CN105799620B - The security code of vehicle electric control module calculates - Google Patents
The security code of vehicle electric control module calculates Download PDFInfo
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- CN105799620B CN105799620B CN201410831031.1A CN201410831031A CN105799620B CN 105799620 B CN105799620 B CN 105799620B CN 201410831031 A CN201410831031 A CN 201410831031A CN 105799620 B CN105799620 B CN 105799620B
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Abstract
The present invention relates to the calculating of the security code of vehicle electric control module, belong to automobile technical field.Security code calculation method of the invention, comprising steps of the electronic control module being in the lock state is unlocked；Electronic control module is reset by sending control instruction；Secure code Authentication instruction and current temporary security code are sent to electronic control module, with judge whether the temporary security code matches with the security code that electronic control module stores, when being judged as matching, determine that the temporary security code is the security code of electronic control module.Security code calculation method of the invention is accurate, efficient.
Description
Technical field
The invention belongs to automobile technical field, the data interaction more particularly to vehicle that are related between deagnostic package and vehicle
The calculating of the security code of electronic control module.
Background technique
The security code (security code) of vehicle electric control module is a kind of authorization code, can be regarded as vehicle
One kind of key, usually can be 4 decimal numbers.Security code is produced at random in automobile factory's off-line test
It is raw, and be written in the electronic control module of the key such as anti-theft controller and engine electronic control system module, being can not
It reads.Security code tampers the electronic control such as anti-theft controller in the case where permitting without car owner for preventing
Data in module.Normally, in the case where not knowing the security code of Electronic controller module, even if using automobile manufacture
Factory is supplied to the diagnostic instrments of maintenance station, also haves no right to enter critical data area (such as the EEPROM number of Electronic controller module
According to memory block, key area etc.).
With the continuous improvement of car ownership, status of the after-sales maintenance service in whole system is more and more important.So
And security code plays a significant role in the after-sales service of vehicle, is generally necessary and knows.For example, in after-sale service
In, it is often necessary to refreshing programming, very is carried out in electronic control module (such as ECM, BCM etc.) of the maintenance service station after sale to vehicle
To key coupling learning is carried out, under normal circumstances, it is necessary to provide correct security code just and can be carried out the above operation.
But in the production process of automobile or vehicle, there are Some vehicles security code misregistration or the feelings of missing
Shape.These vehicles the electronic control module of these vehicles can not be programmed since incorrect security code will cause or
It repairs, add the operation of new key, therefore be easy to cause vehicle that can not carry out after-sales service.
For the security code mistake of electronic control module or the situation of missing, it is necessary to propose that a kind of security code calculates
Method obtains the security code of accurate vehicle electric control module.
Summary of the invention
It is an object of the present invention to accurately calculate the security code of vehicle electric control module.
To realize that object above or other purposes, the present invention provide following technical scheme.
It is an aspect of this invention to provide that providing a kind of security code calculation method of vehicle electric control module, including step
It is rapid:
The electronic control module being in the lock state is unlocked；
The electronic control module is reset by sending control instruction；
Secure code Authentication instruction and current temporary security code are sent to the electronic control module；
Judge whether the temporary security code matches with the security code that the electronic control module stores；
When being judged as mismatch, the accumulation operations for carrying out temporary security code to the temporary security code are faced with updating this
When security code, and return to the resetting electronic control module step；
When being judged as matching, determine that the temporary security code is the security code of the electronic control module.
Security code calculation method according to an embodiment of the invention, wherein the unlocked step includes:
Carry out vehicle ignition operation；
The starting source for requesting the electronic control module to be stored；And
The corresponding starting source obtains key and the key is sent to the electronic control module.
The security code calculation method of another embodiment according to the present invention, wherein reset the step of the electronic control module
In rapid, ignition switch shape is realized in such a way that the automobile bus connected to electronic control module sends the control instruction
The switching of state, to reset the electronic control module.
In the security code calculation method of foregoing description any embodiment, the step of resetting the electronic control module packet
It includes:
Switching vehicle ignition switch state is in off state；
Wait first time period；
Switching vehicle ignition switch state is in an open state；And
Wait second time period.
Specifically, the first time period can be 4 seconds to 30 seconds.
Specifically, the second time period can be 1 second to 5 seconds.
Specifically, the electronic control module can be anti-theft controller and/or engine electronic control system module.
Specifically, the electronic control module connects the CAN bus of the vehicle, and the CAN bus pass through it is vehicle-mounted
Bus communication component and external computer program control terminal communication connection.
Another aspect according to the invention provides a kind of security code computing device of vehicle electric control module, comprising:
Unlocking part, the electronic control module for being used to be in the lock state are unlocked；
Component is reset, is used to reset the electronic control module by sending control instruction；And
Matching block is used to send Secure code Authentication instruction and current temporary security code to the electronics control
Molding block, and judge whether the temporary security code matches with the security code that the electronic control module stores, wherein
When being judged as mismatch, the accumulation operations of temporary security code are carried out to update the interim safe generation to the temporary security code
Code, and return to the resetting component resetting electronic control module and determine that the temporary security code is when being judged as matching
The security code of the electronic control module.
The solution have the advantages that security code calculation method of the invention can accurately and rapidly calculate safety
Code plays in the after-sales maintenance service of vehicle and obviously makees particularly with security code mistake or the situation of missing
With.
Detailed description of the invention
From the following detailed description in conjunction with attached drawing, it will keep above and other purpose and advantage of the invention more complete
It is clear, wherein the same or similar element, which is adopted, to be indicated by the same numeral.
Fig. 1 is the basic composition according to the security code system of the calculating vehicle electric control module of one embodiment of the invention
Schematic diagram.
Fig. 2 is illustrated according to the security code calculation method process of the vehicle electric control module of one embodiment of the invention
Figure.
Specific embodiment
What is be described below is some in multiple possible embodiments of the invention, it is desirable to provide to of the invention basic
Solution, it is no intended to confirm crucial or conclusive element of the invention or limit scope of the claimed.It is readily appreciated that, according to this
The technical solution of invention, in the case where not changing connotation of the invention, those of ordinary skill in the art can propose can be mutual
Other implementations of replacement.Therefore, following specific embodiments and attached drawing are only the examples to technical solution of the present invention
Property explanation, and be not to be construed as whole of the invention or be considered as to define or limit technical solution of the present invention.
In following description, for the clear and concise of description, there is no retouch all multiple components shown in figure
It states.It is provided in the disclosure for being fully able to realize of the invention shown in the drawings of multiple components for those of ordinary skill in the art
Hold.To those skilled in the art, perhaps multipart operation is all familiar and apparent.
Fig. 1 show the basic of the security code system of the calculating vehicle electric control module according to one embodiment of the invention
Composition schematic diagram.In embodiments of the present invention, vehicle transmits information using CAN bus, and each electronic control module is connected to CAN
In bus, electronic control module can be anti-theft controller, engine electronic control system module etc., and electronic control module is also possible to
Other need to be written other kinds of one or more electronic control parts of security code during fabrication.As shown in Figure 1, vehicle
Communication connection is realized by connecting component with computer program end in end, specifically, realizes electricity by vehicle bus communication component
The automobile bus that brain (or computer) is connect with electronic control module realizes communication connection, and vehicle bus communication component for example may be used
With but be not limited to Spy3 communication component.The computer at computer program end is written into program to execute following reality as shown in Figure 2
The security code calculation method process of example is applied, vehicle bus communication component has ensured excessively is counting between computer and electronic control module
The communication interaction of calculation process, computer are used as the host computer of electronic control module at this time.
Fig. 2 is shown to be shown according to the security code calculation method process of the vehicle electric control module of one embodiment of the invention
It is intended to.It is illustrated below in conjunction with security code calculating process of the Fig. 1 and Fig. 2 to the embodiment.
Firstly, realize computer connect with electronic control module automobile bus realization communication connection after (such as Fig. 1) institute
Show, vehicle ignition operation can be carried out by artificially rotating key, that is, entering step S11, takes up in lock
The electronic control module for determining state is unlocked.
Further, step S12, the starting source that request electronic control module is stored.
In this embodiment, corresponding electronic control module is equipped with Seed(starting source)/Key(key), Seed and Key
Such as can be the digital code of 16 bits, the memory sky that the external world of electronic control module can not be directly read can be stored in
Between in, Seed and Key have specific one-to-one relationship.After establishing communication connection as shown in Figure 1, establishes and connect with bus
The computer equipment connect can obtain its starting by the Seed of input instructions query electronic control module storage, namely request
Source.
Further, step S13, the corresponding starting source obtain key (Key) and the key are sent to electronic control module.
In this embodiment, it is based on Seed at this time, by such as DPS tool of external equipment that connects to automobile bus and corresponding
Algorithm, can produce corresponding Key, and the Key is sent to electronic control module, if it is corresponding correctly to return the Seed
Key electron control module, then electronic control module will be unlocked state.It is to be appreciated that above generate or obtain
The method specific implementation process of Key is known to art technology person, and details are not described herein.
The unlocking process to electronic control module may be implemented to step S13 by above step S11, to allow such as computer
External bus devices control electronic control module partial function, such as example can control the ignition lock state of vehicle
(Power Mode) prepares for resetting electronic control module thereafter.It should be noted that in the locking shape of electronic control module
When the locking principle difference of state, those skilled in the art can use different locks according to the introduction or enlightenment of above embodiments
Method is determined to achieve the purpose that release electronic control module.
Further, step S21, switching vehicle ignition switch state are in off state.In this embodiment, which can be with
It is total by the corresponding control instruction (Power Mode Off) of computer program end sending to automobile bus, namely by sending
The mode of line traffic control instruction realizes the switching of ignition lock state.
Further, step S22, waiting period t1.Specifically, t1 can be 4 seconds to 30 seconds, such as 8 seconds, it is preferable that
After waiting 4 seconds, the Power Mode On instruction of following steps can be retransmited, in this way, being conducive to improve computational efficiency.
Further, step S23, switching vehicle ignition switch state are in an open state.In this embodiment, similar and step
S21, the step can issue corresponding control instruction (Power Mode On) to automobile bus by computer program end,
Namely the switching (being switched to device for opening) of ignition lock state is realized by way of sending bus marco instruction.
Further, step S24, waiting period t2.Specifically, t2 can be 1 second to 5 seconds, such as 3 seconds, it is preferable that can
After waiting 1 second, to execute matching process (such as sending verifying instruction) thereafter.It should be noted that the above waiting time
The setting of section t1 and t2 can be arranged by program parameter and be realized.
Above step S21 to step S24 realizes the process that electronic control module is reset by sending control instruction, is it
The matching operation of security code afterwards is done accurately.After resetting electronic control module every time, can only to electronic control module into
Matching operation of row reenters step S21 therefore, it is necessary to reset electronic control module again after each matching operation.
Above by send bus marco instruction mode make need recycle carry out reset process become it is simple, efficient, can
Row.Other reopen and close by hand vehicle ignition switch, reconnect the modes such as vehicle accumulator to reset electronics control
Molding block is relatively infeasible.
Further, step S31 determines current temporary security code.Current temporary security code expression needs to match
The digital code of verifying, only one temporary security code will be matched and be verified as security code.With security code be 4 ten into
For number processed, obtains or one 4 decimal number of setting are as current temporary security code.In initial calculation, in the step
Suddenly the temporary security code that starting matching primitives can be set, in subsequent loop calculation, current interim safe generation
Code can automatically determine, and certainly, which can also freely change setting by stopping the method for program.
Further, step S32 sends Secure code Authentication instruction and current temporary security code to mould is controlled electronically
Block.
Further, step S33, electronic control module judge the temporary security code after receiving temporary security code
Whether matched with the security code of electronic control module storage.When being judged as mismatch, electronic control module can send negative anti-
Message is presented to computer program end, S34 is entered step, the cumulative behaviour of temporary security code is carried out to the temporary security code
Make, for example, to update the temporary security code, and return to S21 step from 1 operation is added, be next interim safe generation
The matching verifying of code is prepared；When being judged as matching, electronic control module can send positive feedback message to computer program
End, enters step S35, determines that the temporary security code is the security code of electronic control module, to calculate unique peace
Full code, computer program end will light corresponding warning light to prompt user, and terminate calculating process.
Above step S21 reruns to step S34's, can constantly match to different temporary security codes
Verifying, so as to calculate correct security code.Also, it is high-efficient.
It will be understood that flow chart above and/or block diagram and corresponding flowchart and or block diagram explanation can be by computer journey
Sequence instructs to realize.These computer program instructions can be supplied to general purpose computer, special purpose computer or other may be programmed
The processor of data processing equipment is to constitute machine, to be held by the processor of computer or other programmable data processing devices
Function/the operation specified in these the capable one or more frames of instruction creation for implementing these flowchart and or block diagrams
Component.
And it is possible to which these computer program instructions are stored in computer-readable memory, these instructions can refer to
Show that computer or other programmable processors realize function in a specific way, so as to this being stored in computer-readable memory
A little instructions constitute the function/operation instruction unit specified in one or more frames comprising implementation flow chart and/or block diagram
Make product.
And it is possible to these computer program instructions are loaded on computer or other programmable data processors so that
A series of operating procedure executes on computer or other programmable processors, to constitute computer implemented process, with
These instructions executed on computer or other programmable data processors are provided for implementing this flowchart and or block diagram
The step of functions or operations specified in one or more frames.It is further noted that in some alternative realizations, function shown in frame
Energy/operation can not be occurred by order shown in flow chart.For example, two frames successively shown actually can be essentially simultaneously
It executes or these frames can execute in reverse order sometimes, be specifically dependent upon related function/operation.
It will be understood that it can be directly connected to or couple when it is said that by component " connection " or when " coupled " to another component
To another component or may exist intermediate member.On the contrary, component " directly coupling " or " being directly connected to " are arrived when it is said that another
When a component, it is no intervening components present.
Example above primarily illustrates the calculating of the security code of vehicle electric control module of the invention.Although only to it
In some embodiments of the present invention be described, but those of ordinary skill in the art are it is to be appreciated that the present invention can be
Implement without departing from its spirit in range in many other forms.Therefore, the example shown is considered as showing with embodiment
Meaning property and not restrictive, in the case where not departing from the spirit and scope of the present invention as defined in appended claims,
The present invention may cover various modification and replacement.
Claims (9)
1. a kind of security code calculation method of vehicle electric control module, which is characterized in that comprising steps of
The electronic control module being in the lock state is unlocked；
The electronic control module is reset by sending control instruction；
Secure code Authentication instruction and current temporary security code are sent to the electronic control module；
Judge whether the temporary security code matches with the security code that the electronic control module stores；
When being judged as mismatch, the accumulation operations of temporary security code are carried out to update the interim peace to the temporary security code
Full code, and return to the resetting electronic control module step；
When being judged as matching, determine that the temporary security code is the security code of the electronic control module.
2. security code calculation method as described in claim 1, which is characterized in that the unlocked step includes:
Carry out vehicle ignition operation；
The starting source for requesting the electronic control module to be stored；And
The corresponding starting source obtains key and the key is sent to the electronic control module.
3. security code calculation method as described in claim 1, which is characterized in that the step of resetting the electronic control module
In, ignition lock state is realized in such a way that the automobile bus connected to electronic control module sends the control instruction
Switching, to reset the electronic control module.
4. security code calculation method as claimed in claim 1 or 3, which is characterized in that reset the electronic control module
Step includes:
Switching vehicle ignition switch state is in off state；
Wait first time period；
Switching vehicle ignition switch state is in an open state；And
Wait second time period.
5. security code calculation method as claimed in claim 4, which is characterized in that the first time period is 4 seconds to 30 seconds.
6. security code calculation method as claimed in claim 4, which is characterized in that the second time period is 1 second to 5 seconds.
7. security code calculation method as described in claim 1, which is characterized in that the electronic control module is security
Device and/or engine electronic control system module.
8. security code calculation method as claimed in claim 1 or 7, which is characterized in that the electronic control module connects institute
The CAN bus of vehicle is stated, and the CAN bus controls end communication by vehicle bus communication component and external computer program
Connection.
9. a kind of security code computing device of vehicle electric control module characterized by comprising
Unlocking part, the electronic control module for being used to be in the lock state are unlocked；
Component is reset, is used to reset the electronic control module by sending control instruction；And
Matching block is used to send Secure code Authentication instruction and current temporary security code to the electronic control mould
Block, and judge whether the temporary security code matches with the security code that the electronic control module stores, wherein sentencing
Break for mismatch when, to the temporary security code carry out temporary security code accumulation operations to update the temporary security code,
And it returns to the resetting component resetting electronic control module and determines the temporary security code for institute when being judged as matching
State the security code of electronic control module.
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| CN105799620B true CN105799620B (en) | 2019-01-22 |
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| CN108377193B (en) * | 2018-03-09 | 2021-06-15 | 北京汽车集团越野车有限公司 | Mileage backup method and device, vehicle and control equipment |
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| WO2008027091A1 (en) * | 2006-08-28 | 2008-03-06 | Tableau, Llc | Method and system for password recovery using a hardware accelerator |
| CN103529823A (en) * | 2013-10-17 | 2014-01-22 | 北奔重型汽车集团有限公司 | Security access control method for vehicle diagnosis system |
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