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[旧帖] 请问有见过使用这种字典的加密算法吗,是什么算法? 0.00雪花
发表于: 2016-3-10 10:31 2362

[旧帖] 请问有见过使用这种字典的加密算法吗,是什么算法? 0.00雪花

2016-3-10 10:31
2362
.rdata:101BE6F0 ; char asc_101BE6F0[]
.rdata:101BE6F0 asc_101BE6F0    db 0,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,7,7,7
.rdata:101BE6F0                                         ; DATA XREF: sub_1009B2A0+17r
.rdata:101BE6F0                                         ; sub_1009B2A0+28r ...
.rdata:101BE6F0                 db 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,8,8,8,8,8,8
.rdata:101BE6F0                 db 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8
.rdata:101BE6F0                 db 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,2,0

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这是使用字典的代码。
int __cdecl sub_1009B2A0(unsigned int a1)
{
  int result; // eax@3

  if ( a1 & 0xFFFF0000 )
  {
    if ( a1 & 0xFF000000 )
      result = asc_101BE6F0[a1 >> 24] + 24;
    else
      result = asc_101BE6F0[a1 >> 16] + 16;
  }
  else if ( BYTE1(a1) )
  {
    result = asc_101BE6F0[a1 >> 8] + 8;
  }
  else
  {
    result = asc_101BE6F0[a1];
  }
  return result;
}
2016-3-10 10:36
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