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// This file was extracted from the TCG Published
// Trusted Platform Module Library
// Part 3: Commands
// Family "2.0"
// Level 00 Revision 01.16
// October 30, 2014
#include "InternalRoutines.h"
#include "EC_Ephemeral_fp.h"
#ifdef TPM_ALG_ECC
//
//
// Error Returns Meaning
//
// none ...
//
TPM_RC
TPM2_EC_Ephemeral(
EC_Ephemeral_In *in, // IN: input parameter list
EC_Ephemeral_Out *out // OUT: output parameter list
)
{
TPM2B_ECC_PARAMETER r;
// Get the random value that will be used in the point multiplications
// Note: this does not commit the count.
if(!CryptGenerateR(&r,
NULL,
in->curveID,
NULL))
return TPM_RC_NO_RESULT;
CryptEccPointMultiply(&out->Q.t.point, in->curveID, &r, NULL);
// commit the count value
out->counter = CryptCommit();
return TPM_RC_SUCCESS;
}
#endif