CN113347613B - Bluetooth digital key-based secure communication method and system - Google Patents
Bluetooth digital key-based secure communication method and system Download PDFInfo
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- CN113347613B CN113347613B CN202110403027.5A CN202110403027A CN113347613B CN 113347613 B CN113347613 B CN 113347613B CN 202110403027 A CN202110403027 A CN 202110403027A CN 113347613 B CN113347613 B CN 113347613B
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- 238000000034 method Methods 0.000 title claims abstract description 54
- 238000012795 verification Methods 0.000 claims abstract description 13
- 230000008447 perception Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 7
- 238000010295 mobile communication Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004590 computer program Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00896—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys specially adapted for particular uses
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Abstract
The invention relates to the technical field of automobile communication, and provides a safe communication method based on a Bluetooth digital key, which comprises the following steps: s1, the TSP platform generates a virtual key 1 based on a master key and a hash factor DF, and the virtual key 1 and the hash factor DF are issued to the mobile terminal; s2, automatically connecting the mobile terminal with the Bluetooth module within a set distance, and sending the hash factor DF and the virtual key 1 to the Bluetooth module by the mobile terminal, wherein the Bluetooth module calculates the virtual key 2 based on the received hash factor DF and the master key; and S3, if the virtual key 1 is the same as the virtual key 2 generated by the Bluetooth module, establishing communication connection between the T-box and the corresponding mobile terminal. The virtual key generated based on the hash factor DF is adopted for the identity verification of both sides, so that the safety of both communication sides is greatly improved; the method is connected in a JUST WORK mode, pairing codes are not required to be input, users are not connected in a perception mode, offline use is supported (the underground garage can be opened and closed without a network), and better mobile phone compatibility is achieved.
Description
Technical Field
The invention relates to the technical field of automobile communication, and provides a safe communication method and system based on a Bluetooth digital key.
Background
Along with the popularization of intelligent automobiles, the requirements of users on the intelligence are higher and higher, so that the users can safely use the automobiles without the traditional physical keys, and the automobile Bluetooth digital keys become a strong requirement, therefore, the automobile Bluetooth digital keys become the standard configuration of next-generation automobiles, the Bluetooth digital keys mainly use the near field communication technology (Bluetooth), the users can open and close the automobile doors through the mobile phone APP, and the operations such as the starting of the automobiles are started, and at present, various large traditional automobile factories are beginning to design and apply the Bluetooth digital keys. There are many bluetooth key schemes on the market at present, but most schemes have communication security risks.
Disclosure of Invention
The invention provides a safe communication method of a Bluetooth digital key, which aims to improve the problems.
The invention is realized in this way, a safe communication method based on Bluetooth digital key, the safe communication method is applied to the communication system, the communication system includes TSP platform, mobile terminal and bluetooth module, the communication connection among TSP platform, mobile terminal and bluetooth module, the safe communication method is as follows:
s11, the mobile terminal is automatically connected with the Bluetooth module within a set distance, the hash factor DF and the virtual key 1 issued by the TSP are sent to the Bluetooth module, so that the Bluetooth module calculates the virtual key 2 based on the received hash factor DF and the master key, and if the virtual key 1 is identical to the virtual key 2, communication connection between the T-box and the corresponding mobile terminal is established.
Further, after step S11, the method includes:
s12, the mobile terminal randomly generates 1 key factor 2, and simultaneously receives the key factor 1 sent by the Bluetooth module, and generates a session key 1 and a session key 2 based on the key factor 1 and the key factor 2 respectively;
s13, the mobile terminal encrypts information sent to the Bluetooth module based on the session key 2, and decrypts the encrypted information sent by the Bluetooth module based on the session key 1.
Further, after step S11, before step S12, the method further includes:
s14, the mobile terminal encrypts the mobile phone characteristic value based on the virtual key 1 and sends the encrypted mobile phone characteristic value to the Bluetooth module, and meanwhile the mobile terminal sends the mobile phone characteristic value to the Bluetooth module, so that the Bluetooth module decrypts the encrypted mobile phone characteristic value sent by the mobile terminal based on the virtual key 2 and then verifies the decrypted mobile phone characteristic value based on the received mobile phone characteristic value;
s15, the mobile terminal receives the vehicle characteristic value and the encrypted vehicle characteristic value sent by the Bluetooth module, decrypts the encrypted vehicle characteristic value based on the virtual key 1, and verifies the decrypted vehicle characteristic value based on the received vehicle characteristic value;
after the two-party authentication is passed, step S12 is performed.
On the other hand, the invention also provides a safety communication method based on the Bluetooth digital key, which is applied to a communication system, wherein the communication system comprises a TSP platform, a mobile terminal and a Bluetooth module, the TSP platform, the mobile terminal and the Bluetooth module are in communication connection, and the safety communication method comprises the following steps:
s21, receiving a hash factor DF and a virtual key 1 sent by the mobile terminal, and calculating a virtual key 2 based on the received hash factor DF and a stored master key;
s22, if the virtual key 1 is the same as the generated virtual key 2, establishing a communication connection between the T-box and the corresponding mobile terminal.
Further, after step S22, the method further includes:
s23, the Bluetooth module randomly generates 1 key factor 1 and receives a key factor 2 sent by the mobile terminal;
and S24, the Bluetooth module generates a session key 1 and a session key 2 based on the key factor 1 and the key factor 2 respectively, encrypts information sent to the mobile terminal based on the session key 1, and decrypts encrypted information sent by the mobile terminal based on the session key 2.
Further, after step S22, before step S23, the method further includes:
s25, the Bluetooth module encrypts the vehicle characteristic value based on the virtual key 2 and sends the vehicle characteristic value to the mobile terminal, and meanwhile the Bluetooth module sends the vehicle characteristic value to the mobile terminal, so that the mobile terminal decrypts the encrypted vehicle characteristic value sent by the Bluetooth module based on the virtual key 1 and then verifies the decrypted vehicle characteristic value based on the received vehicle characteristic value;
s26, the Bluetooth module receives the mobile phone characteristic value and the encrypted mobile phone characteristic value sent by the mobile terminal, decrypts the encrypted mobile phone characteristic value based on the virtual key 2, and verifies the decrypted mobile phone characteristic value based on the received mobile phone characteristic value;
after the both sides pass the verification, step S23 is executed.
On the other hand, the invention also provides a safety communication method based on the Bluetooth digital key, which is applied to a communication system, wherein the communication system comprises a TSP platform, a mobile terminal and a Bluetooth module, the TSP platform, the mobile terminal and the Bluetooth module are in communication connection, and the safety communication method comprises the following steps:
s31, the TSP platform generates a virtual key 1 based on the master key and the hash factor DF, and the virtual key 1 and the hash factor DF are issued to the mobile terminal.
In another aspect, the present invention further provides a communication system, where the communication system includes a TSP platform, a mobile terminal, and a bluetooth module, where the mobile terminal is configured to perform the bluetooth digital key-based secure communication method according to any one of claims 1 to 3, and the bluetooth module is configured to perform the bluetooth digital key-based secure communication method according to any one of claims 4 to 6, and the TSP platform is configured to perform the bluetooth digital key-based secure communication method according to claim 7.
The safe communication method of the Bluetooth digital key provided by the invention has the following beneficial technical effects:
1) Besides the authentication of both sides by adopting the virtual key generated based on the hash factor DF, the authentication is further carried out based on the virtual key plus the characteristic value, so that the safety of both communication sides is greatly improved;
2) The method is connected in a JUST WORK mode, pairing codes are not required to be input, users are not connected in a perception mode, offline use is supported (the underground garage can be opened and closed without a network), and better mobile phone compatibility is achieved.
Drawings
Fig. 1 is a communication interaction diagram of a secure communication method of a bluetooth digital key according to a fourth embodiment of the present invention.
Detailed Description
The following detailed description of the invention refers to the accompanying drawings, which illustrate preferred embodiments of the invention in further detail.
The secure communication method based on the Bluetooth digital key provided by the embodiment of the invention comprises the following steps:
s1, the TSP platform generates a virtual key 1 based on a master key and a hash factor DF, and the virtual key 1 and the hash factor DF are issued to the mobile terminal;
the master key may be generated by a TSP platform or a bluetooth module, and if the master key is generated by the TSP platform, the master key is issued to the bluetooth module after being generated, and if the master key is generated by the bluetooth module, the master key is uploaded to the TSP platform after being generated, and the hash factor is a set of character sequences randomly generated by the TSP platform. The mobile terminal comprises mobile communication terminal equipment such as a mobile phone, a tablet, an IPAD and the like.
S2, automatically connecting the mobile terminal with the Bluetooth module within a set distance, and sending the hash factor DF and the virtual key 1 to the Bluetooth module by the mobile terminal, wherein the Bluetooth module calculates the virtual key 2 based on the received hash factor DF and the master key;
and S3, if the virtual key 1 is the same as the virtual key 2 generated by the Bluetooth module, establishing communication connection between the T-box and the corresponding mobile terminal.
In order to ensure the security of the communication data between the mobile terminal and the T-box, the present invention encrypts the transmitted data based on the session key generated respectively to improve the security of data transmission, so the secure communication method based on the bluetooth digital key provided in the second embodiment of the present invention specifically includes the following steps:
s1, a TSP platform generates a virtual key 1 based on a master key and a randomly generated hash factor, and the virtual key 1 and the hash factor DF are issued to a mobile terminal;
the master key may be generated by a TSP platform or a bluetooth module, and if the master key is generated by the TSP platform, the master key is issued to the bluetooth module after being generated, and if the master key is generated by the bluetooth module, the master key is uploaded to the TSP platform after being generated, and the hash factor is a set of character sequences randomly generated by the TSP platform. The mobile terminal comprises mobile communication terminal equipment such as a mobile phone, a tablet, an IPAD and the like.
S2, automatically establishing connection between the mobile terminal and the Bluetooth module within a set distance, and simultaneously sending a hash factor DF and a virtual key 1 to the Bluetooth module by the mobile terminal, wherein the Bluetooth module calculates the virtual key 2 based on the received hash factor DF and a master key;
and S3, if the virtual key 1 is the same as the virtual key 2, the Bluetooth module and the mobile terminal randomly generate 1 key factor and send the generated key factors to the opposite party, the two parties respectively generate a session key 1 and a session key 2 based on the received key factor 1 and the self-generated key factor 2, encrypt information sent to the opposite party based on the session key 1, and decrypt received encrypted data based on the session key 2.
In order to ensure that both communication parties are legal parties, the method for secure communication based on the Bluetooth digital key, provided by the embodiment three of the invention, comprises the following steps of
S1, a TSP platform generates a virtual key 1 based on a master key and a randomly generated hash factor, and the virtual key 1 and the hash factor DF are issued to a mobile terminal;
the master key may be generated by a TSP platform or a bluetooth module, and if the master key is generated by the TSP platform, the master key is issued to the bluetooth module after being generated, and if the master key is generated by the bluetooth module, the master key is uploaded to the TSP platform after being generated, and the hash factor is a set of character sequences randomly generated by the TSP platform. The mobile terminal is integrated with a communication mobile terminal, and comprises mobile communication terminal equipment such as a mobile phone, a tablet, an IPAD and the like.
S2, automatically establishing connection between the mobile terminal and the Bluetooth module within a set distance, transmitting the hash factor DF and the virtual key 1 to the Bluetooth module by the mobile terminal, and calculating the virtual key 2 by the Bluetooth module based on the received hash factor DF and the master key;
the Bluetooth module is internally integrated with a vehicle characteristic value comprising a vehicle equipment characteristic SEID and a vehicle random number TRnd, the mobile terminal is internally integrated with a mobile phone characteristic value comprising a mobile phone characteristic TEEID and a mobile phone random number CRnd, after the Bluetooth module is connected with the mobile terminal, the mobile terminal sends the mobile phone characteristic value to the Bluetooth module, and the Bluetooth module sends the vehicle characteristic value to the mobile terminal to finish the characteristic value exchange of the two parties.
S3, if the virtual key 1 stored in the mobile terminal is the same as the virtual key 2 generated by the Bluetooth module, exchanging the characteristic values of the two parties, encrypting the characteristic values of the mobile terminal based on the virtual key 1, sending the encrypted characteristic values to the Bluetooth module, decrypting the encrypted characteristic values of the mobile terminal based on the virtual key 2, and verifying the decrypted characteristic values of the mobile terminal;
only when the Bluetooth module and the mobile terminal are matched with each other, the Bluetooth module can decrypt the encrypted mobile phone characteristic value sent by the mobile terminal, the decrypted mobile phone characteristic value is identical to the mobile phone characteristic value stored by the Bluetooth module, verification of the mobile phone characteristic value is completed, and the verification process of the vehicle characteristic value is identical to the verification process of the mobile phone characteristic value.
S4, the Bluetooth module encrypts the vehicle characteristic value based on the virtual key 2 and sends the encrypted vehicle characteristic value to the mobile terminal, and the mobile terminal decrypts the encrypted vehicle characteristic value sent by the Bluetooth module based on the virtual key 1 and verifies the decrypted vehicle characteristic value;
and S5, after the verification of the two parties is passed, establishing communication connection between the T-box and the corresponding mobile terminal.
In order to ensure that both communication parties are legal parties, the invention performs verification based on the virtual key generated by the hash factor DF, and further performs further verification based on the mode of the virtual key plus the characteristic value, thereby greatly improving the safety of both communication parties, and in addition, in order to ensure the safety of the mobile terminal and the T-box communication data, the invention encrypts the sent data based on the session keys generated respectively so as to improve the safety of data transmission, therefore, fig. 1 is a flow chart of a safe communication method based on the Bluetooth digital key, which is provided by the fourth embodiment of the invention, and the method specifically comprises the following steps:
s1, a TSP platform generates a virtual key 1 based on a master key and a randomly generated hash factor, and the virtual key 1 and the hash factor DF are issued to a mobile terminal;
the master key may be generated by a TSP platform or a bluetooth module, and if the master key is generated by the TSP platform, the master key is issued to the bluetooth module after being generated, and if the master key is generated by the bluetooth module, the master key is uploaded to the TSP platform after being generated, and the hash factor is a set of character sequences randomly generated by the TSP platform. The mobile terminal is integrated with a communication mobile terminal, and comprises mobile communication terminal equipment such as a mobile phone, a tablet, an IPAD and the like.
S2, automatically establishing connection between the mobile terminal and the Bluetooth module within a set distance, transmitting the hash factor DF and the virtual key 1 to the Bluetooth module by the mobile terminal, and calculating the virtual key 2 by the Bluetooth module based on the received hash factor DF and the master key;
the Bluetooth module is internally integrated with a vehicle characteristic value comprising a vehicle equipment characteristic SEID and a vehicle random number TRnd, the mobile terminal is internally integrated with a mobile phone characteristic value comprising a mobile phone characteristic TEEID and a mobile phone random number CRnd, after the Bluetooth module is connected with the mobile terminal, the mobile terminal sends the mobile phone characteristic value to the Bluetooth module, and the Bluetooth module sends the vehicle characteristic value to the mobile terminal to finish the characteristic value exchange of the two parties.
S3, if the virtual key 1 stored in the mobile terminal is the same as the virtual key 2 generated by the Bluetooth module, exchanging the characteristic values of the two parties, encrypting the mobile phone characteristic value based on the virtual key 1, sending the encrypted characteristic value to the Bluetooth module, decrypting the encrypted characteristic value sent by the mobile terminal based on the virtual key 2 by the Bluetooth module, and verifying the decrypted mobile phone characteristic value;
only when the Bluetooth module and the mobile terminal are matched with each other, the Bluetooth module can decrypt the encrypted mobile phone characteristic value sent by the mobile terminal, the decrypted mobile phone characteristic value is identical to the mobile phone characteristic value stored by the Bluetooth module, verification of the mobile phone characteristic value is completed, and the verification process of the vehicle characteristic value is identical to the verification process of the mobile phone characteristic value.
S4, the Bluetooth module encrypts the vehicle characteristic value based on the virtual key 2 and sends the encrypted characteristic value to the mobile terminal, and the mobile terminal decrypts the encrypted characteristic value sent by the Bluetooth module based on the virtual key 1 and verifies the decrypted vehicle characteristic value;
and S5, after the two sides pass verification, the Bluetooth module and the mobile terminal randomly generate 1 key factor and send the generated key factor to the other side, the two sides respectively generate a session key 1 and a session key 2 based on the received key factor 1 and the self-generated key factor 2, encrypt information sent to the other side based on the session key 1, and decrypt the received encrypted data based on the session key 2.
The secure communication method based on the bluetooth digital key provided in the fifth embodiment of the present invention further includes, based on the first embodiment, the second embodiment, the third embodiment and the fourth embodiment:
when the vehicle leaves the factory, the TSP platform transmits a blue tooth information inquiry instruction and a master key inquiry instruction when the station finishes vehicle detection, and the Bluetooth module returns Bluetooth information and a master key through a Tbox; the TSP platform generates a virtual key 1 based on the master key and a randomly generated hash factor DF.
In the embodiment of the invention, when the mobile terminal sends registration information to the TSP platform, the registration information carries a vehicle characteristic value, the TSP platform transmits the corresponding virtual key 1 to the mobile terminal, and the mobile terminal stores the received virtual key 1.
Accordingly, the present invention provides a computer readable storage medium having stored therein at least one instruction, at least one program, a code set, or an instruction set, wherein the at least one instruction, the at least one program, the code set, or the instruction set implements the aforementioned bluetooth digital key-based secure communication method steps when loaded and executed by a processor.
Correspondingly, the invention also discloses an electronic device of the safe communication method based on the Bluetooth digital key, which comprises:
a memory for storing a computer program;
a processor for implementing the steps of a bluetooth digital key based secure communication method as previously disclosed when executing said computer program.
In another aspect, an embodiment of the present invention provides a communication system, which further includes:
the Bluetooth digital key-based method is characterized by comprising a TSP platform, a mobile terminal and a Bluetooth module, wherein the TSP platform is in remote communication connection with the mobile terminal, the TSP platform is in remote communication connection with the Bluetooth module through a T-box, and the TSP platform, the mobile terminal and the Bluetooth module respectively execute the Bluetooth digital key-based method.
In the present specification, each embodiment is described in a progressive manner, and the same and similar parts of each embodiment participate in each other, and each embodiment mainly describes differences from other embodiments. In particular, for the hardware+program class embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and the relevant matters only take part in the partial explanation of the method embodiment.
Embodiments of the present description are not limited to situations in which industry communication standards, standard computer data processing and data storage rules are required or described in one or more embodiments of the present description. Some industry standards or embodiments modified slightly based on the implementation described by the custom manner or examples can also realize the same, equivalent or similar or predictable implementation effect after modification of the above examples. Examples of data acquisition, storage, judgment, processing, etc., using these modifications or variations may still fall within the scope of alternative implementations of the examples of this specification. In addition, functional modules in the embodiments of the present invention may be integrated together to form a single part, or each module may exist alone, or two or more modules may be integrated to form a single part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention.
And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes. It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (3)
1. The safe communication method based on the Bluetooth digital key is characterized by being applied to a communication system, wherein the communication system comprises a TSP platform, a mobile terminal and a Bluetooth module, the TSP platform, the mobile terminal and the Bluetooth module are in communication connection, and the safe communication method comprises the following steps:
s11, the mobile terminal is automatically connected with a Bluetooth module within a set distance, a hash factor DF and a virtual key 1 issued by the TSP are sent to the Bluetooth module, so that the Bluetooth module calculates a virtual key 2 based on the received hash factor DF and a master key, and if the virtual key 1 is the same as the virtual key 2, communication connection between a T-box and a corresponding mobile terminal is established;
after step S11, it includes:
s12, the mobile terminal randomly generates 1 key factor 2, and simultaneously receives the key factor 1 sent by the Bluetooth module, and generates a session key 1 and a session key 2 based on the key factor 1 and the key factor 2 respectively;
s13, the mobile terminal encrypts information sent to the Bluetooth module based on the session key 2, and decrypts the encrypted information sent by the Bluetooth module based on the session key 1;
the step S11 further includes, after the step S12:
s14, the mobile terminal encrypts the mobile phone characteristic value based on the virtual key 1 and sends the encrypted mobile phone characteristic value to the Bluetooth module, and meanwhile the mobile terminal sends the mobile phone characteristic value to the Bluetooth module, so that the Bluetooth module decrypts the encrypted mobile phone characteristic value sent by the mobile terminal based on the virtual key 2 and then verifies the decrypted mobile phone characteristic value based on the received mobile phone characteristic value;
s15, the mobile terminal receives the vehicle characteristic value and the encrypted vehicle characteristic value sent by the Bluetooth module, decrypts the encrypted vehicle characteristic value based on the virtual key 1, and verifies the decrypted vehicle characteristic value based on the received vehicle characteristic value;
after the two-party authentication is passed, step S12 is performed.
2. The safe communication method based on the Bluetooth digital key is characterized by being applied to a communication system, wherein the communication system comprises a TSP platform, a mobile terminal and a Bluetooth module, the TSP platform, the mobile terminal and the Bluetooth module are in communication connection, and the safe communication method comprises the following steps:
s21, receiving a hash factor DF and a virtual key 1 sent by the mobile terminal, and calculating a virtual key 2 based on the received hash factor DF and a stored master key;
s22, if the virtual key 1 is the same as the generated virtual key 2, establishing communication connection between the T-box and the corresponding mobile terminal;
after step S22, the method further comprises:
s23, the Bluetooth module randomly generates 1 key factor 1 and receives a key factor 2 sent by the mobile terminal;
s24, the Bluetooth module respectively generates a session key 1 and a session key 2 based on the key factor 1 and the key factor 2, encrypts information sent to the mobile terminal based on the session key 1, and decrypts encrypted information sent by the mobile terminal based on the session key 2;
the step S22 and the step S23 are followed by:
s25, the Bluetooth module encrypts the vehicle characteristic value based on the virtual key 2 and sends the vehicle characteristic value to the mobile terminal, and meanwhile the Bluetooth module sends the vehicle characteristic value to the mobile terminal, so that the mobile terminal decrypts the encrypted vehicle characteristic value sent by the Bluetooth module based on the virtual key 1 and then verifies the decrypted vehicle characteristic value based on the received vehicle characteristic value;
s26, the Bluetooth module receives the mobile phone characteristic value and the encrypted mobile phone characteristic value sent by the mobile terminal, decrypts the encrypted mobile phone characteristic value based on the virtual key 2, and verifies the decrypted mobile phone characteristic value based on the received mobile phone characteristic value;
after the both sides pass the verification, step S23 is executed.
3. A communication system, wherein the communication system comprises a TSP platform, a mobile terminal and a bluetooth module, wherein the mobile terminal is configured to execute the secure communication method based on a bluetooth digital key according to claim 1, the bluetooth module is configured to execute the secure communication method based on a bluetooth digital key according to claim 2, the TSP platform generates a virtual key 1 based on a master key and a hash factor DF, and issues the virtual key 1 and the hash factor DF to the mobile terminal.
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| CN114999031A (en) * | 2022-05-26 | 2022-09-02 | 重庆长安汽车股份有限公司 | Key management method for Bluetooth key safety vehicle control |
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