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:
Feb. 25, 2014
Filed:
Jul. 18, 2011
Shaokai Wen, South Barrington, IL (US);
James M. Nowakowski, Buffalo Grove, IL (US);
Shaokai Wen, South Barrington, IL (US);
James M. Nowakowski, Buffalo Grove, IL (US);
Motorola Solutions, Inc., Schaumburg, IL (US);
Abstract
A service ticket request is transmitted to a key distribution center in response to providing the security credential. In response to the transmitting, a session key encrypted with a TGT session key shared between a SIP client and a Kerberos authentication server, and a service ticket encrypted with a SIP service key shared between a SIP server and the Kerberos authentication server are received. The service ticket includes the session key. The session key, encrypted with the SIP session key shared between the SIP client and the Kerberos authentication server, is decrypted by the SIP client. The service ticket is transmitted to a SIP server. The SIP server decrypts the service ticket using the SIP service key shared between the SIP server and the Kerberos authentication server and stores the session key. The session key is utilized for mutual digest authentication between the SIP client and the SIP server.