Digital key sharing method and device, smart device and medium

Abstract

This invention discloses a digital key sharing method, apparatus, smart device, and medium. The method includes: a vehicle owner's device identifying a target friend's device based on an NFC channel and establishing a near-field secure communication channel with the target friend's device; detecting whether preset sharing confirmation conditions are met; and if the preset sharing confirmation conditions are met, sending shared key information to the target friend's device through the near-field secure communication channel; the shared key information carries application information for retrieving the shared key, and the target friend's device executes a preset shared key retrieval process according to the application information. This invention achieves digital key sharing through near-field interaction, offering high security and convenient operation, and can also provide users with a refreshing sharing experience through animated feedback.

Description

Technical Field

[0001] This invention relates to the field of digital car key technology, and more particularly to a digital key sharing method and device, smart device and medium. Background Technology

[0002] With the widespread adoption of mobile devices, vehicle digital keys based on mobile devices have developed rapidly and are now widely used. There is a significant demand for digital key sharing in real-life scenarios. Currently, the main methods for sharing digital keys in the automotive industry are as follows:

[0003] Webpage sharing: The car owner's device embeds the token used for digital key sharing into a webpage link, and sends this link to the friend's device through various means. The friend's device opens this webpage, logs in to their account, and then receives the key.

[0004] QR code sharing: The car owner generates a sharing code that can be recognized by other terminals according to certain rules using the token shared by the digital key. It can be an open standard code such as a barcode or QR code, or a private standard code similar to a WeChat mini-program code. After scanning the code with a friend's device, the user can receive the key.

[0005] Pairing code sharing: The car owner sends the digital key sharing token to a friend via SMS. The friend then pairs their mobile device with the vehicle, enters the token during the pairing process, and completes the key retrieval. This method is used for sharing car keys in Apple Wallet, for example.

[0006] Account sharing: The car owner can directly designate a friend's account information, and the friend can directly obtain this digital key after logging into the friend's account on the friend's device.

[0007] The inventors discovered that existing digital key sharing methods require relatively complex operations such as opening a webpage, opening a text messaging application, scanning a QR code, and specifying account information, which are inconvenient and negatively impact user experience. Therefore... Summary of the Invention

[0008] This invention provides a digital key sharing method, apparatus, smart device, and medium, aiming to improve the convenience of digital key sharing while avoiding the exposure of digital key sharing tokens and ensuring high sharing security.

[0009] In a first aspect, embodiments of the present invention provide a digital key sharing method applied to a vehicle owner's device, the method comprising: determining a target friend's device based on an NFC channel, and establishing a near-field secure communication channel with the target friend's device;

[0010] The system checks whether preset sharing confirmation conditions are met. If the preset sharing confirmation conditions are met, the system sends the sharing key information to the target friend's device through the near-field secure communication channel. The sharing key information carries application information for obtaining the sharing key, and the target friend's device executes a preset sharing key obtaining process based on the application information.

[0011] As one embodiment, the method further includes: monitoring the stage of the key sharing process and executing a process feedback event corresponding to the stage; the process feedback event includes: vibration or playing an animation.

[0012] As one embodiment, the monitoring key sharing process, at each stage, executes a process feedback event corresponding to that stage, including:

[0013] When the close-range secure communication channel is established, a dynamic connection animation is played to indicate the connection status between the vehicle owner's device and the target friend's device;

[0014] If the preset sharing confirmation conditions are met, a dynamic transmission animation is played to indicate the transmission of the sharing key information.

[0015] As one embodiment, the detection of whether a preset sharing confirmation condition is met includes:

[0016] Acquire NFC sensing status information and UWB ranging values ​​between the vehicle owner's device and the target friend's device;

[0017] Determine whether the sensing state information and the UWB ranging value meet a preset change pattern. If the preset change pattern is met, determine whether the preset sharing confirmation condition is met.

[0018] As one embodiment, determining whether the sensing state information and the UWB ranging value meet a preset change pattern includes:

[0019] When the distance between the vehicle owner's device and the target friend's device is within a preset distance range, and the perception state between the vehicle owner's device and the target friend's device changes, it is determined that the preset change mode is satisfied.

[0020] As one embodiment, the detection of whether a preset sharing confirmation condition is met includes:

[0021] When a preset screen operation is detected, the preset sharing confirmation conditions are determined to be met.

[0022] Secondly, embodiments of the present invention provide a digital key sharing method applied to a friend's device, the method comprising:

[0023] The vehicle owner's device is identified based on the NFC channel, and a short-range secure communication channel is established with the vehicle owner's device.

[0024] The vehicle owner's device sends shared key information via the short-range secure communication channel. The shared key information carries application information for retrieving the shared key.

[0025] The preset process for obtaining and sharing keys is executed based on the application information.

[0026] Thirdly, embodiments of the present invention provide a digital key sharing device configured in a vehicle owner's device, the device comprising:

[0027] The vehicle owner identification connection module is used to determine the target friend's device based on the NFC channel and establish a short-range secure communication channel with the target friend's device.

[0028] The data sharing module is used to detect whether preset sharing confirmation conditions are met. If the preset sharing confirmation conditions are met, the sharing key information is sent to the target friend's device through the near-field secure communication channel. The sharing key information carries application information for obtaining the sharing key, and the target friend's device executes a preset process for obtaining the sharing key based on the application information.

[0029] Fourthly, embodiments of the present invention provide a digital key sharing device configured on a friend's device, the device comprising:

[0030] The friend identification connection module is used to identify the vehicle owner's device based on the NFC channel and establish a short-range secure communication channel with the vehicle owner's device.

[0031] The shared key receiving module is used to receive shared key information sent by the vehicle owner's device through the short-range secure communication channel. The shared key information carries application information for retrieving the shared key.

[0032] The key sharing module is used to execute a preset key sharing process based on the application information.

[0033] Fifthly, embodiments of the present invention provide a smart device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the digital key sharing method as described above.

[0034] In a sixth aspect, embodiments of the present invention provide a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the digital key sharing method as described above.

[0035] Compared with the prior art, the technical solution provided by the embodiments of the present invention has at least the following positive effects:

[0036] In this embodiment of the invention, the vehicle owner's device determines the target friend's device based on the NFC channel and establishes a near-field secure communication channel with the target friend's device. Upon detecting that preset sharing confirmation conditions are met, the device sends the shared key information to the target friend's device through the near-field secure communication channel. The shared key information carries application information for retrieving the shared key. The target friend's device then executes a preset shared key retrieval process based on the application information. This application determines the target friend's device based on NFC signals, leveraging the security and convenience of near-field communication. A near-field secure communication channel is then established, and upon meeting preset sharing confirmation conditions, the shared key information is transmitted to the target friend's device through this channel. The target friend's device automatically executes the preset near-field key sharing process based on the application information. Throughout the entire sharing process, neither the vehicle owner nor the friend needs to perform complex operations such as opening a webpage, opening a text messaging application, or scanning a QR code. The operation is convenient, and the shared key information, such as the token, is not displayed on any page or in any text during the sharing process, preventing the token from being stolen by a third party and illegally obtaining key access, thus enhancing the security of the sharing process. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 A flowchart of the digital key sharing method provided in Embodiment 1 of the present invention;

[0039] Figures 2-4 These are schematic diagrams illustrating the animation effects in the digital key sharing method provided in the embodiments of the present invention;

[0040] Figure 5 A flowchart of the digital key sharing method provided in Embodiment 2 of the present invention;

[0041] Figure 6 This is a schematic diagram of the structure of the digital key sharing device provided in Embodiment 3 of the present invention;

[0042] Figure 7 This is a schematic diagram of the structure of the digital key sharing device provided in Embodiment 4 of the present invention;

[0043] Figure 8 This is a schematic diagram of the structure of the smart device provided in Embodiment 5 of the present invention. Detailed Implementation

[0044] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0045] Figure 1 This is a flowchart of a digital key sharing method provided in Embodiment 1 of the present invention. This method is applied to a vehicle owner's device for securely and conveniently sharing a digital key with a friend's device. The vehicle owner's device includes, but is not limited to, smartphones, wearable devices, and smart AI devices, among other user mobile devices, wherein a digital key application is installed on the vehicle owner's device. This method can be executed by a digital key sharing device provided in this embodiment of the invention. This device can be implemented using software and / or hardware methods and configured on the vehicle owner's device. Figure 1 As shown, the digital key sharing method of this invention includes the following steps:

[0046] Step 101: Identify the target friend's device based on the NFC channel and establish a close-range secure communication channel with the target friend's device.

[0047] Both the vehicle owner's device and the friend's device are equipped with NFC communication modules. When the NFC sensing areas of the vehicle owner's device and the friend's device are close together or touch, they exchange device identifiers based on the NFC communication channel. The vehicle owner's device then identifies the friend's device as the target device for sharing the digital key. A secure short-range communication channel, such as a Bluetooth Low Energy (BLE) secure communication channel, is established between the vehicle owner's device and the target friend's device to ensure secure data transmission.

[0048] Step 102: Check if the preset sharing confirmation conditions are met. If the preset sharing confirmation conditions are met, send the sharing key information to the target friend's device via a short-range secure communication channel. The sharing key information carries application information for obtaining the sharing key, and the target friend's device executes the preset sharing key obtaining process according to the application information.

[0049] After a short-range secure communication channel is successfully established, it can detect whether the preset sharing confirmation conditions are met. When the preset sharing confirmation conditions are met, the vehicle owner's device will send the shared key information to the target friend's device through the short-range secure communication channel.

[0050] Detecting whether the preset sharing confirmation conditions are met may include: determining that the preset sharing confirmation conditions are met when a preset screen operation is detected. The preset screen operation may include swiping, clicking a button, etc.

[0051] As an alternative example, detecting whether the preset sharing confirmation conditions are met may include: acquiring the NFC sensing status information and UWB ranging value between the vehicle owner's device and the target friend's device, determining whether the sensing status information and UWB ranging value meet a preset change pattern, and determining that the preset sharing confirmation conditions are met if the preset change pattern is met. Determining whether the sensing status information and UWB ranging value meet the preset change pattern may include: determining that the preset change pattern is met when the distance between the vehicle owner's device and the target friend's device is within a preset distance range, and the sensing status between the vehicle owner's device and the target friend's device changes. For example, the preset change pattern may be that the NFC sensing areas of the vehicle owner's device and the target friend's device are far apart, but the distance between them is within a preset distance range, such as within 4cm. Specifically, the NFC sensing areas of the vehicle owner's device and the target friend's device being far apart may be that when the vehicle owner's device and the target friend's device are close to each other or touch, one or both of them rotate a certain angle, such as 90°, so that the NFC sensing signal between the vehicle owner's device and the target friend's device is weak enough to not detect the other end, but the distance between them is, for example, within 4cm. For example, the car owner's device and the target friend's device are placed back-to-back and close together, sensing each other via NFC signals. At this point, the distance between them is small, typically less than 4cm, allowing them to sense each other. Then, one or both devices rotate 90° simultaneously, for example, from a vertical to a horizontal position. During this rotation, the NFC magnetic field strength between them rapidly decreases while the distance changes minimally, remaining within a preset range, such as within 4cm. This results in a change in the NFC sensing state between the car owner's device and the target friend's device, with a minimal change in distance. This serves as a sharing confirmation condition, accurately sensing the sharing intention of the car owner's device and / or the friend's device. At this point, no additional manual operation is required; the car owner's device automatically sends the sharing key information to the target friend's device through the short-range secure communication channel between the two devices. While ensuring security, the interaction and fun of sharing are enhanced by the car owner and / or friend rotating their phones.

[0052] The shared key information carries application information for obtaining the shared key. If the target user's device has the corresponding digital key application app installed, the app will be automatically activated based on the received application information. After logging in, the digital key can be successfully obtained. The shared key information can be a token, which can carry application information. The target user's device can obtain the shared key online via cloud services based on the received token. Alternatively, the shared key information can also be an offline key, which the target user's device can use on the vehicle owner's vehicle after obtaining it. This application does not impose specific restrictions on whether the shared key corresponding to the shared key information is online or offline, nor does it impose any restrictions on the cloud-based online generation method of the shared key.

[0053] If the target friend's device does not yet have a corresponding secure app, the app will be automatically downloaded from the app store based on the received app information. The friend can then log in to their account to receive the digital key.

[0054] In some examples, the digital key sharing method may also include: monitoring the stage of the key sharing process and executing process feedback events corresponding to that stage. Process feedback events may include vibration or animation playback. Specifically, monitoring the stage of the key sharing process and executing process feedback events corresponding to that stage may include: playing a dynamic connection animation to indicate the connection status between the vehicle owner's device and the target friend's device when a near-field secure communication channel is established. The dynamic connection animation could be, for example, a dynamic undulating effect, such as... Figure 2 As shown, this allows users to better understand the current stage of the sharing process. Upon detecting that preset sharing confirmation conditions are met, a dynamic transmission animation is played to indicate the transfer of the sharing key information. This animation may include: the dynamic transmission channel and the dynamic transmission process, such as... Figure 3 , Figure 4 As shown. The dynamic transmission channel may include a radial transmission channel displayed at the top area of ​​the screens of the vehicle owner's device and the target friend's device. The dynamic transmission process may include a digital key card representing the sharing key leaving the vehicle owner's device and entering the target friend's device along the transmission channel. During transmission, the digital key card rapidly shrinks in size and leaves the vehicle owner's device at the top of the screen, then enters the target friend's device and rapidly expands again. This animation effect showcases the sharing process, providing users with a novel sharing experience. It is understood that this application does not impose specific limitations on the animation content or playback method.

[0055] Figure 5 This is a flowchart of a digital key sharing method provided in Embodiment 2 of the present invention, which is applied to a friend's device. This method can be executed by a digital key sharing device provided in this embodiment of the invention. This device can be implemented in software and / or hardware and configured on the friend's device. Figure 5 As shown, the digital key sharing method of this invention includes the following steps:

[0056] Step 501: Identify the vehicle owner's device based on the NFC channel and establish a near-field secure communication channel with the vehicle owner's device.

[0057] When sharing a digital key near the vehicle is required, the car owner and friend bring their respective NFC sensing areas close together or tap them together. This allows the car owner's device to identify the friend's device as the target device. The two devices can then establish a secure near-field communication channel, such as a BLE (Browser-to-Earth) communication channel. The car owner's device and the target friend's device exchange device identifiers via the NFC communication channel. Afterward, they establish a BLE secure communication channel or other secure near-field communication channels based on each other's device identifiers. Secure near-field communication channels can also be established between the car owner's device and the target friend's device using known technologies, which will not be elaborated upon here.

[0058] Step 502: Receive the shared key information sent by the vehicle owner's device through the near-field secure communication channel. The shared key information carries application information for retrieving the shared key.

[0059] The shared key information can be a token. After receiving the token, a friend's device can log in to the digital key application to obtain a shared key. The friend's device can then obtain the shared key online via the cloud or receive an offline key based on the shared key information, allowing the friend's device to directly access the vehicle. The token includes header, payload, and signature fields, and can be expanded as needed to transmit shared key information.

[0060] Step 503: Execute the preset process for obtaining the sharing key based on the application information.

[0061] Application information, such as the identification information of the digital key APP, allows a friend's device to wake up the installed digital key APP and log in to obtain a shared key, or automatically download and install the digital key APP from the app store if the friend's device does not have the corresponding APP installed.

[0062] It's worth mentioning that after successfully establishing a secure short-range communication channel, the friend's device and the car owner's device can provide feedback through vibration or animation. For example, through... Figure 2 The wave animation effect shown demonstrates the secure data transmission status, through methods such as... Figure 3 , Figure 4 The animation shown creates a transmission channel and demonstrates the process of sending the shared key from the car owner's device to the target friend's device by transmitting cards through the channel.

[0063] The following describes the user-side interaction process of the digital key sharing method based on an embodiment of the present invention, using the car owner's device and the friend's device as mobile phones as examples:

[0064] Step 1: Initiate the process.

[0065] When a car owner confirms the intention to share a digital key on the Car Owner Key APP, the Car Owner Key APP calls the operating system API to put the car owner's phone into a sensing state.

[0066] Step Two: Device Sensing. The car owner and their friend bring their phones close together or tap them together. The car owner's phone uses NFC signals to identify the friend's phone as the target device, and then the two phones establish a BLE secure communication channel. At this point, both the car owner's and friend's phones should display the following... Figure 2 The animation shown indicates that the sharing channel has been successfully established, and a confirmation button or animated prompt is displayed on the car owner's app page. For some mobile operating systems that have already provided the corresponding open capabilities, this can be completed directly using the system capabilities provided by the OS. For mobile operating systems that have not yet opened the relevant capabilities, this process can be completed within the app itself.

[0067] Step 3: Confirm Sharing. The car owner completes the confirmation action within the APP page, and the car owner's phone transmits the key token to the friend's phone. The token transmission animation effect is as follows. Figure 3 , Figure 4 As shown.

[0068] Step 4: Successful Claim. The token received on your friend's phone contains the relevant key app information. If the user has already installed the relevant key app, the app will be automatically opened and the key will be successfully claimed. If the user has not installed the relevant key app, they will be automatically redirected to the app store to download the key app, log in, and complete the claim.

[0069] Compared with existing technologies, the digital key sharing method of this invention identifies the target friend's device based on NFC signals and establishes a short-range secure communication channel with it. Under preset sharing confirmation conditions, the sharing key information is transmitted to the target friend's device through this secure communication channel. The target friend's device automatically executes a preset domain key sharing process based on application information. Throughout the sharing process, neither the car owner nor the friend needs to perform complex operations such as opening a webpage, opening a messaging app, or scanning a QR code. The operation is convenient, and the sharing key information, such as the token, is not displayed on any page or in any text during the sharing process, preventing third parties from stealing the token and illegally obtaining key access, thus enhancing security. Furthermore, the sharing process uses vibration, and especially animation effects, to provide intuitive feedback on the status of different sharing stages, offering users a refreshing sharing experience.

[0070] Embodiment 3 of the present invention provides a digital key sharing device, which is configured on the vehicle owner's device. For example... Figure 6 As shown, the device 600 includes:

[0071] The vehicle owner identification connection module 602 is used to identify the target friend's device based on the NFC channel and establish a short-range secure communication channel with the target friend's device; and

[0072] The data sharing module 604 is used to detect whether the preset sharing confirmation conditions are met. If the preset sharing confirmation conditions are met, the sharing key information is sent to the target friend's device through a short-range secure communication channel. The sharing key information carries application information for obtaining the sharing key. The target friend's device executes the preset process for obtaining the sharing key according to the application information.

[0073] Optionally, the device further includes:

[0074] The event monitoring module is used to monitor the stage of the key sharing process.

[0075] The feedback module is used to execute process feedback events corresponding to the stage; process feedback events include: vibration or playing animation.

[0076] Optionally, the feedback module is specifically used to: play a dynamic connection animation to indicate the connection status between the vehicle owner's device and the target friend's device when the short-range secure communication channel is established; and play a dynamic transmission animation to indicate the transfer of shared key information when a preset sharing confirmation condition is detected.

[0077] Optionally, the data sharing module 604 includes a sharing confirmation detection submodule. The sharing confirmation detection submodule is used to obtain NFC sensing status information and UWB ranging value between the vehicle owner's device and the target friend's device, determine whether the sensing status information and UWB ranging value meet a preset change mode, and determine that the preset sharing confirmation condition is met if the preset change mode is met.

[0078] Furthermore, the sharing confirmation detection submodule is used to determine whether a preset change mode is met when the distance between the vehicle owner's device and the target friend's device is within a preset distance range, and when the perception state between the vehicle owner's device and the target friend's device changes.

[0079] As an alternative, the share confirmation detection submodule can also be used to determine whether a preset share confirmation condition is met when a preset screen operation is detected.

[0080] Embodiment 4 of the present invention provides a digital key sharing device, which is configured on a friend's device. For example... Figure 7 As shown, the device 700 includes:

[0081] The friend identification connection module 702 is used to identify the vehicle owner's device based on the NFC channel and establish a short-range secure communication channel with the vehicle owner's device.

[0082] The shared key receiving module 704 is used to receive shared key information sent by the vehicle owner's device through a short-range secure communication channel. The shared key information carries application information for retrieving the shared key.

[0083] The shared key retrieval module 706 is used to execute a preset shared key retrieval process based on application information.

[0084] Compared with existing technologies, the digital key sharing device of this invention identifies the target friend's device based on NFC signals and establishes a short-range secure communication channel with it. Under preset sharing confirmation conditions, the sharing key information is transmitted to the target friend's device through this secure communication channel. The target friend's device automatically executes a preset domain key sharing process based on application information. Throughout the sharing process, neither the car owner nor the friend needs to perform complex operations such as opening a webpage, opening a messaging app, or scanning a QR code. The operation is convenient, and the sharing key information, such as the token, is not displayed on any page or in any text during the sharing process, preventing third parties from stealing the token and illegally obtaining key access, thus enhancing security. Furthermore, the sharing process uses vibration, and especially animation effects, to provide intuitive feedback on the status of different sharing stages, offering users a refreshing sharing experience.

[0085] Figure 8 This is a schematic diagram of the structure of a smart device provided in Embodiment 4 of the present invention. The smart device 80 includes a memory 81, a processor 82, and a computer program stored in the memory 81 and executable on the processor 82. When the processor 82 executes the program, it implements the digital key sharing method as described in Embodiment 1 or Embodiment 2 above.

[0086] Embodiment 5 of the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a computer processor, is used to perform the technical solution of any method embodiment.

[0087] Based on the above description of the implementation methods, those skilled in the art can clearly understand that the present invention can be implemented using software and necessary general-purpose hardware, and of course, it can also be implemented using hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory, hard disk, or optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or grid device, etc.) to execute the methods described in the various embodiments of the present invention.

[0088] It is worth noting that in the embodiments of the above-mentioned device, the various units and modules included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be realized; in addition, the specific names of each functional unit are only for easy distinction between each other and are not used to limit the scope of protection of the present invention.

[0089] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A method for sharing digital keys, characterized in that, Applied to vehicle owner devices, including: The target friend's device is identified based on the NFC channel, and a short-range secure communication channel is established with the target friend's device. The system checks whether preset sharing confirmation conditions are met. If the preset sharing confirmation conditions are met, the system sends the sharing key information to the target friend's device through the near-field secure communication channel. The sharing key information carries application information for obtaining the sharing key, and the target friend's device executes a preset sharing key obtaining process based on the application information.

2. The method according to claim 1, characterized in that, The method further includes: monitoring the stage of the key sharing process and executing the process feedback event corresponding to the stage; the process feedback event includes: vibration or playing an animation.

3. The method according to claim 2, characterized in that, The monitoring key sharing process is in a certain stage, and the corresponding process feedback event is executed, including: When the close-range secure communication channel is established, a dynamic connection animation is played to indicate the connection status between the vehicle owner's device and the target friend's device; If the preset sharing confirmation conditions are met, a dynamic transmission animation is played to indicate the transmission of the sharing key information.

4. The method according to claim 1, characterized in that, The detection of whether the preset sharing confirmation conditions are met includes: Acquire NFC sensing status information and UWB ranging values ​​between the vehicle owner's device and the target friend's device; Determine whether the sensing state information and the UWB ranging value meet a preset change pattern. If the preset change pattern is met, determine whether the preset sharing confirmation condition is met.

5. The method according to claim 4, characterized in that, The step of determining whether the sensing state information and the UWB ranging value meet the preset change pattern includes: When the distance between the vehicle owner's device and the target friend's device is within a preset distance range, and the perception state between the vehicle owner's device and the target friend's device changes, it is determined that the preset change mode is satisfied. Optionally, the detection of whether a preset sharing confirmation condition is met includes: When a preset screen operation is detected, the preset sharing confirmation conditions are determined to be met.

6. A method for sharing digital keys, characterized in that, Applied to a friend's device, the method includes: The vehicle owner's device is identified based on the NFC channel, and a short-range secure communication channel is established with the vehicle owner's device. The vehicle owner's device sends shared key information via the short-range secure communication channel. The shared key information carries application information for retrieving the shared key. The preset process for obtaining and sharing keys is executed based on the application information.

7. A digital key sharing device, characterized in that, Configured in vehicle owner equipment, the device includes: The vehicle owner identification connection module is used to determine the target friend's device based on the NFC channel and establish a short-range secure communication channel with the target friend's device. The data sharing module is used to detect whether preset sharing confirmation conditions are met. If the preset sharing confirmation conditions are met, the sharing key information is sent to the target friend's device through the near-field secure communication channel. The sharing key information carries application information for obtaining the sharing key, and the target friend's device executes a preset process for obtaining the sharing key based on the application information.

8. A digital key sharing device, characterized in that, Configured on a friend's device, the device includes: The friend identification connection module is used to identify the vehicle owner's device based on the NFC channel and establish a short-range secure communication channel with the vehicle owner's device. The shared key receiving module is used to receive shared key information sent by the vehicle owner's device through the short-range secure communication channel. The shared key information carries application information for retrieving the shared key. The key sharing module is used to execute a preset key sharing process based on the application information.

9. A smart device, characterized in that, It includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the digital key sharing method as described in claims 1 to 6.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the digital key sharing method as described in any one of claims 1 to 6.

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