Method for realizing security key authentication of pure electric vehicle

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 such as the inability to meet the anti-theft requirements of new energy vehicles, and achieve the effect of increasing the difficulty of cracking, increasing the complexity, and reducing encryption loss.

Active Publication Date: 2019-10-08
浙江新吉奥汽车有限公司
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  • Summary
  • 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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PUM

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Abstract

The invention discloses a method for realizing the security key authentication of a pure electric vehicle. The method comprises the steps: waking up a smart key, feeding back a high-frequency key coordinate signal and a unique key ID of the smart key to a vehicle body controller; generating a first random number by the vehicle body controller and encrypting the Key ID, the first random number anda low-frequency wake-up signal by the vehicle body controller and the smart key based on an HITAG2 algorithm; completing authentication of the vehicle body controller and the smart key under the condition of consistence of the vehicle body controller and a ciphertext obtained by smart key encryption; generating a second random number Key and a third random number Key1 by the vehicle body controller and sending the second random number Key and the third random number Key1 to an overall vehicle controller; generating a fourth random number Key2 and a fifth random number Key3 by the overall vehicle controller and replying the fourth random number Key2 and the fifth random number Key3 to the vehicle body controller; and carrying out two-way authentication by the vehicle body controller and theoverall vehicle controller by using the second random number Key, the third random number Key1, the fourth random number Key2, the fifth random number Key3, and a conventional number A to realize starting of a 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 Applications(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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