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/gecko_api/include/hasht.h

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C Header | 102 lines | 39 code | 9 blank | 54 comment | 0 complexity | d511ae36b207a137cb6e64a85639ec55 MD5 | raw file
  1. /* ***** BEGIN LICENSE BLOCK *****
  2. * Version: MPL 1.1/GPL 2.0/LGPL 2.1
  3. *
  4. * The contents of this file are subject to the Mozilla Public License Version
  5. * 1.1 (the "License"); you may not use this file except in compliance with
  6. * the License. You may obtain a copy of the License at
  7. * http://www.mozilla.org/MPL/
  8. *
  9. * Software distributed under the License is distributed on an "AS IS" basis,
  10. * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  11. * for the specific language governing rights and limitations under the
  12. * License.
  13. *
  14. * The Original Code is the Netscape security libraries.
  15. *
  16. * The Initial Developer of the Original Code is
  17. * Netscape Communications Corporation.
  18. * Portions created by the Initial Developer are Copyright (C) 1994-2000
  19. * the Initial Developer. All Rights Reserved.
  20. *
  21. * Contributor(s):
  22. *
  23. * Alternatively, the contents of this file may be used under the terms of
  24. * either the GNU General Public License Version 2 or later (the "GPL"), or
  25. * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  26. * in which case the provisions of the GPL or the LGPL are applicable instead
  27. * of those above. If you wish to allow use of your version of this file only
  28. * under the terms of either the GPL or the LGPL, and not to allow others to
  29. * use your version of this file under the terms of the MPL, indicate your
  30. * decision by deleting the provisions above and replace them with the notice
  31. * and other provisions required by the GPL or the LGPL. If you do not delete
  32. * the provisions above, a recipient may use your version of this file under
  33. * the terms of any one of the MPL, the GPL or the LGPL.
  34. *
  35. * ***** END LICENSE BLOCK ***** */
  36. /* $Id: hasht.h,v 1.7 2005/11/07 18:44:20 wtchang%redhat.com Exp $ */
  37. #ifndef _HASHT_H_
  38. #define _HASHT_H_
  39. /* Opaque objects */
  40. typedef struct SECHashObjectStr SECHashObject;
  41. typedef struct HASHContextStr HASHContext;
  42. /*
  43. * The hash functions the security library supports
  44. * NOTE the order must match the definition of SECHashObjects[]!
  45. */
  46. typedef enum {
  47. HASH_AlgNULL = 0,
  48. HASH_AlgMD2 = 1,
  49. HASH_AlgMD5 = 2,
  50. HASH_AlgSHA1 = 3,
  51. HASH_AlgSHA256 = 4,
  52. HASH_AlgSHA384 = 5,
  53. HASH_AlgSHA512 = 6,
  54. HASH_AlgTOTAL
  55. } HASH_HashType;
  56. /*
  57. * Number of bytes each hash algorithm produces
  58. */
  59. #define MD2_LENGTH 16
  60. #define MD5_LENGTH 16
  61. #define SHA1_LENGTH 20
  62. #define SHA256_LENGTH 32
  63. #define SHA384_LENGTH 48
  64. #define SHA512_LENGTH 64
  65. #define HASH_LENGTH_MAX SHA512_LENGTH
  66. /*
  67. * Structure to hold hash computation info and routines
  68. */
  69. struct SECHashObjectStr {
  70. unsigned int length; /* hash output length (in bytes) */
  71. void * (*create)(void);
  72. void * (*clone)(void *);
  73. void (*destroy)(void *, PRBool);
  74. void (*begin)(void *);
  75. void (*update)(void *, const unsigned char *, unsigned int);
  76. void (*end)(void *, unsigned char *, unsigned int *, unsigned int);
  77. unsigned int blocklength; /* hash input block size (in bytes) */
  78. HASH_HashType type;
  79. };
  80. struct HASHContextStr {
  81. const struct SECHashObjectStr *hashobj;
  82. void *hash_context;
  83. };
  84. /* This symbol is NOT exported from the NSS DLL. Code that needs a
  85. * pointer to one of the SECHashObjects should call HASH_GetHashObject()
  86. * instead. See "sechash.h".
  87. */
  88. extern const SECHashObject SECHashObjects[];
  89. /* Only those functions below the PKCS #11 line should use SECRawHashObjects.
  90. * This symbol is not exported from the NSS DLL.
  91. */
  92. extern const SECHashObject SECRawHashObjects[];
  93. #endif /* _HASHT_H_ */