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A pure electric vehicle anti-theft key authentication method

A pure electric vehicle and anti-theft key technology, which is applied in the field of pure electric vehicle anti-theft key authentication, can solve the problems that cannot meet the needs of new energy vehicle anti-theft, and achieve the goal of increasing the difficulty of cracking, increasing the complexity, and high authentication security performance Effect

Active Publication Date: 2021-09-17
浙江新吉奥汽车有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the traditional anti-theft technology has been unable to meet the needs of new energy vehicle anti-theft

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0033] This embodiment provides a pure electric vehicle anti-theft key authentication method, the specific steps are as follows:

[0034] Step 1: In the normal locked state, both the body controller and the smart key are in a dormant state. When the body controller obtains a trigger signal (when the door switch, brake signal, P / N gear signal, start button, etc. are valid), Send a 125kHz low-frequency wake-up signal to the smart key (that is, send a random key code SK (48bit) and drive the corresponding low-frequency magnetic field antenna to work).

[0035] In the second step, the smart key receives the low-frequency wake-up signal and performs field strength detection; if the low-frequency wake-up signal is higher than the preset threshold in the smart key, enter the third step, otherwise, return to the first step to continue to sleep state. Among them, the smart key performs field strength detection to obtain a high-frequency signal of the key coordinates relative to the ve...

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Abstract

The invention discloses a pure electric vehicle anti-theft key authentication method, comprising the following steps: waking up the smart key, and feeding back a key coordinate high-frequency signal and the unique Key ID of the smart key to the body controller; the body controller generates a first random Both the body controller and the smart key use the HITAG2 algorithm to encrypt the Key ID, the first random number, and the low-frequency wake-up signal; if the ciphertexts obtained by the encryption of the body controller and the smart key are consistent, the authentication of the body controller and the smart key is completed ;The body controller generates the second random number Key, the third random number Key1 and sends it to the vehicle controller by CAN bus; the vehicle controller generates and replies the fourth random number Key2 and the fifth random number Key3 to the body controller; Both the body controller and the whole vehicle controller use the second random number Key, the third random number Key1, the fourth random number Key2, the fifth random number Key3 and the agreed number A to carry out two-way authentication, so as to realize the start of the pure electric vehicle.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a method for realizing anti-theft key authentication of pure electric vehicles. Background technique [0002] At present, the existing anti-theft of new energy vehicles is mainly reflected in the anti-entry alarm; when the vehicle is parked in a remote area, the thief can still break the window to enter the vehicle, and can still start the vehicle very simply. Therefore, the traditional anti-theft technology has been unable to meet the needs of new energy vehicle anti-theft. Contents of the invention [0003] The purpose of the present invention is to provide a pure electric vehicle anti-theft key authentication implementation method, the technical scheme adopted in the present invention is as follows: [0004] A pure electric vehicle anti-theft key authentication method, comprising the following steps: [0005] Step S1, the body controller and the smart key are bot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G07C9/00H04L29/06H04L9/32H04L9/08B60R25/24B60R25/04
CPCB60R25/04B60R25/24G07C9/00309G07C9/00571G07C9/00817H04L9/0869H04L9/3213H04L63/0869
Inventor 刘露姚俊杰袁承享盛旺赵云陈祖金刘荣伟
Owner 浙江新吉奥汽车有限公司
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