1 /** 2 * \file padlock.h 3 * 4 * \brief VIA PadLock ACE for HW encryption/decryption supported by some 5 * processors 6 * 7 * \warning These functions are only for internal use by other library 8 * functions; you must not call them directly. 9 */ 10 /* 11 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved 12 * SPDX-License-Identifier: GPL-2.0 13 * 14 * This program is free software; you can redistribute it and/or modify 15 * it under the terms of the GNU General Public License as published by 16 * the Free Software Foundation; either version 2 of the License, or 17 * (at your option) any later version. 18 * 19 * This program is distributed in the hope that it will be useful, 20 * but WITHOUT ANY WARRANTY; without even the implied warranty of 21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 22 * GNU General Public License for more details. 23 * 24 * You should have received a copy of the GNU General Public License along 25 * with this program; if not, write to the Free Software Foundation, Inc., 26 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 27 * 28 * This file is part of mbed TLS (https://tls.mbed.org) 29 */ 30 #ifndef MBEDTLS_PADLOCK_H 31 #define MBEDTLS_PADLOCK_H 32 33 #include "aes.h" 34 35 #define MBEDTLS_ERR_PADLOCK_DATA_MISALIGNED -0x0030 /**< Input data should be aligned. */ 36 37 #if defined(__has_feature) 38 #if __has_feature(address_sanitizer) 39 #define MBEDTLS_HAVE_ASAN 40 #endif 41 #endif 42 43 /* Some versions of ASan result in errors about not enough registers */ 44 #if defined(MBEDTLS_HAVE_ASM) && defined(__GNUC__) && defined(__i386__) && \ 45 !defined(MBEDTLS_HAVE_ASAN) 46 47 #ifndef MBEDTLS_HAVE_X86 48 #define MBEDTLS_HAVE_X86 49 #endif 50 51 #include <stdint.h> 52 53 #define MBEDTLS_PADLOCK_RNG 0x000C 54 #define MBEDTLS_PADLOCK_ACE 0x00C0 55 #define MBEDTLS_PADLOCK_PHE 0x0C00 56 #define MBEDTLS_PADLOCK_PMM 0x3000 57 58 #define MBEDTLS_PADLOCK_ALIGN16(x) (uint32_t *) (16 + ((int32_t) x & ~15)) 59 60 #ifdef __cplusplus 61 extern "C" { 62 #endif 63 64 /** 65 * \brief Internal PadLock detection routine 66 * 67 * \note This function is only for internal use by other library 68 * functions; you must not call it directly. 69 * 70 * \param feature The feature to detect 71 * 72 * \return 1 if CPU has support for the feature, 0 otherwise 73 */ 74 int mbedtls_padlock_has_support( int feature ); 75 76 /** 77 * \brief Internal PadLock AES-ECB block en(de)cryption 78 * 79 * \note This function is only for internal use by other library 80 * functions; you must not call it directly. 81 * 82 * \param ctx AES context 83 * \param mode MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT 84 * \param input 16-byte input block 85 * \param output 16-byte output block 86 * 87 * \return 0 if success, 1 if operation failed 88 */ 89 int mbedtls_padlock_xcryptecb( mbedtls_aes_context *ctx, 90 int mode, 91 const unsigned char input[16], 92 unsigned char output[16] ); 93 94 /** 95 * \brief Internal PadLock AES-CBC buffer en(de)cryption 96 * 97 * \note This function is only for internal use by other library 98 * functions; you must not call it directly. 99 * 100 * \param ctx AES context 101 * \param mode MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT 102 * \param length length of the input data 103 * \param iv initialization vector (updated after use) 104 * \param input buffer holding the input data 105 * \param output buffer holding the output data 106 * 107 * \return 0 if success, 1 if operation failed 108 */ 109 int mbedtls_padlock_xcryptcbc( mbedtls_aes_context *ctx, 110 int mode, 111 size_t length, 112 unsigned char iv[16], 113 const unsigned char *input, 114 unsigned char *output ); 115 116 #ifdef __cplusplus 117 } 118 #endif 119 120 #endif /* HAVE_X86 */ 121 122 #endif /* padlock.h */ 123