Automobile digital key management method and system

Abstract

The invention relates to the technical field of Internet of Things, and particularly provides a management method and system of an automobile digital key, the management method is applied to the management system of the automobile digital key, the management system comprises a Bluetooth device, a vehicle-mounted device, an intelligent terminal and a management platform, the Bluetooth device does not have a networking function, and the vehicle-mounted device does not have a networking function. The vehicle-mounted device is deployed on a vehicle and has a networking function; the method comprises the following steps: an intelligent terminal sends vehicle information and equipment information of Bluetooth equipment to a management platform; the management platform creates digital key information of the vehicle based on the vehicle information and the equipment information of the Bluetooth equipment, and sends the digital key information to the vehicle-mounted device and the intelligent terminal; the intelligent terminal sends digital key information to the Bluetooth device; and the Bluetooth device receives and stores the digital key information of the vehicle sent by the intelligent terminal. Therefore, an electronic product without a networking function can realize non-inductive vehicle control, and diversity of vehicle control modes is realized.

Description

Technical Field

[0001] The present application relates to the field of Internet of Things technology, and in particular to a management method and system for automobile digital keys. Background Art

[0002] At present, digital car keys are becoming an important configuration of smart connected cars, and many car companies are designing, developing and applying digital car keys. Digital car keys transfer the functions of physical car keys to commonly used electronic products, such as mobile phones and watches. In this way, people can not only give up carrying heavy physical car keys, but also realize more modern practical functions in addition to the basic functions of door unlocking, window lifting and trunk opening, such as air conditioning switch, one-button parking, vehicle summoning, vehicle positioning and navigation, etc.

[0003] In related technologies, the electronic product itself is usually required to be able to connect to the Internet and interact with the vehicle's cloud platform to activate the vehicle's digital key.

[0004] In the above solution, due to the strong reliance on network hardware, some low-end electronic products that do not have networking capabilities cannot use digital keys. Summary of the invention

[0005] In order to solve the above technical problems, the present application provides a management method and system for automobile digital keys. Through the coordinated use of a management platform and an intelligent terminal, Bluetooth devices that do not have networking functions can use digital keys, and electronic products that do not have networking functions can also achieve seamless control of vehicles.

[0006] In the first aspect, the present application provides a method for managing a digital key of a car, the management method is applied to a management system of a digital key of a car, the management system of the digital key of a car includes a Bluetooth device, an on-board device, an intelligent terminal and a management platform, the Bluetooth device does not have an Internet connection function, the on-board device is deployed on the vehicle and has an Internet connection function; a communication connection is established between the on-board device and the management platform, a communication connection is established between the intelligent terminal and the management platform, and a Bluetooth connection is established between the intelligent terminal and the Bluetooth device; the method includes: using the intelligent terminal to send a digital key activation request to the management platform, the digital key activation request includes vehicle information of the vehicle and device information of the Bluetooth device, the vehicle The information is the vehicle information of the vehicle on which the vehicle-mounted device is deployed; after receiving the digital key activation request using the management platform, the vehicle's digital key information is created based on the vehicle information of the vehicle and the device information of the Bluetooth device; the vehicle's digital key information is sent to the vehicle-mounted device and the smart terminal respectively using the management platform; the digital key information is sent to the Bluetooth device using the smart terminal; the Bluetooth device is used to receive and store the vehicle's digital key information sent by the smart terminal. The digital key information is used to instruct the vehicle-mounted device to authenticate the Bluetooth device based on the digital key information sent by the Bluetooth device after the Bluetooth device establishes a Bluetooth connection with the vehicle-mounted device, and instruct the vehicle to perform corresponding operations after the authentication is passed.

[0007] In the second aspect, the present application provides a management system for automobile digital keys, which includes a Bluetooth device, an on-board device, an intelligent terminal and a management platform. The Bluetooth device does not have an Internet connection function, and the on-board device is deployed on the vehicle and has an Internet connection function; a communication connection is established between the on-board device and the management platform, a communication connection is established between the intelligent terminal and the management platform, and a Bluetooth connection is established between the intelligent terminal and the Bluetooth device; the intelligent terminal is used to send a digital key activation request to the management platform, the digital key activation request includes vehicle information of the vehicle and device information of the Bluetooth device, and the vehicle information of the vehicle is the vehicle information of the vehicle on which the on-board device is deployed; and send the digital key information of the vehicle to the Bluetooth device; the management platform is used to create the digital key information of the vehicle based on the vehicle information of the vehicle and the device information of the Bluetooth device after receiving the digital key activation request; and send the digital key information of the vehicle to the on-board device and the intelligent terminal respectively; the Bluetooth device is used to receive and store the digital key information of the vehicle sent by the intelligent terminal, and the digital key information is used to instruct the on-board device to authenticate the Bluetooth device based on the digital key information sent by the Bluetooth device after the Bluetooth device establishes a Bluetooth connection with the on-board device, and instruct the vehicle to perform corresponding operations after the authentication is passed.

[0008] Compared with the prior art, the technical solution provided by the embodiments of the present application has the following advantages:

[0009] The embodiment of the present application provides a method and system for managing a digital key of an automobile. The method for managing a digital key of an automobile is applied to a management system of a digital key of an automobile. The management system of a digital key of an automobile includes a Bluetooth device, an on-board device, an intelligent terminal, and a management platform. The Bluetooth device does not have a networking function, and the on-board device is deployed on the vehicle and has a networking function; a communication connection is established between the on-board device and the management platform, a communication connection is established between the intelligent terminal and the management platform, and a Bluetooth connection is established between the intelligent terminal and the Bluetooth device; the method includes: using the intelligent terminal to send a digital key activation request to the management platform, the digital key activation request includes vehicle information of the vehicle, and the vehicle information of the vehicle is the vehicle information of the deployed vehicle. The vehicle information of the vehicle on the vehicle-mounted device and the device information of the Bluetooth device; after receiving the digital key activation request using the management platform, the digital key information of the vehicle is created based on the vehicle information of the vehicle and the device information of the Bluetooth device; the digital key information of the vehicle is sent to the vehicle-mounted device and the smart terminal by the management platform respectively; the digital key information of the vehicle is sent to the Bluetooth device by the smart terminal; the digital key information of the vehicle sent by the smart terminal is received and stored by the Bluetooth device, and the digital key information is used to instruct the vehicle-mounted device to authenticate the Bluetooth device based on the digital key information sent by the Bluetooth device after the Bluetooth device establishes a Bluetooth connection with the vehicle-mounted device, and instruct the vehicle to perform corresponding operations after the authentication is passed. In this embodiment, the digital key information is sent to the Bluetooth device that does not have the networking function through the coordinated use of the management platform and the smart terminal, so that the Bluetooth device that does not have the networking function can use the digital key, and then the electronic products that do not have the networking function can also realize the senseless control of the vehicle, realizing the diversity of vehicle control methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0011] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0012] Figure 1 A schematic diagram of a flow chart of a method for managing a digital key for a car provided in an embodiment of the present application;

[0013] Figure 2 A schematic diagram of the structure of a management system for digital car keys provided in an embodiment of the present application;

[0014] Figure 3 A flowchart of another method for managing a digital car key provided in an embodiment of the present application;

[0015] Figure 4 A flowchart of another method for managing a digital car key provided in an embodiment of the present application. DETAILED DESCRIPTION

[0016] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the scheme of the present application will be further described below. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0017] In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present application, rather than all of the embodiments.

[0018] The term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0019] It should be noted that the concepts such as "first" and "second" mentioned in this application are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0020] It should be noted that the modifications of "one" and "plurality" mentioned in the present application are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0021] The key point detection method provided by the present application is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] Figure 1 This is a flow chart of a method for managing a digital car key in an embodiment of the present application. This embodiment can be applied to situations where an electronic device without networking function controls a vehicle. The method is executed by a management system of a digital car key.

[0023] Figure 2 is a structural diagram of a management system for automobile digital keys provided in an embodiment of the present application, such as Figure 2As shown, the management system 10 of the automobile digital key includes a Bluetooth device 11, a vehicle-mounted device 12, a smart terminal 13 and a management platform 14. The Bluetooth device 11 does not have an Internet connection function, and the vehicle-mounted device 12 is deployed on the vehicle and has an Internet connection function; a communication connection is established between the vehicle-mounted device 12 and the management platform 14, a communication connection is established between the smart terminal 13 and the management platform 14, and a Bluetooth connection is established between the smart terminal 14 and the Bluetooth device 11.

[0024] A Bluetooth device can be understood as a device that does not have the ability to directly connect to the Internet but can exchange data with other devices through Bluetooth technology. In other words, a Bluetooth device does not have built-in Wi-Fi, cellular data and other modules, and cannot directly connect to the Internet through these methods. Instead, it uses Bluetooth technology to communicate with other nearby devices over short distances. For example, a Bluetooth device can be a smart watch or Bluetooth headset that does not have an Internet connection but has Bluetooth functionality.

[0025] The vehicle-mounted device is a device with networking capability and Bluetooth function. The device can be integrated into the vehicle-mounted terminal or deployed as a separate device in other locations of the vehicle. This is not specifically limited in the embodiments of the present application. The vehicle-mounted device can be connected to the management platform through Internet technology, or it can be connected to the Bluetooth device through Bluetooth technology. Specifically, the intelligent terminal establishes a communication connection with the management platform through the Message Queue Telemetry Transmission (Hypertext Transfer Protocol Secure, MQTT) protocol.

[0026] The vehicle-mounted device can be installed by the user after the vehicle leaves the factory, without the need to be installed during the vehicle production process. The after-installation solution of the vehicle-mounted device can provide higher flexibility independent of T-BOX, giving the user the right to choose, while also reducing the hardware cost of the vehicle leaving the factory.

[0027] A smart terminal refers to an electronic device that can run an operating system, has a watch management application installed, and can exchange data over the network. For example, a smart terminal can be a mobile device with networking capabilities, such as a mobile phone. Furthermore, the smart terminal can be connected to the management platform through Internet technology, or it can be connected to a Bluetooth device through Bluetooth technology. Specifically, the smart terminal establishes a communication connection with the management platform through Hypertext Transfer Protocol Secure (HTTPS).

[0028] The management platform can also become a car digital key business platform, which can be accessed by vehicle-mounted devices and smart terminals through Internet technology. The management platform allows users to replace traditional physical car keys with smartphones or other smart devices. The management platform usually combines mobile applications, cloud services, and vehicle-side hardware and software support to provide a safe and convenient way to control vehicle access rights.

[0029] Based on the management system of the automobile digital key, the following introduces the management method of the automobile digital key. Figure 1 As shown, the method for managing a car digital key provided in the embodiment of the present application mainly includes steps S101-S106.

[0030] S101. Send a digital key activation request to a management platform using a smart terminal, where the digital key activation request includes vehicle information of the vehicle and device information of the Bluetooth device.

[0031] The vehicle information of the vehicle is the vehicle information of the vehicle on which the vehicle-mounted device is deployed.

[0032] Among them, the digital key activation request refers to the user's request to the management platform through a specific application or service to activate and configure the digital key function of his vehicle. The device information of the Bluetooth device can be the Bluetooth device identification number (Identity document, ID), the security element (Secure Element, SE) ID or the Bluetooth device serial number (International Mobile Equipment Identity, IMEI) and other information that can represent the Bluetooth identity. The device information of the Bluetooth device can be transmitted by the Bluetooth device to the smart terminal via a Bluetooth connection. The Bluetooth device refers to a Bluetooth device that wants to activate the digital key function of the car but does not have an Internet connection.

[0033] Vehicle refers to the vehicle that needs to activate the digital key function of the car, that is, the vehicle deployed with the vehicle-mounted device. Vehicle information includes vehicle identification number (VIN) code, vehicle color, vehicle brand, vehicle model and other information. Or the vehicle information only includes the VIN code. The vehicle information can be queried by the smart terminal on the platform of the vehicle OEM or vehicle manufacturer through the VIN code. It can also be manually entered into the smart terminal by the user after viewing it on the vehicle.

[0034] In a possible implementation, a watch management application (Application, APP) is downloaded and installed in the smart terminal. The user can enter the device information of the Bluetooth device and the vehicle information of the vehicle in the key activation interface of the watch management APP, and trigger the activation control in the key activation interface. In response to the user's triggering operation on the activation control, the smart terminal generates a digital key activation request based on the device information of the Bluetooth device and the vehicle information of the vehicle, and sends the digital key activation request to the management platform.

[0035] Further, after the smart terminal sends a digital key activation request to the management platform, the digital key information polling request is started. In other words, after the smart terminal sends a digital key activation request to the management platform, the digital key information sent by the management platform is polled.

[0036] S102: After receiving the digital key activation request, the management platform creates the digital key information of the vehicle based on the vehicle information and the device information of the Bluetooth device.

[0037] Among them, digital key information usually includes the following: unique identifier, encryption information, access rights, validity period, number of uses, user information, device information, usage conditions, recovery information, etc. Among them, the unique identifier is a unique identifier for each digital key, which is used to distinguish different keys. Encryption information is to ensure information security, and only authorized devices can decrypt and use it. Access rights refer to the fact that the digital key may contain access rights levels, which define the resources or services that the digital key holder can access. Validity period refers to the fact that some digital keys may have time limits, for example, they can only be valid on a specific date or time period. Number of uses refers to the fact that some digital keys may have a limit on the number of uses, and once the limit is reached, the key will become invalid. User information refers to the fact that the digital key may contain the user's identity information, such as user name, user ID, etc. Device information refers to the fact that the digital key may contain device information associated with the key, such as device model, serial number, etc. Usage conditions refer to the fact that there may be specific usage conditions or terms, which may be encoded in the digital key. Recovery information refers to the fact that if the digital key is lost or stolen, it may contain relevant information for recovery or reporting loss.

[0038] After receiving the digital key activation request, the management platform parses the digital key activation request to obtain the vehicle information of the vehicle and the device information of the Bluetooth device. When the vehicle information only includes the VIN code, the management platform queries the vehicle information database for the vehicle information of the vehicle to which the VIN code belongs. The vehicle information may include vehicle brand, vehicle signal, vehicle color, etc.

[0039] Furthermore, the management platform creates the digital key information of the vehicle based on all the information of the vehicle and the device information of the Bluetooth device. The specific process of the management platform creating the digital key information is not repeated in this embodiment.

[0040] S103: Use the management platform to send the digital key information of the vehicle to the vehicle-mounted device and the smart terminal respectively.

[0041] In one possible implementation, after the management platform creates the digital key information, it sends the digital key information to the vehicle-mounted device through the MQTT network. At this time, the management platform can wait for the writing result of the vehicle-mounted device. After the management platform receives the digital key activation success message feedback from the vehicle-mounted device, it sends the digital key information to the smart terminal through the HTTS network.

[0042] In another possible implementation, after the management platform creates the digital key information, it sends the digital key information to the vehicle-mounted device through the MQTT network, and at the same time sends the digital key information to the smart terminal through the HTTS network.

[0043] S104: Use the smart terminal to send the digital key information of the vehicle to the Bluetooth device.

[0044] In step S101, after the smart terminal sends a digital key activation request to the management platform, it starts to poll the digital key information sent by the management platform. If the smart terminal polls the digital key information sent by the management platform, it sends the digital key information to the Bluetooth device.

[0045] Furthermore, a Bluetooth connection is established between the smart terminal and the Bluetooth device, and the smart terminal sends the digital key information to the Bluetooth device through the Bluetooth connection. In this way, the Bluetooth device without networking function can receive the digital key information through the smart terminal.

[0046] S105. Receive and store the digital key information of the vehicle sent by the smart terminal using a Bluetooth device.

[0047] After the Bluetooth device receives the digital key information of the vehicle sent by the smart terminal, it saves the digital key information locally and feeds back an activation success message to the smart terminal. After receiving the activation success message, the smart terminal sends the activation success message to the management platform, and the management platform marks the digital key information as a successful Bluetooth device activation. At this point, the car digital key activation process has been completed, and the car digital key has been successfully activated and can be used normally. By operating the Bluetooth connection in the Bluetooth device, the Bluetooth device and the vehicle-mounted device are paired for the first time. After the pairing is successful, it will automatically connect in the disconnected state within the preset range.

[0048] S106. After establishing a Bluetooth connection with the Bluetooth device using the vehicle-mounted device, authenticate the Bluetooth device based on the digital key information sent by the Bluetooth device, and instruct the vehicle to perform corresponding operations after the authentication is successful.

[0049] The vehicle-mounted device detects that the Bluetooth connection with the Bluetooth device is completed, initiates Bluetooth authentication confirmation to the Bluetooth device, and the Bluetooth authentication between the vehicle-mounted device and the Bluetooth device is successful. The vehicle-mounted device calculates the distance between the Bluetooth device and the vehicle. When the distance is less than the set distance threshold, the vehicle is controlled to perform corresponding operations.

[0050] Among them, the corresponding operations include door locking, door unlocking, window lifting, trunk switch, air conditioning switch, one-button parking, vehicle summoning, vehicle positioning, etc.

[0051] The embodiment of the present application provides a method and system for managing a digital car key. The management method is applied to a management system for a digital car key. The management system includes a Bluetooth device, an on-board device, an intelligent terminal, and a management platform. The Bluetooth device does not have a networking function, and the on-board device is deployed on the vehicle and has a networking function; a communication connection is established between the on-board device and the management platform, a communication connection is established between the intelligent terminal and the management platform, and a Bluetooth connection is established between the intelligent terminal and the Bluetooth device; the method includes: using the intelligent terminal to send a digital key activation request to the management platform, the digital key activation request includes vehicle information of the vehicle, and the vehicle information of the vehicle is the vehicle information of the vehicle where the on-board device is deployed. Vehicle information and device information of Bluetooth devices; after receiving the digital key activation request using the management platform, create the vehicle's digital key information based on the vehicle information and the device information of the Bluetooth device; use the management platform to send the vehicle's digital key information to the vehicle-mounted device and the smart terminal respectively; use the smart terminal to send the digital key information to the Bluetooth device; use the Bluetooth device to receive and store the vehicle's digital key information sent by the smart terminal, and the digital key information is used to instruct the vehicle-mounted device to authenticate the Bluetooth device based on the digital key information sent by the Bluetooth device after the Bluetooth device establishes a Bluetooth connection with the vehicle-mounted device, and instruct the vehicle to perform corresponding operations after the authentication is passed. In this embodiment, through the coordinated use of the management platform and the smart terminal, the digital key information is sent to the Bluetooth device that does not have the networking function, so that the Bluetooth device that does not have the networking function can use the digital key, and then the electronic products that do not have the networking function can also realize the senseless control of the vehicle, realizing the diversity of vehicle control methods. The communication module hardware and development costs of Wi-Fi, SIM, and eSIM of smart watches are eliminated, and the use threshold of smart watches in the field of digital car keys is reduced.

[0052] Based on the above embodiments, the present application further optimizes the management method of the automobile digital key, such as Figure 3 As shown, the optimized automobile digital key management method mainly includes the following steps:

[0053] S201. Obtain device information of a Bluetooth device using a smart terminal.

[0054] A Bluetooth device includes a Bluetooth module and a security element. The Bluetooth module in a Bluetooth device has low-power communication capabilities, and the security element has security authentication, security encryption, and security storage capabilities. It is a commonly used security component in electronic devices, usually used for encryption authentication and secure storage.

[0055] Bluetooth devices do not have networking capabilities. All functions involving network interaction require connecting to the watch management app in the smart terminal for auxiliary operation.

[0056] A Bluetooth connection is established between the smart terminal and the Bluetooth device, and the smart terminal obtains device information of the Bluetooth device through the Bluetooth connection, and the device information includes information such as SEID and IMEI.

[0057] S202: Using a smart terminal to obtain an account ID input by a user.

[0058] The account identifier may include an account name, such as a user-defined name, a user's mobile phone number, a user's email address, etc.

[0059] The watch management APP in the smart terminal obtains the account identification input by the user through the UI page, and generates an account registration request based on the account identification and device information in response to the account registration instruction input by the user.

[0060] Furthermore, the intelligent terminal uses its own hardware security module to generate a key pair, which is mainly used to encrypt and decrypt the interactive data between the intelligent terminal and the management platform. When sending an account registration request to the management platform, the public key in the key pair is sent to the management platform.

[0061] S203: Use the smart terminal to send an account registration request to the management platform, where the account registration request includes an account identifier and device information.

[0062] The account registration request is sent to the management platform using the HTTS protocol between the smart terminal and the management platform. Further, the account registration request and the public key in the key pair are sent to the management platform using the HTTS protocol between the smart terminal and the management platform.

[0063] S204: Using the management platform to respond to the account registration request, generate a user account based on the account identifier, and bind the user account to the device information of the Bluetooth device.

[0064] After receiving the account registration request, the management platform parses the account registration request to obtain the account identifier and device information. The management platform uses the account identifier to create a user account and binds the user account to the device information.

[0065] For example, after receiving an account registration request, the management platform parses the account registration request to obtain the mobile phone number and SEID. The management platform uses the mobile phone number to create a user account and binds the user account to the SEID. Binding the user account to the SEID is used to indicate that the Bluetooth device is the digital key applied for by the account, and it also facilitates the subsequent management of digital keys.

[0066] S205: Use the smart terminal to send a digital key activation request to the management platform, where the digital key activation request includes vehicle information of the vehicle and device information of the Bluetooth device.

[0067] The vehicle information is the vehicle information of the vehicle on which the vehicle-mounted device is deployed.

[0068] S206: After receiving the digital key activation request, the management platform creates the digital key information of the vehicle based on the vehicle information and the device information of the Bluetooth device.

[0069] S205 and S206 provided in the embodiment of the present application are the same as the execution process of S102 and S103 provided in the above embodiment. For details, please refer to the description in the above embodiment, which will not be repeated in the embodiment of the present application.

[0070] S207: Use the management platform to send the vehicle's digital key information and primary key to the vehicle-mounted device.

[0071] The primary key, also known as the master key or local main key (LMK), is mainly used to protect the secondary key and keep the digital key information confidential.

[0072] The first-level key can be created using a symmetric encryption algorithm, an asymmetric encryption algorithm, a random number generator, etc. The method of creating the first-level key is no longer limited in the embodiments of the present application.

[0073] When creating the digital key information of the vehicle, the management platform creates a first-level secret key, sends the digital key information and the first-level secret key of the vehicle to the vehicle-mounted device via MQTT, and waits for feedback from the vehicle-mounted terminal.

[0074] S208: Receive and store the digital key information and primary key of the vehicle using the vehicle-mounted device.

[0075] After receiving the vehicle's digital key information and primary key through MQTT, the on-board device stores the vehicle's digital key information and primary key in its own security element.

[0076] S209: Send an activation success message to the management platform using the vehicle-mounted device.

[0077] After the on-board device stores the vehicle's digital key information and primary key in its own security element, it generates an activation success message and feeds the activation success message back to the management platform. The activation success message is used to indicate to the management platform that the on-board device has successfully activated the car's digital key.

[0078] S210. After receiving the activation success message using the management platform, the digital key information is marked as successful activation of the vehicle-mounted device, and a secondary key is dispersed based on the primary key.

[0079] After receiving the activation success message, the management platform marks the digital key information as successful activation of the vehicle-mounted device, which is used to indicate that the digital key of the vehicle-mounted device has been successfully activated.

[0080] A key derivation function (KDF) is used to derive the secondary key from the primary key.

[0081] In one possible implementation, the vehicle's digital key information and secondary key are sent to a smart terminal using a management platform, including: using the management platform to encrypt the vehicle's digital key information and secondary key based on a public key in a key pair, and sending the encrypted vehicle's digital key information and secondary key to the smart terminal.

[0082] Since the smart terminal sends the public key in the key pair to the management platform at the same time as sending the account registration request, the management platform can use the public key to encrypt the vehicle's digital key information and secondary key to improve the security of the vehicle's digital key information and secondary key.

[0083] S211. Use the management platform to send the vehicle's digital key information and secondary key to the smart terminal.

[0084] The management platform sends the vehicle's digital key information and secondary key to the smart terminal through the HTTS protocol. The management platform sends the vehicle's digital key information and secondary key encrypted with the public key to the smart terminal through the HTTS protocol.

[0085] S212: Use the smart terminal to send a digital key activation request to the Bluetooth device, where the digital key activation request includes the digital key information and the secondary key of the vehicle.

[0086] The smart terminal sends a digital key activation request to the Bluetooth device through the Bluetooth connection between the Bluetooth device and the Bluetooth device.

[0087] In one possible implementation, digital key information is sent to a Bluetooth device using a smart terminal, including: using the smart terminal to decrypt the encrypted digital key information and secondary key of the vehicle based on a private key in a key pair; and using the smart terminal to send the decrypted digital key information and secondary key of the vehicle to the Bluetooth device.

[0088] Since the management platform uses the public key to encrypt the digital key information and secondary key of the vehicle, the smart terminal needs to use the private key in the key pair to decrypt the encrypted digital key information and secondary key of the vehicle to obtain the digital key information and secondary key of the vehicle, so as to ensure the security of the digital key information and secondary key of the vehicle.

[0089] S213. Receive and store the digital key information of the vehicle sent by the smart terminal using a Bluetooth device.

[0090] Using a Bluetooth device to receive and store digital key information of a vehicle sent by a smart terminal includes: using a Bluetooth module in the Bluetooth device to receive a digital key activation request sent by the smart terminal, and storing the digital key information and secondary key of the vehicle included in the digital key activation request in a security element in the Bluetooth device.

[0091] After the Bluetooth module of the Bluetooth device receives the digital key activation request, it parses the digital key activation request, obtains the digital key information and secondary key of the sent vehicle, and stores the digital key information and secondary key of the vehicle in its own security element to improve data security.

[0092] After the Bluetooth device stores the vehicle's digital key information and secondary key in its own security element, it generates an activation success message.

[0093] S214: Send an activation success message to the smart terminal using the Bluetooth device.

[0094] The Bluetooth device sends an activation success message to the smart terminal through the Bluetooth connection between the device and the smart terminal.

[0095] S215. Send an activation success message to the management platform using the smart terminal.

[0096] The intelligent terminal sends an activation success message to the management platform through the HTTS protocol.

[0097] S216. After receiving the activation success message using the management platform, the digital key information is marked as successful activation of the Bluetooth device.

[0098] After the management platform receives the activation success message, it marks the activation success of the Bluetooth device of the digital key. At this time, the digital key has completed the activation and activation process. The digital key can achieve keyless entry or keyless start.

[0099] In the embodiment of the present application, a Bluetooth device that does not carry a Wi-Fi module, a cellular data module, and only supports BLE and SE is used, and a vehicle-mounted device of BLE and SE is subsequently installed on the vehicle. BLE and SE are connected and communicated through IIC to form a powered module device. The former is integrated inside the Bluetooth device, and the latter can be integrated in the vehicle control system device, or it can be subsequently arranged in other hidden locations of the vehicle. In terms of process, the control function of the Bluetooth device on the vehicle is realized through the use of the management platform and the smart terminal APP. The hardware and development costs of the communication modules of Wi-Fi and cellular data of smart watches are eliminated, the threshold for the use of smart watches in the field of digital car keys is lowered, and storage, authentication, offline, and non-sensing unlocking of vehicles are realized based on security chips.

[0100] After the digital key information is successfully sent to the Bluetooth device, the Bluetooth device can be used to control the car independently without the smart terminal. The control capability is designed according to ICCE and CCC specifications, such as keyless entry and keyless start. The key can also be shared to create sub-keys for others to use, and the purpose, validity period and usage rights of the key can be assigned by yourself.

[0101] In addition, the smart terminal has the function of remotely freezing the car keys, ensuring the safety of the vehicle in time when the watch is lost.

[0102] Based on the above embodiments, the present application further optimizes the management method of the automobile digital key, such as Figure 4 As shown, the optimized automobile digital key management method mainly includes the following steps S401-S406.

[0103] The above embodiment mainly introduces the use of the smart terminal and the management platform to complete the activation and activation of the car digital key between the Bluetooth device and the vehicle-mounted device. In the embodiment of the present application, the use process of the car digital key between the Bluetooth device and the vehicle-mounted device after the activation and activation of the car digital key is described in detail.

[0104] S401. After scanning a Bluetooth device using the Bluetooth module of the vehicle-mounted device, establish a Bluetooth connection with the Bluetooth device, and receive digital key information and operation instructions transmitted by the Bluetooth device through the Bluetooth connection.

[0105] In the application embodiment, a vehicle-mounted device can be subsequently installed on the vehicle. The vehicle device mainly includes a security element and a Bluetooth module. A body controller is also deployed on the vehicle. The Bluetooth module and the security element are connected by establishing an integrated circuit bus I2C, and the vehicle-mounted device is connected to the body controller via a controller area network bus CAN.

[0106] Furthermore, the vehicle-mounted device has low-power communication capabilities and security authentication, security encryption, and security storage capabilities, among which SE is a common security component in electronic devices, usually used for encryption authentication and secure storage. IIC, also known as "I2C", is a serial communication bus that uses two signal lines for communication, a clock line SCL and a data line SDA. The CAN bus is a real-time serial communication protocol bus that is commonly used for communication between different components in a car and is one of the most widely used field buses in the world. The body controller (Body Control Module, BCM), an electronic control unit used to control the body electrical system, is one of the important components of a car. Common functions include controlling windows, controlling rearview mirrors, controlling vehicle unlocking, controlling vehicle locking, and so on.

[0107] The vehicle-mounted device and the Bluetooth device perform the first pairing connection. After the pairing is completed, if the vehicle-mounted device and the Bluetooth device are within the Bluetooth scanning range, the vehicle-mounted device and the Bluetooth device can automatically establish a Bluetooth connection.

[0108] Specifically, the Bluetooth module of the vehicle-mounted device is in the turned-on state and continuously scans the surrounding devices. After scanning the above-mentioned Bluetooth device (the Bluetooth module of the Bluetooth device is in the turned-on state), the Bluetooth module of the vehicle-mounted device establishes a Bluetooth connection with the Bluetooth module of the Bluetooth device. Then, the Bluetooth device sends the digital key information stored in the security element to the vehicle-mounted terminal through the Bluetooth connection.

[0109] In another implementation, the Bluetooth device uses the secondary key to encrypt the digital key information in the security element, and sends the digital key information encrypted by the secondary key to the vehicle-mounted device.

[0110] S402: Utilize the vehicle-mounted device to perform authentication based on the digital key information transmitted by the Bluetooth device and the digital key information stored in its own security element.

[0111] Authentication refers to the process of verifying the identity of a Bluetooth device to ensure that the Bluetooth device is who it claims to be.

[0112] From the above, it can be seen that the management platform sends a digital key information of the vehicle to the vehicle-mounted device, and the vehicle-mounted device stores the digital key information in the security element. After the vehicle-mounted device receives the digital key information transmitted by the Bluetooth device through the Bluetooth connection, it reads the digital key information stored in itself from its own security element. The two digital key information are matched and verified, mainly including: checking whether the keys match, confirming the timestamp or serial number, etc. After the matching verification is passed, it is confirmed that the authentication is successful, and S403 is executed. If the matching verification fails, it is confirmed that the authentication fails, and the vehicle-mounted device feeds back a message that the authentication fails to the Bluetooth device.

[0113] Furthermore, the management platform sends a copy of the vehicle's digital key information and a primary key to the vehicle-mounted device. The Bluetooth device encrypts the digital key information in the security element using the secondary key, and sends the digital key information encrypted with the secondary key to the vehicle-mounted device.

[0114] The vehicle-mounted device uses its stored primary key to verify the secondary key of the Bluetooth device. Specifically, the vehicle-mounted device uses the same key derivation function to disperse the secondary key based on the primary key, and uses the dispersed secondary key to decrypt the encrypted digital key information. If the decryption is successful, the vehicle-mounted device confirms that the Bluetooth device holds the correct primary key, the authentication is passed, and access or further operations are allowed. If the decryption fails, the authentication fails, and the vehicle-mounted device denies access to the Bluetooth device.

[0115] Furthermore, the encrypted digital key information is decrypted using the dispersed secondary key. If the decryption is successful, the vehicle-mounted device confirms that the Bluetooth device holds the correct primary key and compares the decrypted digital key information with the digital key information stored in itself. If the two digital key information are consistent, the authentication is passed and access or further operations are allowed.

[0116] S403: After the authentication is passed, the vehicle-mounted device is used to calculate the distance between the Bluetooth device and the vehicle-mounted device.

[0117] The distance between the Bluetooth device and the vehicle-mounted device may also be the distance between the Bluetooth device and the vehicle, and the distance may represent the distance between the Bluetooth device holder and the vehicle.

[0118] The distance between the Bluetooth device and the vehicle unit is calculated by the Received Signal Strength Indicator (RSSI) value, which reflects the strength of the radio signal received from a vehicle unit. Generally, the stronger the signal, the closer the distance between the two devices.

[0119] To calculate the distance between the Bluetooth device and the vehicle-mounted device through the time difference of arrival (TDoA), multiple Bluetooth antennas need to be deployed on the vehicle to determine the location of the Bluetooth device. By measuring the time difference of the signal arriving at different Bluetooth antennas, the location and distance of the Bluetooth device can be calculated using triangulation.

[0120] The distance between the Bluetooth device and the vehicle unit is calculated by the time of arrival (ToA), which refers to the time it takes for the signal to travel from the Bluetooth device to the vehicle unit. By measuring this time and multiplying it by the speed of light, the distance between the Bluetooth device and the vehicle unit can be directly obtained.

[0121] The embodiment of the present application only illustrates the method for calculating the distance between the Bluetooth device and the vehicle-mounted device, but does not limit it.

[0122] S404: When the distance is less than a set distance threshold, the vehicle-mounted device sends an operation instruction to the vehicle body controller.

[0123] The set distance threshold is a value used to represent the distance between the Bluetooth device and the vehicle-mounted device, and the set distance threshold may be 1 meter or 2 meters.

[0124] If the distance between the Bluetooth device and the vehicle-mounted device is less than the set distance threshold, it indicates that the holder of the Bluetooth device is close to the vehicle, or very close to the vehicle, and may want to control the vehicle. At this time, the operation instructions sent by the Bluetooth device are forwarded to the body controller.

[0125] If the distance between the Bluetooth device and the vehicle-mounted device is greater than the set distance threshold, it indicates that the holder of the Bluetooth device is far away from the vehicle and has little intention to control the vehicle. Therefore, the operation instruction is discarded and not processed.

[0126] S405: Utilize the vehicle body controller to execute the operation instruction.

[0127] Among them, the operation instructions include door locking instructions, door unlocking instructions, window lifting instructions, trunk switch instructions, air conditioning switch instructions, one-button parking instructions, vehicle summoning instructions, vehicle positioning instructions, etc.

[0128] BCM analyzes the received operation instructions, determines their source and content, and judges the current state and required operation based on the preset logic and algorithm. It verifies the input operation instructions to ensure the validity and integrity of the data. Based on the processing results, BCM generates corresponding control signals and sends them to actuators (such as relays, motors, LED lights, etc.).

[0129] In an embodiment of the present application, the vehicle-mounted terminal authenticates the Bluetooth device, and then determines the distance between the vehicle and the person after the authentication is passed. When the distance is small, the vehicle executes the operation instructions to further improve the security of the digital key.

[0130] Based on the above embodiment, the system also includes a UWB module, and the method also includes: using the vehicle-mounted device to send the operation instruction to the body controller; using the UWB module to detect the distance between the vehicle and the Bluetooth device; when the distance is less than the set distance threshold, using the body controller to execute the operation instruction.

[0131] UWB modules need to be deployed in vehicle-mounted devices as well as in Bluetooth devices.

[0132] In an embodiment of the present application, after the vehicle-mounted device authenticates the Bluetooth device, it directly sends an operation instruction to the BCM. After receiving the operation instruction, the BCM sends a ranging instruction to the UWB module. After receiving the ranging instruction, the UWB module measures the distance between the vehicle and the Bluetooth device, and feeds the distance back to the BCM. The BCM determines the relationship between the distance and the set distance threshold. If the distance between the Bluetooth device and the vehicle-mounted device is less than the set distance threshold, the BCM executes the operation instruction. If the distance between the Bluetooth device and the vehicle-mounted device is greater than the set distance threshold, the BCM discards the operation instruction and does not process it.

[0133] In the embodiment of the present application, the distance positioning capability is transferred to UWB, which will bring more accurate and stable positioning signals.

[0134] Figure 2 Schematic diagram of a management system for digital car keys in an embodiment of the present application. Figure 2 As shown, the management system 10 of the automobile digital key provided in the embodiment of the present application includes a Bluetooth device 11, a vehicle-mounted device 12, a smart terminal 13 and a management platform 14. The Bluetooth device 11 does not have an Internet connection function, and the vehicle-mounted device 12 is deployed on the vehicle and has an Internet connection function; a communication connection is established between the vehicle-mounted device 12 and the management platform 14, a communication connection is established between the smart terminal 13 and the management platform 14, and a Bluetooth connection is established between the smart terminal 14 and the Bluetooth device 11.

[0135] The smart terminal 13 is used to send a digital key activation request to the management platform, the digital key activation request includes vehicle information of the vehicle and device information of the Bluetooth device, the vehicle information of the vehicle is the vehicle information of the vehicle on which the on-board device is deployed; and send the digital key information of the vehicle to the Bluetooth device; the management platform 14 is used to create the digital key information of the vehicle based on the vehicle information of the vehicle and the device information of the Bluetooth device after receiving the digital key activation request; and send the digital key information of the vehicle to the on-board device and the smart terminal respectively; the Bluetooth device 11 is used to receive and store the digital key information of the vehicle sent by the smart terminal, the digital key information is used for instructing the on-board device to authenticate the Bluetooth device based on the digital key information sent by the Bluetooth device after the Bluetooth device establishes a Bluetooth connection with the on-board device, and instruct the vehicle to perform corresponding operations after the authentication is passed.

[0136] The embodiment of the present application provides a method and system for managing a digital key of an automobile. The method is applied to a management system of a digital key of an automobile. The management system includes a Bluetooth device, an on-board device, an intelligent terminal and a management platform. The Bluetooth device does not have an Internet connection function, and the on-board device is set to be deployed in the vehicle and has an Internet connection function; a communication connection is established between the on-board device and the management platform, a communication connection is established between the intelligent terminal and the management platform, and a Bluetooth connection is established between the intelligent terminal and the Bluetooth device; the intelligent terminal is used to send a digital key activation request to the management platform, the digital key activation request includes vehicle information of the vehicle and device information of the Bluetooth device, and the vehicle information of the vehicle is the vehicle information of the vehicle deployed with the on-board device; and send digital key information to the Bluetooth device; the management platform is used to create digital key information of the vehicle based on the vehicle information of the vehicle and the device information of the Bluetooth device after receiving the digital key activation request; and send the digital key information of the vehicle to the on-board device and the intelligent terminal respectively; the Bluetooth device is used to receive and store the digital key information of the vehicle sent by the intelligent terminal, and the digital key information is used to instruct the on-board device to authenticate the Bluetooth device based on the digital key information sent by the Bluetooth device after the Bluetooth device establishes a Bluetooth connection with the on-board device, and instruct the vehicle to perform corresponding operations after the authentication is passed. In this embodiment, the digital key information is sent to the Bluetooth device without networking function through the coordinated use of the management platform and the smart terminal, so that the Bluetooth device without networking function can use the digital key, and then the electronic products without networking function can also realize the senseless control of the vehicle, realizing the diversity of vehicle control methods. The communication module hardware and development costs of the Wi-Fi, SIM, and eSIM of the smart watch are eliminated, and the use threshold of the smart watch in the field of digital car keys is lowered.

[0137] In a possible implementation, the management platform is specifically used to send the digital key information and the primary key of the vehicle to the vehicle-mounted device; after receiving the activation success message, the digital key information is marked as the vehicle-mounted device is successfully activated, and the secondary key is dispersed based on the primary key; the digital key information and the secondary key of the vehicle are sent to the smart terminal. The vehicle-mounted device is specifically used to receive and store the digital key information and the primary key of the vehicle, and send the activation success message to the management platform.

[0138] In a possible implementation, the Bluetooth device includes a Bluetooth module and a security element; the smart terminal is specifically used to send a digital key activation request to the Bluetooth device, and the digital key activation request includes the digital key information and the secondary key of the vehicle; the Bluetooth module in the Bluetooth device is specifically used to receive the digital key activation request sent by the smart terminal; the security element in the Bluetooth device is specifically used to store the digital key information and the secondary key of the vehicle included in the digital key activation request. In a possible implementation, the Bluetooth device is specifically used to store the digital key information and the secondary key of the vehicle included in the digital key activation request in the security element in the Bluetooth device, and then send an activation success message to the smart terminal; the smart terminal is also used to send an activation success message to the management platform; the management platform is also used to mark the digital key information as a successful Bluetooth device activation after receiving the activation success message.

[0139] In one possible implementation, the management platform is also used to receive a public key in a key pair sent by a smart terminal, where the key pair is generated by a security element in the smart terminal; encrypt the vehicle's digital key information and secondary key based on the public key in the key pair, and send the encrypted vehicle's digital key information and secondary key to the smart terminal; the smart terminal is specifically used to decrypt the encrypted vehicle's digital key information and secondary key based on the private key in the key pair; and send the decrypted vehicle's digital key information and secondary key to the Bluetooth device.

[0140] In one possible implementation, the vehicle-mounted device includes a security element and a Bluetooth module, and a body controller is also deployed on the vehicle. The Bluetooth module and the security element are connected by establishing an integrated circuit bus I2C, and the vehicle-mounted device and the body controller are connected through a controller area network bus CAN; the Bluetooth module of the vehicle-mounted device is used to establish a pairing connection with the Bluetooth device after scanning the Bluetooth device, and receive digital key information and operation instructions transmitted by the Bluetooth device through the pairing connection; authentication is performed based on the digital key information transmitted by the Bluetooth device and the digital key information stored in its own security element; after the authentication is passed, the distance between the Bluetooth device and the vehicle-mounted device is calculated; when the distance is less than a set distance threshold, the operation instruction is sent to the body controller; the body controller is used to execute the operation instruction.

[0141] In a possible implementation, the operation instruction includes: a keyless entry instruction and a keyless start instruction.

[0142] In one possible implementation, the smart terminal is also used to obtain device information of the Bluetooth device; obtain the account identifier input by the user; send an account registration request to the management platform, the account registration request includes the account identifier and device information; use the management platform, specifically to respond to the account registration request, generate a user account based on the account identifier, and bind the user account with the device information of the Bluetooth device.

[0143] In one possible implementation, the system also includes a UWB module, a vehicle-mounted device, for sending operation instructions to the body controller; the UWB module is used to detect the distance between the vehicle and the Bluetooth device; and the body controller is used to execute the operation instructions when the distance is less than a set distance threshold.

[0144] The management system for automobile digital keys provided in the embodiments of the present application can execute the management method for automobile digital keys provided in any embodiment of the present invention, and has the functional modules and beneficial effects corresponding to the execution method.

[0145] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0146] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for managing a digital key of a car, characterized in that: The management method is applied to a management system for automobile digital keys, which includes a Bluetooth device, an on-board device, an intelligent terminal, and a management platform. The Bluetooth device does not have an Internet connection function, and the on-board device is deployed on the vehicle and has an Internet connection function; a communication connection is established between the on-board device and the management platform, a communication connection is established between the intelligent terminal and the management platform, and a Bluetooth connection is established between the intelligent terminal and the Bluetooth device; The method comprises: Using the smart terminal to send a digital key activation request to the management platform, the digital key activation request includes vehicle information of the vehicle and device information of the Bluetooth device, and the vehicle information is vehicle information of the vehicle on which the vehicle-mounted device is deployed; After receiving the digital key activation request using the management platform, creating the digital key information of the vehicle based on the vehicle information of the vehicle and the device information of the Bluetooth device; Using the management platform to send the digital key information of the vehicle to the vehicle-mounted device and the smart terminal respectively; Using the smart terminal to send the digital key information of the vehicle to the Bluetooth device; The Bluetooth device is used to receive and store the digital key information of the vehicle sent by the smart terminal. The digital key information is used to instruct the vehicle-mounted device to authenticate the Bluetooth device based on the digital key information sent by the Bluetooth device after the Bluetooth device establishes a Bluetooth connection with the vehicle-mounted device, and to instruct the vehicle to perform corresponding operations after the authentication is passed.

2. The method according to claim 1, characterized in that Using the management platform to send the digital key information of the vehicle to the vehicle-mounted device and the smart terminal respectively includes: Using the management platform to send the digital key information and the primary key of the vehicle to the vehicle-mounted device; Using the vehicle-mounted device to receive and store the digital key information and the primary key of the vehicle, and sending an activation success message to the management platform; After receiving the activation success message by the management platform, marking the digital key information as the successful activation of the vehicle-mounted device, and distributing the secondary key based on the primary key; The management platform is used to send the digital key information of the vehicle and the secondary key to the smart terminal.

3. The method according to claim 2, characterized in that The Bluetooth device includes a Bluetooth module and a security element; Using the smart terminal to send the digital key information of the vehicle to the Bluetooth device includes: Using the smart terminal to send the digital key activation request to the Bluetooth device, the digital key activation request includes the digital key information of the vehicle and the secondary key; Receiving and storing the digital key information of the vehicle sent by the smart terminal using the Bluetooth device includes: The digital key activation request sent by the smart terminal is received by using the Bluetooth module in the Bluetooth device, and the digital key information of the vehicle and the secondary key included in the digital key activation request are stored in the security element in the Bluetooth device.

4. The method according to claim 3, characterized in that After storing the digital key information of the vehicle and the secondary key included in the digital key activation request in the security element in the Bluetooth device, the method further includes: Using the Bluetooth device to send an activation success message to the smart terminal; Using the smart terminal to send the activation success message to the management platform; After receiving the activation success message using the management platform, the digital key information is marked as the Bluetooth device being activated successfully.

5. The method according to claim 2, characterized in that: The method further comprises: Using the management platform to receive a public key in a key pair sent by the smart terminal, the key pair is generated by a security element in the smart terminal; Using the management platform to send the digital key information of the vehicle and the secondary key to the smart terminal includes: Using the management platform to encrypt the digital key information of the vehicle and the secondary key based on the public key in the key pair, and sending the encrypted digital key information of the vehicle and the secondary key to the smart terminal; Using the smart terminal to send the digital key information to the Bluetooth device includes: Decrypting the encrypted digital key information of the vehicle and the secondary key using the smart terminal based on the private key in the key pair; The smart terminal is used to send the decrypted digital key information of the vehicle and the secondary key to the Bluetooth device.

6. The method according to claim 5, characterized in that The vehicle-mounted device includes a security element and a Bluetooth module, and a body controller is also deployed on the vehicle. The Bluetooth module and the security element are connected via an integrated circuit bus I2C, and the vehicle-mounted device is connected to the body controller via a controller area network bus CAN; After the Bluetooth module of the vehicle-mounted device scans the Bluetooth device, a Bluetooth connection with the Bluetooth device is established, and digital key information and operation instructions transmitted by the Bluetooth device are received through the Bluetooth connection; Utilizing the vehicle-mounted device to perform authentication based on the digital key information transmitted by the Bluetooth device and the digital key information stored in its own security element; Utilizing the vehicle-mounted device to calculate the distance between the Bluetooth device and the vehicle-mounted device after authentication is passed; Using the vehicle-mounted device to send the operation instruction to the vehicle body controller when the distance is less than a set distance threshold; The operating instruction is executed by the vehicle body controller.

7. The method according to claim 6, characterized in that The operation instructions include: a keyless entry instruction and a keyless start instruction.

8. The method according to claim 5, characterized in that The method further comprises: Using the smart terminal to obtain device information of the Bluetooth device; Using the smart terminal to obtain an account ID input by a user; Using the smart terminal to send an account registration request to a management platform, wherein the account registration request includes the account identifier and the device information; The management platform is used to respond to the account registration request, generate a user account based on the account identifier, and bind the user account to the device information.

9. The method according to claim 6, characterized in that The system also includes a UWB module, and the method further includes: Using the vehicle-mounted device to send the operation instruction to the vehicle body controller; Detecting the distance between the vehicle and the Bluetooth device using the UWB module; When the distance is less than a set distance threshold, the vehicle body controller is used to execute the operation instruction.

10. A management system for automobile digital keys, characterized in that: The management system of the automobile digital key includes a Bluetooth device, an on-board device, an intelligent terminal and a management platform, wherein the Bluetooth device does not have an Internet connection function, and the on-board device is deployed on the vehicle and has an Internet connection function; a communication connection is established between the on-board device and the management platform, a communication connection is established between the intelligent terminal and the management platform, and a Bluetooth connection is established between the intelligent terminal and the Bluetooth device; The smart terminal is used to send a digital key activation request to the management platform, wherein the digital key activation request includes vehicle information of the vehicle and device information of the Bluetooth device, and the vehicle information of the vehicle is the vehicle information of the vehicle on which the vehicle-mounted device is deployed; and sending digital key information of the vehicle to the Bluetooth device; The management platform is configured to create the digital key information of the vehicle based on the vehicle information of the vehicle and the device information of the Bluetooth device after receiving the digital key activation request; and sending the digital key information of the vehicle to the vehicle-mounted device and the smart terminal respectively; The Bluetooth device is used to receive and store the digital key information of the vehicle sent by the smart terminal. The digital key information is used to instruct the vehicle-mounted device to authenticate the Bluetooth device based on the digital key information sent by the Bluetooth device after the Bluetooth device establishes a Bluetooth connection with the vehicle-mounted device, and to instruct the vehicle to perform corresponding operations after the authentication is passed.

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