uint32_t rpgmaker_checksum(uint8_t *data, size_t len) { uint32_t checksum = len ^ 0xFFFFFFFF; for (size_t i = 0; i < len; i++) { checksum = (checksum >> 8) ^ xor_table[(checksum ^ data[i]) & 0xFF]; } return ~checksum; } (Note: xor_table is a static 256-byte lookup table extracted from the RPG_RT.exe binary.)
