Keyed authentication rollover for routers

Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique

Reexamination Certificate

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Details

C713S153000, C713S168000

Reexamination Certificate

active

09734834

ABSTRACT:
Transmitting routing information includes sending first and second messages from a router. The first message includes a digest of the routing information using a first authentication key and a first sequence identifier. The second message, which is sent after the first message, includes a digest of the routing information using a second authentication key and a second sequence identifier that is earlier in a sequence than the first sequence identifier.

REFERENCES:
patent: 6301662 (2001-10-01), Hardjono
patent: 6363149 (2002-03-01), Candelore
patent: 6606706 (2003-08-01), Li
patent: 6611812 (2003-08-01), Hurtado et al.
OSPF Version 2, Network Workign Group Request for Comments 2328 Apr. 1998, (244 pages).
R. Rivest, “The MD4 Message-Digest Algorithm”, MIT Laboratory for Computer Science and RSA Data Security, Inc., Apr. 1992.
R. Rivest, “The MD5 Message-Digest Algorithm”, MIT Laboratory for Computer Science and RSA Data Security, Inc., Apr. 1992.
F. Baker et al., “RIP-2 MD5 Authentication”, Cisco Systems, Jan. 1997.
G. Malkin, “RIP Version 2”, Bay Networks, Nov. 1998.

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