Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Packet header designating cryptographically protected data
Reexamination Certificate
2005-10-28
2008-08-12
Smithers, Matthew B (Department: 2137)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Packet header designating cryptographically protected data
Reexamination Certificate
active
07412600
ABSTRACT:
Approaches are disclosed for switching transport protocol connection keys. A method of automatically changing a message authentication key at each of two endpoints of a connection in a telecommunications network comprises testing a sequence value received in each of a plurality of data segments on the connection; and selecting a next message authentication key, from among a plurality of stored message authentication keys, for use in authenticating subsequently received data segments, when the sequence value matches a specified characteristic.
REFERENCES:
patent: 6061799 (2000-05-01), Eldridge et al.
patent: 6502192 (2002-12-01), Nguyen
patent: 7100054 (2006-08-01), Wenisch et al.
patent: 7194761 (2007-03-01), Champagne
patent: 2004/0034773 (2004-02-01), Balabine et al.
patent: 2005/0132214 (2005-06-01), Naftali
patent: 2005/0160478 (2005-07-01), Ramaiah et al.
patent: 2007/0005973 (2007-01-01), Mynam et al.
patent: 2007/0005985 (2007-01-01), Eldar et al.
R. Bonica, et al., “Authentication for TCP-based Routing and Management Protocols”, draft-bonica-tcp-auth-00, Juniper Networks, TCPM Working Group Internet—Draft, Sep. 16, 2005.
R. Bonica, et al., “Authentication for TCP-based Routing and Management Protocols” draft-bonica-tcp-auth-01, Juniper Networks, TCPM Working Group Internet—Draft, Sep. 27, 2005.
R. Bonica, et al., “Authentication for TCP-based Routing and Management Protocols”, draft-bonica-tcp-auth-02, Juniper Networks, TCPM Working Group Internet—Draft, Oct. 5, 2005.
A. Ramaiah, et al., “Key Rollover Schemes for TCP Connections Employing a Shared Key Model”, Network Working Group Internet—Draft, Nov. 23, 2005.
R. Rivest, “The MD5 Message-Digest Algorithm”, Network Working Group Request for Comments: 1321, Apr. 1992.
Y. Rekhter, “A Border Gateway Protocol 4 (BGP-4)”, Network Working Group Request for Comments: 1771, Mar. 1995.
F. Baker, et al., “RIP-2 MD5 Authentication”, Network Working Group Request for Comments: 2082, Jan. 1997.
A. Heffernan, “Protection of BGP Sessions via the TCP MD5 Signature Option”, Network Working Group Request for Comments: 2385, Aug. 1998.
F. Baker, et al., “RSVP Cryptographic Authentication”, Network Working Group Request for Comments: 2747, Jan. 2000.
L. Andersson, et al., “LDP Specification”, Network Working Group Request for Comments: 3036, Jan. 2001.
International Searching Authority, “Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority, or the Declaration”, International application No. PCT/US06/40959, received Oct. 18, 2007, 11 pages.
Claims, International application No. PCT/US06/40959, 4 pages.
Bage Shrirang
Dalal Mitesh
Han Lin
Khare Amol
Ramaiah Anantha
Cisco Technology Inc.
Hickman Palermo & Truong & Becker LLP
Smithers Matthew B
LandOfFree
Approaches for automatically switching message... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Approaches for automatically switching message..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Approaches for automatically switching message... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4015872