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  1.  
  2. #include <stdio.h>
  3. #include <iostream>
  4.  
  5. using namespace std;
  6.  
  7. char plain[132];
  8. int coded[] = {
  9.     0xcea0e991,
  10.     0x592c2490,
  11.     0x76fec1eb,
  12.         0
  13. };
  14. //{ 0x28a2e840,
  15. //  0x00ab0649,
  16. //  0x96d1e05b,
  17. //  0x6e17bae5,
  18. //  0x82fa648d,
  19. //  0xa0e1c0c3,
  20. //  0xa4b6735d,
  21. //  0xe759254f,
  22. //  0xef993fbc,
  23. //  0x46f8e1b0,
  24. //  0x750e6b70,
  25. //  0x83f1d488,
  26. //  0x473314cb,
  27. //  0x910b13d5,
  28. //  0x91e26003,
  29. //  0x05addcfb,
  30. //  0x8a52c750,
  31. //  0xec072a87,
  32. //  0x9b8298ee,
  33. //  0xbb325200,
  34. //  0x8923dace,
  35. //  0x87055ba1,
  36. //  0x62df6fb3,
  37. //  0x476dcca4,
  38. //  0x329e8cf4,
  39. //  0x151e4be7,
  40. //  0xdd317982,
  41. //  0xca945f4b,
  42. //  0x5e7c405f,
  43. //  0x2e2df171,
  44. //  0x97a93395,
  45. //  0x2af15979,
  46. //  0x7dbf61b1,
  47. //  0x5cf2f46c,
  48. //  0x355b1989,
  49. //  0xb0810ac8,
  50. //  0x7f99986e,
  51. //  0xb721b6f2,
  52. //  0x3e6592f0,
  53. //  0xb7c7f2e8,
  54. //  0x991780ac,
  55. //  0xb4053909,
  56. //  0x5757afbe,
  57. //  0xadd842bd,
  58. //  0x25fbdf48,
  59. //  0x05254034,
  60. //  0x3c49f606,
  61. //  0x69ab9b63,
  62. //  0x5a6f8f6b,
  63. //  0x0573d564,
  64. //  0x8e7ec9b0,
  65. //  0xb02e9235,
  66. //  0x09cfbfaa,
  67. //  0x6cff3594,
  68. //  0xf3676ced,
  69. //  0xc4d898ef,
  70. //  0xad7cb3c1,
  71. //  0xa0c38286,
  72. //  0x68c04bc5,
  73. //  0xcb247220,
  74. //  0x898644a5,
  75. //  0x99967ca2,
  76. //  0x621c3154,
  77. //  0x57341cb9,
  78. //  0x2fbc9787,
  79. //  0x5a90041b,
  80. //  0xa04ba652,
  81. //  0x4ef463d6,
  82. //  0x90444fa0,
  83. //  0x77bf078a,
  84. //  0xeff192c7,
  85. //  0xdca4b2a3,
  86. //  0xa4e8418b,
  87. //  0x7c2f707e,
  88. //  0xc9eacc29,
  89. //  0xce2a55ad,
  90. //  0x813b5ede,
  91. //  0xeb066a95,
  92. //  0x1425011b,
  93. //  0xa53ef6f6,
  94. //  0x54facdc1,
  95. //  0xb558a5de,
  96. //  0x9797ff17,
  97. //  0x64cb4d0b,
  98. //  0x7d727adc,
  99. //  0x40fe648a,
  100. //      0       };
  101.  
  102. int CountZero(unsigned int seed_addr);
  103. int codgen(int* seed_addr);
  104. int decode(int* wordarr, char* bytearr, int* seed_addr);
  105.  
  106. int main() {
  107.  
  108.     int seed = 0x5374decc;
  109.     codgen(&seed);
  110.    
  111.     /*unsigned int seed = 0x50d084ca;
  112.     decode(coded, plain, &seed);
  113.     printf(plain);*/
  114.  
  115.     return 0;
  116. }
  117.  
  118. int decode(int* wordarr, char* bytearr, int* seed_addr) {
  119.     unsigned int m, r, x, y;
  120.     x = ~(codgen(seed_addr));
  121.     if (*wordarr == 0) {
  122.         bytearr = 0;
  123.         r = x;
  124.     }
  125.     else {
  126.         wordarr++;
  127.         bytearr++;
  128.         y = decode(wordarr, bytearr, seed_addr);
  129.         m = (x - y) + *wordarr;
  130.         m = (m << 10) >> 24;
  131.         cout << m << endl;
  132.         *bytearr = m + '0';
  133.         r = (~(codgen(seed_addr))) + 1;
  134.         r = x + y + m + r + 5;
  135.     }
  136.     return r;
  137. }
  138.  
  139. int codgen(int* seed_addr) {
  140.     unsigned int tempSeed = *seed_addr;
  141.     int n;
  142.     unsigned int x, y;
  143.  
  144.     n = CountZero(tempSeed);
  145.     x = tempSeed * 4;
  146.     y = tempSeed >> 5;
  147.     tempSeed = (x ^ y ^ n);
  148.     *seed_addr = tempSeed;
  149.     cout << tempSeed << endl;
  150.     return (tempSeed ^ 0x5b84d0ff);
  151. }
  152.  
  153.  
  154. int CountZero(unsigned int seed_addr) {
  155.     int i = 0;
  156.     int controll = 0;
  157.  
  158.     while (controll < 32) {
  159.         if (!(seed_addr % 2 == 1)) {
  160.             i++;
  161.         }
  162.         seed_addr = seed_addr / 2;
  163.         controll++;
  164.     }
  165.     cout << "Zeros is : " << i << endl;
  166.     return i;
  167. }
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