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/*			     Written by Ken Goldman				*/
/*		       IBM Thomas J. Watson Research Center			*/
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#ifndef _TPMECC_SIGNATURE_SM2_FP_H_
#define _TPMECC_SIGNATURE_SM2_FP_H_

#if ALG_ECC && ALG_SM2
//*** TpmEcc_SignEcSm2()
// This function signs a digest using the method defined in SM2 Part 2. The method
// in the standard will add a header to the message to be signed that is a hash of
// the values that define the key. This then hashed with the message to produce a
// digest ('e'). This function signs 'e'.
//  Return Type: TPM_RC
//      TPM_RC_VALUE         bad curve
TPM_RC TpmEcc_SignEcSm2(Crypt_Int* bnR,  // OUT: 'r' component of the signature
			Crypt_Int* bnS,  // OUT: 's' component of the signature
			const Crypt_EccCurve* E,    // IN: the curve used in signing
			Crypt_Int*            bnD,  // IN: the private key
			const TPM2B_DIGEST*   digest,  // IN: the digest to sign
			RAND_STATE* rand  // IN: random number generator (mostly for
			//     debug)
			);

//*** TpmEcc_ValidateSignatureEcSm2()
// This function is used to validate an SM2 signature.
//  Return Type: TPM_RC
//      TPM_RC_SIGNATURE            signature not valid
TPM_RC TpmEcc_ValidateSignatureEcSm2(
				     Crypt_Int*            bnR,  // IN: 'r' component of the signature
				     Crypt_Int*            bnS,  // IN: 's' component of the signature
				     const Crypt_EccCurve* E,    // IN: the curve used in the signature
				     //     process
				     Crypt_Point*        ecQ,    // IN: the public point of the key
				     const TPM2B_DIGEST* digest  // IN: the digest that was signed
				     );

#endif  // ALG_ECC && ALG_SM2
#endif  // _TPMECC_SIGNATURE_SM2_FP_H_