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: Apache-2.0 13 * 14 * Licensed under the Apache License, Version 2.0 (the "License"); you may 15 * not use this file except in compliance with the License. 16 * You may obtain a copy of the License at 17 * 18 * http://www.apache.org/licenses/LICENSE-2.0 19 * 20 * Unless required by applicable law or agreed to in writing, software 21 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 22 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 23 * See the License for the specific language governing permissions and 24 * limitations under the License. 25 * 26 * This file is part of mbed TLS (https://tls.mbed.org) 27 */ 28 #ifndef MBEDTLS_PADLOCK_H 29 #define MBEDTLS_PADLOCK_H 30 31 #if !defined(MBEDTLS_CONFIG_FILE) 32 #include "config.h" 33 #else 34 #include MBEDTLS_CONFIG_FILE 35 #endif 36 37 #include "aes.h" 38 39 #define MBEDTLS_ERR_PADLOCK_DATA_MISALIGNED -0x0030 /**< Input data should be aligned. */ 40 41 #if defined(__has_feature) 42 #if __has_feature(address_sanitizer) 43 #define MBEDTLS_HAVE_ASAN 44 #endif 45 #endif 46 47 /* Some versions of ASan result in errors about not enough registers */ 48 #if defined(MBEDTLS_HAVE_ASM) && defined(__GNUC__) && defined(__i386__) && \ 49 !defined(MBEDTLS_HAVE_ASAN) 50 51 #ifndef MBEDTLS_HAVE_X86 52 #define MBEDTLS_HAVE_X86 53 #endif 54 55 #include <stdint.h> 56 57 #define MBEDTLS_PADLOCK_RNG 0x000C 58 #define MBEDTLS_PADLOCK_ACE 0x00C0 59 #define MBEDTLS_PADLOCK_PHE 0x0C00 60 #define MBEDTLS_PADLOCK_PMM 0x3000 61 62 #define MBEDTLS_PADLOCK_ALIGN16(x) (uint32_t *) (16 + ((int32_t) (x) & ~15)) 63 64 #ifdef __cplusplus 65 extern "C" { 66 #endif 67 68 /** 69 * \brief Internal PadLock detection routine 70 * 71 * \note This function is only for internal use by other library 72 * functions; you must not call it directly. 73 * 74 * \param feature The feature to detect 75 * 76 * \return 1 if CPU has support for the feature, 0 otherwise 77 */ 78 int mbedtls_padlock_has_support( int feature ); 79 80 /** 81 * \brief Internal PadLock AES-ECB block en(de)cryption 82 * 83 * \note This function is only for internal use by other library 84 * functions; you must not call it directly. 85 * 86 * \param ctx AES context 87 * \param mode MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT 88 * \param input 16-byte input block 89 * \param output 16-byte output block 90 * 91 * \return 0 if success, 1 if operation failed 92 */ 93 int mbedtls_padlock_xcryptecb( mbedtls_aes_context *ctx, 94 int mode, 95 const unsigned char input[16], 96 unsigned char output[16] ); 97 98 /** 99 * \brief Internal PadLock AES-CBC buffer en(de)cryption 100 * 101 * \note This function is only for internal use by other library 102 * functions; you must not call it directly. 103 * 104 * \param ctx AES context 105 * \param mode MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT 106 * \param length length of the input data 107 * \param iv initialization vector (updated after use) 108 * \param input buffer holding the input data 109 * \param output buffer holding the output data 110 * 111 * \return 0 if success, 1 if operation failed 112 */ 113 int mbedtls_padlock_xcryptcbc( mbedtls_aes_context *ctx, 114 int mode, 115 size_t length, 116 unsigned char iv[16], 117 const unsigned char *input, 118 unsigned char *output ); 119 120 #ifdef __cplusplus 121 } 122 #endif 123 124 #endif /* HAVE_X86 */ 125 126 #endif /* padlock.h */ 127