Internet Assigned Numbers Authority SIG (0) Algorithm Numbers Last Updated 2003-11-03 Available Formats [IMG] XML [IMG] HTML [IMG] Plain text Registry included below * SIG (0) Algorithm Numbers SIG (0) Algorithm Numbers Registration Procedure(s) Standards Action Reference [RFC3755] Note DNS KEY and SIG RRs [RFC2535] use an 8-bit number used to identify the security algorithm being used listed below. Available Formats [IMG] CSV Number Description References Note 0 Reserved 1 RSA/MD5 [RFC2537][RFC1321] deprecated, see 5 2 Diffie-Hellman [RFC2539] [RFC2536][Federal Information Processing Standards Publication (FIPS PUB) 186, 3 DSA/SHA1 Digital Signature Standard, 18 May 1994.][Federal Information Processing Standards Publication (FIPS PUB) 180-1, Secure Hash Standard, 17 April 1995. (Supersedes FIPS PUB 180 dated 11 May 1993.)] 4 Reserved for Elliptic Curve Crypto 5 RSA/SHA-1 [RFC3110] 6-251 Unassigned 252 Reserved for indirect keys [RFC2535] 253 Private algorithms - domain name [RFC2535] 254 Private algorithms - OID [RFC2535] 255 Reserved Licensing Terms