×

Vehicle key function control from a mobile phone based on radio frequency link from phone to vehicle

  • US 9,252,951 B1
  • Filed: 06/13/2014
  • Issued: 02/02/2016
  • Est. Priority Date: 06/13/2014
  • Status: Active Grant
First Claim
Patent Images

1. A mobile communication device, comprising:

  • a processor;

    a memory; and

    an application stored in the memory, that when executed by the processor,receives a key and a salt from a vehicle key server, wherein the key and the salt are numeric codes that are associated with the mobile communication device and a vehicle, and wherein the salt is random data that is used as an input to a one-way function that hashes a password or passphrase,generates a plurality of credentials based on the key and the salt using an algorithm, wherein the credentials are numeric codes that serve to unlock the vehicle,transmits a credential of the plurality of credentials to the vehicle, wherein the vehicle receives and compares the received credential with a plurality of credentials stored by the vehicle and the vehicle performs an unlock command and unlocks the vehicle when the received credential from the mobile communication device matches one of the plurality of credentials stored by the vehicle,generates a new salt, andtransmits a sync command to the vehicle, wherein the sync command comprises the new salt, whereby the vehicle is commanded by the mobile communication device to generate a second plurality of credentials based on the key and the new salt using the algorithm.

View all claims
  • 6 Assignments
Timeline View
Assignment View
    ×
    ×