Secure session communication between a mobile device and a base station

US10412581B2 · kind B2 · utility

Assignee

• Ford Global Technologies, LLC · US

Inventors

• Cameron Smyth · Wyandotte, US
• Robert James Southern · Madison Heights, US
• John Robert Van Wiemeersch · Harper Woods, US
• David Ray Erkkila · Brighton, US
• Mike Raymond Westra · Plymouth, US
• Aldi Caushi · Northville, US
• John W. Turner · Gregory, US
• Bobak Shahidehpour · Ann Arbor, US
• Vivekanandh Elangovan · Canton, US

Key dates

• Filing date: Feb 14, 2017
• Grant date: Sep 10, 2019
• Expiry date: Oct 20, 2037

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L2209/80
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

A vehicle includes: (i) a main telematics module, (ii) a connectivity module including antenna(s) and processor(s). The connectivity module is configured to: (a) authenticate a mobile device via a vehicle-access-key (VAK); (b), if (a), issue an ephemeral-session-key (DSK) to the mobile device; (c), if (b), establish an active session with the mobile device; (d) encrypt all messages to the mobile device with the VAK during (a) and with the DSK during (c). The connectivity module is configured to automatically revoke the DSK upon expiration of a predetermined time interval.