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. 09, 2016
Filed:
Jan. 11, 2013
Applicants:
Research IN Motion Limited, Waterloo, CA;
Certicom Corp., Mississauga, CA;
Inventors:
Michael Eoin Buckley, Grayslake, IL (US);
Gregory Marc Zaverucha, Redmond, WA (US);
Matthew John Campagna, Ridgefield, CT (US);
Assignees:
BlackBerry Limited, Waterloo, ON, CA;
Certicom Corp., Mississauga, ON, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 9/00 (2006.01); H04L 9/08 (2006.01); H04L 29/06 (2006.01);
U.S. Cl.
CPC ...
H04L 9/0861 (2013.01); H04L 63/306 (2013.01); H04L 2209/80 (2013.01);
Abstract
Systems and methods for secure communications are provided. In some aspects, a method of signalling an interception time period is described. At least one keying information used by a key management service (KMS) to regenerate a key is stored. A start_interception message is signaled from an administration function (ADMF) to a call session control function (CSCF). A halt_message is signaled from the ADMF to the CSCF.