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:
Nov. 26, 2013
Filed:
Jan. 04, 2010
Paul D. Ducharme, Richmond Hill, CA;
Wendy Wai Yin Cheung, Toronto, CA;
Albert Yunsang Wong, Toronto, CA;
Shijun Huang, Markham, CA;
Norman V. D. Stewart, Toronto, CA;
Paul D. Ducharme, Richmond Hill, CA;
Wendy Wai Yin Cheung, Toronto, CA;
Albert Yunsang Wong, Toronto, CA;
Shijun Huang, Markham, CA;
Norman V. D. Stewart, Toronto, CA;
VIXS Systems, Inc, Toronto, Ontario, CA;
Abstract
A device includes a key store memory that stores one or more cryptographic keys. A rule set memory stores a set of rules for accessing the cryptographic keys. A key store arbitration module grants access to the cryptographic keys in accordance with the set of rules. The device can be used in conjunction with a key ladder. The device can include a one-time programmable memory and a load module that transfers the cryptographic keys from the one one-time programmable memory to the key store memory and the set of rules to the rule set memory. A validation module can validate the cryptographic keys and the set of rules stored in the key store and rule set memories, based on a signature defined by a signature rule.