Robuta

https://ctf.org.cn/2019/03/15/%E4%B9%8B%E5%89%8D%E7%9A%84/CRC%E6%8E%A8%E5%AF%BC%E4%BB%A5%E5%8F%8A%E4%B8%80%E9%81%93CRC32%E7%88%86%E7%A0%B4%E4%BE%8B%E9%A2%98/ CRC推导以及一道CRC32爆破例题