cipher_internal.h 3.7 KB

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