1 /* Microsoft Reference Implementation for TPM 2.0 2 * 3 * The copyright in this software is being made available under the BSD License, 4 * included below. This software may be subject to other third party and 5 * contributor rights, including patent rights, and no such rights are granted 6 * under this license. 7 * 8 * Copyright (c) Microsoft Corporation 9 * 10 * All rights reserved. 11 * 12 * BSD License 13 * 14 * Redistribution and use in source and binary forms, with or without modification, 15 * are permitted provided that the following conditions are met: 16 * 17 * Redistributions of source code must retain the above copyright notice, this list 18 * of conditions and the following disclaimer. 19 * 20 * Redistributions in binary form must reproduce the above copyright notice, this 21 * list of conditions and the following disclaimer in the documentation and/or other 22 * materials provided with the distribution. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ""AS IS"" 25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 27 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR 28 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 29 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 30 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 31 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 //** Introduction 37 // 38 // This header file is used to 'splice' the wolfcrypt library into the TPM code. 39 40 #ifndef SYM_LIB_DEFINED 41 #define SYM_LIB_DEFINED 42 43 #define SYM_LIB_WOLF 44 45 #define SYM_ALIGNMENT RADIX_BYTES 46 47 #include <wolfssl/wolfcrypt/aes.h> 48 #include <wolfssl/wolfcrypt/des3.h> 49 50 //*************************************************************** 51 //** Links to the wolfCrypt AES code 52 //*************************************************************** 53 #if ALG_SM4 54 #undef ALG_SM4 55 #define ALG_SM4 ALG_NO 56 //#error "SM4 is not available" 57 #endif 58 59 #if ALG_CAMELLIA 60 #undef ALG_CAMELLIA 61 #define ALG_CAMELLIA ALG_NO 62 //#error "Camellia is not available" 63 #endif 64 65 // Define the order of parameters to the library functions that do block encryption 66 // and decryption. 67 typedef void(*TpmCryptSetSymKeyCall_t)( 68 void *keySchedule, 69 BYTE *out, 70 const BYTE *in 71 ); 72 73 // The Crypt functions that call the block encryption function use the parameters 74 // in the order: 75 // 1) keySchedule 76 // 2) in buffer 77 // 3) out buffer 78 // Since wolfcrypt uses the order in encryptoCall_t above, need to swizzle the 79 // values to the order required by the library. 80 #define SWIZZLE(keySchedule, in, out) \ 81 (void *)(keySchedule), (BYTE *)(out), (const BYTE *)(in) 82 83 // Macros to set up the encryption/decryption key schedules 84 // 85 // AES: 86 #define TpmCryptSetEncryptKeyAES(key, keySizeInBits, schedule) \ 87 wc_AesSetKeyDirect((tpmKeyScheduleAES *)(schedule), key, BITS_TO_BYTES(keySizeInBits), 0, AES_ENCRYPTION) 88 #define TpmCryptSetDecryptKeyAES(key, keySizeInBits, schedule) \ 89 wc_AesSetKeyDirect((tpmKeyScheduleAES *)(schedule), key, BITS_TO_BYTES(keySizeInBits), 0, AES_DECRYPTION) 90 91 // TDES: 92 #define TpmCryptSetEncryptKeyTDES(key, keySizeInBits, schedule) \ 93 TDES_setup_encrypt_key((key), (keySizeInBits), (tpmKeyScheduleTDES *)(schedule)) 94 #define TpmCryptSetDecryptKeyTDES(key, keySizeInBits, schedule) \ 95 TDES_setup_decrypt_key((key), (keySizeInBits), (tpmKeyScheduleTDES *)(schedule)) 96 97 // Macros to alias encryption calls to specific algorithms. This should be used 98 // sparingly. Currently, only used by CryptRand.c 99 // 100 // When using these calls, to call the AES block encryption code, the caller 101 // should use: 102 // TpmCryptEncryptAES(SWIZZLE(keySchedule, in, out)); 103 #define TpmCryptEncryptAES wc_AesEncryptDirect 104 #define TpmCryptDecryptAES wc_AesDecryptDirect 105 #define tpmKeyScheduleAES Aes 106 107 #define TpmCryptEncryptTDES TDES_encrypt 108 #define TpmCryptDecryptTDES TDES_decrypt 109 #define tpmKeyScheduleTDES Des3 110 111 typedef union tpmCryptKeySchedule_t tpmCryptKeySchedule_t; 112 113 #if ALG_TDES 114 #include "TpmToWolfDesSupport_fp.h" 115 #endif 116 117 // This definition would change if there were something to report 118 #define SymLibSimulationEnd() 119 120 #endif // SYM_LIB_DEFINED 121