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Engine anti-theft authentication method and device of an engine anti-theft system

An anti-theft system and authentication method technology, applied in anti-theft vehicle accessories, transportation and packaging, vehicle parts, etc., can solve the problems of long calculation time, long encryption algorithm code, large storage space, etc., to achieve fast calculation speed, The effect of short code and small storage space

Active Publication Date: 2016-06-08
GUANGZHOU AUTOMOBILE GROUP CO LTD
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AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems that the encryption algorithm code used in the engine anti-theft authentication method in the prior art is relatively long, takes up a large storage space, and takes a relatively long calculation time, the present invention provides a novel engine anti-theft authentication method for an engine anti-theft system

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  • Engine anti-theft authentication method and device of an engine anti-theft system

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Embodiment Construction

[0029] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0030] An engine anti-theft authentication method of an engine anti-theft system, the engine anti-theft system includes a smart key module, an intelligent entry keyless start module and an engine management module, the engine anti-theft authentication includes key authentication and engine controller authentication, and the key authentication is completed The authentication between the smart key module and the smart entry keyless start module, the engine controller authentication completes the authentication between the smart entry keyless start module and the engine mana...

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Abstract

The invention provides an engine anti-theft authentication method, the engine anti-theft authentication includes key authentication and engine controller authentication, and the engine controller authentication includes the following steps: the engine management module generates a set of random numbers, and forwards them through the body controller communication gateway For the smart entry keyless start module; the smart entry keyless start module performs encrypted calculations through the XTEA algorithm according to its pre-stored fixed code, key and the received random number, and authenticates part of the digits in the calculation result with the key After the result is replaced, the second data is generated and sent back to the engine management module through the communication gateway of the body controller; Compare, if match allows engine start, otherwise prohibits start. The invention also provides an anti-theft authentication device. The invention adopts the XTEA algorithm, occupies less space and has fast calculation time.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to an engine anti-theft authentication method and device using XTEA (eXtendedTinyEncryptionAlgorithm, extended micro-encryption algorithm). Background technique [0002] The engine anti-theft system is composed of FOB (smart key module), PEPS (Passive Entry and Passive Start, intelligent entry keyless start module) and EMS (Engine Management System, engine management module). The password authentication of the engine anti-theft system includes key authentication and engine controller authentication, the key authentication completes the authentication between the smart key module and the smart entry keyless start module, and the engine controller authentication completes the smart entry keyless entry module and the engine management module authentication between. [0003] The key authentication is handled by a special chip, the smart key is provided with a transponder, the transponder is ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R25/04
Inventor 赖瑞福杨土超杨佩君任强
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD
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