERENCED_PARAMETER(rndFunc);
   UNREFERENCED_PARAMETER(pRndParam);
   #else
   /* test number of trials for primality check */
   IPP_BADARG_RET(nTrials<=0, ippStsBadArgErr);
   IPP_BAD_PTR2_RET(rndFunc, pRndParam);
   #endif

   IPP_BAD_PTR2_RET(pResult, pEC);

   /* use aligned EC context */
   pEC = (IppsGFpECState*)( IPP_ALIGNED_PTR(pEC, ECGFP_ALIGNMENT) );
   IPP_BADARG_RET(!ECP_TEST_ID(pEC), ippStsContextMatchErr);

   return ippsGFpECVerify(pResult, pEC, (Ipp8u*)ECP_SBUFFER(pEC));
}