2
0

hmac.h 4.4 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109
  1. /* crypto/hmac/hmac.h */
  2. /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  3. * All rights reserved.
  4. *
  5. * This package is an SSL implementation written
  6. * by Eric Young (eay@cryptsoft.com).
  7. * The implementation was written so as to conform with Netscapes SSL.
  8. *
  9. * This library is free for commercial and non-commercial use as long as
  10. * the following conditions are aheared to. The following conditions
  11. * apply to all code found in this distribution, be it the RC4, RSA,
  12. * lhash, DES, etc., code; not just the SSL code. The SSL documentation
  13. * included with this distribution is covered by the same copyright terms
  14. * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15. *
  16. * Copyright remains Eric Young's, and as such any Copyright notices in
  17. * the code are not to be removed.
  18. * If this package is used in a product, Eric Young should be given attribution
  19. * as the author of the parts of the library used.
  20. * This can be in the form of a textual message at program startup or
  21. * in documentation (online or textual) provided with the package.
  22. *
  23. * Redistribution and use in source and binary forms, with or without
  24. * modification, are permitted provided that the following conditions
  25. * are met:
  26. * 1. Redistributions of source code must retain the copyright
  27. * notice, this list of conditions and the following disclaimer.
  28. * 2. Redistributions in binary form must reproduce the above copyright
  29. * notice, this list of conditions and the following disclaimer in the
  30. * documentation and/or other materials provided with the distribution.
  31. * 3. All advertising materials mentioning features or use of this software
  32. * must display the following acknowledgement:
  33. * "This product includes cryptographic software written by
  34. * Eric Young (eay@cryptsoft.com)"
  35. * The word 'cryptographic' can be left out if the rouines from the library
  36. * being used are not cryptographic related :-).
  37. * 4. If you include any Windows specific code (or a derivative thereof) from
  38. * the apps directory (application code) you must include an acknowledgement:
  39. * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40. *
  41. * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42. * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44. * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45. * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46. * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47. * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50. * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51. * SUCH DAMAGE.
  52. *
  53. * The licence and distribution terms for any publically available version or
  54. * derivative of this code cannot be changed. i.e. this code cannot simply be
  55. * copied and put under another distribution licence
  56. * [including the GNU Public Licence.]
  57. */
  58. #ifndef HEADER_HMAC_H
  59. # define HEADER_HMAC_H
  60. # include <openssl/opensslconf.h>
  61. # ifdef OPENSSL_NO_HMAC
  62. # error HMAC is disabled.
  63. # endif
  64. # include <openssl/evp.h>
  65. # define HMAC_MAX_MD_CBLOCK 128/* largest known is SHA512 */
  66. #ifdef __cplusplus
  67. extern "C" {
  68. #endif
  69. typedef struct hmac_ctx_st {
  70. const EVP_MD *md;
  71. EVP_MD_CTX md_ctx;
  72. EVP_MD_CTX i_ctx;
  73. EVP_MD_CTX o_ctx;
  74. unsigned int key_length;
  75. unsigned char key[HMAC_MAX_MD_CBLOCK];
  76. } HMAC_CTX;
  77. # define HMAC_size(e) (EVP_MD_size((e)->md))
  78. void HMAC_CTX_init(HMAC_CTX *ctx);
  79. void HMAC_CTX_cleanup(HMAC_CTX *ctx);
  80. /* deprecated */
  81. # define HMAC_cleanup(ctx) HMAC_CTX_cleanup(ctx)
  82. /* deprecated */
  83. int HMAC_Init(HMAC_CTX *ctx, const void *key, int len, const EVP_MD *md);
  84. int HMAC_Init_ex(HMAC_CTX *ctx, const void *key, int len,
  85. const EVP_MD *md, ENGINE *impl);
  86. int HMAC_Update(HMAC_CTX *ctx, const unsigned char *data, size_t len);
  87. int HMAC_Final(HMAC_CTX *ctx, unsigned char *md, unsigned int *len);
  88. unsigned char *HMAC(const EVP_MD *evp_md, const void *key, int key_len,
  89. const unsigned char *d, size_t n, unsigned char *md,
  90. unsigned int *md_len);
  91. int HMAC_CTX_copy(HMAC_CTX *dctx, HMAC_CTX *sctx);
  92. void HMAC_CTX_set_flags(HMAC_CTX *ctx, unsigned long flags);
  93. #ifdef __cplusplus
  94. }
  95. #endif
  96. #endif