1 | /**
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2 | * \file cipher_internal.h
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3 | *
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4 | * \brief Cipher wrappers.
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5 | *
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6 | * \author Adriaan de Jong <dejong@fox-it.com>
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7 | */
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8 | /*
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9 | * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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10 | * SPDX-License-Identifier: Apache-2.0
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11 | *
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12 | * Licensed under the Apache License, Version 2.0 (the "License"); you may
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13 | * not use this file except in compliance with the License.
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14 | * You may obtain a copy of the License at
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15 | *
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16 | * http://www.apache.org/licenses/LICENSE-2.0
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17 | *
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18 | * Unless required by applicable law or agreed to in writing, software
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19 | * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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20 | * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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21 | * See the License for the specific language governing permissions and
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22 | * limitations under the License.
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23 | *
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24 | * This file is part of mbed TLS (https://tls.mbed.org)
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25 | */
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26 | #ifndef MBEDTLS_CIPHER_WRAP_H
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27 | #define MBEDTLS_CIPHER_WRAP_H
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28 |
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29 | #if !defined(MBEDTLS_CONFIG_FILE)
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30 | #include "config.h"
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31 | #else
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32 | #include MBEDTLS_CONFIG_FILE
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33 | #endif
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34 |
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35 | #include "cipher.h"
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36 |
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37 | #ifdef __cplusplus
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38 | extern "C" {
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39 | #endif
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40 |
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41 | /**
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42 | * Base cipher information. The non-mode specific functions and values.
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43 | */
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44 | struct mbedtls_cipher_base_t
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45 | {
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46 | /** Base Cipher type (e.g. MBEDTLS_CIPHER_ID_AES) */
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47 | mbedtls_cipher_id_t cipher;
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48 |
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49 | /** Encrypt using ECB */
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50 | int (*ecb_func)( void *ctx, mbedtls_operation_t mode,
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51 | const unsigned char *input, unsigned char *output );
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52 |
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53 | #if defined(MBEDTLS_CIPHER_MODE_CBC)
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54 | /** Encrypt using CBC */
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55 | int (*cbc_func)( void *ctx, mbedtls_operation_t mode, size_t length,
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56 | unsigned char *iv, const unsigned char *input,
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57 | unsigned char *output );
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58 | #endif
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59 |
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60 | #if defined(MBEDTLS_CIPHER_MODE_CFB)
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61 | /** Encrypt using CFB (Full length) */
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62 | int (*cfb_func)( void *ctx, mbedtls_operation_t mode, size_t length, size_t *iv_off,
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63 | unsigned char *iv, const unsigned char *input,
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64 | unsigned char *output );
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65 | #endif
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66 |
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67 | #if defined(MBEDTLS_CIPHER_MODE_OFB)
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68 | /** Encrypt using OFB (Full length) */
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69 | int (*ofb_func)( void *ctx, size_t length, size_t *iv_off,
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70 | unsigned char *iv,
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71 | const unsigned char *input,
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72 | unsigned char *output );
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73 | #endif
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74 |
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75 | #if defined(MBEDTLS_CIPHER_MODE_CTR)
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76 | /** Encrypt using CTR */
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77 | int (*ctr_func)( void *ctx, size_t length, size_t *nc_off,
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78 | unsigned char *nonce_counter, unsigned char *stream_block,
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79 | const unsigned char *input, unsigned char *output );
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80 | #endif
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81 |
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82 | #if defined(MBEDTLS_CIPHER_MODE_XTS)
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83 | /** Encrypt or decrypt using XTS. */
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84 | int (*xts_func)( void *ctx, mbedtls_operation_t mode, size_t length,
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85 | const unsigned char data_unit[16],
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86 | const unsigned char *input, unsigned char *output );
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87 | #endif
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88 |
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89 | #if defined(MBEDTLS_CIPHER_MODE_STREAM)
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90 | /** Encrypt using STREAM */
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91 | int (*stream_func)( void *ctx, size_t length,
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92 | const unsigned char *input, unsigned char *output );
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93 | #endif
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94 |
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95 | /** Set key for encryption purposes */
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96 | int (*setkey_enc_func)( void *ctx, const unsigned char *key,
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97 | unsigned int key_bitlen );
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98 |
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99 | /** Set key for decryption purposes */
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100 | int (*setkey_dec_func)( void *ctx, const unsigned char *key,
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101 | unsigned int key_bitlen);
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102 |
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103 | /** Allocate a new context */
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104 | void * (*ctx_alloc_func)( void );
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105 |
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106 | /** Free the given context */
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107 | void (*ctx_free_func)( void *ctx );
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108 |
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109 | };
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110 |
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111 | typedef struct
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112 | {
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113 | mbedtls_cipher_type_t type;
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114 | const mbedtls_cipher_info_t *info;
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115 | } mbedtls_cipher_definition_t;
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116 |
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117 | extern const mbedtls_cipher_definition_t mbedtls_cipher_definitions[];
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118 |
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119 | extern int mbedtls_cipher_supported[];
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120 |
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121 | #ifdef __cplusplus
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122 | }
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123 | #endif
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124 |
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125 | #endif /* MBEDTLS_CIPHER_WRAP_H */
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