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:
Mar. 09, 2012
Thomas J. Senese, Schaumburg, IL (US);
Helen Y. Hoselton, Arlington Heights, IL (US);
Obaid Shahab, Lombard, IL (US);
Thomas J. Senese, Schaumburg, IL (US);
Helen Y. Hoselton, Arlington Heights, IL (US);
Obaid Shahab, Lombard, IL (US);
MOTOROLA SOLUTIONS, INC., Schaumburg, IL (US);
Abstract
A method and apparatus for transmitting encryption keys in a secure communication system is provided herein. During rekeying of a device, a key encryption key (KEK) is utilized to wrap (encrypt) the traffic encryption key (TEK) when the KEK is available to the device. If unavailable, the TEK will be wrapped using public key encryption with the recipient device's public key. The receiving device will then be able to unwrap the TEK using public key decryption with its own private key. Because TEKs are always transmitted in a secure manner, secure and efficient rekeying of devices on foreign networks can occur.