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Diffstat (limited to 'src/tpm2/crypto/openssl/TpmToOsslDesSupport.c')
| -rw-r--r-- | src/tpm2/crypto/openssl/TpmToOsslDesSupport.c | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/src/tpm2/crypto/openssl/TpmToOsslDesSupport.c b/src/tpm2/crypto/openssl/TpmToOsslDesSupport.c new file mode 100644 index 0000000..d27aad2 --- /dev/null +++ b/src/tpm2/crypto/openssl/TpmToOsslDesSupport.c @@ -0,0 +1,119 @@ +/********************************************************************************/ +/* */ +/* TPM DES Support */ +/* Written by Ken Goldman */ +/* IBM Thomas J. Watson Research Center */ +/* $Id: TpmToOsslDesSupport.c 1476 2019-06-10 19:32:03Z 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.2.3.1. TpmToOsslDesSupport.c */ +/* B.2.3.1.1. Introduction */ +/* The functions in this file are used for initialization of the interface to the OpenSSL + library. */ +/* B.2.3.1.2. Defines and Includes */ +#include "Tpm.h" +#if (defined SYM_LIB_OSSL) && ALG_TDES +/* B.2.3.1.3. Functions */ +/* B.2.3.1.3.1. TDES_set_encyrpt_key() */ +/* This function makes creation of a TDES key look like the creation of a key for any of the other + OpenSSL block ciphers. It will create three key schedules, one for each of the DES keys. If + there are only two keys, then the third schedule is a copy of the first. */ +void +TDES_set_encrypt_key( + const BYTE *key, + UINT16 keySizeInBits, + tpmKeyScheduleTDES *keySchedule + ) +{ + DES_set_key_unchecked((const_DES_cblock *)key, &keySchedule[0]); + DES_set_key_unchecked((const_DES_cblock *)&key[8], &keySchedule[1]); + // If is two-key, copy the schedule for K1 into K3, otherwise, compute the + // the schedule for K3 + if(keySizeInBits == 128) + keySchedule[2] = keySchedule[0]; + else + DES_set_key_unchecked((const_DES_cblock *)&key[16], + &keySchedule[2]); +} +/* B.2.3.1.3.2. TDES_encyrpt() */ +/* The TPM code uses one key schedule. For TDES, the schedule contains three schedules. OpenSSL + wants the schedules referenced separately. This function does that. */ +void TDES_encrypt( + const BYTE *in, + BYTE *out, + tpmKeyScheduleTDES *ks + ) +{ + DES_ecb3_encrypt((const_DES_cblock *)in, (DES_cblock *)out, + &ks[0], &ks[1], &ks[2], + DES_ENCRYPT); +} +#if !USE_OPENSSL_FUNCTIONS_SYMMETRIC +/* B.2.3.1.3.3. TDES_decrypt() */ +/* As with TDES_encypt() this function bridges between the TPM single schedule model and the + OpenSSL three schedule model. */ +void TDES_decrypt( + const BYTE *in, + BYTE *out, + tpmKeyScheduleTDES *ks + ) +{ + DES_ecb3_encrypt((const_DES_cblock *)in, (DES_cblock *)out, + &ks[0], &ks[1], &ks[2], + DES_DECRYPT); +} +#endif // !USE_OPENSSL_FUNCTIONS_SYMMETRIC +#endif // SYM_LIB_OSSL |