cast.h 4.3 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596
  1. /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  2. * All rights reserved.
  3. *
  4. * This package is an SSL implementation written
  5. * by Eric Young (eay@cryptsoft.com).
  6. * The implementation was written so as to conform with Netscapes SSL.
  7. *
  8. * This library is free for commercial and non-commercial use as long as
  9. * the following conditions are aheared to. The following conditions
  10. * apply to all code found in this distribution, be it the RC4, RSA,
  11. * lhash, DES, etc., code; not just the SSL code. The SSL documentation
  12. * included with this distribution is covered by the same copyright terms
  13. * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  14. *
  15. * Copyright remains Eric Young's, and as such any Copyright notices in
  16. * the code are not to be removed.
  17. * If this package is used in a product, Eric Young should be given attribution
  18. * as the author of the parts of the library used.
  19. * This can be in the form of a textual message at program startup or
  20. * in documentation (online or textual) provided with the package.
  21. *
  22. * Redistribution and use in source and binary forms, with or without
  23. * modification, are permitted provided that the following conditions
  24. * are met:
  25. * 1. Redistributions of source code must retain the copyright
  26. * notice, this list of conditions and the following disclaimer.
  27. * 2. Redistributions in binary form must reproduce the above copyright
  28. * notice, this list of conditions and the following disclaimer in the
  29. * documentation and/or other materials provided with the distribution.
  30. * 3. All advertising materials mentioning features or use of this software
  31. * must display the following acknowledgement:
  32. * "This product includes cryptographic software written by
  33. * Eric Young (eay@cryptsoft.com)"
  34. * The word 'cryptographic' can be left out if the rouines from the library
  35. * being used are not cryptographic related :-).
  36. * 4. If you include any Windows specific code (or a derivative thereof) from
  37. * the apps directory (application code) you must include an acknowledgement:
  38. * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  39. *
  40. * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  41. * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  42. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  43. * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  44. * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  45. * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  46. * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  48. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  49. * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  50. * SUCH DAMAGE.
  51. *
  52. * The licence and distribution terms for any publically available version or
  53. * derivative of this code cannot be changed. i.e. this code cannot simply be
  54. * copied and put under another distribution licence
  55. * [including the GNU Public Licence.] */
  56. #ifndef OPENSSL_HEADER_CAST_H
  57. #define OPENSSL_HEADER_CAST_H
  58. #include <openssl/base.h>
  59. #ifdef __cplusplus
  60. extern "C" {
  61. #endif
  62. #define CAST_ENCRYPT 1
  63. #define CAST_DECRYPT 0
  64. #define CAST_BLOCK 8
  65. #define CAST_KEY_LENGTH 16
  66. typedef struct cast_key_st {
  67. uint32_t data[32];
  68. int short_key; // Use reduced rounds for short key
  69. } CAST_KEY;
  70. OPENSSL_EXPORT void CAST_set_key(CAST_KEY *key, size_t len,
  71. const uint8_t *data);
  72. OPENSSL_EXPORT void CAST_ecb_encrypt(const uint8_t *in, uint8_t *out,
  73. const CAST_KEY *key, int enc);
  74. OPENSSL_EXPORT void CAST_encrypt(uint32_t *data, const CAST_KEY *key);
  75. OPENSSL_EXPORT void CAST_decrypt(uint32_t *data, const CAST_KEY *key);
  76. OPENSSL_EXPORT void CAST_cbc_encrypt(const uint8_t *in, uint8_t *out,
  77. size_t length, const CAST_KEY *ks,
  78. uint8_t *iv, int enc);
  79. OPENSSL_EXPORT void CAST_cfb64_encrypt(const uint8_t *in, uint8_t *out,
  80. size_t length, const CAST_KEY *schedule,
  81. uint8_t *ivec, int *num, int enc);
  82. #ifdef __cplusplus
  83. }
  84. #endif
  85. #endif // OPENSSL_HEADER_CAST_H