CN204641672U - A kind of hybrid vehicle electronic locking anti-theft system of high security - Google Patents

Abstract

The utility model discloses a kind of hybrid vehicle electronic locking anti-theft system of high security, comprising: anti-theft controller key generator, its rolled off the production line by car load equipment and anti-theft controller are encrypted by two-stage and are generated antitheft key; Key authentication device, it is for the certification of entire car controller and anti-theft controller.This hybrid vehicle electronic locking anti-theft system is generated by two level encryption methods and meets one-way, non-uniform probability distribution, key that anti-collision is strong, complete the certification between anti-theft controller and entire car controller and the secure access to anti-theft controller further, significantly reduce the possibility that anti-theft system is decrypted, greatly strengthen the safety of anti-theft system.

Description

A kind of hybrid vehicle electronic locking anti-theft system of high security

Technical field

The present invention relates to a kind of vehicle electronics locking anti-theft system, be specifically related to a kind of hybrid vehicle electronic locking anti-theft system.

Background technology

For the consideration to automotive safety, automobile burglar becomes standard configuration America and Europe, is also increasing with the speed per year over 8% at the assembly rate of China.What current application was maximum is that third generation anti-theft system---electronic type is antitheft, namely anti-theft controller (IMMO) is verified the initiation key being inserted into key hole, by rear, anti-theft controller is verified with driving engine or entire car controller (VCU) again.Only have by after these two checkings, automobile is just allowed to start; Otherwise, do not allow automobile starting.

And currently have the system key (SK) used in the anti-theft locking method of greatly whole-car firm to be produced by random function, the definition of this function is all be supplied to car production enterprise by the manufacturer of anti-theft controller, its structure is simple, anti-collision is poor, test the shortcomings such as incomplete, there are major safety risks (as identical and cause a key can open two different vehicles etc. in there is two cars key) in the links such as the write of this key when automobile rolls off the production line, derive subsequent keys management and bitting, this is very unfavorable to the safety of automobile.

Summary of the invention

For solving the deficiency that prior art exists, the invention provides a kind of electronic locking anti-theft system of whole car controller of hybrid electric car of high security, mainly meeting the complexity and the reliability that strengthen anti-theft system key (SK) under the short and well-distributed prerequisite of algorithm one-way, time of run, and then reduce the possibility that is decrypted of anti-theft system and contingent key repeats, strengthen the safety of anti-theft system.

The present invention realizes by the following technical solutions:

A hybrid vehicle electronic locking anti-theft system for high security, comprising:

Anti-theft controller key generator, its rolled off the production line by car load equipment and anti-theft controller are encrypted by two-stage and are generated antitheft key, specifically comprise:

Request module, sends safety for the car load equipment that rolls off the production line to anti-theft controller and enters request;

First random number provide module, for anti-theft controller receive safety enter request after, send the random number of 4 bytes to diagnostic equipment or the car load equipment of rolling off the production line;

One-level encrypting module, anti-theft controller gets latter six of automobile VIN code, generates the encrypted result of 4 bytes through encryption function one, in conjunction with this encrypted result, generates encrypted result by encryption function two pairs of random number encryptions;

Secondary encrypting module, the car load equipment that rolls off the production line is encrypted by identical encryption function one and encryption function two pairs of random numbers and VIN code and encrypted result is returned to anti-theft controller; The car load equipment that rolls off the production line records this encrypted result simultaneously;

Matching module, whether the roll off the production line encrypted result of equipment of the encrypted result that anti-theft controller compares self and car load is identical, identical, enters certification, otherwise do not enter certification by safety, do not allow the operation being configured the functions such as key by safety;

Key writing module, encrypted result is written in anti-theft controller as system key by the car load equipment that rolls off the production line;

Key authentication device, it, for the certification of entire car controller and anti-theft controller, specifically comprises:

Second random number provides module, and entire car controller sends the random number of 4 bytes to anti-theft controller to CAN;

Entire car controller encrypting module, entire car controller is after sending random number, and the system key generated by verification function and described anti-theft controller key generator is to random number encryption and generate encrypted result;

Anti-theft controller authentication module, anti-theft controller, after receiving the random number that entire car controller sends, is encrypted by identical verification function and double secret key random number, the encrypted result of generation is returned to entire car controller by CAN;

Results contrast authentication module, entire car controller compares the encrypted result that self encrypted result and anti-theft controller return, if comparative result is identical, then allows start a car; If comparative result is different, then anti-theft controller and entire car controller authentification failure, the output of high-tension current and moment of torsion will be prohibited.

The hybrid vehicle electronic locking anti-theft system of a kind of high security provided by the invention, encrypt to generate by two-stage and meet one-way, non-uniform probability distribution, key that anti-collision is strong, complete the certification between anti-theft controller and entire car controller (VCU) and the secure access to anti-theft controller further, significantly reduce the possibility that anti-theft system is decrypted, greatly strengthen the safety of anti-theft system.

Accompanying drawing explanation

Fig. 1 is that the antitheft key of hybrid vehicle electronic locking anti-theft system produces diagram of circuit.

Detailed description of the invention

Specific embodiments of the present utility model is described in detail below in conjunction with accompanying drawing.

A hybrid vehicle electronic locking anti-theft system for high security, comprising:

Anti-theft controller key generator, its rolled off the production line by car load equipment and anti-theft controller are encrypted by two-stage and are generated antitheft key, and antitheft key produces flow process as shown in Figure 1, and this anti-theft controller secret generating implement body comprises:

(1) request module, sends safety for car load (EOL) equipment that rolls off the production line to anti-theft controller (IMMO) and enters request;

(2) first random numbers provide module, and IMMO sends the random number of 4 bytes after receiving and entering request safely to diagnostic equipment or EOL equipment;

(3) one-level encrypting module, IMMO gets automobile VIN code (Vehicle Identification Number, vehicle identification code) latter six, the encrypted result of 4 bytes is generated through encryption function one, in conjunction with this encrypted result, generate encrypted result by encryption function two pairs of random number encryptions;

(4) secondary encrypting module, EOL equipment is encrypted by identical encryption function one and encryption function two pairs of random numbers and VIN code and encrypted result is returned to IMMO; EOL equipment records this encrypted result simultaneously;

(5) matching module, whether the encrypted result that IMMO compares self is identical, identical with the encrypted result of EOL equipment, enters certification by safety, otherwise do not enter certification by safety, do not allow the operation being configured the functions such as key;

(6) key writing module, encrypted result is written in IMMO as system key (SK) by EOL equipment.

Key authentication device, it is for the certification of entire car controller and anti-theft controller, when vehicle launch, need the certification of IMMO and entire car controller (VCU), after namely entire car controller and IMMO certification are passed through, can vehicle launch be allowed, otherwise, do not allow vehicle launch.Specifically comprise:

(1) second random number provides module, and entire car controller sends the random number of 4 bytes to IMMO to CAN;

(2) entire car controller encrypting module, entire car controller, after sending random number, generates encrypted result by verification function and SK to random number encryption;

(3) anti-theft controller authentication module, IMMO, after receiving the random number that entire car controller sends, is encrypted by identical verification function and double secret key random number, the encrypted result of generation is returned to entire car controller by CAN;

(4) results contrast authentication module, entire car controller compares the encrypted result that self encrypted result and IMMO return, if comparative result is identical, then allows start a car; If comparative result is different, IMMO and entire car controller authentification failure are described, the output of high-tension current and moment of torsion will be prohibited.

Claims (1)

1. a hybrid vehicle electronic locking anti-theft system for high security, comprising:

Anti-theft controller key generator, its rolled off the production line by car load equipment and anti-theft controller are encrypted by two-stage and are generated antitheft key, specifically comprise:

Request module, sends safety for the car load equipment that rolls off the production line to anti-theft controller and enters request;

First random number provide module, for anti-theft controller receive safety enter request after, send the random number of 4 bytes to diagnostic equipment or the car load equipment of rolling off the production line;

One-level encrypting module, anti-theft controller gets latter six of automobile VIN code, generates the encrypted result of 4 bytes through encryption function one, in conjunction with this encrypted result, generates encrypted result by encryption function two pairs of random number encryptions;

Secondary encrypting module, the car load equipment that rolls off the production line is encrypted by identical encryption function one and encryption function two pairs of random numbers and VIN code and encrypted result is returned to anti-theft controller; The car load equipment that rolls off the production line records this encrypted result simultaneously;

Matching module, whether the roll off the production line encrypted result of equipment of the encrypted result that anti-theft controller compares self and car load is identical, identical, enters certification, otherwise do not enter certification by safety, do not allow the operation being configured the functions such as key by safety;

Key writing module, encrypted result is written in anti-theft controller as system key by the car load equipment that rolls off the production line;

Key authentication device, it, for the certification of entire car controller and anti-theft controller, specifically comprises:

Second random number provides module, and entire car controller sends the random number of 4 bytes to anti-theft controller to CAN;

Entire car controller encrypting module, entire car controller is after sending random number, and the system key generated by verification function and described anti-theft controller key generator is to random number encryption and generate encrypted result;

Anti-theft controller authentication module, anti-theft controller, after receiving the random number that entire car controller sends, is encrypted by identical verification function and double secret key random number, the encrypted result of generation is returned to entire car controller by CAN;

Results contrast authentication module, entire car controller compares the encrypted result that self encrypted result and anti-theft controller return, if comparative result is identical, then allows start a car; If comparative result is different, then anti-theft controller and entire car controller authentification failure, the output of high-tension current and moment of torsion will be prohibited.