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  1. private static readonly UInt32[] Block = { 0, 0, 0x00800110, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x50, 0 };
  2. // [10]=0x80 [9]=1, [8]=16
  3. public void ComputeByteHash(UInt32[] state,uint input)
  4. {
  5. UInt32 a = state[0] = 0x67452301;
  6. UInt32 b = state[1] = 0xEFCDAB89;
  7. UInt32 c = state[2] = 0x98BADCFE;
  8. UInt32 d = state[3] = 0x10325476;
  9. UInt32 x;
  10. Block[0] = 0x4542 | ((input << 16) & 0xFFFF0000);
  11. Block[1] = 0x00010000 | ((input >> 16) & 0xFFFF);
  12.  
  13. x = (a + (d ^ (b & (c ^ d))) + 0xD76AA478 + Block[0]); a = ((x << 7) | (x >> (32 - 7))) + b;
  14. x = (d + (c ^ (a & (b ^ c))) + 0xE8C7B756 + Block[1]); d = ((x << 12) | (x >> (32 - 12))) + a;
  15. x = (c + (b ^ (d & (a ^ b))) + 0x242070DB + Block[2]); c = ((x << 17) | (x >> (32 - 17))) + d;
  16. x = (b + (a ^ (c & (d ^ a))) + 0xC1BDCEEE + Block[3]); b = ((x << 22) | (x >> (32 - 22))) + c;
  17. x = (a + (d ^ (b & (c ^ d))) + 0xF57C0FAF + Block[4]); a = ((x << 7) | (x >> (32 - 7))) + b;
  18. x = (d + (c ^ (a & (b ^ c))) + 0x4787C62A + Block[5]); d = ((x << 12) | (x >> (32 - 12))) + a;
  19. x = (c + (b ^ (d & (a ^ b))) + 0xA8304613 + Block[6]); c = ((x << 17) | (x >> (32 - 17))) + d;
  20. x = (b + (a ^ (c & (d ^ a))) + 0xFD469501 + Block[7]); b = ((x << 22) | (x >> (32 - 22))) + c;
  21. x = (a + (d ^ (b & (c ^ d))) + 0x698098D8 + Block[8]); a = ((x << 7) | (x >> (32 - 7))) + b;
  22. x = (d + (c ^ (a & (b ^ c))) + 0x8B44F7AF + Block[9]); d = ((x << 12) | (x >> (32 - 12))) + a;
  23. x = (c + (b ^ (d & (a ^ b))) + 0xFFFF5BB1 + Block[10]); c = ((x << 17) | (x >> (32 - 17))) + d;
  24. x = (b + (a ^ (c & (d ^ a))) + 0x895CD7BE + Block[11]); b = ((x << 22) | (x >> (32 - 22))) + c;
  25. x = (a + (d ^ (b & (c ^ d))) + 0x6B901122 + Block[12]); a = ((x << 7) | (x >> (32 - 7))) + b;
  26. x = (d + (c ^ (a & (b ^ c))) + 0xFD987193 + Block[13]); d = ((x << 12) | (x >> (32 - 12))) + a;
  27. x = (c + (b ^ (d & (a ^ b))) + 0xA679438E + Block[14]); c = ((x << 17) | (x >> (32 - 17))) + d;
  28. x = (b + (a ^ (c & (d ^ a))) + 0x49B40821 + Block[15]); b = ((x << 22) | (x >> (32 - 22))) + c;
  29. //Раунд 1
  30. x = (a + (c ^ (d & (b ^ c))) + 0xF61E2562 + Block[1]); a = ((x << 5) | (x >> (32 - 5))) + b;
  31. x = (d + (b ^ (c & (a ^ b))) + 0xC040B340 + Block[6]); d = ((x << 9) | (x >> (32 - 9))) + a;
  32. x = (c + (a ^ (b & (d ^ a))) + 0x265E5A51 + Block[11]); c = ((x << 14) | (x >> (32 - 14))) + d;
  33. x = (b + (d ^ (a & (c ^ d))) + 0xE9B6C7AA + Block[0]); b = ((x << 20) | (x >> (32 - 20))) + c;
  34. x = (a + (c ^ (d & (b ^ c))) + 0xD62F105D + Block[5]); a = ((x << 5) | (x >> (32 - 5))) + b;
  35. x = (d + (b ^ (c & (a ^ b))) + 0x02441453 + Block[10]); d = ((x << 9) | (x >> (32 - 9))) + a;
  36. x = (c + (a ^ (b & (d ^ a))) + 0xD8A1E681 + Block[15]); c = ((x << 14) | (x >> (32 - 14))) + d;
  37. x = (b + (d ^ (a & (c ^ d))) + 0xE7D3FBC8 + Block[4]); b = ((x << 20) | (x >> (32 - 20))) + c;
  38. x = (a + (c ^ (d & (b ^ c))) + 0x21E1CDE6 + Block[9]); a = ((x << 5) | (x >> (32 - 5))) + b;
  39. x = (d + (b ^ (c & (a ^ b))) + 0xC33707D6 + Block[14]); d = ((x << 9) | (x >> (32 - 9))) + a;
  40. x = (c + (a ^ (b & (d ^ a))) + 0xF4D50D87 + Block[3]); c = ((x << 14) | (x >> (32 - 14))) + d;
  41. x = (b + (d ^ (a & (c ^ d))) + 0x455A14ED + Block[8]); b = ((x << 20) | (x >> (32 - 20))) + c;
  42. x = (a + (c ^ (d & (b ^ c))) + 0xA9E3E905 + Block[13]); a = ((x << 5) | (x >> (32 - 5))) + b;
  43. x = (d + (b ^ (c & (a ^ b))) + 0xFCEFA3F8 + Block[2]); d = ((x << 9) | (x >> (32 - 9))) + a;
  44. x = (c + (a ^ (b & (d ^ a))) + 0x676F02D9 + Block[7]); c = ((x << 14) | (x >> (32 - 14))) + d;
  45. x = (b + (d ^ (a & (c ^ d))) + 0x8D2A4C8A + Block[12]); b = ((x << 20) | (x >> (32 - 20))) + c;
  46. //Раунд 2
  47. x = (a + (b ^ c ^ d) + 0xFFFA3942 + Block[5]); a = ((x << 4) | (x >> (32 - 4))) + b;
  48. x = (d + (a ^ b ^ c) + 0x8771F681 + Block[8]); d = ((x << 11) | (x >> (32 - 11))) + a;
  49. x = (c + (d ^ a ^ b) + 0x6D9D6122 + Block[11]); c = ((x << 16) | (x >> (32 - 16))) + d;
  50. x = (b + (c ^ d ^ a) + 0xFDE5380C + Block[14]); b = ((x << 23) | (x >> (32 - 23))) + c;
  51. x = (a + (b ^ c ^ d) + 0xA4BEEA44 + Block[1]); a = ((x << 4) | (x >> (32 - 4))) + b;
  52. x = (d + (a ^ b ^ c) + 0x4BDECFA9 + Block[4]); d = ((x << 11) | (x >> (32 - 11))) + a;
  53. x = (c + (d ^ a ^ b) + 0xF6BB4B60 + Block[7]); c = ((x << 16) | (x >> (32 - 16))) + d;
  54. x = (b + (c ^ d ^ a) + 0xBEBFBC70 + Block[10]); b = ((x << 23) | (x >> (32 - 23))) + c;
  55. x = (a + (b ^ c ^ d) + 0x289B7EC6 + Block[13]); a = ((x << 4) | (x >> (32 - 4))) + b;
  56. x = (d + (a ^ b ^ c) + 0xEAA127FA + Block[0]); d = ((x << 11) | (x >> (32 - 11))) + a;
  57. x = (c + (d ^ a ^ b) + 0xD4EF3085 + Block[3]); c = ((x << 16) | (x >> (32 - 16))) + d;
  58. x = (b + (c ^ d ^ a) + 0x04881D05 + Block[6]); b = ((x << 23) | (x >> (32 - 23))) + c;
  59. x = (a + (b ^ c ^ d) + 0xD9D4D039 + Block[9]); a = ((x << 4) | (x >> (32 - 4))) + b;
  60. x = (d + (a ^ b ^ c) + 0xE6DB99E5 + Block[12]); d = ((x << 11) | (x >> (32 - 11))) + a;
  61. x = (c + (d ^ a ^ b) + 0x1FA27CF8 + Block[15]); c = ((x << 16) | (x >> (32 - 16))) + d;
  62. x = (b + (c ^ d ^ a) + 0xC4AC5665 + Block[2]); b = ((x << 23) | (x >> (32 - 23))) + c;
  63. //Раунд 3
  64. x = (a + (c ^ (b | ~d)) + 0xF4292244 + Block[0]); a = ((x << 6) | (x >> (32 - 6))) + b;
  65. x = (d + (b ^ (a | ~c)) + 0x432AFF97 + Block[7]); d = ((x << 10) | (x >> (32 - 10))) + a;
  66. x = (c + (a ^ (d | ~b)) + 0xAB9423A7 + Block[14]); c = ((x << 15) | (x >> (32 - 15))) + d;
  67. x = (b + (d ^ (c | ~a)) + 0xFC93A039 + Block[5]); b = ((x << 21) | (x >> (32 - 21))) + c;
  68. x = (a + (c ^ (b | ~d)) + 0x655B59C3 + Block[12]); a = ((x << 6) | (x >> (32 - 6))) + b;
  69. x = (d + (b ^ (a | ~c)) + 0x8F0CCC92 + Block[3]); d = ((x << 10) | (x >> (32 - 10))) + a;
  70. x = (c + (a ^ (d | ~b)) + 0xFFEFF47D + Block[10]); c = ((x << 15) | (x >> (32 - 15))) + d;
  71. x = (b + (d ^ (c | ~a)) + 0x85845DD1 + Block[1]); b = ((x << 21) | (x >> (32 - 21))) + c;
  72. x = (a + (c ^ (b | ~d)) + 0x6FA87E4F + Block[8]); a = ((x << 6) | (x >> (32 - 6))) + b;
  73. x = (d + (b ^ (a | ~c)) + 0xFE2CE6E0 + Block[15]); d = ((x << 10) | (x >> (32 - 10))) + a;
  74. x = (c + (a ^ (d | ~b)) + 0xA3014314 + Block[6]); c = ((x << 15) | (x >> (32 - 15))) + d;
  75. x = (b + (d ^ (c | ~a)) + 0x4E0811A1 + Block[13]); b = ((x << 21) | (x >> (32 - 21))) + c;
  76. x = (a + (c ^ (b | ~d)) + 0xF7537E82 + Block[4]); a = ((x << 6) | (x >> (32 - 6))) + b;
  77. x = (d + (b ^ (a | ~c)) + 0xBD3AF235 + Block[11]); d = ((x << 10) | (x >> (32 - 10))) + a;
  78. x = (c + (a ^ (d | ~b)) + 0x2AD7D2BB + Block[2]); c = ((x << 15) | (x >> (32 - 15))) + d;
  79. x = (b + (d ^ (c | ~a)) + 0xEB86D391 + Block[9]); b = ((x << 21) | (x >> (32 - 21))) + c;
  80.  
  81. state[0] = state[0] + a;
  82. state[1] = state[1] + b;
  83. state[2] = state[2] + c;
  84. state[3] = state[3] + d;
  85.  
  86. }
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