1 | /**
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2 | * \file padlock.h
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3 | *
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4 | * \brief VIA PadLock ACE for HW encryption/decryption supported by some
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5 | * processors
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6 | *
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7 | * \warning These functions are only for internal use by other library
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8 | * functions; you must not call them directly.
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9 | */
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10 | /*
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11 | * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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12 | * SPDX-License-Identifier: Apache-2.0
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13 | *
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14 | * Licensed under the Apache License, Version 2.0 (the "License"); you may
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15 | * not use this file except in compliance with the License.
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16 | * You may obtain a copy of the License at
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17 | *
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18 | * http://www.apache.org/licenses/LICENSE-2.0
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19 | *
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20 | * Unless required by applicable law or agreed to in writing, software
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21 | * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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22 | * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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23 | * See the License for the specific language governing permissions and
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24 | * limitations under the License.
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25 | *
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26 | * This file is part of mbed TLS (https://tls.mbed.org)
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27 | */
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28 | #ifndef MBEDTLS_PADLOCK_H
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29 | #define MBEDTLS_PADLOCK_H
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30 |
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31 | #if !defined(MBEDTLS_CONFIG_FILE)
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32 | #include "config.h"
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33 | #else
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34 | #include MBEDTLS_CONFIG_FILE
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35 | #endif
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36 |
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37 | #include "aes.h"
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38 |
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39 | #define MBEDTLS_ERR_PADLOCK_DATA_MISALIGNED -0x0030 /**< Input data should be aligned. */
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40 |
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41 | #if defined(__has_feature)
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42 | #if __has_feature(address_sanitizer)
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43 | #define MBEDTLS_HAVE_ASAN
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44 | #endif
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45 | #endif
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46 |
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47 | /* Some versions of ASan result in errors about not enough registers */
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48 | #if defined(MBEDTLS_HAVE_ASM) && defined(__GNUC__) && defined(__i386__) && \
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49 | !defined(MBEDTLS_HAVE_ASAN)
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50 |
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51 | #ifndef MBEDTLS_HAVE_X86
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52 | #define MBEDTLS_HAVE_X86
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53 | #endif
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54 |
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55 | #include <stdint.h>
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56 |
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57 | #define MBEDTLS_PADLOCK_RNG 0x000C
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58 | #define MBEDTLS_PADLOCK_ACE 0x00C0
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59 | #define MBEDTLS_PADLOCK_PHE 0x0C00
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60 | #define MBEDTLS_PADLOCK_PMM 0x3000
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61 |
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62 | #define MBEDTLS_PADLOCK_ALIGN16(x) (uint32_t *) (16 + ((int32_t) x & ~15))
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63 |
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64 | #ifdef __cplusplus
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65 | extern "C" {
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66 | #endif
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67 |
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68 | /**
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69 | * \brief Internal PadLock detection routine
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70 | *
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71 | * \note This function is only for internal use by other library
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72 | * functions; you must not call it directly.
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73 | *
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74 | * \param feature The feature to detect
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75 | *
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76 | * \return 1 if CPU has support for the feature, 0 otherwise
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77 | */
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78 | int mbedtls_padlock_has_support( int feature );
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79 |
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80 | /**
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81 | * \brief Internal PadLock AES-ECB block en(de)cryption
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82 | *
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83 | * \note This function is only for internal use by other library
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84 | * functions; you must not call it directly.
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85 | *
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86 | * \param ctx AES context
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87 | * \param mode MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT
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88 | * \param input 16-byte input block
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89 | * \param output 16-byte output block
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90 | *
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91 | * \return 0 if success, 1 if operation failed
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92 | */
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93 | int mbedtls_padlock_xcryptecb( mbedtls_aes_context *ctx,
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94 | int mode,
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95 | const unsigned char input[16],
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96 | unsigned char output[16] );
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97 |
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98 | /**
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99 | * \brief Internal PadLock AES-CBC buffer en(de)cryption
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100 | *
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101 | * \note This function is only for internal use by other library
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102 | * functions; you must not call it directly.
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103 | *
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104 | * \param ctx AES context
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105 | * \param mode MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT
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106 | * \param length length of the input data
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107 | * \param iv initialization vector (updated after use)
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108 | * \param input buffer holding the input data
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109 | * \param output buffer holding the output data
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110 | *
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111 | * \return 0 if success, 1 if operation failed
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112 | */
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113 | int mbedtls_padlock_xcryptcbc( mbedtls_aes_context *ctx,
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114 | int mode,
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115 | size_t length,
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116 | unsigned char iv[16],
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117 | const unsigned char *input,
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118 | unsigned char *output );
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119 |
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120 | #ifdef __cplusplus
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121 | }
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122 | #endif
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123 |
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124 | #endif /* HAVE_X86 */
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125 |
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126 | #endif /* padlock.h */
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