/********************************************************************************/
/*										*/
/*			     				*/
/*			     Written by Ken Goldman				*/
/*		       IBM Thomas J. Watson Research Center			*/
/*            $Id: CryptEccSignature_fp.h 809 2016-11-16 18:31:54Z kgoldman $			*/
/*										*/
/*  Licenses and Notices							*/
/*										*/
/*  1. Copyright Licenses:							*/
/*										*/
/*  - Trusted Computing Group (TCG) grants to the user of the source code in	*/
/*    this specification (the "Source Code") a worldwide, irrevocable, 		*/
/*    nonexclusive, royalty free, copyright license to reproduce, create 	*/
/*    derivative works, distribute, display and perform the Source Code and	*/
/*    derivative works thereof, and to grant others the rights granted herein.	*/
/*										*/
/*  - The TCG grants to the user of the other parts of the specification 	*/
/*    (other than the Source Code) the rights to reproduce, distribute, 	*/
/*    display, and perform the specification solely for the purpose of 		*/
/*    developing products based on such documents.				*/
/*										*/
/*  2. Source Code Distribution Conditions:					*/
/*										*/
/*  - Redistributions of Source Code must retain the above copyright licenses, 	*/
/*    this list of conditions and the following disclaimers.			*/
/*										*/
/*  - Redistributions in binary form must reproduce the above copyright 	*/
/*    licenses, this list of conditions	and the following disclaimers in the 	*/
/*    documentation and/or other materials provided with the distribution.	*/
/*										*/
/*  3. Disclaimers:								*/
/*										*/
/*  - THE COPYRIGHT LICENSES SET FORTH ABOVE DO NOT REPRESENT ANY FORM OF	*/
/*  LICENSE OR WAIVER, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, WITH	*/
/*  RESPECT TO PATENT RIGHTS HELD BY TCG MEMBERS (OR OTHER THIRD PARTIES)	*/
/*  THAT MAY BE NECESSARY TO IMPLEMENT THIS SPECIFICATION OR OTHERWISE.		*/
/*  Contact TCG Administration (admin@trustedcomputinggroup.org) for 		*/
/*  information on specification licensing rights available through TCG 	*/
/*  membership agreements.							*/
/*										*/
/*  - THIS SPECIFICATION IS PROVIDED "AS IS" WITH NO EXPRESS OR IMPLIED 	*/
/*    WARRANTIES WHATSOEVER, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR 	*/
/*    FITNESS FOR A PARTICULAR PURPOSE, ACCURACY, COMPLETENESS, OR 		*/
/*    NONINFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS, OR ANY WARRANTY 		*/
/*    OTHERWISE ARISING OUT OF ANY PROPOSAL, SPECIFICATION OR SAMPLE.		*/
/*										*/
/*  - Without limitation, TCG and its members and licensors disclaim all 	*/
/*    liability, including liability for infringement of any proprietary 	*/
/*    rights, relating to use of information in this specification and to the	*/
/*    implementation of this specification, and TCG disclaims all liability for	*/
/*    cost of procurement of substitute goods or services, lost profits, loss 	*/
/*    of use, loss of data or any incidental, consequential, direct, indirect, 	*/
/*    or special damages, whether under contract, tort, warranty or otherwise, 	*/
/*    arising in any way out of use or reliance upon this specification or any 	*/
/*    information herein.							*/
/*										*/
/*  (c) Copyright IBM Corp. and others, 2016					*/
/*										*/
/********************************************************************************/

#ifndef CRYPTECCSIGNATURE_FP_H
#define CRYPTECCSIGNATURE_FP_H

TPM_RC
BnSignEcdsa(
	    bigNum                   bnR,           // OUT: r component of the signature
	    bigNum                   bnS,           // OUT: s component of the signature
	    bigCurve                 E,             // IN: the curve used in the signature
	    //     process
	    bigNum                   bnD,           // IN: private signing key
	    const TPM2B_DIGEST      *digest,        // IN: the digest to sign
	    RAND_STATE              *rand           // IN: used in debug of signing
	    );
LIB_EXPORT TPM_RC
CryptEccSign(
	     TPMT_SIGNATURE          *signature,     // OUT: signature
	     OBJECT                  *signKey,       // IN: ECC key to sign the hash
	     const TPM2B_DIGEST      *digest,        // IN: digest to sign
	     TPMT_ECC_SCHEME         *scheme,        // IN: signing scheme
	     RAND_STATE              *rand
	     );
TPM_RC
BnValidateSignatureEcdsa(
			 bigNum                   bnR,           // IN: r component of the signature
			 bigNum                   bnS,           // IN: s component of the signature
			 bigCurve                 E,             // IN: the curve used in the signature
			 //     process
			 bn_point_t              *ecQ,           // IN: the public point of the key
			 const TPM2B_DIGEST      *digest         // IN: the digest that was signed
			 );
LIB_EXPORT TPM_RC
CryptEccValidateSignature(
			  TPMT_SIGNATURE          *signature,     // IN: signature to be verified
			  OBJECT                  *signKey,       // IN: ECC key signed the hash
			  const TPM2B_DIGEST      *digest         // IN: digest that was signed
			  );
LIB_EXPORT TPM_RC
CryptEccCommitCompute(
		      TPMS_ECC_POINT          *K,             // OUT: [d]B or [r]Q
		      TPMS_ECC_POINT          *L,             // OUT: [r]B
		      TPMS_ECC_POINT          *E,             // OUT: [r]M
		      TPM_ECC_CURVE            curveId,       // IN: the curve for the computations
		      TPMS_ECC_POINT          *M,             // IN: M (optional)
		      TPMS_ECC_POINT          *B,             // IN: B (optional)
		      TPM2B_ECC_PARAMETER     *d,             // IN: d (optional)
		      TPM2B_ECC_PARAMETER     *r              // IN: the computed r value (required)
		      );


#endif
