Vehicle built-in SIM card management method and device and computer readable storage medium

Abstract

The invention discloses a vehicle built-in SIM card management method and device and a computer readable storage medium, and the method comprises the steps: obtaining an encryption setting state of an inserted SIM card, if the encryption setting state is that encryption is not set, issuing an offline instruction, monitoring the insertion of a new SIM card, and if the encryption setting state is not set encryption, sending the offline instruction; if the encryption setting state is set encryption, issuing the activation instruction, and obtaining the use state of the inserted SIM card; if the use state is initial use, the preset secret key is adopted for decryption, and an online instruction is issued after decryption succeeds, and if the use state is non-initial use, the prestored secret key is adopted for decryption, and an online instruction is issued after decryption succeeds. According to the invention, an efficient and convenient vehicle built-in SIM card management scheme is realized, the tampering of the vehicle-mounted SIM card by an individual user is effectively prevented, and the stability and safety of a vehicle network are guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of vehicle communication, and particularly to a method, device, and computer-readable storage medium for managing an in-vehicle SIM card. Background Art

[0002] In the prior art, TCAM (Telematics&Connectivity Antenna Module, in-vehicle information system connection antenna module) represents a vehicle networking terminal, and this product is also called TBOX (Telematics Box, remote communication terminal). TCAM is an important part of the vehicle networking system and is an intelligent terminal device integrating body network and wireless communication functions. TCAM realizes communication and data exchange between vehicle and vehicle (V2V), vehicle and infrastructure (V2I), and vehicle and Internet (V2N) by connecting to the in-vehicle CAN bus, Ethernet bus, and external cloud platform. TCAM usually consists of a processor, a GPS module, and a wireless module (such as 3G, 4G, 5G), and supports multiple interfaces (such as CAN bus, Ethernet bus, USB, Bluetooth, etc.).

[0003] It can be seen that TCAM plays a very important role in the vehicle networking system. Therefore, it is crucial to ensure the stable operation of the TCAM network.

[0004] Currently, an important function of TCAM is to interact with the vehicle cloud platform to provide Internet access function for the whole vehicle. These functions all require TCAM to support data functions, and TCAM's support for data functions depends on the SIM card. However, if the user tampers with the SIM card, it will affect the vehicle's ability to access the Internet, resulting in the problem that TCAM cannot use network services normally.

[0005] Therefore, how to effectively prevent the in-vehicle SIM card from being tampered with and ensure the stable operation of the TCAM network has become a technical problem to be solved urgently at present. Summary of the Invention

[0006] In order to overcome the deficiencies in the prior art, the purpose of the present invention is to provide a method to solve the problem that if the user tampers with the SIM card currently, it will affect the vehicle's ability to access the Internet, resulting in the problem that TCAM cannot use network services normally.

[0007] The present invention proposes a method for managing an in-vehicle SIM card, which is applied to the vehicle networking terminal of a vehicle. The method includes:

[0008] Obtain the encryption setting status of the inserted SIM card, and issue a logout instruction or an activation instruction according to the encryption setting status. Among them, if the encryption setting status is not set, issue the logout instruction and monitor the insertion of a new SIM card. If the encryption setting status is set, issue the activation instruction and obtain the usage status of the inserted SIM card;

[0009] Decrypt according to the usage status by calling a preset key or a pre-stored key. Among them, if the usage status is the first use, decrypt with the preset key and issue an online instruction after successful decryption. If the usage status is not the first use, decrypt with the pre-stored key and issue an online instruction after successful decryption.

[0010] Optionally, before obtaining the encryption setting status of the inserted SIM card, it includes:

[0011] After the vehicle starts, obtain the insertion status of the SIM card at a preset first monitoring frequency;

[0012] If it is detected that the SIM card is inserted, obtain the encryption setting status of the inserted SIM card.

[0013] Optionally, if the encryption setting status is not set, issue the logout instruction and monitor the insertion of a new SIM card, which further includes:

[0014] After the inserted SIM card logs out, obtain the removal status of the SIM card at a preset second monitoring frequency;

[0015] If it is detected that the SIM card is removed, obtain the insertion status of a new SIM card at the preset first monitoring frequency.

[0016] Optionally, if the usage status is the first use, decrypt with the preset key, which further includes:

[0017] If the decryption with the preset key fails, issue the logout instruction;

[0018] After the inserted SIM card logs out, obtain the removal status of the SIM card at a preset second monitoring frequency.

[0019] Optionally, if the usage status is not the first use, decrypt with the pre-stored key, which further includes:

[0020] If the decryption with the pre-stored key fails, decrypt with the preset key;

[0021] If the decryption using the preset key fails, the offline instruction is sent, and after the inserted SIM card goes offline, the removal status of the SIM card is obtained at a preset second monitoring frequency.

[0022] Optionally, the decryption using the preset key and sending the online instruction after successful decryption further includes:

[0023] After successful decryption, a preset list clearing instruction is sent;

[0024] After the list is cleared, a preset SIM ready signal is activated.

[0025] Optionally, the decryption using the preset key and sending the online instruction after successful decryption further includes:

[0026] After successful decryption, a new key is randomly generated;

[0027] The randomly generated new key is stored as the pre-stored key.

[0028] Optionally, the decryption using the pre-stored key and sending the online instruction after successful decryption further includes:

[0029] After successful decryption, a preset timer is enabled;

[0030] After the timing condition of the timer is satisfied, the SIM ready signal is sent.

[0031] The present invention also provides a vehicle built-in SIM card management device, which includes a memory, a processor, and a computer program stored on the memory and executable on the processor. When the computer program is executed by the processor, the steps of the vehicle built-in SIM card management method described in any one of the above are implemented.

[0032] The present invention also provides a computer-readable storage medium, on which a vehicle built-in SIM card management program is stored. When the vehicle built-in SIM card management program is executed by a processor, the steps of the vehicle built-in SIM card management method described in any one of the above are implemented.

[0033] Implementing the vehicle - built SIM card management method, device and computer - readable storage medium of the present invention, by obtaining the encryption setting status of the inserted SIM card and issuing a de - activation instruction or an activation instruction according to the encryption setting status. Among them, if the encryption setting status is not encrypted, the de - activation instruction is issued, and the insertion of a new SIM card is monitored. If the encryption setting status is encrypted, the activation instruction is issued, and the usage status of the inserted SIM card is obtained; decrypt according to the usage status by calling a preset key or a pre - stored key. Among them, if the usage status is the first use, decrypt with the preset key and issue an online instruction after successful decryption. If the usage status is not the first use, decrypt with the pre - stored key and issue an online instruction after successful decryption. An efficient and convenient vehicle - built SIM card management solution is realized, effectively preventing personal users from tampering with in - vehicle SIM cards and ensuring the stability and security of the vehicle network. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention will be further described below in conjunction with the drawings and embodiments. In the drawings:

[0035] Figure 1 is the flowchart of the first embodiment of the vehicle - built SIM card management method of the present invention;

[0036] Figure 2 is the flowchart of the second embodiment of the vehicle - built SIM card management method of the present invention;

[0037] Figure 3 is the flowchart of the third embodiment of the vehicle - built SIM card management method of the present invention;

[0038] Figure 4 is the flowchart of the fourth embodiment of the vehicle - built SIM card management method of the present invention;

[0039] Figure 5 is the flowchart of the fifth embodiment of the vehicle - built SIM card management method of the present invention;

[0040] Figure 6 is the flowchart of the sixth embodiment of the vehicle - built SIM card management method of the present invention;

[0041] Figure 7 is the flowchart of the seventh embodiment of the vehicle - built SIM card management method of the present invention;

[0042] Figure 8 is the flowchart of the eighth embodiment of the vehicle - built SIM card management method of the present invention;

[0043] Figure 9 is the working flowchart of the vehicle - built SIM card management method of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0044] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0045] In the following description, suffixes such as "module", "component", or "unit" used to represent elements are only for the convenience of explaining the present invention and have no specific meaning in themselves. Therefore, "module", "component", or "unit" can be used interchangeably.

[0046] Embodiment 1

[0047] Figure 1 is a flowchart of the first embodiment of the method for managing an in-vehicle SIM card according to the present invention. A method for managing an in-vehicle SIM card is applied to the vehicle Internet of Vehicles terminal, and the method includes:

[0048] S1. Obtain the encryption setting status of the inserted SIM card, and issue a deactivation instruction or an activation instruction according to the encryption setting status. Wherein, if the encryption setting status is not encrypted, issue the deactivation instruction and monitor the insertion of a new SIM card, and if the encryption setting status is encrypted, issue the activation instruction and obtain the usage status of the inserted SIM card;

[0049] S2. Decrypt according to the usage status by calling a preset key or a pre-stored key. Wherein, if the usage status is the first use, decrypt with the preset key and issue an online instruction after successful decryption, and if the usage status is not the initial use, decrypt with the pre-stored key and issue an online instruction after successful decryption.

[0050] In this embodiment, considering that one of the important functions of TCAM is to interact with the vehicle cloud platform and provide Internet access functions for the whole vehicle, these functions all require TCAM to support data functions, and TCAM's support for data functions depends on the SIM card; in this embodiment, the SIM card can be an embedded E-SIM or an external physical SIM card; in this embodiment, the following will be described for the external physical card.

[0051] In this embodiment, the external SIM card is bound to TCAM. If the user privately replaces the SIM card that is not certified by the manufacturer, the SIM card will become invalid and cannot be used normally on TCAM, thus affecting the vehicle's ability to access the Internet. From a technical level, the behavior of tampering with the TCAM SIM card is prevented; in this embodiment, TCAM can only use the SIM card provided by the vehicle factory. If other SIM cards are replaced, TCAM cannot use the network service normally, thus preventing the behavior of tampering with the SIM card, so that the vehicle factory can provide data network and other services for the known SIM card.

[0052] Specifically, in this embodiment, first, obtain the encryption setting status of the inserted SIM card, and issue a logout instruction or an activation instruction according to the encryption setting status. Among them, if the encryption setting status is not set, issue the logout instruction and monitor the insertion of a new SIM card. If the encryption setting status is set, issue the activation instruction and obtain the usage status of the inserted SIM card. Then, decrypt according to the usage status by calling a preset key or a pre-stored key. Among them, if the usage status is the first use, decrypt with the preset key and issue an online instruction after successful decryption. If the usage status is not the first use, decrypt with the pre-stored key and issue an online instruction after successful decryption.

[0053] The beneficial effect of this embodiment is that by obtaining the encryption setting status of the inserted SIM card and issuing a logout instruction or an activation instruction according to the encryption setting status. Among them, if the encryption setting status is not set, issue the logout instruction and monitor the insertion of a new SIM card. If the encryption setting status is set, issue the activation instruction and obtain the usage status of the inserted SIM card. Decrypt according to the usage status by calling a preset key or a pre-stored key. Among them, if the usage status is the first use, decrypt with the preset key and issue an online instruction after successful decryption. If the usage status is not the first use, decrypt with the pre-stored key and issue an online instruction after successful decryption. An efficient and convenient vehicle built-in SIM card management solution is realized, effectively preventing personal users from tampering with in-vehicle SIM cards and ensuring the stability and security of the vehicle network.

[0054] Embodiment 2

[0055] Figure 2 is a flowchart of the second embodiment of the vehicle built-in SIM card management method of the present invention. Based on the above embodiment, before obtaining the encryption setting status of the inserted SIM card, it includes:

[0056] S01. After the vehicle starts, obtain the insertion status of the SIM card at a preset first monitoring frequency;

[0057] S02. If it is detected that the SIM card is inserted, obtain the encryption setting status of the inserted SIM card.

[0058] Please refer to Figure 9 , in this embodiment, the TCAM built-in application gsw_auto_pin is responsible for communicating with the SIM card; when the TCAM is powered on, the application gsw_auto_pin starts with the system and registers a preset QMI service, which is a service related to the SIM card.

[0059] Optionally, in this embodiment, QMI continuously obtains the insertion status of the SIM card at a preset first monitoring frequency; if it is detected that the SIM card is inserted, the encryption setting status of the inserted SIM card is obtained; wherein, the encryption setting status is the PIN (Personal Identification Number) setting status of the SIM card provided by the vehicle manufacturer, where turning on the PIN means encryption has been set, and turning off the PIN means encryption has not been set.

[0060] The beneficial effect of this embodiment is that after recognizing the vehicle startup, the insertion status of the SIM card is obtained at a preset first monitoring frequency. If it is detected that the SIM card is inserted, the encryption setting status of the inserted SIM card is obtained. This enables TCAM to effectively detect the initial state of the SIM in a timely manner.

[0061] Embodiment Three

[0062] Figure 3 It is a flowchart of the third embodiment of the method for managing the built-in SIM card in a vehicle according to the present invention. Based on the above embodiment, if the encryption setting status is not set, the offline instruction is sent, and the insertion of a new SIM card is monitored. Further, it includes:

[0063] S11. After the inserted SIM card goes offline, obtain the removal status of the SIM card at a preset second monitoring frequency;

[0064] S12. If it is detected that the SIM card is removed, obtain the insertion status of a new SIM card at a preset first monitoring frequency.

[0065] Please refer to Figure 9 , in this embodiment, the figure shows the detection process of a physical SIM card. If a virtual SIM card in the form of an eSIM card is used, after the SIM card goes offline, directly continue to obtain the insertion status of a new SIM card at a preset first monitoring frequency.

[0066] Optionally, in this embodiment, the first monitoring frequency is higher than the second monitoring frequency, thereby differentially improving the monitoring efficiency while reducing energy consumption.

[0067] The beneficial effect of this embodiment is that after recognizing that the inserted SIM card goes offline, the removal status of the SIM card is obtained at a preset second monitoring frequency. If it is detected that the SIM card is removed, the insertion status of a new SIM card is obtained at a preset first monitoring frequency. This improves the monitoring efficiency and optimizes the monitoring energy consumption and processing resource consumption.

[0068] Embodiment Four

[0069] Figure 4 It is a flowchart of the fourth embodiment of the method for managing the built-in SIM card of the vehicle according to the present invention. Based on the above embodiment, if the usage status is the first use, the preset key is used for decryption, and further includes:

[0070] S21. If the decryption using the preset key fails, the offline instruction is issued;

[0071] S22. After the inserted SIM card goes offline, obtain the removal status of the SIM card at a preset second monitoring frequency.

[0072] Please refer to Figure 9 , in this embodiment, if the PIN is not enabled, AT+CFUN=4 is issued as the offline instruction; the SIM card is kicked offline, and the insertion status of the SIM card is continuously detected.

[0073] Optionally, in this embodiment, after the inserted SIM card goes offline, obtain the removal status of the SIM card at a preset second monitoring frequency.

[0074] Optionally, in this embodiment, determine the type and number of times the SIM card goes offline, and adjust the subsequent monitoring frequency according to the type and / or number of times the SIM card goes offline, so as to further save power consumption.

[0075] Optionally, in this embodiment, the above-mentioned offline types include the first offline instruction issued when the decryption using the preset key fails, and the second offline instruction issued when the decryption using the preset key fails subsequently.

[0076] Optionally, in this embodiment, when obtaining the removal status of the SIM card at a preset second monitoring frequency, increase the above-mentioned second monitoring frequency for the first offline instruction, and decrease the above-mentioned second monitoring frequency for the first offline instruction, so as to make the monitoring more efficient, and execute the subsequent process differently according to different offline types, which ensures the execution efficiency to a certain extent.

[0077] The beneficial effect of this embodiment is that by determining that the decryption using the preset key fails, the offline instruction is issued, and after the inserted SIM card goes offline, obtain the removal status of the SIM card at a preset second monitoring frequency. Thereby improving the processing efficiency after the SIM is tampered with and ensuring network security.

[0078] Embodiment Five

[0079] Figure 5 It is a flowchart of the fifth embodiment of the method for managing the built-in SIM card of the vehicle according to the present invention. Based on the above embodiment, if the usage status is not the initial use, the pre-stored key is used for decryption, and further includes:

[0080] S23. If the decryption fails using the pre-stored key, then use the preset key for decryption;

[0081] S24. If the decryption fails using the preset key, then send the offline instruction, and after the inserted SIM card goes offline, obtain the removal status of the SIM card at a preset second monitoring frequency.

[0082] Please refer to Figure 9 , in this embodiment, check whether the SIM card is used for the first time; among them, if it is used for the first time, use the preset 1234 and 0284 to unlock the PIN in sequence, and judge success or failure according to the QMI return result; if it is not used for the first time, use the previously generated, that is, the pre-stored random PIN to unlock the PIN, and judge success or failure according to the QMI return result.

[0083] Optionally, in this embodiment, the above preset password is described by taking the initial PIN set to 1234 or 0284 as an example.

[0084] The beneficial effect of this embodiment is that by determining that the decryption fails using the pre-stored key, then use the preset key for decryption. If the decryption fails using the preset key, then send the offline instruction, and after the inserted SIM card goes offline, obtain the removal status of the SIM card at a preset second monitoring frequency. Thus, at different stages, different passwords are used for verification in sequence, improving the soundness and stability of the verification, and enhancing the security guarantee level.

[0085] Embodiment Six

[0086] Figure 6 is the flowchart of the sixth embodiment of the method for managing the in-vehicle SIM card of the present invention. Based on the above embodiment, the step of using the preset key for decryption and sending the online instruction after successful decryption further includes:

[0087] S31. After successful decryption, send a preset list clearing instruction;

[0088] S32. After the list is cleared, activate a preset SIM ready signal.

[0089] Please refer to Figure 9 , in this embodiment, send AT+ZSTCLOCK to clear the cell list, which is used as the preset list clearing instruction in this embodiment and is used to activate the SIG_UIM_REAY signal.

[0090] The beneficial effect of this embodiment is that by recognizing successful decryption, send a preset list clearing instruction, and after the list is cleared, activate a preset SIM ready signal. Thus, it provides a prerequisite basis for subsequent random password generation.

[0091] Embodiment Seven

[0092] Figure 7 It is a flowchart of the seventh embodiment of the method for managing the built-in SIM card of a vehicle according to the present invention. Based on the above embodiment, decrypting using the preset key and issuing an online instruction after successful decryption further includes:

[0093] S33. After successful decryption, randomly generate a new key;

[0094] S34. Store the randomly generated new key as the pre-stored key.

[0095] Please refer to Figure 9 , in this embodiment, after successful decryption, a new random PIN is generated and stored in the etc / backup / gsw_auto_pin_info file for subsequent PIN unlocking.

[0096] The beneficial effect of this embodiment is that after recognizing successful decryption, a new key is randomly generated and stored as the pre-stored key. Thus, a source of pre-stored key is provided for subsequent verification in the case of non-first use.

[0097] Embodiment Eight

[0098] Figure 8 It is a flowchart of the eighth embodiment of the method for managing the built-in SIM card of a vehicle according to the present invention. Based on the above embodiment, decrypting using the pre-stored key and issuing an online instruction after successful decryption further includes:

[0099] S35. After successful decryption, enable a preset timer;

[0100] S36. After meeting the timing condition of the timer, issue the SIM ready signal.

[0101] Please refer to Figure 9 , in this embodiment, start the lock Band timer and issue the SIG_UIM_REAY signal as the SIM ready signal of this embodiment.

[0102] Optionally, in this embodiment, the device only recognizes SIM cards with an initial PIN of 1234 or 0284. If the SIM card does not open the PIN, then issue AT+CFUN=4 to prevent the SIM card from camping on the network.

[0103] Optionally, in this embodiment, after inserting a SIM card with an initial PIN of 1234 or 0284, the program calculates a new PIN and saves it in the etc / backup / gsw_auto_lock_info file. When the card is inserted again, the stored PIN is used to unlock the PIN.

[0104] The beneficial effect of this embodiment is that after recognizing successful decryption, a preset timer is enabled, and after the timing condition of the timer is met, the SIM ready signal is sent.

[0105] Embodiment Nine

[0106] Based on the above embodiments, the present invention also proposes a vehicle-built SIM card management device, which includes a memory, a processor, and a computer program stored on the memory and executable on the processor. When the computer program is executed by the processor, it implements the steps of the vehicle-built SIM card management method described in any one of the above.

[0107] It should be noted that the above device embodiment and the method embodiment belong to the same concept. The specific implementation process is detailed in the method embodiment, and the technical features in the method embodiment are correspondingly applicable in the device embodiment, so they will not be elaborated here.

[0108] Embodiment Ten

[0109] Based on the above embodiments, the present invention also proposes a computer-readable storage medium, on which a vehicle-built SIM card management program is stored. When the vehicle-built SIM card management program is executed by a processor, it implements the steps of the vehicle-built SIM card management method described in any one of the above.

[0110] It should be noted that the above medium embodiment and the method embodiment belong to the same concept. The specific implementation process is detailed in the method embodiment, and the technical features in the method embodiment are correspondingly applicable in the medium embodiment, so they will not be elaborated here.

[0111] Implementing the vehicle - built SIM card management method, device and computer - readable storage medium of the present invention, by obtaining the encryption setting status of the inserted SIM card and issuing a de - line instruction or an activation instruction according to the encryption setting status. Among them, if the encryption setting status is not set for encryption, the de - line instruction is issued and the insertion of a new SIM card is monitored. If the encryption setting status is set for encryption, the activation instruction is issued and the usage status of the inserted SIM card is obtained; decrypt according to the usage status by calling a preset key or a pre - stored key. Among them, if the usage status is the first use, decrypt with the preset key and issue an on - line instruction after successful decryption. If the usage status is non - initial use, decrypt with the pre - stored key and issue an on - line instruction after successful decryption. An efficient and convenient vehicle - built SIM card management solution is realized, effectively preventing personal users from tampering with in - vehicle SIM cards and ensuring the stability and security of the vehicle network.

[0112] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non - exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including that element.

[0113] The serial numbers of the above - mentioned embodiments of the present invention are only for description and do not represent the superiority or inferiority of the embodiments.

[0114] Through the description of the above - mentioned implementation manners, those skilled in the art can clearly understand that the above - mentioned embodiment methods can be implemented by means of software plus a necessary general - purpose hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation manner. Based on such an understanding, the technical solution of the present invention, in essence, or the part that makes a contribution to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disc) and includes several instructions for causing a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0115] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the spirit of the present invention and the scope protected by the claims. All of these fall within the protection scope of the present invention.

Claims

1. A method for managing a vehicle's built-in SIM card, applied to a vehicle's Internet of Vehicles terminal, characterized in that: The method comprises: Obtain the encryption setting status of the inserted SIM card, and issue an offline instruction or an activation instruction according to the encryption setting status, wherein if the encryption setting status is that encryption is not set, the offline instruction is issued, and the insertion of a new SIM card is monitored, and if the encryption setting status is that encryption is set, the activation instruction is issued, and the usage status of the inserted SIM card is obtained; According to the usage status, the preset key or pre-stored key is called for decryption. If the usage status is the first use, the preset key is used for decryption, and an online instruction is issued after the decryption is successful. If the usage status is not the initial use, the pre-stored key is used for decryption, and an online instruction is issued after the decryption is successful.

2. The vehicle built-in SIM card management method according to claim 1, characterized in that: The step of obtaining the encryption setting status of the inserted SIM card includes: When the vehicle is started, the insertion status of the SIM card is obtained according to a preset first monitoring frequency; If the insertion of the SIM card is detected, the encryption setting status of the inserted SIM card is obtained.

3. The vehicle built-in SIM card management method according to claim 2, characterized in that: If the encryption setting state is that encryption is not set, the offline instruction is issued, and a new SIM card insertion is monitored, further comprising: When the inserted SIM card goes offline, obtaining the removal status of the SIM card according to a preset second monitoring frequency; If it is detected that the SIM card is removed, the insertion status of a new SIM card is acquired according to a preset first monitoring frequency.

4. The vehicle built-in SIM card management method according to claim 3, characterized in that: If the usage status is the first use, decrypting using the preset key further includes: If the decryption using the preset key fails, issuing the offline instruction; When the inserted SIM card goes offline, the removal status of the SIM card is obtained according to a preset second monitoring frequency.

5. The vehicle built-in SIM card management method according to claim 3, characterized in that: If the usage status is non-initial use, decrypting using the pre-stored key further includes: If decryption using the pre-stored key fails, decryption using the preset key; If the decryption using the preset key fails, the offline instruction is issued, and when the inserted SIM card goes offline, the removal status of the SIM card is obtained according to the preset second monitoring frequency.

6. The vehicle built-in SIM card management method according to claim 1, characterized in that: The decryption using the preset key and issuing an online instruction after the decryption is successful further includes: When the decryption is successful, the preset list clearing instruction is issued; When the list is cleared, the preset SIM ready signal is activated.

7. The vehicle built-in SIM card management method according to claim 1, characterized in that: The decryption using the preset key and issuing an online instruction after the decryption is successful further includes: When decryption is successful, a new key is randomly generated; The randomly generated new key is stored as the pre-stored key.

8. The vehicle built-in SIM card management method according to claim 6, characterized in that: The method of using the pre-stored key to decrypt and issuing an online instruction after the decryption is successful further includes: When decryption is successful, the preset timer is activated; After the timing condition of the timer is met, the SIM ready signal is sent.

9. A vehicle built-in SIM card management device, characterized in that: The device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the computer program is executed by the processor, the steps of the vehicle built-in SIM card management method as claimed in any one of claims 1 to 8 are implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a vehicle built-in SIM card management program, and when the vehicle built-in SIM card management program is executed by the processor, the steps of the vehicle built-in SIM card management method according to any one of claims 1 to 8 are implemented.

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