当压缩包中看到文件大小很小，如4，代表有4个字符（例如：qbcd），能够通过CRC碰撞，获取到文件中的字符串内容
python2脚本：
#!/usr/bin/env python# -*- coding:utf-8 -*-import datetimeimport binascii def crack(crc_in): crcs = set([crc_in]) r = 'abcdefghijklmnopqrstuvwxyz_' #压缩字符串 for a in r: for b in r: for c in r: for d in r: txt = a+b+c+d crc = binascii.crc32(txt) if (crc & 0xFFFFFFFF) in crcs: return txtif __name__ == "__main__": s=[0x6083A1C8, 0xCE70D424,0xC3F17511,0x526FD582,0x30E25038,0xAA3E6AEA] password='' for x in s: passw = crack(x) password+=str(passw) print password