CN103178966B - The KPD authentication method of vehicle and Intelligent key, vehicle base station and system - Google Patents
The KPD authentication method of vehicle and Intelligent key, vehicle base station and system Download PDFInfo
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- CN103178966B CN103178966B CN201310088668.1A CN201310088668A CN103178966B CN 103178966 B CN103178966 B CN 103178966B CN 201310088668 A CN201310088668 A CN 201310088668A CN 103178966 B CN103178966 B CN 103178966B
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Abstract
The application provides the KPD authentication method of a kind of vehicle and Intelligent key, vehicle base station and system, and authentication method comprises: send the authentication information of scrambled to initiate authentication by low frequency to Intelligent key, starts timer; When the time of timer arrives setting-up time, send low frequency carrier signal with launch position certification by low frequency to Intelligent key; Receive the authentication result that Intelligent key is sent by high frequency, authentication result comprises the measurement result that Intelligent key obtains the field intensity that authentication information is decrypted identity authentication result and the measurement low frequency carrier signal of decoding and obtaining; According to identity authentication result and measurement result judge the identity of Intelligent key and position whether all legal, when the identity of Intelligent key and position all legal time, perform associative operation.The method that the application provides, vehicle base station and system greatly shorten the time of KPD certification, decrease in communication process the possibility occurring destabilizing factor, enhance the practicality of PEPS.
Description
Technical field
The present invention relates to PEPS technical field, particularly relate to the KPD authentication method of a kind of vehicle and Intelligent key, vehicle base station and system.
Background technology
Along with the development of science and technology and the universal of automobile, automobile is towards more and more intelligent future development, and PEPS technology becomes the important configuration of intelligent automobile comfortableness.And the KPD certification of vehicle and Intelligent key is as the key technology of PEPS, there is huge application prospect.
In prior art, the KPD verification process of vehicle and Intelligent key is: vehicle base station sends authentication information by low frequency; Intelligent key receives authentication information, and is decrypted solution code authentication to authentication information, and the authentication result obtained is sent to vehicle base station by high frequency; Vehicle base station receives high frequency authentication result, and whether parsing high frequency authentication result is legal, if legal, then sends low frequency carrier signal, initiates key position certification; Intelligent key measures low frequency carrier signal field intensity, and the measurement result of low frequency carrier signal field intensity is sent to vehicle base station; Vehicle base station resolves the measurement result of low frequency carrier signal field intensity, judges that whether the position of Intelligent key is legal, if legal, perform associative operation according to analysis result.
Inventor finds in the process realizing the invention: in prior art, and vehicle is more loaded down with trivial details with the KPD verification process of Intelligent key, consuming time longer, and, add the possibility occurring destabilizing factor in vehicle base station and Intelligent key communication process.
Summary of the invention
In view of this, the invention provides the KPD authentication method of a kind of vehicle and Intelligent key, vehicle base station and system, more loaded down with trivial details with the KPD verification process of Intelligent key in order to solve vehicle of the prior art, consuming time longer, and, add the problem occurring the possibility of destabilizing factor in vehicle base station and Intelligent key communication process, its technical scheme is as follows:
A KPD authentication method for vehicle and Intelligent key, vehicle base station arranges timer, and described method comprises:
Send the authentication information of scrambled to initiate authentication by low frequency to Intelligent key, and start described timer;
When the time of described timer arrives setting-up time, send low frequency carrier signal with launch position certification by low frequency to described Intelligent key;
Receive the authentication result that described Intelligent key is sent by high frequency, described authentication result comprises: described Intelligent key is decrypted the identity authentication result of decoding and obtaining to described authentication information, and the measurement result that the field intensity measuring described low frequency carrier signal obtains;
According to described identity authentication result and described measurement result judge the identity of described Intelligent key and position whether all legal, when the identity of described Intelligent key and position all legal time, perform associative operation.
Preferably, described timer is the timer of 1 ~ 20ms.
Wherein, described authentication information comprises: Intelligent key ID, random array, the first ciphertext and CRC check byte, described first ciphertext generates by initial data being utilized the first cryptographic algorithm encryption, and described initial data comprises: Intelligent key ID, Intelligent key key, random array and password.
Wherein, described Intelligent key is decrypted to described authentication information the process obtaining identity authentication result of decoding and comprises: judge that whether the data received are effective by the CRC check byte in described authentication information, if the data received are effective, then the first ciphertext in authentication information is decrypted by the first decipherment algorithm corresponding with described first cryptographic algorithm, obtain data decryption, data decryption is utilized the second cryptographic algorithm encryption generation second ciphertext, generate the identity authentication result comprising CRC check byte and the second ciphertext.
Wherein, whether legal process comprises to judge the identity of described Intelligent key according to described identity authentication result:
Judge that whether the data received are effective by the CRC check byte in described identity authentication result, if the data received are effective, then be decrypted by the second decipherment algorithm corresponding with the second cryptographic algorithm, obtain data decryption, data decryption and initial data are compared, if data decryption is consistent with initial data, then Intelligent key identity is legal.
Wherein, judge that the whether legal process in the position of described Intelligent key comprises according to described measurement result:
Determine the distance of described Intelligent key and vehicle base station antenna according to described measurement result, judge described distance whether in preset range, if described distance is in preset range, then the position of described Intelligent key is legal.
A kind of vehicle base station, described vehicle base station is provided with timer, and described vehicle base station comprises: the first transmitting element, start unit, the first judging unit, the second transmitting element, receiving element, the second judging unit and performance element;
Described first transmitting element, for sending the authentication information of scrambled to initiate authentication by low frequency to Intelligent key;
Described start unit, for starting described timer when described first transmitting element sends authentication information to described Intelligent key;
Described first judging unit, for judging whether the time of described timer arrives setting-up time;
Described second transmitting element, for when the time of described timer arrives setting-up time, sends low frequency carrier signal with launch position certification by low frequency to described Intelligent key;
Described receiving element, for receiving the authentication result that described Intelligent key is sent by high frequency, described authentication result comprises: described Intelligent key is decrypted the identity authentication result of decoding and obtaining to described authentication information, and the measurement result that the field intensity measuring described low frequency carrier signal obtains;
Described second judging unit, for judge according to described identity authentication result and described measurement result the identity of described Intelligent key and position whether all legal;
Described performance element, for when the identity of described Intelligent key and position all legal time, perform associative operation.
Wherein, described authentication information comprises: Intelligent key ID, random array, the first ciphertext and CRC check byte, described first ciphertext generates by initial data being utilized the first cryptographic algorithm encryption, and described initial data comprises: Intelligent key ID, Intelligent key key, random array and password.
Preferably, described timer is the timer of 1 ~ 20ms.
A KPD Verification System for vehicle and Intelligent key, comprising: vehicle base station and Intelligent key;
Described vehicle base station, for being sent the authentication information of scrambled to described Intelligent key by low frequency, and start described timer, when the time of described timer arrives setting-up time, send low frequency carrier signal with launch position certification by low frequency to described Intelligent key;
Described Intelligent key, identity authentication result is obtained for being decrypted decoding to described authentication information, and, the field intensity measuring described low frequency carrier signal obtains measurement result, described identity authentication result and measurement result are sent to described vehicle base station by high frequency, to make described vehicle base station when the identity and position of judging described Intelligent key according to described identity authentication result and described measurement result are all legal, perform associative operation.
There is in technique scheme following beneficial effect:
In the KPD authentication method of vehicle provided by the invention and Intelligent key, vehicle base station and system, in vehicle base station, timer is set, when vehicle base station sends authentication information by low frequency to Intelligent key, start timer, when the time of timer arrives setting-up time, vehicle base station sends the certification of low frequency carrier signal launch position by low frequency to Intelligent key, and need not as prior art, vehicle base station, after receiving the identity authentication result that Intelligent key sent by high frequency, just sends the certification of low frequency carrier signal launch position to Intelligent key.Compared with KPD authentication method of the prior art, The present invention reduces a high frequency communications process, and the judgement of vehicle base station to identity authentication result and measurement result is placed on a process, the very big like this authenticated time shortening KPD, decrease in communication process the possibility occurring destabilizing factor, and, easier in setting-up time authentication success, realize unlocking doors fast, start the operations such as vehicle, enhance the practicality of PEPS.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The schematic flow sheet of the KPD authentication method of the vehicle that Fig. 1 provides for the embodiment of the present invention one and Intelligent key;
The schematic flow sheet of the KPD authentication method of the vehicle that Fig. 2 provides for the embodiment of the present invention two and Intelligent key;
The structural representation of the vehicle base station that Fig. 3 provides for the embodiment of the present invention three;
The structural representation of the vehicle base station that Fig. 4 provides for the embodiment of the present invention four;
The structural representation of the KPD Verification System of the vehicle that Fig. 5 provides for the embodiment of the present invention five and Intelligent key;
The KPD Verification System of the vehicle that Fig. 6 provides for the embodiment of the present invention five and Intelligent key realizes the schematic flow sheet of KPD certification.
Embodiment
For the purpose of quoting and know, the explanation of the technical term hereinafter used, write a Chinese character in simplified form or abridge and be summarized as follows:
PEPS:Passive entry & push start systems enters and start up system without key
KPD:Key Position Detection key position detects
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment one
The embodiment of the present invention one provides the KPD authentication method of a kind of vehicle and Intelligent key, and the vehicle base station corresponding with Intelligent key is provided with timer, and Fig. 1 shows the schematic flow sheet of the method, and the method can comprise:
S101: the authentication information being sent scrambled by low frequency to Intelligent key, and start timer.
S102: judge whether the time of timer arrives setting-up time, when the time of timer arrives setting-up time, proceeds to step S103; Otherwise, do not perform any operation.
S103: send low frequency carrier signal with to the certification of Intelligent key launch position to Intelligent key by low frequency.
S104: receive the authentication result that Intelligent key is sent by high frequency, wherein, authentication result comprises: Intelligent key is decrypted the identity authentication result of decoding and obtaining to authentication information, and the measurement result that the field intensity measuring low frequency carrier signal obtains.
S105: according to identity authentication result and measurement result judge the identity of Intelligent key and position whether all legal, when the identity of Intelligent key and position all legal time, perform step S106; Otherwise, do not perform any operation.
S106: perform associative operation, such as: unlocking doors, startup vehicle etc.
In the KPD authentication method of the vehicle that the embodiment of the present invention one provides and Intelligent key, vehicle base station is provided with timer, when vehicle base station sends authentication information by low frequency to Intelligent key, start timer, when the time of timer arrives setting-up time, vehicle base station sends the certification of low frequency carrier signal launch position by low frequency to Intelligent key, and need not as prior art, vehicle base station, after receiving the identity authentication result that Intelligent key sent by high frequency, just sends the certification of low frequency carrier signal launch position to Intelligent key.Compared with KPD authentication method of the prior art, the embodiment of the present invention decreases a high frequency communications process, and, the judgement of vehicle base station to identity authentication result and measurement result is placed on a process, and the very big like this authenticated time shortening KPD, decreases in communication process the possibility occurring destabilizing factor, and, easier in setting-up time authentication success, realize unlocking doors fast, start the operation such as vehicle, enhance the practicality of PEPS.
Embodiment two
The embodiment of the present invention two provides the KPD authentication method of a kind of vehicle and Intelligent key, and the vehicle base station corresponding with Intelligent key is provided with timer, and Fig. 2 shows the schematic flow sheet of the method, and the method can comprise:
S201: the authentication information being sent scrambled by low frequency to Intelligent key, and start timer.
Wherein, the authentication information that vehicle base station is sent to Intelligent key by low frequency can comprise: heading, the first data and message trailer.First data comprise: Intelligent key ID, random array, the first ciphertext and CRC check byte.First ciphertext is that vehicle base station generates by initial data being utilized the first cryptographic algorithm encryption, and wherein, initial data comprises: Intelligent key ID, Intelligent key key SK, random array and password.
S202: judge whether the time of timer arrives setting-up time, when the time of timer arrives setting-up time, proceeds to step S203; Otherwise, do not perform any operation.
Wherein, the timer in the present embodiment is preferably the timer of 2ms, and the setting-up time namely in step S102 can be 2ms.The present embodiment does not limit setting-up time can 2ms, and setting-up time can set as the case may be.
S203: send low frequency carrier signal with to the certification of Intelligent key launch position to Intelligent key by low frequency.
Wherein, the low frequency carrier signal in the present embodiment can be sinusoidal wave.
S204: receive the authentication result that Intelligent key is sent by high frequency, wherein, authentication result comprises: Intelligent key is decrypted the identity authentication result of decoding and obtaining to authentication information, and the measurement result that the field intensity measuring low frequency carrier signal obtains.
Wherein, after Intelligent key receives authentication information, judge that whether the data received are effective by CRC check byte, if the data received are effective, then the first ciphertext in the first data in authentication information is decrypted by the first decipherment algorithm corresponding with the first cryptographic algorithm, obtain deciphering logarithmic data, i.e. Intelligent key ID, Intelligent key key SK, random array and password, then data decryption is utilized the second cryptographic algorithm encryption generation second ciphertext, again identity authentication result is sent to vehicle base station by high frequency, wherein, identity authentication result comprises: heading, second data and message trailer, second data comprise: Intelligent key ID, random array, second ciphertext and CRC check byte.
S205: according to identity authentication result and measurement result judge the identity of Intelligent key and position whether all legal, when the identity of Intelligent key and position all legal time, perform step S206; Otherwise, do not perform any operation.
After vehicle base station receives identity authentication result, judge that whether the data received are effective by the CRC check byte in identity authentication result, if the data received are effective, then be decrypted by the second decipherment algorithm corresponding with the second cryptographic algorithm, obtain data decryption, data decryption and initial data are compared, if data decryption is consistent with initial data, then Intelligent key identity is legal.
After vehicle base station receives the measurement result of the field intensity of low frequency carrier signal, according to the distance of measurement result determination Intelligent key and vehicle base station antenna, if distance is in preset range, then show that the position of Intelligent key is legal.Wherein, preset range can but be not defined as with the scope of certain car door circumference n rice that is the center of circle.
It should be noted that, the high frequency communications time is generally at 20 ~ 60ms, and in order to save authenticated time, in the present embodiment, the setting-up time of timer is less than 20ms.
S206: perform associative operation, such as: unlocking doors, startup vehicle etc.
In the KPD authentication method of the vehicle that the embodiment of the present invention two provides and Intelligent key, vehicle base station is provided with timer, when vehicle base station sends authentication information by low frequency to Intelligent key, start timer, when the time of timer arrives setting-up time, vehicle base station sends the certification of low frequency carrier signal launch position by low frequency to Intelligent key, and need not as prior art, vehicle base station, after receiving the identity authentication result that Intelligent key sent by high frequency, just sends the certification of low frequency carrier signal launch position to Intelligent key.Compared with KPD authentication method of the prior art, the embodiment of the present invention decreases a high frequency communications process, and the judgement of vehicle base station to identity authentication result and measurement result is placed on a process, the very big like this authenticated time shortening KPD, decrease in communication process the possibility occurring destabilizing factor, and, easier in setting-up time authentication success, realize unlocking doors fast, start the operations such as vehicle, enhance the practicality of PEPS.
Embodiment three
The embodiment of the present invention three provides a kind of vehicle base station, this vehicle base station is provided with timer, Fig. 3 shows the structural representation of this vehicle base station, and this vehicle base station can comprise: the first transmitting element 101, start unit 102, first judging unit 103, second transmitting element 104, receiving element 105, second judging unit 106 and performance element 107.Wherein:
First transmitting element 101, for sending the authentication information of scrambled to initiate authentication by low frequency to Intelligent key.
Start unit 102, for starting timer when the first transmitting element 101 sends authentication information to Intelligent key.
First judging unit 103, for judging whether the time of timer arrives setting-up time.
Second transmitting element 104, for when the time of timer arrives setting-up time, sends low frequency carrier signal with launch position certification by low frequency to Intelligent key.
Receiving element 105, for receiving the authentication result that Intelligent key is sent by high frequency, authentication result comprises: Intelligent key is decrypted the identity authentication result of decoding and obtaining to authentication information, and the measurement result that the field intensity measuring low frequency carrier signal obtains.
Second judging unit 106, whether all legal for the identity and position judging Intelligent key according to identity authentication result and measurement result.
Performance element 107, for when the identity of Intelligent key and position all legal time, perform associative operation.
The vehicle base station that the embodiment of the present invention three provides is provided with timer, when vehicle base station sends authentication information by low frequency to Intelligent key, start timer, when the time of timer arrives setting-up time, vehicle base station sends the certification of low frequency carrier signal launch position by low frequency to Intelligent key, and need not as prior art, vehicle base station, after receiving the identity authentication result that Intelligent key sent by high frequency, just sends the certification of low frequency carrier signal launch position to Intelligent key.Compared with prior art, the vehicle base station that the embodiment of the present invention three provides makes KPD verification process decrease a high frequency communications process, and the judgement of vehicle base station to identity authentication result and measurement result is placed on a process, the very big like this authenticated time shortening KPD, decrease in communication process the possibility occurring destabilizing factor, and, easier in setting-up time authentication success, realize unlocking doors fast, start the operations such as vehicle, enhance the practicality of PEPS.
Embodiment four
The embodiment of the present invention four provides a kind of vehicle base station, this vehicle base station is provided with timer, Fig. 4 shows the structural representation of this vehicle base station, and this vehicle base station can comprise: the first transmitting element 201, start unit 202, first judging unit 203, second transmitting element 204, receiving element 205, second judging unit 206 and performance element 207.Wherein:
First transmitting element 201, for sending the authentication information of scrambled to initiate authentication by low frequency to Intelligent key.Further, first transmitting element 201 comprises: encryption sub-unit operable 2011 and transmission subelement 2012, wherein, encryption sub-unit operable 2011, for initial data being utilized the first cryptographic algorithm encryption generation first ciphertext, send subelement 2012, for the authentication information comprising the first ciphertext is sent to Intelligent key, authentication information, except comprising the first ciphertext, also comprises Intelligent key ID, random array and CRC check byte.
Start unit 202, for starting timer when the first transmitting element 201 sends authentication information to Intelligent key.
First judging unit 203, for judging whether the time of timer arrives setting-up time.
Second transmitting element 204, for when the time of timer arrives setting-up time, sends low frequency carrier signal with launch position certification by low frequency to Intelligent key.Wherein, the setting-up time of timer is less than 20ms, is preferably 2ms.
After Intelligent key receives authentication information, judge that whether the data received are effective by CRC check byte, if the data received are effective, then the first ciphertext in the first data in authentication information is decrypted by the first decipherment algorithm corresponding with the first cryptographic algorithm, obtain deciphering logarithmic data, i.e. Intelligent key ID, Intelligent key key SK, random array and password, then data decryption is utilized the second cryptographic algorithm encryption generation second ciphertext, again identity authentication result is sent to vehicle base station by high frequency, wherein, identity authentication result comprises: heading, second data and message trailer, second data comprise: Intelligent key ID, random array, second ciphertext and CRC check byte.
Receiving element 205, for receiving the authentication result that Intelligent key is sent by high frequency, authentication result comprises: Intelligent key is decrypted the identity authentication result of decoding and obtaining to authentication information, and the measurement result that the field intensity measuring low frequency carrier signal obtains.
Second judging unit 206, whether all legal for the identity and position judging Intelligent key according to identity authentication result and measurement result.Further, the second judging unit 206 comprises: the first judgment sub-unit 2061, deciphering subelement 2062, second judgment sub-unit 2063, determine subelement 2064 and the 3rd judgment sub-unit 2065.First judgment sub-unit 2061, for judging that the CRC check byte in identity authentication result judges that whether the data received are effective, deciphering subelement 2062, for when the data received are effective, be decrypted by the second decipherment algorithm corresponding with the second cryptographic algorithm, obtain data decryption, the second judgment sub-unit 2063, for judging that whether data decryption is consistent with initial data, if consistent, show that the identity of Intelligent key is legal.Determine subelement 2064, for the distance according to measurement result determination Intelligent key and vehicle base station antenna; 3rd judgment sub-unit 2065, for judging that whether the distance of Intelligent key and vehicle base station antenna is in preset range, if in preset range, then show that the position of Intelligent key is legal, wherein, preset range can be with the scope of certain car door circumference n rice that is the center of circle.
Performance element 207, for when the identity of Intelligent key and position all legal time, perform associative operation.
The vehicle base station that the embodiment of the present invention four provides is provided with timer, when vehicle base station sends authentication information by low frequency to Intelligent key, start timer, when the time of timer arrives setting-up time, vehicle base station sends the certification of low frequency carrier signal launch position by low frequency to Intelligent key, and need not as prior art, vehicle base station, after receiving the identity authentication result that Intelligent key sent by high frequency, just sends the certification of low frequency carrier signal launch position to Intelligent key.Compared with prior art, the vehicle base station that the present embodiment provides makes KPD verification process decrease a high frequency communications process, and the judgement of vehicle base station to identity authentication result and measurement result is placed on a process, the very big like this authenticated time shortening KPD, decrease in communication process the possibility occurring destabilizing factor, and, easier in setting-up time authentication success, realize unlocking doors fast, start the operations such as vehicle, enhance the practicality of PEPS.
Embodiment five
The embodiment of the present invention five provides the KPD Verification System of a kind of vehicle and Intelligent key, and Fig. 5 shows the structural representation of this system, and this system can comprise: vehicle base station 1 and Intelligent key 2.
The system that Fig. 6 shows the embodiment of the present invention five to be provided realizes the process of KPD certification:
Vehicle base station 1 sends the authentication information of scrambled to Intelligent key 2 by low frequency, and start timer, when the time of timer arrives setting-up time, sends low frequency carrier signal with launch position certification by low frequency to Intelligent key 2.
Intelligent key 2 is when receiving authentication information, decoding is decrypted to authentication information and obtains identity authentication result, and, when receiving low frequency carrier signal, the field intensity measuring low frequency carrier signal obtains measurement result, and identity authentication result and measurement result are sent to vehicle base station 1 by high frequency.
Vehicle base station 1 according to identity authentication result and measurement result judge the identity of Intelligent key 2 and position whether all legal, when the identity of Intelligent key 2 and position all legal time, perform associative operation.
The KPD Verification System of the vehicle that the embodiment of the present invention five provides and Intelligent key, in vehicle base station, timer is set, when vehicle base station sends authentication information by low frequency to Intelligent key, start timer, when the time of timer arrives setting-up time, vehicle base station sends the certification of low frequency carrier signal launch position by low frequency to Intelligent key, and need not as prior art, vehicle base station, after receiving the identity authentication result that Intelligent key sent by high frequency, just sends the certification of low frequency carrier signal launch position to Intelligent key.Compared with prior art, the system that the embodiment of the present invention provides makes KPD verification process decrease a high frequency communications process, and the judgement of vehicle base station to identity authentication result and measurement result is placed on a process, the very big like this authenticated time shortening KPD, decrease in communication process the possibility occurring destabilizing factor, and, easier in setting-up time authentication success, realize unlocking doors fast, start the operations such as vehicle, enhance the practicality of PEPS.
For convenience of description, various unit is divided into describe respectively with function when describing above device.Certainly, the function of each unit can be realized in same or multiple software and/or hardware when implementing of the present invention.
As seen through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add required general hardware platform by software and realizes.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product can be stored in storage medium, as ROM/RAM, magnetic disc, CD etc., comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform the method described in some part of each embodiment of the present invention or embodiment.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, between each embodiment identical similar part mutually see, what each embodiment stressed is the difference with other embodiments.Especially, for system embodiment, because it is substantially similar to embodiment of the method, so describe fairly simple, relevant part illustrates see the part of embodiment of the method.System embodiment described above is only schematic, the wherein said unit illustrated as separating component or can may not be and physically separates, parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of module wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.Those of ordinary skill in the art, when not paying creative work, are namely appreciated that and implement.
The present invention can be used in numerous general or special purpose computing system environment or configuration.Such as: personal computer, server computer, handheld device or portable set, laptop device, multicomputer system, system, set top box, programmable consumer-elcetronics devices, network PC, minicom, mainframe computer, the distributed computing environment (DCE) comprising above any system or equipment etc. based on microprocessor.
The present invention can describe in the general context of computer executable instructions, such as program module.Usually, program module comprises the routine, program, object, assembly, data structure etc. that perform particular task or realize particular abstract data type.Also can put into practice the present invention in a distributed computing environment, in these distributed computing environment (DCE), be executed the task by the remote processing devices be connected by communication network.In a distributed computing environment, program module can be arranged in the local and remote computer-readable storage medium comprising memory device.
It should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a KPD authentication method for vehicle and Intelligent key, it is characterized in that, vehicle base station arranges timer, and described method comprises:
Send the authentication information of scrambled to initiate authentication by low frequency to Intelligent key, and start described timer;
When the time of described timer arrives setting-up time, send low frequency carrier signal with launch position certification by low frequency to described Intelligent key;
Receive the authentication result that described Intelligent key is sent by high frequency, described authentication result comprises: described Intelligent key is decrypted the identity authentication result of decoding and obtaining to described authentication information, and the measurement result that the field intensity measuring described low frequency carrier signal obtains;
According to described identity authentication result and described measurement result judge the identity of described Intelligent key and position whether all legal, when the identity of described Intelligent key and position all legal time, perform associative operation.
2. method according to claim 1, is characterized in that, described timer is the timer of 1 ~ 20ms.
3. method according to claim 1, it is characterized in that, described authentication information comprises: Intelligent key ID, random array, the first ciphertext and CRC check byte, described first ciphertext generates by initial data being utilized the first cryptographic algorithm encryption, and described initial data comprises: Intelligent key ID, Intelligent key key, random array and password.
4. method according to claim 3, is characterized in that, described Intelligent key is decrypted to described authentication information the process obtaining identity authentication result of decoding and comprises:
Judge that whether the data received are effective by the CRC check byte in described authentication information, if the data received are effective, then the first ciphertext in authentication information is decrypted by the first decipherment algorithm corresponding with described first cryptographic algorithm, obtain data decryption, data decryption is utilized the second cryptographic algorithm encryption generation second ciphertext, generate the identity authentication result comprising CRC check byte and the second ciphertext.
5. method according to claim 4, is characterized in that, whether legal process comprises to judge the identity of described Intelligent key according to described identity authentication result:
Judge that whether the data received are effective by the CRC check byte in described identity authentication result, if the data received are effective, then be decrypted by the second decipherment algorithm corresponding with the second cryptographic algorithm, obtain data decryption, data decryption and initial data are compared, if data decryption is consistent with initial data, then Intelligent key identity is legal.
6. method according to claim 1, is characterized in that, judges that the whether legal process in the position of described Intelligent key comprises according to described measurement result:
Determine the distance of described Intelligent key and vehicle base station antenna according to described measurement result, judge described distance whether in preset range, if described distance is in preset range, then the position of described Intelligent key is legal.
7. a vehicle base station, is characterized in that, described vehicle base station is provided with timer, and described vehicle base station comprises: the first transmitting element, start unit, the first judging unit, the second transmitting element, receiving element, the second judging unit and performance element;
Described first transmitting element, for sending the authentication information of scrambled to initiate authentication by low frequency to Intelligent key;
Described start unit, for starting described timer when described first transmitting element sends authentication information to described Intelligent key;
Described first judging unit, for judging whether the time of described timer arrives setting-up time;
Described second transmitting element, for when the time of described timer arrives setting-up time, sends low frequency carrier signal with launch position certification by low frequency to described Intelligent key;
Described receiving element, for receiving the authentication result that described Intelligent key is sent by high frequency, described authentication result comprises: described Intelligent key is decrypted the identity authentication result of decoding and obtaining to described authentication information, and the measurement result that the field intensity measuring described low frequency carrier signal obtains;
Described second judging unit, for judge according to described identity authentication result and described measurement result the identity of described Intelligent key and position whether all legal;
Described performance element, for when the identity of described Intelligent key and position all legal time, perform associative operation.
8. vehicle base station according to claim 7, it is characterized in that, described authentication information comprises: Intelligent key ID, random array, the first ciphertext and CRC check byte, described first ciphertext generates by initial data being utilized the first cryptographic algorithm encryption, and described initial data comprises: Intelligent key ID, Intelligent key key, random array and password.
9. vehicle base station according to claim 7, is characterized in that, described timer is the timer of 1 ~ 20ms.
10. a KPD Verification System for vehicle and Intelligent key, is characterized in that, comprising: vehicle base station and Intelligent key;
Described vehicle base station, for being sent the authentication information of scrambled to described Intelligent key by low frequency, and start timer, when the time of described timer arrives setting-up time, send low frequency carrier signal with launch position certification by low frequency to described Intelligent key;
Described Intelligent key, identity authentication result is obtained for being decrypted decoding to described authentication information, and, the field intensity measuring described low frequency carrier signal obtains measurement result, described identity authentication result and measurement result are sent to described vehicle base station by high frequency, to make described vehicle base station when the identity and position of judging described Intelligent key according to described identity authentication result and described measurement result are all legal, perform associative operation.
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Correction item: Patentee|Address Correct: Tianjin Jingwei Hengrun Technology Co., Ltd.|300000 Tianjin Saida Xiqing economic and Technological Development Zone International Industrial City, C6-1, C6-2, C7-1 False: Tianjin Jingwei Hengrun Technology Co., Ltd.|300000 Tianjin Saida Xiqing economic and Technological Development Zone International Industrial City, C6-1, C6-2, C7-1 Number: 04 Volume: 33 |