diff options
Diffstat (limited to 'src/tpm2/crypto/openssl/TpmToOsslSupport.c')
| -rw-r--r-- | src/tpm2/crypto/openssl/TpmToOsslSupport.c | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/src/tpm2/crypto/openssl/TpmToOsslSupport.c b/src/tpm2/crypto/openssl/TpmToOsslSupport.c new file mode 100644 index 0000000..921b02f --- /dev/null +++ b/src/tpm2/crypto/openssl/TpmToOsslSupport.c @@ -0,0 +1,129 @@ +/********************************************************************************/ +/* */ +/* Initialization of the Interface to the OpenSSL Library. */ +/* Written by Ken Goldman */ +/* IBM Thomas J. Watson Research Center */ +/* $Id: TpmToOsslSupport.c 1519 2019-11-15 20:43:51Z 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 - 2019 */ +/* */ +/********************************************************************************/ + +/* B.2.3.3. TpmToOsslSupport.c */ +/* B.2.3.3.1. Introduction */ +/* The functions in this file are used for initialization of the interface to the OpenSSL + library. */ +/* B.2.3.3.2. Defines and Includes */ +#include "Tpm.h" + +#if defined(HASH_LIB_OSSL) || defined(MATH_LIB_OSSL) || defined(SYM_LIB_OSSL) + +/* Used to pass the pointers to the correct sub-keys */ +typedef const BYTE *desKeyPointers[3]; +/* B.2.3.3.2.1. SupportLibInit() */ +/* This does any initialization required by the support library. */ +LIB_EXPORT int +SupportLibInit( + void + ) +{ + return TRUE; +} +/* B.2.3.3.2.2. OsslContextEnter() */ +/* This function is used to initialize an OpenSSL context at the start of a function that will + call to an OpenSSL math function. */ +BN_CTX * +OsslContextEnter( + void + ) +{ + BN_CTX *CTX = BN_CTX_new(); + return OsslPushContext(CTX); +} +/* B.2.3.3.2.3. OsslContextLeave() */ +/* This is the companion function to OsslContextEnter(). */ +void +OsslContextLeave( + BN_CTX *CTX + ) +{ + OsslPopContext(CTX); + BN_CTX_free(CTX); +} + +/* B.2.3.3.2.4. OsslPushContext() */ +/* This function is used to create a frame in a context. All values allocated within this context after the frame is started will be automatically freed when the context (OsslPopContext() */ +BN_CTX * +OsslPushContext( + BN_CTX *CTX + ) +{ + if(CTX == NULL) + FAIL(FATAL_ERROR_ALLOCATION); + BN_CTX_start(CTX); + return CTX; +} + +/* B.2.3.3.2.5. OsslPopContext() */ +/* This is the companion function to OsslPushContext(). */ +void +OsslPopContext( + BN_CTX *CTX + ) +{ + // BN_CTX_end can't be called with NULL. It will blow up. + if(CTX != NULL) + BN_CTX_end(CTX); +} + +#endif // HASH_LIB_OSSL || MATH_LIB_OSSL || SYM_LIB_OSSL |