CN206551993U - A kind of PKE automobile encrypted antitheft systems based on quantum key card - Google Patents
A kind of PKE automobile encrypted antitheft systems based on quantum key card Download PDFInfo
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- CN206551993U CN206551993U CN201720245363.0U CN201720245363U CN206551993U CN 206551993 U CN206551993 U CN 206551993U CN 201720245363 U CN201720245363 U CN 201720245363U CN 206551993 U CN206551993 U CN 206551993U
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Abstract
The utility model discloses a kind of PKE automobile encrypted antitheft systems based on quantum key card, including the transponder in car key and installing in the base station in automobile, it is characterized in that, also include respectively with the transponder and the quantum key card of base station matches, the transponder obtains dynamic key crypto identity information from the quantum key card matched, and the base station obtains dynamic key from the quantum key card matched and the identity information from transponder is decrypted.The identity information of interaction between base station and transponder is encrypted using the dynamic key of truly random formation in PKE automobile encrypted antitheft systems of the present utility model based on quantum key card, dynamic key is generated using the key seed and random parameter that regularly update, to reduce the association between dynamic key, the security of PKE automobile encrypted antitheft systems is substantially increased.
Description
Technical field
The utility model is related to road vehicle component, and in particular to a kind of PKE automobiles encryption based on quantum key card
Burglary-resisting system.
Background technology
With the increasingly mature of automotive telematics technology and widely use, safe antitheft of the people to automobile in life
Higher and higher requirement is proposed with property easy to use.Keyless door guard system (PKE) can not only realize it is long-range seek car function, it is remote
Cheng Kaisuo locking functions, can also realize that exempting from operation unlocking locks, its with the advantage such as security, comfortableness and personalized designs into
The focus paid close attention to and studied for each automobile production manufacturer.
In the various AESs that keyless door guard system (PKE) is used, aes algorithm with anti-attack ability it is strong, be easy to it is soft
Part is realized, has very big application space without the advantage that patent protection is limited.Such as Patent No. CN201410779050《One
Plant the anti-method for interception of radiofrequency signal of automobile key remote control system》Described in, encryption equipment and decipher are calculated using DES algorithms, AES
Method or HITAG3 algorithms are encrypted or decrypted；Number of patent application is CN201510221253《A kind of compound PKE automobiles encryption is anti-
Theft system》Described in using AES-128CCM AESs produce one encryption rolling code instruction.
Because the initial key of aes algorithm solidifies in the chips, so there is the risk of password leakage, prior art passes through
Carry out computing to update and replace dynamic key with the synchronous code of continuous renewal on the basis of initial key, lacked with making up this
Point.This causes the dynamic key relevance between front and rear double probate larger, reduces the security of dynamic key.Therefore design one
Plant independent of synchronous code to generate the PKE automobile encrypted antitheft systems of dynamic key, the raising to future automobile security is just outstanding
For necessity.
The authentication procedures of the existing automobile no-key gate control system based on AES encryption algorithm, dynamic key is used
Fixed initial key, its synchronous code numerical value of change property dependent on the limited digit of XOR on the basis of initial key, is caused
Dynamic key relevance between front and rear double probate is larger, and security is low.
Utility model content
In view of the shortcomings of the prior art, the utility model provides a kind of PKE automobiles encryption based on quantum key card and prevented
Theft system.
A kind of PKE automobile encrypted antitheft systems based on quantum key card, including transponder in car key and
Install in the base station in automobile, in addition to respectively with the transponder and the quantum key card of base station matches, the transponder
Dynamic key crypto identity information is obtained from the quantum key card matched, the base station is from the quantum key card matched
Dynamic key is obtained the identity information from transponder is decrypted.
Key generating device is provided with the quantum key card of the transponder and base station matches, for according to the amount of being pre-stored in
The true random number generation dynamic key of sub-key card.
Preferably, the true random number is quantum true random number.
It is described to answer to ensure that transponder and base station obtain identical dynamic key in same authentication operating process
It is identical with the true random number prestored in the quantum key card of base station matches to answer device, and key generating device is identical.
Using true random number as close during true random number formation dynamic key of the key generating device in quantum key card
Key seed, then generates corresponding dynamic key according to built-in key schedule.
The amount of the storable true random number of quantum key card, and the size of key seed need setting according to user.
It should be noted that the utility model key generating device is identical, it is thus understood that key is given birth in transponder and base station
The key schedule used into device is identical, to ensure the key of transponder and base station employed in an encryption process
It is identical.
Described transponder includes data-interface and encrypting module, and the quantum that the data-interface matches for connecting is close
Key card, the encrypting module is added for obtaining dynamic key from the quantum key card matched by the data-interface
It is close.
Described base station includes data-interface and deciphering module, and the data-interface is used to connect the quantum key matched
Card, the deciphering module is decrypted for obtaining dynamic key from quantum key card by the data-interface.
Deciphering module in the transponder encrypting module and the base station matches.
It should be noted that the deciphering module in transponder encrypting module and the base station matches it will be appreciated that response
In the AES and deciphering module built in encrypting module in device built-in decipherment algorithm match, i.e., through in transponder
Encrypting module encryption after identity information, can smoothly be decrypted in a base station.
Preferably, alarm module is equipped with the transponder and base station, for the true random number in quantum key card
Amount be less than default lowest threshold when carry out alarm.The lowest threshold can be adjusted according to practical situations.
Further preferably, it is arranged with a shell, the shell and is additionally provided with for installing quantum key outside the transponder
The installation position of card.In use, the quantum key card that transponder is matched is installed in the installation position, and ensure in quantum key card
Correctly install when installation position, quantum key card can successfully dock with the data-interface of transponder and realize data transfer.
Compared with existing PKE automobiles encrypted antitheft system, the PKE automobiles encryption of the present utility model based on quantum key card
The identity information of interaction between base station and transponder is carried out plus solution using the dynamic key of true random number formation in burglary-resisting system
It is close, dynamic key is generated using the key seed and random parameter that regularly update, to reduce the association between dynamic key, significantly
Improve the security of PKE automobile encrypted antitheft systems.
Brief description of the drawings
Fig. 1 is the structural representation of the PKE automobile encrypted antitheft systems based on quantum key card of the present embodiment；
Fig. 2 is the flow chart of generation dynamic key method；
Fig. 3 for the present embodiment the PKE automobile encrypted antitheft systems based on quantum key card in transponder structured flowchart；
Fig. 4 for the present embodiment the PKE automobile encrypted antitheft systems based on quantum key card in base station structured flowchart；
Fig. 5 is the data encapsulation flow chart that transponder sends high frequency response message；
Fig. 6 is the workflow diagram of transponder in authentication procedures；
Fig. 7 is the workflow diagram of base station in authentication procedures.
Embodiment
The utility model is described further below with reference to the drawings and specific embodiments.
As shown in figure 1, the PKE automobile encrypted antithefts system based on quantum key card of the present embodiment includes being arranged on car key
Spoon in transponder and install in the base station in automobile, in addition to respectively with the transponder and the quantum key of base station matches
Card, transponder obtains dynamic key crypto identity information from the quantum key card matched, and base station is close from the quantum matched
Dynamic key is obtained in key card the identity information from transponder is decrypted.
Key generating device is provided with the quantum key card of transponder and base station matches, for according in quantum key card
The true random number generation dynamic key prestored.
In the present embodiment, the true random number prestored in quantum key card is divided into several key seeds, key generating device
Dynamic key is generated according to key seed.When implementing, during key generating device generation dynamic key, in addition it is also necessary to which random number is joined
Number.Key seed, true random number key generation mark and key schedule life of the key generating device in memory module
Generated once into finite number of time (specific number of times is determined by security requirement, the length of key seed and key schedule)
The dynamic key used when the one true random number key become is as final encryption.
The quantum key generating means of the present embodiment safeguard true random number key generation mark, close by the true random number
Key generation mark is used as the pointer and required random number parameter of the true random number of key seed when providing each authentication
Deng.
The method of the quantum key generating means generation dynamic key of the present embodiment is as shown in Fig. 2 first according to truly random
Number keys generation mark, calls corresponding true random number key seed (i.e. key seed), and with identify in the random number that includes
Parameter together substitutes into key schedule, and computing draws the dynamic key needed for this certification.It is continuous due to random number parameter
Change, and true random number key seed renewal on schedule, true random number key is substantially the dynamic key of one time one change, and dynamic
There is relatively low relevance between state key.
The true random number prestored in quantum key card comes from the quantum service station in quantum communication network, by from quantum
Download and obtain in service station.Quantum service station is the communication node of quantum network, and quantum is used as generation and application true random number
Key, includes quantum key distribution terminal, quantum random number generator and supporting communication and management equipment, quantum key distribution
Terminal produces the quantum key of share in different areas, for secure communication of the two places based on quantum key；Quantum random number generator is produced
The raw true random number for being available for local mobile terminal to download and use, for the data that safe class is slightly lower or required size of key is huge
Encryption process.
The PKE automobile encrypted antitheft systems based on quantum key card of the present embodiment are using preceding needing quantum communications net
Two tensor sub-key cards are applied in quantum service station in network, and are matched respectively with base station and transponder binding.
As shown in figure 3, transponder includes transponder microcontroller, and keyboard, the electricity being connected with transponder microcontroller
Source, low frequency reception unit, high-frequency emission unit.In the present embodiment, the transponder microcontroller in transponder is provided with data-interface
And encrypting module, data-interface is for connecting the quantum key card matched, and encrypting module is for passing through data-interface from quantum
Obtained in key card after dynamic key is encrypted to the information (i.e. high frequency response message) for being sent to base station by high frequency transmitting element
It is sent to base station.
As shown in figure 4, base station includes high frequency in the PKE automobile encrypted antitheft systems based on quantum key card of the present embodiment
Receiving unit, low frequencies unit, base station microcontroller, power supply, CAN interface, wherein, high-frequency reception unit, low frequency hair
Penetrate unit, power supply, CAN interface to be connected with base station microcontroller respectively, CAN interface passes through CAN channel and vapour
Car associated control modules connect, to realize being in communication with each other between base station and automobile associated control modules, reach control automobile locking,
Unlock, seek the purposes such as car.Further, in base station base station microcontroller include data-interface and deciphering module, data-interface use
The quantum key card matched in connection, deciphering module is used to obtain dynamic close from quantum key card by the data-interface
Identity information from transponder is decrypted key.
To ensure that the information of interaction between transponder and base station can be decrypted by other side, the encrypting module in transponder is adopted
The decipherment algorithm that deciphering module in AES and base station is used needs to be mutually matched, and requires the key of use
(i.e. dynamic key) is identical.Further, in addition it is also necessary to respectively with prestored in the quantum key card of transponder and base station matches it is true
Random number (i.e. key seed) is identical, and key generating device is identical.
It should be noted that in the encrypted antitheft system (i.e. PKE automobiles encrypted antitheft system) of the present embodiment, with transponder
Or between the quantum key card of base station matches and transponder or base station be pluggable communication connection.In use, can insert
It is connected in data-interface, realizes communication；When not in use, it can disconnect.
Key generation is solidificated in due to generating the key schedule of dynamic key according to key seed and random number parameter
In device, therefore, the service life that each key seed is set to improve security, in the present embodiment (uses frequency table more
Show), the key seed is then abandoned after service life is reached.
The service life of key seed can be adjusted without particular/special requirement according to application security demand etc. in the present embodiment.
The true random number in quantum key card can be reduced constantly in use.When the amount of storage of true random number is inadequate
When, dynamic key just can not be normally generated to be encrypted or decrypt.Therefore, when implementing, by transponder and base
Station is provided with alarm module, and the amount for the true random number in quantum key card is alarmed when being less than default lowest threshold
Prompting.When car owner receives alarm, quantum key card is removed from base station and transponder, and it is true to quantum service station download quantum
Random number as storage inside true random number.
In the present embodiment, alarm module includes indicator lamp, by the lighting effects of indicator lamp by alarm to user
(car owner).In transponder, the indicator lamp is connected with transponder microcontroller, and transponder microprocessor is obtained in quantum key card
Remaining true random number amount, and control signal is sent to instruction according to comparative result after being compared with default lowest threshold
Lamp；In a base station, the indicator lamp is connected with base station microcontroller, and it is identical with transponder to implement process, is analogized.
Because key seed after the access times threshold value for reaching setting using that can abandon, therefore, in use, quantum
Key seed in key card can be gradually decreased, and dynamic key is generation, now the microcontroller in transponder and base station
What is monitored should be the amount for enjoying key seed in quantum key card, when the amount of key seed is less than default lowest threshold, lead to
Cross indicator light alarm.
It should be noted that the corresponding lowest threshold of key seed is without particular/special requirement, according to practical application security need
Ask etc. and to set.
In the utility model, transponder and base station are to correspond to local mobile terminal, and quantum random number generator is produced
True random number key seed store into quantum key card, for generate one time one change true random number key, for response
The information encryption process of authentication between device and base station is used.
The installation position being additionally provided with a shell, shell for installing quantum key card is arranged with outside transponder.Quantum key
Card and transponder are arranged in shell, and quantum key card has mobility relative to transponder.
It should be noted that transponder and base station internal memory contain identical key number ID, automobile ID, vendor code and low frequency
Wake-up sequence.
The PKE automobile encrypted antithefts system of the present embodiment supports unidirectional or two-way two kinds of certification modes, as shown in figure 1,
During unilateral authentication, car owner by the keyboard trigger command of transponder, as above locking key, solving locking key, seek car key etc., transponder hair
Send the high frequency response message encrypted by dynamic key to base station, ciphertext decryption and authentication by rear, are performed correlation by base station
Order；In mutual authentication process, base station is initially in resting state, constantly outwards launches low frequency interrogation signal, when matching
Transponder be waken up when entering range of receiving (key number ID that the transponder of matching refers to store in the base station and transponder,
Automobile ID, vendor code are consistent with low frequency wake-up sequence), transponder obtains dynamic key from the quantum key card matched
High frequency response message (identity information, the command information that include transponder itself) is encrypted to base station, base station is from the quantum matched
Dynamic key is obtained in key card by ciphertext decryption and authentication by rear, related command is performed.Unilateral authentication pattern is general
Applied to remote operation, two-way authentication may be implemented between transponder and base station automobile in short range it is automatic locking, close window,
The operation such as unblock.As shown in Figure 1, most important communication process is that transponder is sent out to base station during authentication between transponder and base station
Send high frequency response message process.Fig. 5 is the data prep flow figure that transponder sends high frequency response message, prepares flow and is mainly
Data are packaged, the data structure after encapsulation is as shown in figure 5, including header, identity code, command byte, truly random key
Number generation mark, Message Authentication Code and check code, wherein, the burst of data of header to check code is high-frequency data frame, and header is used
Start to receive data message in notifying base station to prepare；Identity code is the identity identification information related with key ID to automobile ID；Life
Make byte corresponding with transponder key value, command byte is default value during low frequency wake-up；True random number key generation mark is used for
Identical true random number key seed is called in base station in quantum key card, and using identical random number parameter to pass through key
Generating algorithm calculates identical dynamic key, is used as decruption key；Message Authentication Code is base station authentication transponder identity and life
The main authority of order, there is two kinds of selections:One kind be using transponder encrypted result all as Message Authentication Code, it is another be from should
Answer and specified byte is intercepted in device encrypted result as identifying code；Check code is used for the error detection of data frame.
By taking the identity authentication protocol using 128 AES encryption algorithms as an example, simply introduce transponder data in Fig. 5 and prepare
Flow.Transponder microcontroller extracts identity code and command byte, is expanded to the data of 128 as be-encrypted data,
Quantum key card generates marker extraction true random number key seed according to true random number key, and it is given birth to true random number key
Enter key schedule into the random number parameter in mark together generation, produce 128 true random number keys needed for this certification,
Aes algorithm is encrypted to form close using this 128 true random number keys to above-mentioned 128 be-encrypted datas in microcontroller
Text, intercepts 64 data as Message Authentication Code, transponder is sending data using high frequency transmitting element from the ciphertext of generation
During by header, identity code, command byte, true random number key generation mark, Message Authentication Code and check code together group
Into communications data frame, high frequency response message is launched by pulse width modulation mode.Fig. 6 is the work of transponder in authentication procedures
Flow chart.As shown in fig. 6, in order to reduce power consumption, transponder is typically in park mode, the condition for waking up transponder is：Car owner
Triggered by button, or transponder enters the range of receiving of Base Transmitter low frequency interrogation signal.When car owner should by button triggering
When answering device, the microcontroller (i.e. transponder microcontroller) in transponder reads key value, and prepares clear data；Equally, when
When the low frequency interrogation signal that transponder is sent by base station wakes up, transponder checks whether header matches and verify inquiry data frame
Legitimacy, if Header Match and inquiry data frame it is legal if transponder prepare clear data, during clear data is Fig. 5 herein
Transponder data prepares 128 Bits Expanding data of flow；If header is mismatched or inquiry data frame is illegal, transponder will
Inquiry data frame abandons and enters park mode, and wait is triggered or waken up again.Transponder calls AES encryption function to be aligned
Standby clear data is encrypted, and this process is AES encryption process in Fig. 5.Transponder is sent out by high-frequency emission unit framing
Ciphertext is sent, its data frame is serial data of the header described in Fig. 5 to check code.Transponder when high frequency response message is sent
It is again introduced into park mode.Fig. 7 is the workflow diagram of base station in authentication procedures.Base station is received by high-frequency reception unit
The high frequency reply data frame that transponder is sent, the header triggering base station of high frequency reply data frame prepares to receive data frame, base station inspection
The identity code for surveying high frequency reply data frame in whether there is, and abandons the frame if being not present and returns to state to be triggered, if in the presence of
Then base station checks its integrality to the data frame of receiving, if incomplete data frame and receive the time limit in the range of, base station after
Continuous to prepare to receive next group of high frequency response message, base station, which abandons the data frame received and entered, if time-out is received waits triggering
State.The data frame that base station checks are received is partial data, then base station microcontroller therefrom extracts ciphertext, and ciphertext is carried out
Decryption and checking.First, the true random number key generation mark in high frequency reply data frame is inputted base station by base station microcontroller
In quantum key card, the true random number key seed that base station quantum key card is included according to this true random number key generation mark refers to
Pin transfers corresponding true random number key seed, and this true random number key seed and true random number key are produced in mark
Random number parameter together inputs key schedule, and (i.e. dynamic is close with 128 true random number keys of identical in transponder for generation
Key).Base station microcontroller is carried out after Data expansion to the identity code and command byte that receive using base station quantum key card fortune
The true random number key drawn carries out AES encryption, and 64 data of interception are used as Message Authentication Code, this process and phase in Fig. 5
Close description identical.Base station microcontroller carries out Message Authentication Code contrast, and certification is no by then performing the order in high-frequency data frame
Then abandon the frame and enter state to be triggered.So far the high frequency reply data frame that base station is encrypted to true random number key is received and located
Reason is finished.
The technical solution of the utility model and beneficial effect are described in detail above-described embodiment,
It should be understood that the foregoing is only most preferred embodiment of the present utility model, the utility model is not limited to, it is all at this
Any modification, supplement and equivalent substitution made in the spirit of utility model etc., should be included in guarantor of the present utility model
Within the scope of shield.
Claims (8)
1. a kind of PKE automobile encrypted antitheft systems based on quantum key card, including transponder and peace in car key
Base station in automobile, it is characterised in that also including respectively with the transponder and the quantum key card of base station matches, institute
State transponder and obtain dynamic key crypto identity information from the quantum key card matched, the base station is from the quantum matched
Dynamic key is obtained in key card the identity information from transponder is decrypted.
2. the PKE automobile encrypted antitheft systems as claimed in claim 1 based on quantum key card, it is characterised in that described to answer
Answer in the quantum key card of device and base station matches be provided with key generating device, for according to be pre-stored in quantum key card it is true with
Machine number generates dynamic key.
3. the PKE automobile encrypted antitheft systems as claimed in claim 2 based on quantum key card, it is characterised in that described to answer
It is identical with the true random number prestored in the quantum key card of base station matches to answer device, and key generating device is identical.
4. the PKE automobile encrypted antitheft systems as claimed in claim 1 based on quantum key card, it is characterised in that described
Transponder includes data-interface and encrypting module, and the data-interface is used to connect the quantum key card matched, the encryption
Module is encrypted for obtaining dynamic key from the quantum key card matched by the data-interface.
5. the PKE automobile encrypted antitheft systems as claimed in claim 4 based on quantum key card, it is characterised in that described
Base station includes data-interface and deciphering module, and the data-interface is used to connect the quantum key card matched, the decryption mould
Block is decrypted for obtaining dynamic key from quantum key card by the data-interface.
6. the PKE automobile encrypted antitheft systems as claimed in claim 5 based on quantum key card, it is characterised in that described to answer
The deciphering module answered in device encrypting module and the base station matches.
7. the PKE automobile encrypted antitheft systems based on quantum key card as described in any one in claim 1~6, it is special
Levy and be, alarm module is equipped with the transponder and base station, in quantum key card true random number less than default
Alarm is carried out during lowest threshold.
8. the PKE automobile encrypted antitheft systems as claimed in claim 7 based on quantum key card, it is characterised in that described to answer
Answer and a shell is arranged with outside device, the installation position for installing quantum key card is additionally provided with the shell.
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| CN201720245363.0U CN206551993U (en) | 2017-03-14 | 2017-03-14 | A kind of PKE automobile encrypted antitheft systems based on quantum key card |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109995527A (en) * | 2019-04-12 | 2019-07-09 | 上海巨微集成电路有限公司 | Code key exchange method, device, host computer, slave computer and storage medium |
| CN110085036A (en) * | 2019-05-30 | 2019-08-02 | 捷德（中国）信息科技有限公司 | A kind of deck recognition methods, license plate disassembly recognition methods and electronic license plate |
| CN111127678A (en) * | 2019-11-29 | 2020-05-08 | 惠州市德赛西威汽车电子股份有限公司 | Vehicle ETC binding method and system and ETC device |
| CN111400730A (en) * | 2020-03-11 | 2020-07-10 | 西南石油大学 | AES key expansion method based on weak correlation |
| CN113950049A (en) * | 2021-09-28 | 2022-01-18 | 天翼物联科技有限公司 | Internet of things quantum security method, system, device and medium based on SIM card |
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2017
- 2017-03-14 CN CN201720245363.0U patent/CN206551993U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109995527A (en) * | 2019-04-12 | 2019-07-09 | 上海巨微集成电路有限公司 | Code key exchange method, device, host computer, slave computer and storage medium |
| CN110085036A (en) * | 2019-05-30 | 2019-08-02 | 捷德（中国）信息科技有限公司 | A kind of deck recognition methods, license plate disassembly recognition methods and electronic license plate |
| CN111127678A (en) * | 2019-11-29 | 2020-05-08 | 惠州市德赛西威汽车电子股份有限公司 | Vehicle ETC binding method and system and ETC device |
| CN111400730A (en) * | 2020-03-11 | 2020-07-10 | 西南石油大学 | AES key expansion method based on weak correlation |
| CN111400730B (en) * | 2020-03-11 | 2022-03-08 | 西南石油大学 | AES key expansion method based on weak correlation |
| CN113950049A (en) * | 2021-09-28 | 2022-01-18 | 天翼物联科技有限公司 | Internet of things quantum security method, system, device and medium based on SIM card |
| CN113950049B (en) * | 2021-09-28 | 2023-10-03 | 天翼物联科技有限公司 | Quantum security method, system, device and medium of Internet of things based on SIM card |
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