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/********************************************************************************/
/* */
/* For Selected Math Library */
/* Written by Ken Goldman */
/* IBM Thomas J. Watson Research Center */
/* $Id: SupportLibraryFunctionPrototypes_fp.h 1529 2019-11-21 23:29:01Z 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 */
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/* liability, including liability for infringement of any proprietary */
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/* (c) Copyright IBM Corp. and others, 2016 - 2019 */
/* */
/********************************************************************************/
#ifndef SUPPORT_LIBRARY_FUNCTION_PROTOTYPES_H
#define SUPPORT_LIBRARY_FUNCTION_PROTOTYPES_H
/* 10.1.11 SupportLibraryFunctionPrototypes_fp.h */
/* 10.1.11.1 Introduction */
/* This file contains the function prototypes for the functions that need to be present in the
selected math library. For each function listed, there should be a small stub function. That
stub provides the interface between the TPM code and the support library. In most cases, the stub
function will only need to do a format conversion between the TPM big number and the support
library big number. The TPM big number format was chosen to make this relatively simple and
fast. */
/* 10.1.11.2 SupportLibInit() */
/* This function is called by CryptInit() so that necessary initializations can be performed on the
cryptographic library. */
LIB_EXPORT
int SupportLibInit(void);
/* 10.1.11.3 MathLibraryCompatibililtyCheck() */
/* This function is only used during development to make sure that the library that is being
referenced is using the same size of data structures as the TPM. */
BOOL
MathLibraryCompatibilityCheck(
void
);
/* 10.1.1114 BnModMult() */
/* Does multiply op1 * op2 and divide by modulus returning the remainder of the divide. */
LIB_EXPORT BOOL
BnModMult(bigNum result, bigConst op1, bigConst op2, bigConst modulus);
/* 10.1.11.5 BnMult() */
/* Multiplies two numbers and returns the result */
LIB_EXPORT BOOL BnMult(bigNum result, bigConst multiplicand, bigConst multiplier);
/* 10.1.11.6 BnDiv() */
/* This function divides two bigNum values. The function returns FALSE if there is an error in the
operation. */
LIB_EXPORT BOOL BnDiv(bigNum quotient, bigNum remainder,
bigConst dividend, bigConst divisor);
/* 10.1.11.7 BnMod() */
#define BnMod(a, b) BnDiv(NULL, (a), (a), (b))
/* 10.1.11.8 BnGcd() */
/* Get the greatest common divisor of two numbers. This function is only needed when the TPM
implements RSA. */
LIB_EXPORT BOOL BnGcd(bigNum gcd, bigConst number1, bigConst number2);
/* 10.1.11.9 BnModExp() */
/* Do modular exponentiation using bigNum values. This function is only needed when the TPM
implements RSA. */
LIB_EXPORT BOOL BnModExp(bigNum result, bigConst number,
bigConst exponent, bigConst modulus);
/* 10.1.11.10 BnModInverse() */
/* Modular multiplicative inverse. This function is only needed when the TPM implements RSA. */
LIB_EXPORT BOOL BnModInverse(bigNum result, bigConst number,
bigConst modulus);
/* 10.1.11.11 BnEccModMult() */
/* This function does a point multiply of the form R = [d]S. A return of FALSE indicates that the
result was the point at infinity. This function is only needed if the TPM supports ECC. */
LIB_EXPORT BOOL BnEccModMult(bigPoint R, pointConst S, bigConst d, bigCurve E);
/* 10.1.11.13 BnEccModMult2() */
/* This function does a point multiply of the form R = [d]S + [u]Q. A return of FALSE indicates that
the result was the point at infinity. This function is only needed if the TPM supports ECC */
LIB_EXPORT BOOL BnEccModMult2(bigPoint R, pointConst S, bigConst d,
pointConst Q, bigConst u, bigCurve E);
/* 10.1.11.14 BnEccAdd() */
/* This function does a point add R = S + Q. A return of FALSE indicates that the result was the
point at infinity. This function is only needed if the TPM supports ECC. */
LIB_EXPORT BOOL BnEccAdd(bigPoint R, pointConst S, pointConst Q, bigCurve E);
/* 10.1.11.15 BnCurveInitialize() */
/* This function is used to initialize the pointers of a bnCurve_t structure. The structure is a set
of pointers to bigNum values. The curve-dependent values are set by a different function. This
function is only needed if the TPM supports ECC.*/
LIB_EXPORT bigCurve BnCurveInitialize(bigCurve E, TPM_ECC_CURVE curveId);
/* 10.1.11.16 BnCurveFree() */
/* This function will free the allocated components of the curve and end the frame in which the
curve data exists */
LIB_EXPORT void BnCurveFree(bigCurve E);
#endif
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