Systems and methods for rejoining a second group of nodes...

Details Systems and methods for rejoining a second group of nodes... Systems and methods for rejoining a second group of nodes...

2007-01-18

2010-11-23

Simitoski, Michael J (Department: 2439)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C713S163000, C380S273000, C380S278000, C380S281000

Reexamination Certificate

active

07840810

ABSTRACT:
A method for rejoining a second group of nodes with a first group of nodes is described. A first state of a first group key associated with a first group of nodes is received. The first state of the first group key is multicast to a second group of nodes. The first group key is rekeyed to a second group key associated with the second group of nodes. A second state of the second group key is multicast to the second group of nodes. A third state of a third group key associated with the first group of nodes is received. A rekey command is multicast to the second group of nodes if the third state is different from the second state. The second group key is rekeyed to the third group key.

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