Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Having particular address related cryptography
Reexamination Certificate
2006-03-14
2006-03-14
Morse, Gregory (Department: 2134)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Having particular address related cryptography
C713S169000, C713S171000
Reexamination Certificate
active
07013389
ABSTRACT:
An approach for establishing secure multicast communication among multiple event service nodes is disclosed. The event service nodes, which can be distributed throughout an enterprise domain, are organized in a logical tree that mimics the logical tree arrangement of domains in a directory server system. The attributes of the event service nodes include the group session key and the private keys of the event service nodes that are members of the multicast or broadcast groups. The private keys provide unique identification values for the event service nodes, thereby facilitating distribution of such keys. Because keys as well as key version information are housed in the directory, multicast security can readily be achieved over any number of network domains across the entire enterprise. Key information is stored in, and the logical tree is supported by, a directory service. Replication of the directory accomplishes distribution of keys. Event service nodes may obtain current key information from a local copy of the replicated directory.
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Bell Raymond
Golla Ramprasad
Srivastava Sunil K.
Trostle Jonathan
Brown Christopher J.
Cisco Technology Inc.
Hickman Palermo & Truong & Becker LLP
Morse Gregory
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