/********************************************************************************/
/*										*/
/*			  TPM to OpenSSL BigNum Shim Layer			*/
/*			     Written by Ken Goldman				*/
/*		       IBM Thomas J. Watson Research Center			*/
/*            $Id: TpmToOsslMath_fp.h 1519 2019-11-15 20:43:51Z kgoldman $	*/
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/********************************************************************************/

#ifndef TPMTOOSSLMATH_FP_H
#define TPMTOOSSLMATH_FP_H

#include <openssl/bn.h>

BOOL
OsslToTpmBn(
	    bigNum          bn,
	    BIGNUM          *osslBn
	    );
BIGNUM *
BigInitialized(
	       BIGNUM             *toInit,
	       bigConst            initializer
	       );
LIB_EXPORT BOOL
BnModMult(
	  bigNum              result,
	  bigConst            op1,
	  bigConst            op2,
	  bigConst            modulus
	  );
LIB_EXPORT BOOL
BnMult(
       bigNum               result,
       bigConst             multiplicand,
       bigConst             multiplier
       );
LIB_EXPORT BOOL
BnDiv(
      bigNum               quotient,
      bigNum               remainder,
      bigConst             dividend,
      bigConst             divisor
      );
LIB_EXPORT BOOL
BnGcd(
      bigNum      gcd,            // OUT: the common divisor
      bigConst    number1,        // IN:
      bigConst    number2         // IN:
      );
LIB_EXPORT BOOL
BnModExp(
	 bigNum               result,         // OUT: the result
	 bigConst             number,         // IN: number to exponentiate
	 bigConst             exponent,       // IN:
	 bigConst             modulus         // IN:
	 );
LIB_EXPORT BOOL
BnModInverse(
	     bigNum               result,
	     bigConst             number,
	     bigConst             modulus
	     );
bigCurve
BnCurveInitialize(
		  bigCurve          E,           // IN: curve structure to initialize
		  TPM_ECC_CURVE     curveId      // IN: curve identifier
		  );
LIB_EXPORT BOOL
BnEccModMult(
	     bigPoint             R,         // OUT: computed point
	     pointConst           S,         // IN: point to multiply by 'd' (optional)
	     bigConst             d,         // IN: scalar for [d]S
	     bigCurve             E
	     );
LIB_EXPORT BOOL
BnEccModMult2(
	      bigPoint             R,         // OUT: computed point
	      pointConst           S,         // IN: optional point
	      bigConst             d,         // IN: scalar for [d]S or [d]G
	      pointConst           Q,         // IN: second point
	      bigConst             u,         // IN: second scalar
	      bigCurve             E          // IN: curve
	      );
LIB_EXPORT BOOL
BnEccAdd(
	 bigPoint             R,         // OUT: computed point
	 pointConst           S,         // IN: point to multiply by 'd'
	 pointConst           Q,         // IN: second point
	 bigCurve             E          // IN: curve
	 );

#endif
