Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Having particular address related cryptography
Reexamination Certificate
2007-08-21
2007-08-21
Zia, Syed A. (Department: 2131)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Having particular address related cryptography
C713S162000, C713S150000, C713S168000, C713S171000, C380S277000, C380S264000, C380S283000
Reexamination Certificate
active
09408420
ABSTRACT:
An approach for managing addition or deletion of nodes in a multicast or broadcast group, which avoids introducing a single point of failure at a group controller, certificate authority, or key distribution center, is disclosed. A central group controller utilizes a binary tree structure to generate and distribute session keys for the establishment of a secure multicast group among multiple user nodes. The central group controller is replicated in a plurality of other group controllers, interconnected in a network having a secure communication channel and connected to a load balancer. The secure communication channel is established using a public key exchange protocol. The load balancer distributes incoming join/leave requests to a master group controller. The master group controller processes the join or leave, generates a new group session key, and distributes the new group session key to all other group controller replicas. Each group controller is successively designated as master group controller in real time when a former master group controller crashes or relinquishes its master authority.
REFERENCES:
patent: 4200770 (1980-04-01), Hellman et al.
patent: 4531020 (1985-07-01), Wechselberger et al.
patent: 4578531 (1986-03-01), Everhart et al.
patent: 4776011 (1988-10-01), Busby
patent: 4881263 (1989-11-01), Herbison et al.
patent: 5309516 (1994-05-01), Takaragi et al.
patent: 5351295 (1994-09-01), Perlman et al.
patent: 5361256 (1994-11-01), Doeringer et al.
patent: 5588060 (1996-12-01), Aziz
patent: 5588061 (1996-12-01), Ganesan et al.
patent: 5600642 (1997-02-01), Pauwels et al.
patent: 5630184 (1997-05-01), Roper et al.
patent: 5633933 (1997-05-01), Aziz
patent: 5663896 (1997-09-01), Aucsmith
patent: 5724425 (1998-03-01), Chang et al.
patent: 5748736 (1998-05-01), Mittra
patent: 5761305 (1998-06-01), Vanstone et al.
patent: 5805578 (1998-09-01), Stirpe et al.
patent: 5832229 (1998-11-01), Tomoda et al.
patent: 5841864 (1998-11-01), Klayman et al.
patent: 5850451 (1998-12-01), Sudia
patent: 5889865 (1999-03-01), Vanstone et al.
patent: 5920630 (1999-07-01), Wertheimer et al.
patent: 5987131 (1999-11-01), Clapp
patent: 6009274 (1999-12-01), Fletcher et al.
patent: 6049878 (2000-04-01), Caronni et al.
patent: 6055575 (2000-04-01), Paulsen et al.
patent: 6088336 (2000-07-01), Tosey
patent: 6119228 (2000-09-01), Angelo et al.
patent: 6151395 (2000-11-01), Harkins
patent: 6216231 (2001-04-01), Stubblebine
patent: 6226383 (2001-05-01), Jablon
patent: 6240188 (2001-05-01), Dondeti et al.
patent: 6240513 (2001-05-01), Friedman et al.
patent: 6247014 (2001-06-01), Ladwig et al.
patent: 6256733 (2001-07-01), Thakkar et al.
patent: 6263435 (2001-07-01), Dondeti et al.
patent: 6272135 (2001-08-01), Nakatsugawa
patent: 6279112 (2001-08-01), O'Toole et al.
patent: 6295361 (2001-09-01), Kadansky et al.
patent: 6330671 (2001-12-01), Aziz
patent: 6332163 (2001-12-01), Bowman-Amuah
patent: 6363154 (2002-03-01), Peyravian et al.
patent: 6434612 (2002-08-01), Hughes et al.
patent: 6483921 (2002-11-01), Harkins
patent: 6507562 (2003-01-01), Kadansky et al.
patent: 6570847 (2003-05-01), Hosein
patent: 6584566 (2003-06-01), Hardjono
patent: 6633579 (2003-10-01), Tedijanto et al.
patent: 6636968 (2003-10-01), Rosner et al.
patent: 6643773 (2003-11-01), Hardjono
patent: 6684331 (2004-01-01), Srivastava
patent: 6745243 (2004-06-01), Squire et al.
patent: 2005/0129236 (2005-06-01), Sharma
patent: 2006/0168446 (2006-07-01), Ahonen et al.
patent: 0 952 718 (1999-10-01), None
patent: 0 994 600 (2000-04-01), None
Alfred J. Menezes, “Handbook of Applied Cryptography,” 1997, CRC Press LLC., pp. 519-520.
Bruce Schneier, “Applied Cryptography,” 1996, John Wiley & Sons, Inc., pp. 33-35 and 47-65.
Robert Orfali et al., “The Essential Distributed Objects Survival Guide,” 1996, pp. 448-449.
David Chappell, “Understanding Microsoft Windows 2000 Distributed Services,” 2000, pp. 319-324.
Robert Orfali et al., “Client/Server Survival Guide Third Edition,” 1999, p. 488.
Koblitz, Neal, A Course in Number Theory and Cryptography, 1994, Springer Verlag New York Inc. 2nd Edition, 8 pages.
Harry Newton, Newton's Telecom Dictionary, 1998, Telecom Books, 14thEdition, p. 228.
IEEE Transactions On Information Theory, vol. IT-22, No. 6 (Nov. 1976) entitled “New Directions in Cryptography” by Whitfield Diffie and Martin E. Hellman.
Proceedings of the IEEE, vol. 76, No. 5 (May 1988) entitled “The First Ten Years of Public-Key Cryptography” by Whitfield Diffie.
MIT/LCS/TM-537, Laboratory for Computer Science (Aug. 1995) entitled “Guaranteed Partial Key-Escrow”, Handout #13, by Silvio Micali.
Proceedings of the Fourth Annual Conference on Computer and Communications Security, ACM, 1997 (Nov. 1996) entitled “Verifiable Partial Key Escrow” by Mihir Bellare and Shafi Goldwasser.
Federal Information Processing Standards Publication 185 (Feb. 9, 1994) entitled “U.S. Department of Commernce/National Institute of Standards and Technology”, Escrowed Encryption Standard, Category: Telecommunications Security.
Cylink Corporation Resources entitled “Alternatives to RSA: Using Diffie-Hellman with DSS”.
Cisco Technology Inc.
Hickman Palermo & Truong & Becker LLP
Zia Syed A.
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