Value,Description,Recommended,Reference
0,none,N,[RFC5246]
1,md5,N,[RFC5246]
2,sha1,N,[RFC5246]
3,sha224,Y,[RFC5246]
4,sha256,Y,[RFC5246]
5,sha384,Y,[RFC5246]
6,sha512,Y,[RFC5246]
7,Reserved,,[RFC8447]
8,Intrinsic,N,[RFC8422]
9-223,Unassigned,,
224-255,Reserved for Private Use,,[RFC5246]