对单播地址，多播地址，广播地址进行检查，其中对多播地址的检查用于哈希算法-The unicast address, the multicast address, a broadcast address to be checked, wherein the inspection of the multicast address is used for hashing algorithm

哈希算法FPGA实现代码，采用MD5算法，并给出了仿真波形。-MD5 hashing algorithm for FPGA implementation code

SHA1 消息摘要，一种哈希算法，非常好用(SHA message digest, a hash algorithrim, very useful)