IDiyas

For the Inventor, By the Inventor

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.:

US 8948394 B1

PDFFull Text
Date of Patent:
Feb. 03, 2015

Filed:

Feb. 28, 2007

Method and apparatus for distribution and synchronization of cryptographic context information

Applicant:

Kuang M. Chen, San Diego, CA (US);

Inventor:

Kuang M. Chen, San Diego, CA (US);

Assignee:

Google Technology Holdings LLC, Mountain View, CA (US);

Attorney:

Fox Rothschild LLP

Primary Examiner:

Ashok Patel

Assistant Examiner:

Daniel Potratz

Int. Cl.
CPC ...
H04L 9/00 (2006.01); H04L 29/06 (2006.01); H04H 60/23 (2008.01); H04N 7/167 (2011.01); H04N 21/2389 (2011.01); H04N 21/254 (2011.01); H04N 21/258 (2011.01); H04N 21/266 (2011.01); H04N 21/643 (2011.01); H04L 9/32 (2006.01); H04H 60/14 (2008.01);
U.S. Cl.
CPC ...
H04L 63/0428 (2013.01); H04H 60/23 (2013.01); H04L 63/062 (2013.01); H04N 7/1675 (2013.01); H04N 21/23895 (2013.01); H04N 21/2541 (2013.01); H04N 21/25816 (2013.01); H04N 21/26606 (2013.01); H04N 21/26613 (2013.01); H04N 21/64322 (2013.01); H04H 60/14 (2013.01); H04L 63/0807 (2013.01); H04L 2463/062 (2013.01); H04L 2463/101 (2013.01);
Abstract

Method and apparatus for distribution and synchronization of cryptographic context information is described. An aspect of the invention relates to synchronizing an encryptor and key management logic in a video distribution system. A request message is received from the encryptor. The request message includes authentication data and stream-dependent parameters associated with an internet protocol (IP) packet stream to be encrypted. Authenticity of the encryptor is verified using the authentication data. A cryptographic context for the IP packet stream is generated having the stream-dependent parameters and at least one encryption key. A reply message is sent to the encryptor having the at least one encryption key. Key stream messages having the cryptographic context are distributed towards user devices. The user devices are receiving an encrypted version of the IP packet stream generated by the encryptor.

Find Patent Forward Citations

Loading…