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Method and system for improving the data security during a communication process

  • US 10,680,816 B2
  • Filed: 03/25/2015
  • Issued: 06/09/2020
  • Est. Priority Date: 03/26/2014
  • Status: Active Grant
First Claim
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1. A vehicle executed method for improving data security in a communication process in vehicle-to-X communication, comprising:

  • in response to an outgoing message from a vehicle;

    1) signing, by a processor of the vehicle, the outgoing message to produce an authenticated outgoing message by hashing the outgoing message and encrypting the hashed outgoing message, and2) transmitting, by the processor, the authenticated outgoing message and an outgoing certificate having an outgoing public key; and

    in response to receiving from a sender, by the processor, an unencrypted incoming message containing communication data, an encrypted first hash and an incoming certificate having an incoming public key, and a hardware security module as a dedicated integrated circuit of the vehicle separate from the processor, being electrically coupled to the processor in order to check an authenticity of the unencrypted incoming message;

    1) hashing, by the processor, the unencrypted incoming message to create a second hash,2) sending, by the processor, the encrypted first hash and the incoming public key to the hardware security module,3) decrypting, by the hardware security module, the encrypted first hash using the incoming public key to create a decrypted first hash,4) sending, by the hardware security module, the decrypted first hash to the processor, and5) authenticating, by the processor, the unencrypted incoming message when the decrypted first hash matches the second hash,wherein the processor is configured to perform a boot procedure.

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