blake2s.c 2.3 KB

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  1. /* ===================================================================
  2. *
  3. * Copyright (c) 2014, Legrandin <helderijs@gmail.com>
  4. * All rights reserved.
  5. *
  6. * Redistribution and use in source and binary forms, with or without
  7. * modification, are permitted provided that the following conditions
  8. * are met:
  9. *
  10. * 1. Redistributions of source code must retain the above copyright
  11. * notice, this list of conditions and the following disclaimer.
  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. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  18. * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  19. * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  20. * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  21. * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  22. * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  23. * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  24. * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  25. * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  27. * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28. * POSSIBILITY OF SUCH DAMAGE.
  29. * ===================================================================
  30. */
  31. #include "pycrypto_common.h"
  32. #define F_ROUNDS 10
  33. #define MAX_DIGEST_BYTES 32
  34. #define MAX_KEY_BYTES 32
  35. #define BLAKE2_WORD_SIZE 32
  36. #define G_R1 16
  37. #define G_R2 12
  38. #define G_R3 8
  39. #define G_R4 7
  40. typedef uint32_t blake2_word;
  41. static const uint32_t iv[8] = {
  42. 0x6A09E667,
  43. 0xBB67AE85,
  44. 0x3C6EF372,
  45. 0xA54FF53A,
  46. 0x510E527F,
  47. 0x9B05688C,
  48. 0x1F83D9AB,
  49. 0x5BE0CD19
  50. };
  51. static void byteswap(uint32_t *v)
  52. {
  53. union {
  54. uint32_t w;
  55. uint8_t b[4];
  56. } x, y;
  57. x.w = *v;
  58. y.b[0] = x.b[3];
  59. y.b[1] = x.b[2];
  60. y.b[2] = x.b[1];
  61. y.b[3] = x.b[0];
  62. *v = y.w;
  63. }
  64. #define blake2_init blake2s_init
  65. #define blake2_copy blake2s_copy
  66. #define blake2_destroy blake2s_destroy
  67. #define blake2_digest blake2s_digest
  68. #define blake2_update blake2s_update
  69. FAKE_INIT(BLAKE2s)
  70. #include "blake2.c"