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:
Sep. 22, 2015
Filed:
Apr. 04, 2005
Michael K. Brown, Kitchener, CA;
Herb Little, Waterloo, CA;
Michael S. Brown, Waterloo, CA;
Neil Adams, Waterloo, CA;
Michael Mccallum, Kitchener, CA;
Dinah Davis, Waterloo, CA;
Michael K. Brown, Kitchener, CA;
Herb Little, Waterloo, CA;
Michael S. Brown, Waterloo, CA;
Neil Adams, Waterloo, CA;
Michael McCallum, Kitchener, CA;
Dinah Davis, Waterloo, CA;
BLACKBERRY LIMITED, Waterloo, Ontario, CA;
Abstract
A cryptographic key is used to secure a communication link between a first device and a second device. Generating the cryptographic key is accomplished by a) generating a first cryptographic key, b) generating a second cryptographic key, c) applying a hash function to packets transmitted over the communication link to create a hash result, and d) applying the hash function to the first cryptographic key, the second cryptographic key and the hash result.