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aes.h 5.2 KB

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  1. /* crypto/aes/aes.h -*- mode:C; c-file-style: "eay" -*- */
  2. /* ====================================================================
  3. * Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved.
  4. *
  5. * Redistribution and use in source and binary forms, with or without
  6. * modification, are permitted provided that the following conditions
  7. * are met:
  8. *
  9. * 1. Redistributions of source code must retain the above copyright
  10. * notice, this list of conditions and the following disclaimer.
  11. *
  12. * 2. Redistributions in binary form must reproduce the above copyright
  13. * notice, this list of conditions and the following disclaimer in
  14. * the documentation and/or other materials provided with the
  15. * distribution.
  16. *
  17. * 3. All advertising materials mentioning features or use of this
  18. * software must display the following acknowledgment:
  19. * "This product includes software developed by the OpenSSL Project
  20. * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  21. *
  22. * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  23. * endorse or promote products derived from this software without
  24. * prior written permission. For written permission, please contact
  25. * openssl-core@openssl.org.
  26. *
  27. * 5. Products derived from this software may not be called "OpenSSL"
  28. * nor may "OpenSSL" appear in their names without prior written
  29. * permission of the OpenSSL Project.
  30. *
  31. * 6. Redistributions of any form whatsoever must retain the following
  32. * acknowledgment:
  33. * "This product includes software developed by the OpenSSL Project
  34. * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  35. *
  36. * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  37. * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  38. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  39. * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
  40. * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  41. * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  42. * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  43. * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  44. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  45. * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  46. * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  47. * OF THE POSSIBILITY OF SUCH DAMAGE.
  48. * ====================================================================
  49. *
  50. */
  51. #ifndef HEADER_AES_H
  52. #define HEADER_AES_H
  53. #include <openssl/opensslconf.h>
  54. #ifdef OPENSSL_NO_AES
  55. #error AES is disabled.
  56. #endif
  57. #include <stddef.h>
  58. #define AES_ENCRYPT 1
  59. #define AES_DECRYPT 0
  60. /* Because array size can't be a const in C, the following two are macros.
  61. Both sizes are in bytes. */
  62. #define AES_MAXNR 14
  63. #define AES_BLOCK_SIZE 16
  64. #ifdef __cplusplus
  65. extern "C" {
  66. #endif
  67. /* This should be a hidden type, but EVP requires that the size be known */
  68. struct aes_key_st {
  69. #ifdef AES_LONG
  70. unsigned long rd_key[4 *(AES_MAXNR + 1)];
  71. #else
  72. unsigned int rd_key[4 *(AES_MAXNR + 1)];
  73. #endif
  74. int rounds;
  75. };
  76. typedef struct aes_key_st AES_KEY;
  77. const char *AES_options(void);
  78. int AES_set_encrypt_key(const unsigned char *userKey, const int bits,
  79. AES_KEY *key);
  80. int AES_set_decrypt_key(const unsigned char *userKey, const int bits,
  81. AES_KEY *key);
  82. void AES_encrypt(const unsigned char *in, unsigned char *out,
  83. const AES_KEY *key);
  84. void AES_decrypt(const unsigned char *in, unsigned char *out,
  85. const AES_KEY *key);
  86. void AES_ecb_encrypt(const unsigned char *in, unsigned char *out,
  87. const AES_KEY *key, const int enc);
  88. void AES_cbc_encrypt(const unsigned char *in, unsigned char *out,
  89. size_t length, const AES_KEY *key,
  90. unsigned char *ivec, const int enc);
  91. void AES_cfb128_encrypt(const unsigned char *in, unsigned char *out,
  92. size_t length, const AES_KEY *key,
  93. unsigned char *ivec, int *num, const int enc);
  94. void AES_cfb1_encrypt(const unsigned char *in, unsigned char *out,
  95. size_t length, const AES_KEY *key,
  96. unsigned char *ivec, int *num, const int enc);
  97. void AES_cfb8_encrypt(const unsigned char *in, unsigned char *out,
  98. size_t length, const AES_KEY *key,
  99. unsigned char *ivec, int *num, const int enc);
  100. void AES_ofb128_encrypt(const unsigned char *in, unsigned char *out,
  101. size_t length, const AES_KEY *key,
  102. unsigned char *ivec, int *num);
  103. #if 0
  104. void AES_ctr128_encrypt(const unsigned char *in, unsigned char *out,
  105. size_t length, const AES_KEY *key,
  106. unsigned char ivec[AES_BLOCK_SIZE],
  107. unsigned char ecount_buf[AES_BLOCK_SIZE],
  108. unsigned int *num);
  109. #endif
  110. /* NB: the IV is _two_ blocks long */
  111. void AES_ige_encrypt(const unsigned char *in, unsigned char *out,
  112. size_t length, const AES_KEY *key,
  113. unsigned char *ivec, const int enc);
  114. /* NB: the IV is _four_ blocks long */
  115. void AES_bi_ige_encrypt(const unsigned char *in, unsigned char *out,
  116. size_t length, const AES_KEY *key,
  117. const AES_KEY *key2, const unsigned char *ivec,
  118. const int enc);
  119. int AES_wrap_key(AES_KEY *key, const unsigned char *iv,
  120. unsigned char *out,
  121. const unsigned char *in, unsigned int inlen);
  122. int AES_unwrap_key(AES_KEY *key, const unsigned char *iv,
  123. unsigned char *out,
  124. const unsigned char *in, unsigned int inlen);
  125. #ifdef __cplusplus
  126. }
  127. #endif
  128. #endif /* !HEADER_AES_H */