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. 12, 2013
Filed:
Feb. 18, 2010
Tat Keung Chan, San Diego, CA (US);
Alexander Medvinsky, San Diego, CA (US);
Stuart P. Moskovics, San Diego, CA (US);
Jason A. Pasion, San Diego, CA (US);
Xin Qiu, San Diego, CA (US);
Tat Keung Chan, San Diego, CA (US);
Alexander Medvinsky, San Diego, CA (US);
Stuart P. Moskovics, San Diego, CA (US);
Jason A. Pasion, San Diego, CA (US);
Xin Qiu, San Diego, CA (US);
General Instrument Corporation, Horsham, PA (US);
Abstract
In a method for testing a transport packet decrypting module of a client device, a first decryption operation of the transport packet decrypting module is implemented on a test encrypted control word using a content decryption key ladder to derive a test control word, a second decryption operation of the transport packet decrypting module is implemented on one or more test transport packets using the test control word via a predetermined content decryption algorithm, the KIV is derived from the decrypted transport packets, and the derived KIV is compared with a value stored in the client device to verify whether the transport packet decrypting module of the client device is functioning properly.