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Diffstat (limited to 'src/tpm2/crypto/openssl/TpmToOsslMath.h')
| -rw-r--r-- | src/tpm2/crypto/openssl/TpmToOsslMath.h | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/src/tpm2/crypto/openssl/TpmToOsslMath.h b/src/tpm2/crypto/openssl/TpmToOsslMath.h new file mode 100644 index 0000000..47333c7 --- /dev/null +++ b/src/tpm2/crypto/openssl/TpmToOsslMath.h @@ -0,0 +1,164 @@ +/********************************************************************************/ +/* */ +/* TPM to OpenSSL BigNum Shim Layer */ +/* Written by Ken Goldman */ +/* IBM Thomas J. Watson Research Center */ +/* $Id: TpmToOsslMath.h 1658 2021-01-22 23:14:01Z 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 */ +/* 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 - 2021 */ +/* */ +/********************************************************************************/ + +/* B.2.2.1. TpmToOsslMath.h */ +/* B.2.2.1.1. Introduction */ +/* This file contains the structure definitions used for ECC in the OpenSSL version of the + code. These definitions would change, based on the library. The ECC-related structures that cross + the TPM interface are defined in TpmTypes.h */ + +#ifndef MATH_LIB_DEFINED +#define MATH_LIB_DEFINED +#define MATH_LIB_OSSL +#include <openssl/evp.h> +#include <openssl/ec.h> + +#define SYMMETRIC_ALIGNMENT RADIX_BYTES + +#if 0 // libtpms added +#if OPENSSL_VERSION_NUMBER >= 0x10200000L +// Check the bignum_st definition in crypto/bn/bn_lcl.h and either update the +// version check or provide the new definition for this version. +# error Untested OpenSSL version +#elif OPENSSL_VERSION_NUMBER >= 0x10100000L +// from crypto/bn/bn_lcl.h +struct bignum_st { + BN_ULONG *d; + int top; + + int dmax; + int neg; + int flags; +}; +#if 0 // libtpms added +# define EC_POINT_get_affine_coordinates EC_POINT_get_affine_coordinates_GFp +# define EC_POINT_set_affine_coordinates EC_POINT_set_affine_coordinates_GFp +#endif // libtpms added +#endif // OPENSSL_VERSION_NUMBER +#endif // libtpms added + +#include <openssl/bn.h> +#if USE_OPENSSL_FUNCTIONS_ECDSA // libtpms added begin +#include <openssl/ecdsa.h> +#endif // libtpms added end + +/* B.2.2.2.2. Macros and Defines */ +/* Make sure that the library is using the correct size for a crypt word */ + +#if defined THIRTY_TWO_BIT && (RADIX_BITS != 32) \ + || ((defined SIXTY_FOUR_BIT_LONG || defined SIXTY_FOUR_BIT) \ + && (RADIX_BITS != 64)) +# error Ossl library is using different radix +#endif + +/* Allocate a local BIGNUM value. For the allocation, a bigNum structure is created as is a local + BIGNUM. The bigNum is initialized and then the BIGNUM is set to reference the local value. */ + +#define BIG_VAR(name, bits) \ + BN_VAR(name##Bn, (bits)); \ + BIGNUM *_##name = BN_new(); /* libtpms */ \ + BIGNUM *name = BigInitialized(_##name, /* libtpms */ \ + BnInit(name##Bn, \ + BYTES_TO_CRYPT_WORDS(sizeof(_##name##Bn.d)))) + +/* Allocate a BIGNUM and initialize with the values in a bigNum initializer */ + +#define BIG_INITIALIZED(name, initializer) \ + BIGNUM *_##name = BN_new(); /* libtpms */ \ + BIGNUM *name = BigInitialized(_##name, initializer) /* libtpms */ + +typedef struct +{ + const ECC_CURVE_DATA *C; // the TPM curve values + EC_GROUP *G; // group parameters + BN_CTX *CTX; // the context for the math (this might not be + // the context in which the curve was created>; +} OSSL_CURVE_DATA; +typedef OSSL_CURVE_DATA *bigCurve; +#define AccessCurveData(E) ((E)->C) + +#include "TpmToOsslSupport_fp.h" + +#define OSSL_ENTER() BN_CTX *CTX = OsslContextEnter() +#define OSSL_LEAVE() OsslContextLeave(CTX) + +/* Start and end a context that spans multiple ECC functions. This is used so that the group for the + curve can persist across multiple frames. */ + +#define CURVE_INITIALIZED(name, initializer) \ + OSSL_CURVE_DATA _##name; \ + bigCurve name = BnCurveInitialize(&_##name, initializer) + +#define CURVE_FREE(name) BnCurveFree(name) + +/* Start and end a local stack frame within the context of the curve frame */ +#if 0 /* kgold not used */ +#define ECC_ENTER() BN_CTX *CTX = OsslPushContext(E->CTX) +#define ECC_LEAVE() OsslPopContext(CTX) +#endif +#define BN_NEW() BnNewVariable(CTX) + + +/* This definition would change if there were something to report */ +#define MathLibSimulationEnd() +#endif // MATH_LIB_DEFINED + + |