Cryptography – Key management
Reexamination Certificate
2011-07-12
2011-07-12
Jung, David Y (Department: 2431)
Cryptography
Key management
C380S278000, C380S279000, C713S162000
Reexamination Certificate
active
07978858
ABSTRACT:
A network communication system has terminal devices belonging to a group, the terminal devices generating, if there is a leaving terminal device leaving from the group, an updated group encryption key corresponding to a new group encryption key, from a deletion key corresponding to the leaving terminal device and a group encryption key, and, after the leaving terminal device leaves the group, communicating by using the updated group encryption key; and a group management server generating the updated group encryption key corresponding to the new group encryption key from the deletion key corresponding to the leaving terminal device and the group encryption key, and, after the leaving terminal device leaves the group, communicating by using the updated group encryption key.
REFERENCES:
patent: 6832314 (2004-12-01), Irvin
patent: 7599496 (2009-10-01), Hengeveld et al.
patent: 7860255 (2010-12-01), Nonaka et al.
patent: 2005-159780 (2005-06-01), None
A lower bound for multicast key distribution; Snoeyink, J.; Suri, S.; Varghese, G.; INFOCOM 2001. Twentieth Annual Joint Conference of the IEEE Computer and Communications Societies. Proceedings. IEEE vol. 1; Publication Year: 2001 , pp. 422-431 vol. 1.
SeGCom: A secure group communication mechanism in cluster-tree wireless sensor networks Gaddour, O.; Koubaa, A.; Abid, M.; Communications and Networking, 2009. ComNet 2009. First International Conference on Publication Year: 2009 , pp. 1-7.
Scalable Secure Bidirectional Group Communication Yitao Duan; Canny, J.; INFOCOM 2007. 26th IEEE International Conference on Computer Communications. IEEE Publication Year: 2007 , pp. 875-883.
Ikeda Nobuyuki
Ogishima Shinji
Osajima Ikuko
Suzuki Akira
Jung David Y
Kabushiki Kaisha Toshiba
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
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