US 10,884,044 B1Granted

Method of detecting unauthorized devices installed on electrical interfaces of vehicles

AssigneeOceanshield Pte Ltd

InventorsJonathan Erik G. Savoir, Mikhail Solomon Zeldovich, Alexey Sergeevich Pronichkin, Dmitry Mikhaylovich Mikhaylov

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Abstract

This invention relates to cybersecurity enforcement in vehicle control systems, more specifically, to the protection of electrical interfaces as components of such control systems. The method of detecting unauthorized devices installed on electrical interfaces of vehicles comprises measuring the impedances (the reactive and the active resistances) of the electrical interface at the initial moment of time and subsequently. The measurement of the active component of the electrical interface resistance comprises the measurement of the current and voltage of the devices connected to the electrical interface followed by the calculation of the total resistance of all the devices. The measurement of the reactive component of the electrical interface resistance comprises the measurement of the capacitance component of the electrical interface resistance by the impedance spectroscopy method. The technical result of the invention disclosed herein is the prevention and elimination of the threat option, more specifically, the installation of unauthorized devices on electrical interfaces.

Claims11

Dependent claims

A method for detecting a connection of an unauthorized electronic device to an electrical interface of a vehicle, the electrical interface for connecting a plurality of control electronic devices to the vehicle, the plurality of control electronic devices for providing control to the vehicle, the method being executable by a measuring device communicatively coupled to the vehicle via the electrical interface, the method comprising:

at a first moment in time, determining, by the measuring device, a first value of a total electrical impedance of the electrical interface, the determining the first value of the total electrical impedance of the electrical interface being based on internal impedance values associated with the plurality of control electronic devices connected thereto, wherein for each one of the plurality of control electronic devices, a respective internal impedance value has been predetermined;
at a second moment in time after the first moment in time, determining, by the measuring device, a second value of the total electrical impedance of the electrical interface, the determining the second value of the total electrical impedance of the electrical interface being based on internal impedance values associated with each electronic device connected thereto;
in response to the second value of the total electrical impedance being different from the first value of the total electrical impedance, determining that the unauthorized electronic device is being connected to the electrical interface of the vehicle.

Dependencies are inferred from the claim text.