Value,Hash Algorithm,Reference
0,Reserved,
1,MD5,[RFC1321]
2,SHA,"[NIST, FIPS PUB 180-1: Secure Hash Standard,
April 1995.]"
3,Tiger,"[Anderson, R., and Biham, E., ""Fast Software Encryption"",
Springer LNCS v. 1039, 1996.]"
4,SHA2-256,[RFC4868]
5,SHA2-384,[RFC4868]
6,SHA2-512,[RFC4868]
7-65000,Unassigned,
65001-65535,Reserved for private use,