The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 19, 2007
Filed:
Aug. 27, 2002
Mark Baugher, Portland, OR (US);
David Mcgrew, Poolesville, MD (US);
Jan Vilhuber, San Luis Obispo, CA (US);
Brian Weis, San Jose, CA (US);
Mark Baugher, Portland, OR (US);
David McGrew, Poolesville, MD (US);
Jan Vilhuber, San Luis Obispo, CA (US);
Brian Weis, San Jose, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
Group key management techniques are applied to generating pair-wise keys for point-to-point secure communication applications. Nodes participating in a secure communication group each receive a group key and associated policy information. When a first node wishes to establish a secure point-to-point connection to a second node, the first node derives a pairwise key from the group key and policy information, for example, by hashing the group key and information identifying the two nodes. As a result, a pairwise key is generated without exchanging negotiation messages among the two nodes and without expensive asymmetric cryptographic computation approaches.