Digital key car end module, digital key authentication method, digital key car end module, digital key and digital key authentication system
By storing the initial security key in the digital key vehicle end module and pairing and authentication using Bluetooth technology, the problem of existing digital key systems requiring cloud servers and mobile networks is solved, achieving a simpler, safer and more convenient user experience.
Patent Information
- Application Number
- CN202311764535.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-21
- Publication Date
- 2025-07-01
AI Technical Summary
The existing digital key system requires users to register an account on the cloud server and bind vehicle information, and requires a mobile network connection, resulting in cumbersome use and vulnerable to network attacks and information leakage.
The initial security key is stored through the digital key vehicle terminal module, and paired and authenticated using Bluetooth technology. Without the need for cloud server and mobile network support, binding and authentication are completed directly in the vehicle.
It simplifies the pairing and activation process of digital keys, reduces dependence on mobile networks, improves the security and convenience of system use, and reduces the risk of information leakage.
Smart Images
Figure CN120238873A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technology of automotive electronics, and in particular to an authentication method for a digital key vehicle module and a digital key, a digital key vehicle module, a digital key, and a digital key authentication system. Background Art
[0002] With the rapid development of digital keys in the automotive field, currently most vehicle manufacturers have used mobile phone digital keys to replace traditional intelligent keys. However, usually, a digital key needs to be bound to an account to be activated and used. Therefore, the user needs to register an account on the cloud server first, and then bind the vehicle information to this account to realize the function of the digital key. The whole process requires a mobile network connection. It is cumbersome to implement and restricted by the network. When the network or server is attacked by hackers, it will even lead to information leakage and property losses to users. Summary of the Invention
[0003] In order to overcome the above technical defects and reduce the dependence on the mobile network, the purpose of the present invention is to provide an authentication method for a digital key vehicle module and a digital key, including:
[0004] The digital key vehicle module stores the initial security key sent by the upper computer;
[0005] The digital key vehicle module sends the Bluetooth MAC address to the in-vehicle host, and the in-vehicle host generates a QR code according to the Bluetooth MAC address;
[0006] The digital key vehicle module receives the Bluetooth pairing request sent by the digital key. After successfully pairing with the digital key, it stores the Bluetooth pairing information of the digital key and establishes a Bluetooth connection with the digital key;
[0007] When the binding status between the digital key and the digital key vehicle module is unbound, the digital key vehicle module sends the initial security key to the digital key.
[0008] Preferably, after the digital key vehicle module receives the information that the digital key has successfully saved the initial security key, it modifies the binding status of the digital key to bound;
[0009] The digital key vehicle module determines that it has stored the Bluetooth pairing information of the digital key and establishes a Bluetooth connection with the digital key;
[0010] The digital key vehicle module receives the second Bluetooth signal sent by the digital key, and the second Bluetooth signal includes the first Bluetooth key stored by the digital key;
[0011] The vehicle - end module of the digital key verifies the first Bluetooth key and the initial Bluetooth key. When the first Bluetooth key is consistent with the initial Bluetooth key, the vehicle - end module of the digital key and the digital key are successfully authenticated.
[0012] Preferably, the vehicle - end module of the digital key receives a third Bluetooth signal sent by the digital key, and the third Bluetooth signal includes a locking instruction;
[0013] The vehicle - end module of the digital key receives the third Bluetooth signal and sends a locking instruction to the body control module;
[0014] The vehicle - end module of the digital key receives the lock - state information sent by the body control module. When the lock state is the closed state, it sends the lock - state information to the digital key.
[0015] Preferably, the vehicle - end module of the digital key receives a fourth Bluetooth signal sent by the digital key, and the fourth Bluetooth signal includes an unbinding request;
[0016] The vehicle - end module of the digital key receives the fourth Bluetooth signal and changes the binding state of the digital key to unbound;
[0017] The vehicle - end module of the digital key disconnects the Bluetooth connection with the digital key and deletes the Bluetooth pairing information of the digital key.
[0018] Preferably, the vehicle - end module of the digital key receives an instruction signal sent by a diagnostic tool. The instruction signal is to delete the binding information of the data key, and the binding information includes Bluetooth pairing information and binding state.
[0019] On the other hand, the present invention discloses an authentication method for a digital key and a vehicle - end module of a digital key, including:
[0020] After the digital key scans a two - dimensional code and identifies the Bluetooth MAC address, it sends a Bluetooth pairing request to the vehicle - end module of the digital key. The two - dimensional code is generated by the in - vehicle host according to the Bluetooth MAC address, and the Bluetooth MAC address is generated by the vehicle - end module of the digital key according to the initial security key;
[0021] The digital key establishes a Bluetooth connection with the vehicle - end module of the digital key;
[0022] When the binding state between the digital key and the vehicle - end module of the digital key is unbound, the digital key receives the initial security key sent by the vehicle - end module of the digital key.
[0023] Preferably, the digital key sends a first Bluetooth signal to the vehicle - end module of the digital key, and the first Bluetooth signal includes a Bluetooth connection request;
[0024] The digital key establishes a Bluetooth connection with the vehicle-end module of the digital key;
[0025] When the binding status between the digital key and the vehicle-end module of the digital key is "already bound", the digital key establishes a Bluetooth connection with the vehicle-end module of the digital key;
[0026] The digital key sends a second Bluetooth signal to the vehicle-end module of the digital key, and the second Bluetooth signal includes the first Bluetooth key stored by the digital key;
[0027] When the first Bluetooth key is consistent with the initial Bluetooth key, the authentication between the digital key and the vehicle-end module of the digital key is successful.
[0028] Preferably, the digital key sends a third Bluetooth signal to the vehicle-end module of the digital key, and the third Bluetooth signal includes a locking instruction;
[0029] The digital key receives the lock status information sent by the vehicle-end module of the digital key, and the lock status is the closed state.
[0030] Preferably, the digital key sends a fourth Bluetooth signal to the vehicle-end module of the digital key, and the fourth Bluetooth signal includes a de-binding request.
[0031] On the other hand, the present invention discloses a vehicle-end module of a digital key, which applies the authentication method between the vehicle-end module of the digital key and the digital key as described in any one of the above.
[0032] On the other hand, the present invention discloses a digital key, which applies the authentication method between the digital key and the vehicle-end module of the digital key as described in any one of the above.
[0033] On the other hand, the present invention discloses a digital key authentication system, which includes the digital key as described above, the vehicle-end module of the digital key as described above, and an in-vehicle host.
[0034] In the present invention, the interaction between the digital key and the vehicle-end module of the digital key, such as processes of binding, unbinding, pairing, transmitting security keys, etc., do not require the support of a cloud server and a mobile network, and do not require an external device to store keys. Therefore, the pairing method in the present invention is simpler and easier to implement, has lower requirements for hardware resources, and can meet more usage scenarios of users. Description of the Drawings
[0035] Figure 1 It is a schematic diagram of a digital key authentication system in an embodiment conforming to the present invention;
[0036] Figure 2 It is a schematic diagram of an authentication method between a vehicle-end module of a digital key and a digital key in an embodiment conforming to the present invention;
[0037] Figure 3 It is a schematic diagram of an authentication method between a vehicle - end module of a digital key and a digital key in an embodiment of the present invention.
[0038] Figure 4 It is a schematic diagram of an authentication method between a vehicle - end module of a digital key and a digital key in an embodiment of the present invention.
[0039] Figure 5 It is a schematic diagram of an authentication method between a vehicle - end module of a digital key and a digital key in an embodiment of the present invention. Detailed implementation manners
[0040] The advantages of the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.
[0041] Here, the exemplary embodiments will be described in detail, and the examples are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.
[0042] The terms used in the present disclosure are for the purpose of describing specific embodiments only and are not intended to limit the present disclosure. The singular forms "a", "the", and "said" used in the present disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.
[0043] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "while" or "in response to determining".
[0044] Figure 1Schematic diagram of a digital key authentication system in an embodiment of the present invention. In this embodiment, the digital key authentication system includes: a digital key, a vehicle-end module of the digital key, and an in-vehicle host. In this embodiment, the digital key is an application program of a mobile terminal. In other embodiments, the digital key may be other intelligent terminals, such as smart watches, iPads, etc., and the present invention does not make specific limitations here. And, in this embodiment, the vehicle-end module of the digital key
[0045] Both the vehicle-end module of the digital key and the in-vehicle host are hardware modules installed in the vehicle. Among them, the vehicle-end module of the digital key stores the initial security key sent by the upper computer.
[0046] In this embodiment, the upper computer Tester of the vehicle-end module of the digital key is provided by the supplier of the vehicle-end module of the digital key. The upper computer sends the initial security key of the vehicle to the vehicle-end module of the digital key through the CAN bus of the vehicle. It can be understood that, at the upper computer end, the process of generating the initial security key is to generate a random number key and use this random number key as the initial security key of the vehicle. Therefore, in this embodiment, each vehicle is implanted with an inherent initial security key. After receiving the initial security key, the vehicle-end module of the digital key stores the initial security key in the security storage unit (not shown in the figure) of the vehicle. After the storage is successful, after the upper computer gets the feedback that the storage in the security storage unit is successful, it can delete the random number key of the vehicle.
[0047] In addition, it can be understood that, in order to improve the security performance, in other embodiments, after the vehicle-end module of the digital key receives the initial security key sent by the upper computer, it can further perform encryption processing and store the encrypted security key in the security storage unit. The encryption algorithm can use common encryption algorithms in the art, and the present invention does not make further limitations and descriptions here.
[0048] Figure 2 Flowchart for the process of binding a digital key using the digital key authentication system in this embodiment.
[0049] After the vehicle-end module of the digital key stores the initial security key sent by the upper computer, the vehicle-end module of the digital key sends the Bluetooth MAC (Media Access Control) address to the in-vehicle host through the CAN bus, and the in-vehicle host generates a two-dimensional code according to the Bluetooth MAC address. The in-vehicle host can display the two-dimensional code in various ways, such as displaying the two-dimensional code through the multimedia system of the vehicle, etc., and the present invention does not make limitations here.
[0050] The digital key scans the two-dimensional code, obtains the Bluetooth MAC address, and sends a Bluetooth pairing request to the vehicle-end module of the digital key.
[0051] The vehicle - end module of the digital key receives the Bluetooth pairing request sent by the digital key. After successful pairing with the digital key, it stores the Bluetooth pairing information of the digital key and establishes a Bluetooth connection with the digital key.
[0052] When the vehicle - end module of the digital key determines that the binding status of the digital key is unbound, it sends the initial security key to the digital key.
[0053] The digital key receives and stores the initial security key, and modifies the binding status of the digital key to bound. Similarly, if the vehicle - end module of the digital key has encrypted the initial security key, the digital key first decrypts it after receiving the initial security key and saves the decrypted initial security key.
[0054] After the digital key receives and stores the initial security key, it feeds back to the vehicle - end module of the digital key that the initial security key has been successfully saved. After receiving the feedback of successful saving, the vehicle - end module of the digital key modifies the binding status of this digital key to bound.
[0055] The above process is the process of the initial binding between the digital key and the vehicle - end module of the digital key. Figure 3 It is a schematic diagram of the process of pairing and authentication with the vehicle - end module of the digital key when the digital key is used again after the binding has been completed.
[0056] The digital key receives the first Bluetooth signal sent by the vehicle - end module of the digital key, and the first Bluetooth signal includes a Bluetooth connection request.
[0057] When the vehicle - end module of the digital key determines that it has stored the Bluetooth pairing information of the digital key, it establishes a Bluetooth connection with the digital key. If the vehicle - end module of the digital key does not query the pairing information of the digital key, it first performs the Bluetooth pairing process. The Bluetooth pairing process belongs to the prior art in this field and will not be elaborated in this invention.
[0058] The vehicle - end module of the digital key receives the second Bluetooth signal sent by the digital key, and the second Bluetooth signal includes the first Bluetooth key stored by the digital key;
[0059] The vehicle - end module of the digital key verifies the first Bluetooth key and the initial Bluetooth key. When the first Bluetooth key is consistent with the initial Bluetooth key, the vehicle - end module of the digital key and the digital key are successfully authenticated.
[0060] Figure 4 It is a schematic diagram of the process of using the digital key to lock the vehicle after the vehicle has been unlocked.
[0061] First, the digital key sends a third Bluetooth signal to the digital key vehicle-end module, where the third Bluetooth signal includes a locking instruction.
[0062] The digital key vehicle-end module receives the third Bluetooth signal and sends a locking instruction to a body control module (BCM) through the vehicle CAN bus.
[0063] After receiving the locking instruction, the BCM executes the locking action, and after the execution is completed, it feeds back the lock status information to the digital key vehicle end module, at which time the lock status is locked.
[0064] The digital key vehicle-end module receives the lock status information sent by the body control module, and sends the lock status information to the digital key. In another embodiment, the digital key vehicle-end module first encrypts the lock status information, and then sends the encrypted lock status information to the digital key, and the digital key also decrypts the information accordingly to obtain the lock status information.
[0065] Figure 5 A schematic diagram of the unbinding and authentication process of the digital key and the digital key vehicle-side module.
[0066] First, the digital key sends a fourth Bluetooth signal to the digital key vehicle-end module, where the fourth Bluetooth signal includes a release request.
[0067] The digital key vehicle-end module receives the fourth Bluetooth signal and changes the binding state of the digital key to unbound;
[0068] The digital key vehicle-end module disconnects the Bluetooth connection with the digital key and deletes the Bluetooth pairing information of the digital key.
[0069] In another embodiment, after the digital key is lost, another new digital key needs to be bound to the digital key vehicle-end module of the vehicle, specifically including:
[0070] The digital key vehicle-end module receives a command signal sent by a diagnostic tool, wherein the command signal is to delete the binding information of the digital key, wherein the binding information includes Bluetooth pairing information and binding status. Thus, the digital key vehicle-end module is initialized once.
[0071] The other digital key is re-bound and authenticated with the digital key vehicle-side module, and the binding and authentication process will not be repeated here.
[0072] Another embodiment of the present invention includes the above-mentioned digital key, and its technical features are not described in detail herein.
[0073] In another embodiment of the present invention, it includes the above-mentioned digital key vehicle-side module, and the technical features of the present invention will not be elaborated herein.
[0074] Based on the above embodiments, it can be seen that the information interaction between the digital key and the digital key vehicle-side module in the present invention does not require the use of a mobile network and a cloud server, and has extremely low requirements for hardware resources. At the same time, it can also meet the requirements in various usage scenarios, such as binding with the digital key vehicle-side module, authentication, interacting data information, unbinding, and reissuing a lost digital key as described above. It completely reduces the dependence on the mobile network in the pairing process of the digital key, has strong practicability and wide applicability.
[0075] It should be noted that the embodiments of the present invention have good implementability and are not any form of limitation to the present invention. Any person skilled in the art may use the disclosed technical content to change or modify it into an equivalent effective embodiment. However, as long as it does not depart from the content of the technical solution of the present invention, any modification, equivalent change, or modification made to the above embodiments according to the technical essence of the present invention still falls within the scope of the technical solution of the present invention.
Claims
1. A method for authenticating a digital key vehicle-end module and a digital key, characterized in that including The vehicle - end module of the digital key stores the initial security key sent by the upper computer; The vehicle - end module of the digital key sends the Bluetooth MAC address to the in - vehicle host, and the in - vehicle host generates a QR code according to the Bluetooth MAC address; The vehicle - end module of the digital key receives the Bluetooth pairing request sent by the digital key. After successful pairing with the digital key, it stores the Bluetooth pairing information of the digital key and establishes a Bluetooth connection with the digital key; When the binding status between the digital key and the vehicle - end module of the digital key is unbound, the vehicle - end module of the digital key sends the initial security key to the digital key.
2. The authentication method of the vehicle - end module of the digital key and the digital key according to claim 1, characterized in that After the vehicle - end module of the digital key receives the information that the digital key has successfully saved the initial security key, it modifies the binding status of the digital key to bound; The vehicle - end module of the digital key receives the first Bluetooth signal sent by the digital key, and the first Bluetooth signal includes a connection Bluetooth request; The vehicle - end module of the digital key determines that it has stored the Bluetooth pairing information of the digital key and establishes a Bluetooth connection with the digital key; The vehicle - end module of the digital key receives the second Bluetooth signal sent by the digital key, and the second Bluetooth signal includes the first Bluetooth key stored by the digital key; The vehicle - end module of the digital key verifies the first Bluetooth key and the initial Bluetooth key. When the first Bluetooth key is consistent with the initial Bluetooth key, the vehicle - end module of the digital key and the digital key are successfully authenticated.
3. The authentication method of the vehicle - end module of the digital key and the digital key according to claim 2, characterized in that The vehicle - end module of the digital key receives the third Bluetooth signal sent by the digital key, and the third Bluetooth signal includes a locking instruction; The vehicle - end module of the digital key receives the third Bluetooth signal and sends a locking instruction to the body control module; The vehicle - end module of the digital key receives the lock status information sent by the body control module. When the lock status is the closed state, it sends the lock status information to the digital key.
4. The authentication method of the vehicle - end module of the digital key and the digital key according to claim 2, characterized in that The vehicle - end module of the digital key receives the fourth Bluetooth signal sent by the digital key, and the fourth Bluetooth signal includes an unbinding request; The vehicle - end module of the digital key receives the fourth Bluetooth signal and modifies the binding status of the digital key to unbound; The vehicle - end module of the digital key disconnects the Bluetooth connection with the digital key and deletes the Bluetooth pairing information of the digital key.
5. The authentication method of the vehicle - end module of the digital key and the digital key according to claim 2, characterized in that The vehicle - end module of the digital key receives the instruction signal sent by the diagnostic tool, and the instruction signal is to delete the binding information of the data key, and the binding information includes Bluetooth pairing information and binding status.
6. A method for authenticating a digital key and a vehicle-end module of a digital key, characterized in that, including: After scanning the QR code and identifying the Bluetooth MAC address, the digital key sends a Bluetooth pairing request to the vehicle-end module of the digital key. The QR code is generated by the in-vehicle host according to the Bluetooth MAC address, and the Bluetooth MAC address is generated by the vehicle-end module of the digital key according to the initial security key; The digital key establishes a Bluetooth connection with the vehicle-end module of the digital key; When the binding status between the digital key and the vehicle-end module of the digital key is unbound, the digital key receives the initial security key sent by the vehicle-end module of the digital key.
7. The authentication method of the digital key and the vehicle-end module of the digital key according to claim 6, wherein The digital key sends a first Bluetooth signal to the vehicle-end module of the digital key, and the first Bluetooth signal includes a connection Bluetooth request; The digital key establishes a Bluetooth connection with the vehicle-end module of the digital key; When the binding status between the digital key and the vehicle-end module of the digital key is bound, the digital key establishes a Bluetooth connection with the vehicle-end module of the digital key; The digital key sends a second Bluetooth signal to the vehicle-end module of the digital key, and the second Bluetooth signal includes the first Bluetooth key stored by the digital key; When the first Bluetooth key is consistent with the initial Bluetooth key, the authentication between the digital key and the vehicle-end module of the digital key is successful.
8. The authentication method of the digital key and the vehicle-end module of the digital key according to claim 7, wherein The digital key sends a third Bluetooth signal to the vehicle-end module of the digital key, and the third Bluetooth signal includes a locking instruction; The digital key receives the lock status information sent by the vehicle-end module of the digital key, and the lock status is the closed state.
9. The authentication method of the vehicle-end module of the digital key and the digital key according to claim 7, wherein The digital key sends a fourth Bluetooth signal to the vehicle-end module of the digital key, and the fourth Bluetooth signal includes a de-binding request.
10. A vehicle-end module for a digital key, characterized in that, Apply the authentication method of the vehicle-end module of the digital key and the digital key according to any one of claims 1-5.
11. A digital key, characterized in that, Apply the authentication method of the digital key and the vehicle-end module of the digital key according to any one of claims 6-9.
12. A digital key authentication system, characterized in that, It includes the digital key according to claim 11, the vehicle-end module of the digital key according to claim 10 and the in-vehicle host.