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Configurable cryptographic controller area network (CAN) device

  • US 9,935,774 B2
  • Filed: 11/30/2015
  • Issued: 04/03/2018
  • Est. Priority Date: 05/22/2015
  • Status: Active Grant
First Claim
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1. A method for operating a Controller Area Network (CAN) device, the method comprising:

  • performing a security function on data traffic received from a CAN bus interface of a CAN transceiver or from a microcontroller communications interface of the CAN transceiver using a security module of the CAN device connected between the CAN bus interface and the microcontroller communications interface; and

    setting an operational mode for the CAN transceiver using an operational mode controller connected between the security module and the CAN bus interface such that a CAN Flexible Data-rate (FD) frame or a corresponding CAN frame is output from the CAN bus interface, wherein an identifier of the CAN FD frame is the same as an identifier of the corresponding CAN frame.

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