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:
Feb. 04, 2014
Filed:
May. 06, 2009
Rolf Blom, Jarfalla, SE;
Yi Cheng, Sundbyberg, SE;
John Mattsson, Taby, SE;
Mats Naslund, Bromma, SE;
Karl Norrman, Stockholm, SE;
Rolf Blom, Jarfalla, SE;
Yi Cheng, Sundbyberg, SE;
John Mattsson, Taby, SE;
Mats Naslund, Bromma, SE;
Karl Norrman, Stockholm, SE;
Telefonaktiebolaget L M Ericsson (Publ), Stockholm, SE;
Abstract
A method and apparatus for sending protected media data from a data source node to a client node via an intermediate node. The data source node establishes a first hop-by-hop key to be shared with the intermediate node and an end-to-end key to be shared with the client node. A single security protocol instance is configured and used to trans-protocol form data from a media stream into transformed data using the keys. The transformed data is then sent to the intermediate node. The intermediate node uses the first hop-by-hop key to apply a security processing to the transformed data, and establishes a second hop-by-hop key with the client node. A second transformation is performed on the transformed data using the second hop-by-hop key to produce further transformed media data, which is then sent to the client node. At the client node a single security protocol instance is configured with the second hop-by-hop key and the end-to-end key, which are used to apply further security processing to the transformed media data.