Open Shortest Path First (OSPF) Signature Algorithms Last Updated 2009-07-13 This registry is also available in plain text. Registry included below * Signature Algorithms Signature Algorithms Registration Procedures IETF Review Reference [RFC2154] Note The Signature Algorithm Number is an 8-bit number used to identify the algorithm used in certain security procedures Number Description Reference 0 Reserved [RFC2154] 1 MD5 [RFC2154] 2-252 Unassigned 253 Reserved [RFC2154] 254 Reserved for private algorithm [RFC2154] 255 Reserved [RFC2154]