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 The Mbed TLS Contributors 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 #ifndef MBEDTLS_PADLOCK_H 27 #define MBEDTLS_PADLOCK_H 28 29 #if !defined(MBEDTLS_CONFIG_FILE) 30 #include "mbedtls/config.h" 31 #else 32 #include MBEDTLS_CONFIG_FILE 33 #endif 34 35 #include "mbedtls/aes.h" 36 37 #define MBEDTLS_ERR_PADLOCK_DATA_MISALIGNED -0x0030 /**< Input data should be aligned. */ 38 39 #if defined(__has_feature) 40 #if __has_feature(address_sanitizer) 41 #define MBEDTLS_HAVE_ASAN 42 #endif 43 #endif 44 45 /* Some versions of ASan result in errors about not enough registers */ 46 #if defined(MBEDTLS_HAVE_ASM) && defined(__GNUC__) && defined(__i386__) && \ 47 !defined(MBEDTLS_HAVE_ASAN) 48 49 #ifndef MBEDTLS_HAVE_X86 50 #define MBEDTLS_HAVE_X86 51 #endif 52 53 #include <stdint.h> 54 55 #define MBEDTLS_PADLOCK_RNG 0x000C 56 #define MBEDTLS_PADLOCK_ACE 0x00C0 57 #define MBEDTLS_PADLOCK_PHE 0x0C00 58 #define MBEDTLS_PADLOCK_PMM 0x3000 59 60 #define MBEDTLS_PADLOCK_ALIGN16(x) (uint32_t *) (16 + ((int32_t) (x) & ~15)) 61 62 #ifdef __cplusplus 63 extern "C" { 64 #endif 65 66 /** 67 * \brief Internal PadLock detection routine 68 * 69 * \note This function is only for internal use by other library 70 * functions; you must not call it directly. 71 * 72 * \param feature The feature to detect 73 * 74 * \return 1 if CPU has support for the feature, 0 otherwise 75 */ 76 int mbedtls_padlock_has_support( int feature ); 77 78 /** 79 * \brief Internal PadLock AES-ECB block en(de)cryption 80 * 81 * \note This function is only for internal use by other library 82 * functions; you must not call it directly. 83 * 84 * \param ctx AES context 85 * \param mode MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT 86 * \param input 16-byte input block 87 * \param output 16-byte output block 88 * 89 * \return 0 if success, 1 if operation failed 90 */ 91 int mbedtls_padlock_xcryptecb( mbedtls_aes_context *ctx, 92 int mode, 93 const unsigned char input[16], 94 unsigned char output[16] ); 95 96 /** 97 * \brief Internal PadLock AES-CBC buffer en(de)cryption 98 * 99 * \note This function is only for internal use by other library 100 * functions; you must not call it directly. 101 * 102 * \param ctx AES context 103 * \param mode MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT 104 * \param length length of the input data 105 * \param iv initialization vector (updated after use) 106 * \param input buffer holding the input data 107 * \param output buffer holding the output data 108 * 109 * \return 0 if success, 1 if operation failed 110 */ 111 int mbedtls_padlock_xcryptcbc( mbedtls_aes_context *ctx, 112 int mode, 113 size_t length, 114 unsigned char iv[16], 115 const unsigned char *input, 116 unsigned char *output ); 117 118 #ifdef __cplusplus 119 } 120 #endif 121 122 #endif /* HAVE_X86 */ 123 124 #endif /* padlock.h */ 125