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sha2.h 3.3 KB

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  1. /* contrib/pgcrypto/sha2.h */
  2. /* $OpenBSD: sha2.h,v 1.2 2004/04/28 23:11:57 millert Exp $ */
  3. /*
  4. * FILE: sha2.h
  5. * AUTHOR: Aaron D. Gifford <me@aarongifford.com>
  6. *
  7. * Copyright (c) 2000-2001, Aaron D. Gifford
  8. * All rights reserved.
  9. *
  10. * Redistribution and use in source and binary forms, with or without
  11. * modification, are permitted provided that the following conditions
  12. * are met:
  13. * 1. Redistributions of source code must retain the above copyright
  14. * notice, this list of conditions and the following disclaimer.
  15. * 2. Redistributions in binary form must reproduce the above copyright
  16. * notice, this list of conditions and the following disclaimer in the
  17. * documentation and/or other materials provided with the distribution.
  18. * 3. Neither the name of the copyright holder nor the names of contributors
  19. * may be used to endorse or promote products derived from this software
  20. * without specific prior written permission.
  21. *
  22. * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTOR(S) ``AS IS'' AND
  23. * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25. * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTOR(S) BE LIABLE
  26. * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27. * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28. * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31. * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32. * SUCH DAMAGE.
  33. *
  34. * $From: sha2.h,v 1.1 2001/11/08 00:02:01 adg Exp adg $
  35. */
  36. /*** SHA-224/256/384/512 Various Length Definitions ***********************/
  37. enum{
  38. SHA224BlockLength = 64,
  39. SHA224DigestLength = 28,
  40. SHA224_digest_string_length = (SHA224DigestLength * 2 + 1),
  41. SHA256BlockLength = 64,
  42. SHA256DigestLength = 32,
  43. SHA256DigestStringLength = (SHA256DigestLength * 2 + 1),
  44. SHA384BlockLength = 128,
  45. SHA384DigestLength = 48,
  46. SHA384_digest_string_length = (SHA384DigestLength * 2 + 1),
  47. SHA512_block_length = 128,
  48. SHA512DigestLength = 64,
  49. SHA512DigestStringLength = (SHA512DigestLength * 2 + 1)
  50. };
  51. /*** SHA-256/384/512 Context Structures *******************************/
  52. typedef struct SHA256Ctx SHA256Ctx;
  53. typedef struct SHA512Ctx SHA512Ctx;
  54. typedef SHA256Ctx SHA224Ctx;
  55. typedef SHA512Ctx SHA384Ctx;
  56. struct SHA256Ctx
  57. {
  58. uint32_t state[8];
  59. uint64_t bitcount;
  60. uint8_t buffer[SHA256BlockLength];
  61. };
  62. struct SHA512Ctx
  63. {
  64. uint64_t state[8];
  65. uint64_t bitcount[2];
  66. uint8_t buffer[SHA512_block_length];
  67. };
  68. void SHA224_Init(SHA224Ctx *);
  69. void SHA224_Update(SHA224Ctx *, const uint8_t *, size_t);
  70. void SHA224_Final(uint8_t[SHA224DigestLength], SHA224Ctx *);
  71. void SHA256_Init(SHA256Ctx *);
  72. void SHA256_Update(SHA256Ctx *, const uint8_t *, size_t);
  73. void SHA256_Final(uint8_t[SHA256DigestLength], SHA256Ctx *);
  74. void SHA384_Init(SHA384Ctx *);
  75. void SHA384_Update(SHA384Ctx *, const uint8_t *, size_t);
  76. void SHA384_Final(uint8_t[SHA384DigestLength], SHA384Ctx *);
  77. void SHA512_Init(SHA512Ctx *);
  78. void SHA512_Update(SHA512Ctx *, const uint8_t *, size_t);
  79. void SHA512_Final(uint8_t[SHA512DigestLength], SHA512Ctx *);