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