Vehicle anti-theft system and method

Abstract

The invention relates to an anti-attack anti-theft system. Systems and methods for anti-theft of vehicles are provided. Each of the two or more locking point devices generates a random number and broadcasts it to all other locking point devices. Each of the lockpoint devices retains its own local copy of the nonce and concatenates its own local copy of the nonce to the other of the two or more lockpoint devices from the bus A random number for the device. From the nonce broadcast on the bus all nonces are concatenated in a predetermined sequence to form a single challenge, which is sent to the remote transponder. Each locking point device then compares the individual response from the transponder with its local concatenation. When a specific portion of the response from the transponder matches the local series, the function of the locking point device is enabled.

Description

technical field [0001] The technical field generally relates to vehicle anti-theft systems and methods. In particular, the field relates to the use of the concatenation of random security key codes derived from and independently authenticated by one or more user identification devices using various components necessary to start and / or operate a vehicle . Background technique [0002] Although it has decreased in recent years, auto theft remains a persistent problem. Nationally in the United States in 2005, there were an estimated 1.2 million motor vehicle thefts, or approximately 416.7 motor vehicle thefts per 100,000 households. Property losses due to motor vehicle theft were estimated at $7.6 billion in 2005. Since then, the number of motor vehicle thefts has dropped nationwide. For 2009, the most recent statistics show an estimated 794,616 motor vehicle thefts nationwide, representing almost $5.2 billion in property damage. [0003] Today, many motor vehicles utilize...

AI Technical Summary

Problems solved by technology

[0009] While this approach is effective to a certain extent, the fact that only one master immobilizer module 5 provides the final authentication necessary to start the vehicle may not always provide an optimal anti-theft system, for example due to the possibility of being hacked. Tampering with the immobilizer unit 5 or ECM 3 in order to start the vehicle

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