| 86,7 → 86,8 |
|---|
| |
| uint32_t crc32b(char *data, int nLength) { |
| int i, j, k; |
| unsigned int byte, crc, mask; |
| uint32_t crc, mask; |
| char byte; |
| |
| i = 0; |
| crc = 0xFFFFFFFF; |
| 95,7 → 96,7 |
|---|
| byte = data[k]; |
| crc = crc ^ byte; |
| for (j = 7; j >= 0; j--) { |
| mask = -(crc & 1); |
| mask = (-1) * (crc & 1); |
| crc = (crc >> 1) ^ (0xEDB88320 & mask); |
| } |
| i++; |
| 119,7 → 120,8 |
|---|
| obfusc_version = 4; |
| #else |
| // In obfuscation version 5, the seed is also the checksum. It will be verified at deobfusc()! |
| initial_seed = crc32b((char*)&pparm,sizeof(PARM_T)); |
| pparm->unknown2 = 0; // make sure crc32b matches always |
| initial_seed = crc32b((char*)pparm,sizeof(PARM_T)); |
| obfusc_version = 5; |
| #endif |
| |
| 239,7 → 241,8 |
|---|
| xorshift(&p, &seed, size - seed_position - 4); |
| |
| if (obfusc_version == 5) { |
| if (crc32b((char*)&pparm,sizeof(PARM_T)) != initial_seed) { |
| pparm->unknown2 = 0; // make sure crc32b matches always |
| if (crc32b((char*)pparm,sizeof(PARM_T)) != initial_seed) { |
| // Integrity check failed! |
| memset(pparm, 0, sizeof(PARM_T)); // invalidate everything |
| } |