Mark G Carey

US Patent:

20200349254, Nov 5, 2020

Filed:

Apr 30, 2019

Appl. No.:

16/399812

Inventors:

- Irvine CA, US
Mark Carey - Worthington OH, US
Donald Bathurst - Denver CO, US

International Classification:

G06F 21/55
H04L 29/06

Abstract:

Systems, methods, and devices are described herein for detecting abnormalities within a system based on signal fingerprinting. A plurality of electrical signals are concurrently received from a transceiver over a time period. The time period is partitioned into a plurality of sampling windows. An electrical signal of the plurality of electrical signals is sequentially selected. For the sequentially selected electrical signal, a temporal snapshot of said electrical signal is iteratively captured over a sampling window of the plurality of sampling windows. This iterative capturing is repeated for remaining sampling windows of the plurality of sampling windows. Each captured temporal snapshot is temporally concatenated over the time period according to its respective temporal position of the time period to generate the signal fingerprint.

US Patent:

20200351276, Nov 5, 2020

Filed:

Jul 17, 2020

Appl. No.:

16/932335

Inventors:

- Irvine CA, US
Mark Carey - Worthington OH, US

International Classification:

H04L 29/06

Abstract:

Systems are provided herein for communications bus signal fingerprinting. A security module monitors a plurality of voltage lines of at least one electronic control unit (ECU) electrically coupled to a communications bus. A voltage differential across at least two of the plurality of voltage lines of the at least one ECU is measured. The voltage differential is compared to a plurality of predetermined signal fingerprints associated with the at least one ECU. A variance in the compared voltage differential is identified relative to one or more of the plurality of predetermined signal fingerprints. Data characterizing the identified variance is provided.

US Patent:

20190188420, Jun 20, 2019

Filed:

Feb 25, 2019

Appl. No.:

16/284854

Inventors:

- Irvine CA, US
Mark Carey - Worthington OH, US

International Classification:

G06F 21/81
H04L 12/40
G06F 21/75

Abstract:

Methods are described herein for communications bus data transmission using relative ground shifting. A plurality of voltage lines of at least one electronic control unit (ECU) are monitored. The at least one ECU electrically coupled to a communications bus. A voltage differential across at least two of the plurality of voltage lines of the at least one ECU is measured. A pulse or data stream is injected into the communications bus via one or two voltage lines based on the measured voltage differential having an amplitude lower than a predetermined voltage threshold.

US Patent:

20180268174, Sep 20, 2018

Filed:

Mar 17, 2017

Appl. No.:

15/462611

Inventors:

- Irvine CA, US
Mark Carey - Worthington OH, US

International Classification:

G06F 21/81
G06F 21/56

Abstract:

Methods are described herein for communications bus data transmission using relative ground shifting. A plurality of voltage lines of at least one electronic control unit (ECU) are monitored. The at least one ECU electrically coupled to a communications bus. A voltage differential across at least two of the plurality of voltage lines of the at least one ECU is measured. A pulse or data stream is injected into the communications bus via one or two voltage lines based on the measured voltage differential having an amplitude lower than a predetermined voltage threshold.

US Patent:

20180270195, Sep 20, 2018

Filed:

Mar 17, 2017

Appl. No.:

15/462565

Inventors:

- Irvine CA, US
Mark Carey - Worthington OH, US

International Classification:

H04L 29/06

Abstract:

Systems are provided herein for a hardware protection framework. A security module monitors a plurality of voltage lines of at least one electronic control unit (ECU) electrically coupled to a communications bus. A voltage differential across at least two of the plurality of voltage lines of the at least one ECU is measured. The voltage differential is compared to a plurality of predetermined signal fingerprints associated with the at least one ECU. A variance in the compared voltage differential is identified relative to one or more of the plurality of predetermined signal fingerprints. Data characterizing the identified variance is provided. In some aspects, a pulse or a data stream is injected based on the voltage differential having an amplitude lower than a predetermined voltage threshold.

US Patent:

20180270196, Sep 20, 2018

Filed:

Mar 17, 2017

Appl. No.:

15/462591

Inventors:

- Irvine CA, US
Mark Carey - Worthington OH, US

International Classification:

H04L 29/06

Abstract:

Methods are provided herein for communications bus signal fingerprinting. A security module monitors a plurality of voltage lines of at least one electronic control unit (ECU) electrically coupled to a communications bus. A voltage differential across at least two of the plurality of voltage lines of the at least one ECU is measured. The voltage differential is compared to a plurality of predetermined signal fingerprints associated with the at least one ECU. A variance in the compared voltage differential is identified relative to one or more of the plurality of predetermined signal fingerprints. Data characterizing the identified variance is provided.