Systems and methods for message assurance in vehicle systems

    公开(公告)号:US11423162B2

    公开(公告)日:2022-08-23

    申请号:US16833200

    申请日:2020-03-27

    Abstract: A vehicle control system, including an in-vehicle bus and a plurality of electronic control units (ECUs) coupled to the in-vehicle bus, wherein at least one ECU of the plurality of ECUs is configured to: receive, at a respective at least one ECU of the plurality of ECUs, a message in a message stream on the in-vehicle bus; evaluate the message to determine at least one of a confidence value of the security classification, a significance value of the message, or a bounds check value of the message; and determine in real-time to allow or deny the message to the vehicle control system based on at least one of the significance value of the message, the bounds check value of the message, or the confidence value of the security classification of the message, to provide a sanitized message stream to the vehicle control system.

    Leader Bootstrapping and Recovery of Time in Time Sensitive Networks

    公开(公告)号:US20220224501A1

    公开(公告)日:2022-07-14

    申请号:US17706939

    申请日:2022-03-29

    Abstract: Time recovery techniques are described. A method comprises receiving messages from the first device by the second device in the first network domain, the messages to comprise time information to synchronize a first clock for the first device and a second clock for the second device to a network time, determining the second clock is to recover the network time for the second device without new messages from the first device, retrieving a first set of timestamps previously stored for events in the first network domain using the network time from the second clock, retrieving a second set of timestamps previously stored for the events in the first network domain using a redundant time from a third clock, where the third clock is not synchronized with the first and second clocks, and recovering the network time using a regression model and the redundant time from the third clock.

    Intrusion detection system based on 2-point profiling of signal characteristics

    公开(公告)号:US10124764B1

    公开(公告)日:2018-11-13

    申请号:US15720478

    申请日:2017-09-29

    Abstract: Various systems and methods for intrusion detection are described herein. An electronic device for intrusion detection includes memory circuitry to store a set of signature voltage ratios and a corresponding set of node identifiers, each node identifier corresponding to a unique signature voltage ratio; and security circuitry to: compare voltages received at a first and second measuring point on a bus, the voltages resulting from a message transmitted by a sending node on the bus, the first measuring point providing a first voltage and the second measuring point providing a second voltage; calculate a test voltage ratio from the first voltage and the second voltage; determine whether the test voltage ratio is in the set of signature voltage ratios; and initiate a security response based on whether the test voltage ratio is in the set of signature voltage ratios.

Patent Agency Ranking