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:
Aug. 17, 2010
Filed:
Aug. 11, 2003
Ram Gopal Lakshmi Narayanan, Woburn, MA (US);
Ram Gopal Lakshmi Narayanan, Woburn, MA (US);
Nokia Corporation, Espoo, FI;
Abstract
A method for establishing a secure communications tunnel between a first node and a second node in a communication system includes a plurality of networks each having a respective tunnel control entity for controlling establishment of secure communications tunnels in the respective network. The first node operates in a first one of the networks and the second node operates in a second one of the networks. The method includes determining a route for the communications tunnel from the first network to the second network by way of one or more of the other networks. A request message digitally signed by the first node is formed and the identities of the tunnel control entity of the first network and the tunnel control entities of the other networks are included. The request message from the first node to the tunnel control entity of the second network is transmitted. In response to that message, the secure communication tunnel is established between the first node and the second node by way of the tunnel control entities identified in that message.