Patent · US Active

Relay attack countermeasure system

US9584542B2 · kind B2 · utility

5Cited by

2References

8Claims

0Family size

Assignee

TEXAS INSTRUMENTS INCORPORATED · US

Inventors

Hun-Seok Kim · Dallas, US
Anand G. Dabak · Plano, US
Jing-Fei Ren · Plano, US
Manish Goel · Plano, US

Key dates

Filing date	Feb 4, 2015
Grant date	Feb 28, 2017
Priority date	—
Expiry date	Feb 4, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH04W12/61
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

An apparatus for preventing a relay attack that includes a microcontroller, a receiver, and a transmitter. The receiver is configured to receive a challenge message from a verifier. The challenge message has a challenge message frequency at a first challenge message frequency during a first time slot. The transmitter is configured to transmit a response message to the verifier. The response message has a response message frequency at a first response message frequency during the first time slot. The first response message frequency is different than the first challenge message frequency. The challenge message frequency is at a second challenge message frequency and the response message frequency is at a second response message frequency during a second time slit. The second challenge message frequency is different than the second response message frequency.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.