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:
Dec. 27, 2011
Filed:
Jun. 23, 2006
Subhas Kumar Ghosh, Bangalore, IN;
Subhas Kumar Ghosh, Bangalore, IN;
Honeywell International Inc., Morristown, NJ (US);
Abstract
In one embodiment, a method of forming a secure group from a plurality of nodes for communicating with a user A comprises performing a discover protocol, wherein after performing the discover protocol, all nodes belong to at most one small group and wherein all nodes in each small group share a common key. The method further comprises selecting a leader for each small group. The method further comprises, for each of the leaders, generating a respective common key for the user A and that respective leader. The method further comprises generating a key tree having a plurality of levels, wherein the keys for the lowest level of the key tree are the common keys generated for each leader and wherein the keys for each successive layer are generated by combining pairs of keys from lower levels of the key tree.