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:
Apr. 30, 2019
Filed:
Jun. 06, 2016
Motorola Solutions, Inc., Schaumburg, IL (US);
Katrin Reitsma, Chicago, IL (US);
Michael F. Korus, Eden Prairie, MN (US);
MOTOROLA SOLUTIONS, INC., Chicago, IL (US);
Abstract
Method and server for issuing a cryptographic key. One method includes distributing a first group key to a first communication device and a second communication device. The method also includes distributing a security request to the first communication device. The method further includes receiving a security status from the first communication device responsive to transmitting the security request. The method also includes determining when security of the first communication device is compromised based on the security status. The method further includes distributing, via a server, the cryptographic key to the first communication device when the security of the first communication device is not compromised. The method also includes distributing, via the server, a second group key to the second communication device when the security of the first communication device is compromised and the first communication device cannot be fixed or deactivated.