任何的mac算法都可以使用标准的hash功能，比如MD５或者sha－１，这种情况下，强度取决于hash功能，和最后的结果的比特串。密匙是关键。-HMAC is a message authentication code (MAC) and can be used to verify the integrity and authentication of a message. It involves hashing a message with a secret key. As with any

C# 最强密码处理类，MD5加密、SHA1 加密、SHA256 加密、HMAC 加密-MD5 encryption, SHA1 encryption, SHA256 encryption, HMAC encryption