Identity verification method and system for vehicle and road side unit, vehicle machine equipment and medium

Abstract

The invention relates to the technical field of electric digital processing, in particular to an identity verification method and system for a vehicle and a road side unit, vehicle equipment and a medium. The method comprises the following steps: when a target intelligent automobile receives a traffic information prompt, analyzing whether a specified digital certificate of a roadside unit which issues the traffic information prompt meets a verification requirement or not; analyzing whether a preset road side unit corresponding to the specified digital certificate exists near the real-time position of the target intelligent automobile; obtaining construction and maintenance information of a preset road side unit; generating an encrypted verification password according to the construction and maintenance information; acquiring a feedback password provided by the roadside unit which issues the traffic information prompt; and if the feedback password is consistent with the verification password, responding to the traffic information prompt. The intelligent automobile is prevented from possibly responding to wrong or forged traffic information, and the driving safety is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle communication technologies, and more particularly, to an identity authentication method, system, in-vehicle device, and medium for a vehicle and a roadside unit. Background Art

[0002] With the rapid development of intelligent vehicle technologies, vehicle-to-everything (V2X) communication has become a key technology for enhancing road safety, efficiency, and driving experience. In this technology framework, the communication between intelligent vehicles and roadside units is particularly important. These units provide critical traffic information and safety alerts, and ensuring the authenticity and security of communication is crucial for the operation of intelligent vehicles through these highly dependent data transmissions.

[0003] Although existing systems can handle standard data transmission and encryption tasks, they are still insufficient in verifying the authenticity and operating status of roadside units. Especially in cases where roadside units may stop working due to failures or be maliciously forged, the prior art fails to provide an effective mechanism to identify and exclude these illegal units, resulting in intelligent vehicles possibly responding to incorrect or forged traffic information and increasing safety risks.

[0004] In view of this, the present application is proposed. Summary of the Invention

[0005] The purpose of the present application is to provide an identity authentication method, system, in-vehicle device, and medium for a vehicle and a roadside unit, so as to provide an effective password verification mechanism to identify and exclude illegal roadside units, avoid intelligent vehicles possibly responding to incorrect or forged traffic information, and improve driving safety.

[0006] To achieve the above purpose, the present application adopts the following technical solutions: In a first aspect, the present application provides an identity authentication method for a vehicle and a roadside unit, including: When a target intelligent vehicle receives a traffic information alert, analyzing whether a specified digital certificate of the roadside unit that issues the traffic information alert meets the verification requirements; When it is determined that the specified digital certificate meets the verification requirements, obtaining the real-time position of the target intelligent vehicle, and analyzing whether there is a preset roadside unit corresponding to the specified digital certificate near the real-time position of the target intelligent vehicle; If it is determined that there is a preset roadside unit corresponding to the specified digital certificate near the real-time position of the target intelligent vehicle, obtaining the construction and maintenance information of the preset roadside unit; Generating an encrypted verification password according to the construction and maintenance information; Obtaining a feedback password provided by the roadside unit that issues the traffic information alert; If the feedback password is consistent with the verification password, then respond to the traffic information reminder.

[0007] Optionally, analyze whether the specified digital certificate of the roadside unit that issues the traffic information reminder meets the verification requirements, including: Perform validity check, signature verification, and certificate chain verification on the specified digital certificate.

[0008] Optionally, analyze whether there is a preset roadside unit corresponding to the specified digital certificate near the real-time position of the target intelligent vehicle, including: Obtain a pre-established database, where the database includes the positions and digital certificate numbers of multiple preset roadside units; Retrieve in the database according to the number of the specified digital certificate to obtain the position of the preset roadside unit to which the specified digital certificate belongs; Judge whether the real-time position of the target intelligent vehicle and the position of the preset roadside unit are within the communication coverage range of the traffic information reminder.

[0009] Optionally, the construction and maintenance information of the preset roadside unit includes: the installation position, serial number, maintenance log, manufacturer, model, and production batch of the preset roadside unit.

[0010] Optionally, generate an encrypted verification password according to the construction and maintenance information, including: Convert each construction and maintenance information of the preset roadside unit into a string respectively; Concatenate multiple strings and encrypt them with a key to obtain an encrypted verification password.

[0011] Optionally, obtain the feedback password provided by the roadside unit that issues the traffic information reminder, including: Request the password from the roadside unit that issues the traffic information reminder; The roadside unit responds to the request of the target intelligent vehicle and provides the feedback password to the target intelligent vehicle.

[0012] In a second aspect, the present application provides an identity verification system for a vehicle and a roadside unit, including: A roadside unit, configured to send a traffic information reminder to a target intelligent vehicle; and feedback a password to the target intelligent vehicle A target intelligent vehicle is configured to analyze whether a specified digital certificate of a roadside unit that issues the traffic information reminder meets the verification requirements when receiving the traffic information reminder; when it is determined that the specified digital certificate meets the verification requirements, obtain the real-time position of the target intelligent vehicle, and analyze whether there is a preset roadside unit corresponding to the specified digital certificate near the real-time position of the target intelligent vehicle; if it is determined that there is a preset roadside unit corresponding to the specified digital certificate near the real-time position of the target intelligent vehicle, obtain the construction and maintenance information of the preset roadside unit; generate an encrypted verification password according to the construction and maintenance information; obtain a feedback password provided by the roadside unit that issues the traffic information reminder; if the feedback password is consistent with the verification password, respond to the traffic information reminder.

[0013] Optionally, the system further includes a cloud platform, which is configured to receive the construction and maintenance information uploaded by each preset roadside unit when each preset roadside unit is installed and maintained; and send the construction and maintenance information to the target intelligent vehicle.

[0014] In a third aspect, the present application provides a vehicle-mounted device, including: At least one processor, and a memory communicatively connected to at least one of the processors; Wherein, the memory stores instructions executable by at least one of the processors, and the instructions are executed by at least one of the processors to enable at least one of the processors to execute the above-mentioned vehicle and roadside unit authentication method.

[0015] In a fourth aspect, the present application provides a computer-readable storage medium, on which computer instructions are stored, and the computer instructions are used to cause a computer to execute the above-mentioned vehicle and roadside unit authentication method.

[0016] Compared with the prior art, the beneficial effects of the present application are as follows: When the target intelligent vehicle receives a traffic information reminder, the present application can accurately identify whether the roadside unit that issues the information is a legal unit that has been verified and set in advance based on the current position state of the vehicle. And even after confirming that there is indeed a roadside unit that issues the information near the position of the intelligent vehicle, it can further accurately identify its authenticity by comparing the construction and maintenance information of the roadside unit, and then can effectively identify and exclude the units forged due to the roadside unit stopping working, so as to ensure that when the intelligent vehicle responds to the traffic information reminder and establishes communication, it relies on a trustworthy roadside unit, greatly improving the security of data interaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a flowchart of an identity verification method between a vehicle and a roadside unit provided by an embodiment of the present application; Figure 2 It is a schematic diagram of the communication coverage range of a preset roadside unit retrieved by an embodiment of the present application; Figure 3 It is a schematic diagram of the structure of a vehicle-mounted device provided by the present application. Specific Embodiments

[0019] The following will describe exemplary embodiments of the present application in conjunction with the drawings, including various details of the embodiments of the present application to facilitate understanding. It should be considered that they are merely exemplary. Therefore, those of ordinary skill in the art should recognize that various changes and modifications can be made to the embodiments described here without departing from the scope and spirit of the present application. Similarly, for the sake of clarity and conciseness, the description of well-known functions and structures is omitted below.

[0020] Figure 1 It is a flowchart of an identity verification method between a vehicle and a roadside unit provided by an embodiment of the present application, and this method can be executed by a vehicle-mounted device. The method provided in this embodiment is applicable to the situation where an intelligent vehicle and a roadside unit access the vehicle network, and the intelligent vehicle verifies the identity of the roadside unit before interacting with the roadside unit through the vehicle network for valid data. See Figure 1 As shown in, the method provided in this embodiment includes the following operations: S110. Start.

[0021] S120. When the target intelligent vehicle receives a traffic information reminder, analyze whether the specified digital certificate of the roadside unit that issues the traffic information reminder meets the verification requirements. If it meets the verification requirements, jump to S130; if it does not meet the requirements, jump to S160.

[0022] The roadside unit (Road-Side Unit, RSU) sends traffic information reminders to all intelligent vehicles that access the vehicle network and are within the communication coverage range of the roadside unit. Among them, the RSU includes, but is not limited to, 5G base station type RSU and intelligent transportation perception type RSU.

[0023] The RSU can provide the vehicle with the following multiple types of traffic information reminders: 1) Static traffic information, such as traffic sign information like fixed speed limits, lane indications, no overtaking, etc.; 2) Dynamic traffic events, such as real-time events like traffic accidents, construction areas, temporarily closed lanes, etc.; 3) Weather and road conditions, such as reminders of slippery roads and waterlogged sections, and suggestions to adjust the vehicle speed or route; 4) Traffic signal states, such as traffic light countdowns and recommended optimal speeds for green lights.

[0024] In addition to traffic information reminders, the roadside unit also sends its digital certificate to the target intelligent vehicle for the target intelligent vehicle to perform identity verification. For the convenience of description and distinction, the digital certificate sent by the roadside unit to the target intelligent vehicle is called the designated digital certificate. In the vehicle-to-everything (V2X) network, the secure communication between the roadside unit (RSU) and the vehicle relies on digital certificates and the public key infrastructure (PKI) to ensure identity authentication, data integrity, and anti-tampering.

[0025] The target intelligent vehicle performs validity check, signature verification, and certificate chain verification on the designated digital certificate. Exemplarily, the validity check includes: checking whether the digital certificate is within the validity period; querying the certificate revocation list to check whether the digital certificate has been revoked. The signature verification includes: decrypting the digital signature of the certificate using the public key of the CA (Certificate Authority) to obtain the hash value of the certificate. Calculating the hash value of the certificate content using the same hash algorithm (such as SHA-256). The certificate chain verification includes: obtaining the intermediate CA certificate (the CA that issued the designated digital certificate); verifying whether the intermediate CA certificate is issued by the root CA; checking whether the root CA is trusted. If the designated digital certificate passes the validity check, signature verification, and certificate chain verification, then execute S130. If the designated digital certificate fails the validity check, signature verification, or certificate chain verification, it does not meet the requirements, the roadside unit that issued the traffic information reminder is considered untrusted, the traffic information reminder is not responded to, and subsequent reminders from the roadside unit are blocked.

[0026] S130: Obtain the real-time location of the target intelligent vehicle, and analyze whether there is a preset roadside unit corresponding to the designated digital certificate near the real-time location of the target intelligent vehicle. If there is, jump to S140; if not, jump to S160.

[0027] The target intelligent vehicle is equipped with a positioning system, such as GPS (Global Positioning System) or Beidou positioning system, to collect the real-time location of the target intelligent vehicle.

[0028] Pre - establish a database including the positions and digital certificate numbers of multiple preset roadside units. The positions of the preset roadside units (which can be represented by longitude and latitude) and the digital certificate numbers have a one - to - one correspondence. In this embodiment, it is considered that the preset roadside units are authentic and trustworthy units.

[0029] The target intelligent vehicle retrieves in the database according to the number of the specified digital certificate and obtains the position of the preset roadside unit to which the specified digital certificate belongs. This position can be represented by longitude and latitude. The retrieved preset roadside unit may be the roadside unit that issues traffic information reminders, or it may be other roadside units, and position comparison is required. Figure 2 It is a schematic diagram of the communication coverage range of the retrieved preset roadside unit provided by the embodiment of the present application. This communication coverage range is centered on the preset roadside unit, with R being the communication distance, and the overall shape is conical. Determine whether the real - time position of the target intelligent vehicle and the position of the (retrieved) roadside unit are within the communication coverage range of the traffic information reminder. If the real - time position of the target intelligent vehicle is within the conical coverage range of the retrieved preset roadside unit, it is considered that there is a preset roadside unit corresponding to the specified digital certificate near the real - time position of the target intelligent vehicle. The roadside unit that issues the traffic information reminder passes the position verification and continues to perform the verification of the construction and maintenance information. Conversely, if the real - time position of the target intelligent vehicle is outside the conical coverage range of the retrieved preset roadside unit, it indicates that the preset roadside unit from which the aforementioned digital certificate comes cannot communicate with the target intelligent vehicle, the roadside unit that issues the traffic information reminder is not trustworthy, does not respond to this traffic information reminder, and screens subsequent reminders from the roadside unit.

[0030] S140. Obtain the construction and maintenance information of the preset roadside unit; generate an encrypted verification password according to the construction and maintenance information; obtain the feedback password provided by the roadside unit that issues the traffic information reminder.

[0031] The construction and maintenance information of the preset roadside unit includes: the installation position, serial number, maintenance log, manufacturer, model, and production batch of the preset roadside unit. When each preset roadside unit is installed and maintained, the installation position, serial number, maintenance log, manufacturer, model, and production batch need to be uploaded to the cloud platform. After the target intelligent vehicle determines that there is a preset roadside unit corresponding to the specified digital certificate near the real - time position of the target intelligent vehicle, it requests the construction and maintenance information of this preset roadside unit from the cloud platform. In this embodiment, it is considered that the construction and maintenance information of each preset roadside unit stored in the cloud platform is authentic and trustworthy.

[0032] Optionally, each construction and maintenance information of the preset roadside unit is converted into a string, multiple strings are concatenated, and an encrypted verification password is obtained by encryption using a secret key. This application does not limit the concatenation method, which can be sequential front-to-back concatenation or insertive concatenation at a specified position. This application also does not limit the encryption secret key. The cloud platform needs to send the string conversion rule, concatenation method, and secret key for encryption to each preset roadside unit and each intelligent vehicle in advance to ensure the consistency of the encryption algorithm.

[0033] The target intelligent vehicle requests the password from the roadside unit that issues traffic information reminders. This roadside unit obtains construction and maintenance information such as installation location, serial number, maintenance log, manufacturer, model, and production batch from local. If this roadside unit is legal, it will encrypt the local construction and maintenance information according to the string conversion rule, concatenation method, and secret key provided by the cloud platform to obtain a feedback password. If this roadside unit is not legal, its local construction and maintenance information is different from the construction and maintenance information obtained by the intelligent vehicle, and it cannot obtain the string conversion rule, concatenation method, and secret key sent by the cloud platform. Therefore, this roadside unit cannot calculate the correct feedback password.

[0034] Subsequently, in response to the request of the target intelligent vehicle, the roadside unit provides the feedback password to the target intelligent vehicle.

[0035] S150. Determine whether the feedback password is consistent with the verification password. If so, jump to S170; if not, jump to S160.

[0036] S160. Do not respond to traffic information reminders and block subsequent reminders of this roadside unit.

[0037] S170. Respond to traffic information reminders.

[0038] If the feedback password is consistent with the verification password, it indicates that the construction and maintenance information obtained by the target intelligent vehicle from the cloud platform is the same as the local construction and maintenance information of this roadside unit. This roadside unit is legal, authentic, and reliable, and responds to traffic information reminders. For example, the target intelligent vehicle adjusts the driving route plan according to dynamic traffic events. If the feedback password is inconsistent with the verification password, it indicates that this roadside unit is not legal, does not respond to traffic information reminders, and blocks subsequent reminders of this roadside unit.

[0039] When the target intelligent vehicle receives a traffic information reminder, it can accurately identify whether the road side unit that issues the information is a legal unit that has been verified and set in advance based on the current position status of the vehicle. Moreover, even after confirming that there is indeed a road side unit that issues information near the location of the intelligent vehicle, it can further accurately distinguish its authenticity by comparing the construction and maintenance information of the road side unit. Furthermore, it can effectively identify and exclude the units forged due to the road side unit stopping working, so as to ensure that when the intelligent vehicle responds to the traffic information reminder and establishes communication, it relies on a trustworthy road side unit, greatly improving the security of data interaction.

[0040] It should be noted that the present application introduces construction and maintenance information to generate an encrypted verification password and requires the RSU to respond to the verification password in real time, essentially forming a dynamic two-way verification mechanism. The construction and maintenance information includes installation location, serial number, maintenance log, manufacturer, model, and production batch. These features are combined with relevance and irreproducibility, having stronger device fingerprint characteristics and cannot be forged only by public information. The present application generates a one-time verification password through the construction and maintenance information and performs real-time backhaul comparison. Even if an attacker obtains the digital certificate, they cannot generate a correct response through the real construction and maintenance information. Even if some fields in the construction and maintenance information may be repeated among multiple RSUs, as long as it includes the installation location, serial number, maintenance log, manufacturer, model, and production batch, a distinguishable device identifier can be formed for password generation and comparison, further increasing the difficulty of forgery and the accuracy of authentication. In summary, the present application uses the construction and maintenance information in the dynamic encryption verification process to construct a security mechanism different from the prior art, no longer relying solely on location matching and certificate verification, significantly improving the forgery recognition ability and overall communication credibility, which constitutes one of the innovation points of the solution of the present application.

[0041] As Figure 3 shown, this embodiment provides a vehicle-mounted device, including: At least one processor; and A memory communicatively connected to at least one of the processors; wherein, The memory stores instructions executable by at least one of the processors, and the instructions are executed by at least one of the processors so that at least one of the processors can execute the above method. At least one processor in this vehicle-mounted device can execute the above method, so it has at least the same advantages as the above method.

[0042] Optionally, the in-vehicle device further includes interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. Each component is interconnected using different buses and can be mounted on a common main board or otherwise installed as needed. The processor can process instructions executed within the in-vehicle device, including instructions for storing graphical information in the memory or on the memory to display a GUI (Graphical User Interface) on an external input / output device (such as a display device coupled to the interface). In other embodiments, if needed, multiple processors can be used in conjunction with multiple memories, and / or multiple buses can be used in conjunction with multiple memories. Similarly, multiple in-vehicle devices can be connected (e.g., as a server array, a set of blade servers, or a multi-processor system), with each device providing part of the necessary operations. Figure 3 Take a processor 301 as an example.

[0043] The memory 302, as a computer-readable storage medium, can be used to store software programs, computer-executable programs, and modules, such as the program instructions / modules corresponding to the vehicle and roadside unit authentication method in the embodiments of the present application. The processor 301 executes various functional applications and data processing of the device by running the software programs, instructions, and modules stored in the memory 302, thereby implementing the above-mentioned vehicle and roadside unit authentication method.

[0044] The memory 302 mainly includes a program storage area and a data storage area. Among them, the program storage area can store an operating system and application programs required for at least one function; the data storage area can store data created according to the use of the terminal, etc. In addition, the memory 302 can include high-speed random access memory and can also include non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices. In some instances, the memory 302 can further include a memory remotely set relative to the processor 301, and these remote memories can be connected to the device through a network. Examples of the above network include but are not limited to the Internet, an enterprise intranet, a local area network, a mobile communication network, and combinations thereof.

[0045] The in-vehicle device may further include: an input device 303 and an output device 304. The processor 301, the memory 302, the input device 303, and the output device 304 can be connected through a bus or other means. Figure 3 Take the connection through a bus as an example.

[0046] The input device 303 can receive input digital or character information. The output device 304 may include a display device, an auxiliary lighting device (e.g., an LED), a tactile feedback device (e.g., a vibration motor), etc. The display device may include, but is not limited to, a liquid crystal display (LCD), a light emitting diode (LED) display, and a plasma display. In some embodiments, the display device may be a touch screen.

[0047] This embodiment provides a computer-readable storage medium, on which computer instructions are stored, and the computer instructions are used to cause a computer to execute the above method. The computer instructions on the computer-readable storage medium are used to cause a computer to execute the above method, and thus have at least the same advantages as the above method.

[0048] The medium in this application may adopt any combination of one or more computer-readable media. The medium may be a computer-readable signal medium or a computer-readable storage medium. The medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples of the medium (a non-exhaustive list) include: an electrical connection having one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this document, the medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0049] The computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, which carries the computer-readable program code. Such a propagated data signal may take various forms, including but not limited to an electromagnetic signal, an optical signal, or any suitable combination of the above. The computer-readable signal medium may also be any computer-readable medium other than the computer-readable storage medium, which can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0050] The program code contained on the computer-readable medium can be transmitted by any suitable medium, including but not limited to wireless, wire, optical fiber, RF (Radio Frequency), etc., or any suitable combination of the above.

[0051] Computer program code for performing the operations of this application can be written in one or more programming languages or combinations thereof. The programming languages include object-oriented programming languages such as Java, Smalltalk, C++, and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, executed as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or, it can be connected to an external computer (for example, by using an Internet service provider to connect through the Internet).

[0052] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the processes or functions described in the embodiments of this application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website, computer, server, or data center to another website, computer, server, or data center by wire, such as coaxial cable, optical fiber, digital subscriber line (DSL), or wirelessly, such as infrared, wireless, microwave, etc. The computer-readable storage medium can be any available medium that the computer can access, or a data storage device such as a server, data center, etc. that contains one or more integrated available media. The available media can be magnetic media (such as floppy disks, hard disks, magnetic tapes), optical media, or semiconductor media, etc. It should be noted that the computer-readable storage medium mentioned in the embodiments of this application can be a non-volatile storage medium, in other words, it can be a non-transitory storage medium.

[0053] It should be understood that various forms of the processes shown above can be used, reordering, adding, or deleting steps. For example, the steps described in this application can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solutions disclosed in this application can be achieved. This is not limited herein.

[0054] The above specific embodiments do not constitute a limitation on the protection scope of this application. Those skilled in the art should understand that various modifications, combinations, sub - combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims

1. A method for authenticating a vehicle and a roadside unit, characterized in that, including: When the target intelligent vehicle receives a traffic information reminder, analyze whether the specified digital certificate of the roadside unit that issues the traffic information reminder meets the verification requirements; When it is determined that the specified digital certificate meets the verification requirements, obtain the real-time position of the target intelligent vehicle, and analyze whether there is a preset roadside unit corresponding to the specified digital certificate near the real-time position of the target intelligent vehicle; If it is determined that there is a preset roadside unit corresponding to the specified digital certificate near the real-time position of the target intelligent vehicle, obtain the construction and maintenance information of the preset roadside unit; Generate an encrypted verification password according to the construction and maintenance information; Obtain the feedback password provided by the roadside unit that issues the traffic information reminder; If the feedback password is consistent with the verification password, respond to the traffic information reminder.

2. The authentication method for a vehicle and a roadside unit according to claim 1, characterized in that Analyzing whether the specified digital certificate of the roadside unit that issues the traffic information reminder meets the verification requirements includes: Conduct validity check, signature verification and certificate chain verification on the specified digital certificate.

3. The authentication method for the vehicle and the roadside unit according to claim 1, characterized in that Analyzing whether there is a preset roadside unit corresponding to the specified digital certificate near the real-time position of the target intelligent vehicle includes: Obtain a pre-established database, where the database includes the positions and digital certificate numbers of multiple preset roadside units; Retrieve according to the number of the specified digital certificate in the database to obtain the position of the preset roadside unit to which the specified digital certificate belongs; Determine whether the real-time position of the target intelligent vehicle and the position of the preset roadside unit are within the communication coverage of the traffic information reminder.

4. The authentication method for a vehicle and a roadside unit according to claim 1, characterized in that, The construction and maintenance information of the preset roadside unit includes: The installation position, serial number, maintenance log, manufacturer, model and production batch of the preset roadside unit.

5. The authentication method for a vehicle and a roadside unit according to claim 4, characterized in that, Generating an encrypted verification password according to the construction and maintenance information includes: Convert each construction and maintenance information of the preset roadside unit into a string respectively; Concatenate multiple strings and encrypt them with a key to obtain an encrypted verification password.

6. The authentication method of the vehicle and the roadside unit according to claim 5, wherein Obtaining the feedback password provided by the roadside unit that issues the traffic information reminder includes: Request the password from the roadside unit that issues the traffic information reminder; The roadside unit responds to the request of the target intelligent vehicle and provides the feedback password to the target intelligent vehicle.

7. An authentication system for a vehicle and a roadside unit, characterized in that, including: A roadside unit for sending a traffic information reminder to the target intelligent vehicle; Feedback the password to the target intelligent vehicle The target intelligent vehicle is used to analyze whether the specified digital certificate of the roadside unit that issues the traffic information reminder meets the verification requirements when receiving the traffic information reminder; when it is determined that the specified digital certificate meets the verification requirements, obtain the real-time position of the target intelligent vehicle, and analyze whether there is a preset roadside unit corresponding to the specified digital certificate near the real-time position of the target intelligent vehicle; If it is determined that there is a preset roadside unit corresponding to the specified digital certificate near the real-time position of the target intelligent vehicle, obtain the construction and maintenance information of the preset roadside unit; generate an encrypted verification password according to the construction and maintenance information; obtain the feedback password provided by the roadside unit that issues the traffic information reminder; If the feedback password is consistent with the verification password, then respond to the traffic information reminder.

8. The authentication system for a vehicle and a roadside unit according to claim 7, wherein Including: A cloud platform for receiving construction and maintenance information uploaded by each preset roadside unit when each preset roadside unit is installed and maintained; And sending the construction and maintenance information to the target intelligent vehicle.

9. A vehicle-mounted device, characterized in that, Including: At least one processor and a memory communicatively connected to at least one of the processors; Wherein, the memory stores instructions executable by at least one of the processors, and the instructions are executed by at least one of the processors so that at least one of the processors can execute the vehicle and roadside unit authentication method according to any one of claims 1-6.

10. A computer-readable storage medium, characterized in that, Computer instructions are stored on the medium, and the computer instructions are used to cause a computer to execute the vehicle and roadside unit authentication method according to any one of claims 1-6.

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