Patent Publication Number: US-2022232014-A1

Title: Vehicle communication method, apparatus, storage medium and program product

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application claims priority to Chinese Patent Application No. 202110528816.1, filed on May 14, 2021, which is hereby incorporated by reference in its entirety. 
     TECHNICAL FIELD 
     Embodiments of the present disclosure relate to artificial intelligence technology, and in particular, to a vehicle communication method, apparatus, storage medium and program product, which can be applied in the field of intelligent drive and vehicle to X. 
     BACKGROUND 
     As the result of the development of technology of vehicle to X (V2X), traffic participants such as vehicles, road infrastructures and pedestrians are mutually connected, having formed a new application scenario with mutual connection and communication. 
     Currently, a batch of intelligent traffic areas have already been established in many regions, and mutual trust and communication between local V2X devices can be achieved in the intelligent traffic area. At the same time, many entities such as alliance ecology, organization and vehicle company original equipment manufacturer (OEM) are also involved in the field of intelligent traffic. 
     SUMMARY 
     The present disclosure provides a vehicle communication method, apparatus, storage medium and program product for realizing mutual trust and communication between vehicles. 
     According to a first aspect of the present disclosure, a vehicle communication method is provided, including: 
     acquiring first root verification information and a first download address corresponding to a first area, and second root verification information and a second download address corresponding to the vehicle; 
     downloading first sub-verification information corresponding to the first area according to the first download address, where the first root verification information is used to verify correctness of the first sub-verification information; 
     downloading second sub-verification information corresponding to the vehicle according to the second download address, where the second root verification information is used to verify correctness of the second sub-verification information; and 
     communicating with a communication device within the first area according to the first root verification information, the first sub-verification information, the second root verification information and the second sub-verification information. 
     According to a second aspect of the present disclosure, a vehicle communication method is provided, including: 
     receiving a download request sent by the vehicle, where the download request is used to request to download access verification information, the download request includes authentication information of the vehicle, and the access verification information includes a first download address of first sub-verification information and first root verification information corresponding to a first area, and a second download address of second sub-verification information and second root verification information corresponding to the vehicle; and 
     authenticating the download request according to the authentication information, and sending the access verification information to the vehicle after authentication is passed. 
     According to a third aspect of the present disclosure, a vehicle communication method is provided, including: 
     acquiring authentication information and a vehicle registration service interface from a server corresponding to a first area; and 
     sending the authentication information and the vehicle registration service interface to the vehicle; 
     where the vehicle registration service interface is used to send a vehicle registration request to the server corresponding to the first area, to obtain a download address of access verification information; the authentication information is used to authenticate the vehicle registration request, and the access verification information includes a first download address of first sub-verification information and first root verification information corresponding to the first area, and a second download address of second sub-verification information and second root verification information corresponding to the vehicle. 
     According to a fourth aspect of the present disclosure, an electronic device is provided, including: 
     at least one processor; and 
     a memory communicatively connected to the at least one processor; where 
     the memory stores an instruction executable by the at least one processor, and the instruction is executed by the at least one processor to cause the at least one processor to execute the method according to the first aspect, the second aspect or the third aspect. 
     According to a fifth aspect of the present disclosure, a non-transitory computer readable storage medium storing a computer instruction is provided, where the computer instruction is used to cause a computer to execute the method according to the first aspect, the second aspect or the third aspect. 
     According to the technical solution of the present disclosure, mutual trust and communication between a vehicle and a V2X device in an intelligent traffic area are achieved. 
     It should be understood that what is described in this section is not intended to identify key or important features of the embodiments of the present disclosure, nor is it used to limit the scope of the present disclosure. Other features of the present disclosure will be easily understood from the following description. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
       The drawings are used for a better understanding of this solution and do not constitute a limitation of the present disclosure, where: 
         FIG. 1  is a schematic diagram of an intelligent traffic scenario; 
         FIG. 2  is a flowchart diagram of a vehicle communication method provided by an embodiment of the present disclosure; 
         FIG. 3  is a flowchart diagram of a vehicle communication method provided by an embodiment of the present disclosure; 
         FIG. 4  is a flowchart diagram of a vehicle communication method provided by an embodiment of the present disclosure; 
         FIG. 5  is a flowchart diagram of a vehicle communication method provided by an embodiment of the present disclosure; 
         FIG. 6  is a schematic diagram of a trusted certificate list provided by an embodiment of the present disclosure; 
         FIG. 7  is a structural schematic diagram of a vehicle communication apparatus provided by an embodiment of the present disclosure; 
         FIG. 8  is a structural schematic diagram of a vehicle communication apparatus provided by an embodiment of the present disclosure; 
         FIG. 9  is a structural schematic diagram of a vehicle communication apparatus provided by an embodiment of the present disclosure; and 
         FIG. 10  is a schematic block diagram of an electronic device used to realize the vehicle communication method of the embodiments of the present disclosure. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     The following description of illustrative embodiments of the present disclosure will be made with reference to the accompanying drawings, which include various details of the embodiments of the present disclosure to facilitate understanding, and they should be regarded as illustrative only. Therefore, those of ordinary skill in the art should realize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description. 
       FIG. 1  is a schematic diagram of an intelligent traffic scenario. As shown in  FIG. 1 , a city is an intelligent traffic demonstration area, and V2X devices in this city are managed by the city&#39;s security certificate management system service (SCMS). By constructing the city&#39;s certificate system (or referred to as trust system and identity system), mutual trust among V2X devices can be realized, so that V2X devices in this city can communicate with each other by using the certificate of this certificate system. At the same time, some entities such as alliance ecology, organization, vehicle company OEM, etc., also ensure mutual trust and communication between their respective V2X devices through their respective certification systems. Illustratively, V2X devices can be roadside devices, vehicles, vehicle-mounted electronic devices, etc. 
     As shown in  FIG. 1 , one certificate system may include a root certificate authority (RCA), and an intermediate certificate authority (ICA) of lower level, a pseudonym certificate authority (PCA), an enrollment certificate authority (ECA) and an application certificate authority (ACA). 
     The RCA is a CA with highest level in one public key infrastructure (PM) system in a V2X security system. The RCA first needs to issue a self-signed certificate to itself, where the self-signed certificate is also referred to as a root certificate, and the root certificate is an end point of all certificate chains in a PM system, that is, the trust anchor of the PM system. The RCA can issue a sub-CA certificate, such as an ECA certificate, a PCA certificate and an ACA certificate, etc., to a subordinate CA according to requirement. The ECA is responsible for issuing a registration certificate to a V2X device such as an on-board unit (OBU), a road side unit (RSU) and a V2X service provider (VSP), etc. The PCA is responsible for issuing a pseudonym certificate to the OBU. The ACA is also referred to as an application authorization CA (AACA), which is in responsible for issuing an identify certificate to the OBU, and issuing an application certificate to the V2X device such as the RSU and the VSP. The ICA is located between the RCA and the CA that issues registration certificates and various authorization certificates, and the ICA is used to expand the hierarchy of the PM system and realize multi-level deployment and multi-level management of the CA. 
     For the aforementioned various entities, the alliance ecology has its own certificate system, that is, its own RCA; the organization usually belongs to a certain certification system and usually has its own ICA; and the vehicle company OEM also belongs to a certain certification system, and usually has its own ECA and PCA. However, the certificate systems of these entities are all developed independently, and they are also independent of the certificate system of the aforementioned intelligent traffic demonstration area. For example, the certificate system of the intelligent traffic demonstration area is called a local certificate system, and the certificate systems of other various entities are called external certificate systems. After entering the intelligent traffic demonstration area, the vehicle of these entities cannot realize mutual trust and communication with V2X device in the intelligent traffic demonstration area. Illustratively, a vehicle company OEM belongs to a certificate system different from that of the intelligent traffic demonstration area. The vehicles of this vehicle company OEM can communicate with each other through the certificate of this vehicle company OEM. However, after driving to the intelligent traffic demonstration area, the vehicles of this vehicle company OEM cannot realize mutual trust and communication with other V2X devices in the intelligent traffic demonstration area. 
     To solve the above problem, in the vehicle communication method provided by the embodiment of the present disclosure, a vehicle outside the intelligent traffic area can not only acquire verification information for communication corresponding to the vehicle itself, but also acquire verification information for mutual communication between V2X devices within the intelligent traffic area, where the verification information may specifically include root verification information and sub-verification information, the root verification information is used to verify the sub-verification information, to ensure correctness and security of the verification information, so that the vehicle outside the intelligent traffic area can realize mutual trust and communication to V2X devices within the intelligent traffic area by using verification information corresponding to the vehicle and verification information corresponding to the intelligent traffic area. 
     In the following, the vehicle communication method provided by the present disclosure will be described in detail with reference to specific embodiments. The vehicle communication method relates to the field of artificial intelligence, and in particular, to the field of intelligent drive and vehicle to X. It shall be understood that, the following specific embodiments may be combined with each other, and same or similar concepts or processes may not be repeated in some embodiments. 
       FIG. 2  is a flowchart diagram of a vehicle communication method provided by an embodiment of the present disclosure. Execution subject of the method may be a vehicle, a vehicle-mounted device, etc. As shown in  FIG. 2 , the method includes: 
     S 201 , acquiring first root verification information and a first download address corresponding to a first area, and second root verification information and a second download address corresponding to a vehicle. 
     The first area in the embodiment of the present disclosure is used to represent an intelligent traffic area, and V2X devices within the intelligent traffic area can verify identity of each other by using verification information corresponding to the intelligent traffic area to realize mutual communication. In the present embodiment, verification information corresponding to the first area includes first sub-verification information and the first root verification information corresponding to the first area. 
     Correspondingly, as mentioned above, a vehicle usually belongs to an entity such as an alliance ecology, an organization or a vehicle company OEM, and verification information corresponding to the vehicle is verification information corresponding to the entity, V2X devices of the entity can verify identity of each other by using the verification information corresponding to the entity to realize mutual communication, and verification information corresponding to the vehicle also include second root verification information and second sub-verification information. 
     For the first area or the vehicle, the sub-verification information may be multiple, thus sub-verification information can adopt an indirect storage manner and be stored in a position corresponding to a download address. For example, the first sub-verification information corresponds to the first download address, and the second sub-verification information corresponds to the second download address. 
     S 202 , downloading the first sub-verification information corresponding to the first area according to the first download address, and downloading the second sub-verification information corresponding to the vehicle according to the second download address. 
     After acquiring the first download address and the second download address, the vehicle may download the first sub-verification information and the second sub-verification information respectively, and the vehicle may verify correctness of the first sub-verification information by using the first root verification information, and verify correctness of the second sub-verification information by using the second root verification information. 
     S 203 , communicating with a communication device within the first area according to the first root verification information, the first sub-verification information, the second root verification information and the second sub-verification information. 
     Upon acquiring the first sub-verification information and the first root verification information corresponding to the first area and its own second root verification information and the second sub-verification information, the vehicle may communicate with the communication device within the first area by using such verification information. The communication device may be a V2X device, such as a vehicle, a road side device, etc. 
     In the vehicle communication method provided by the embodiment of the present disclosure, a vehicle outside the first area can acquire the verification information corresponding to the vehicle itself and the verification information corresponding to the first area, thereby realizing mutual trust and communication with the communication device within the intelligent traffic area by using the verification information corresponding to the vehicle and the verification information corresponding to the intelligent traffic area. 
     Further description will be made on the basis of the above mentioned embodiment. In the embodiment of the present disclosure, the first root verification information and the first download address corresponding to the first area, and the second root verification information and the second download address corresponding to the vehicle can be managed through a mutual trust platform. The mutual trust platform may be a server, a cloud server, a cloud platform, etc., and it will be illustrated by taking the server as an example, a mutual trust platform corresponding to the first area is a server corresponding to the first area, that is, the vehicle can acquire access verification information from the server corresponding to the first area, where the access verification information includes the first root verification information and the first download address corresponding to the first area, and the second root verification information and the second download address corresponding to the vehicle. 
     To describe with reference to practical application, the first root verification information corresponding to the first area is a root certificate of a local certificate system of the first area, and the first sub-verification information is a trusted domain certificate list of the local certificate system of the first area. The second root verification information corresponding to the vehicle is a root certificate of an external certificate system to which the vehicle belongs, and the second sub-verification information corresponding to the vehicle is a trusted domain certificate list of the external certificate system to which the vehicle belongs. 
     The mutual trust platform is used to manage related information of certificates of the local certificate system of the intelligent traffic area and the external certificate system. Illustratively, taking the first area as an example, the mutual trust platform of the first area can maintain one trusted root certificate list (TRCL), and the trusted root certificate list is the above mentioned access verification information, and the trusted root certificate list includes the root certificate and a download address of the trusted domain certificate list of the local certificate system of the first area, and further includes a root certificate and a download address of a trusted domain certificate list of at least one external certificate system, where the at least one external certificate system includes the external certificate system to which the vehicle belongs. The external certificate system may be a certificate system of the above mentioned V2X alliance ecology, a certificate system of the V2X organization or a certificate system of the vehicle company OEM, where such alliance ecology, organization and vehicle company OEM all have subordinate V2X devices. The domain certificate is another certificate other than the root certificate, for example, an ICA certificate, an ECA certificate, a PCA certificate, an ACA certificate, etc. 
     When the vehicle belongs to the external certificate system needs to communicate with the local V2X device of the intelligent traffic area, for example, when a vehicle of an external certificate system drives to an intelligent traffic area, the vehicle can acquire the trusted root certificate list from the mutual trust platform of the intelligent traffic area, and then acquire respective root certificates and download addresses of trusted domain certificate lists of all certificate systems maintained by the mutual trust platform, and such certificate systems include the root certificate and the download address of the trusted domain certificate list of the external certificate system to which the vehicle itself belongs. 
     It can be understood that, the vehicle belonging to the external certificate system can acquire the root certificate and the download address of the trusted domain certificate list of the local certificate system of the area corresponding to the mutual trust platform, and can also acquire root certificates and download addresses of trusted domain certificate lists of the external certificate system to which the vehicle itself belongs and other external certificate systems. Apparently, the local V2X device of the intelligent traffic area can also acquire the root certificate and the download address of the trusted domain certificate list of the at least one external certificate system from the mutual trust platform. 
     The vehicle can download trusted domain certificate lists of respective certificate systems according to download addresses of trusted domain certificate lists of respective certificate systems included in the trusted root certificate list, that is, to obtain trusted domain certificate lists of all certificate systems maintained in the mutual trust platform of the intelligent traffic area. 
     After acquiring root certificates and trusted domain certificate lists of all certificate systems maintained by the mutual trust platform, the vehicle can communicate with the V2X device in the intelligent traffic area corresponding to the mutual trust platform. It can be understood that, the vehicle not only can communicate with the local V2X device, but also can communicate with V2X devices subordinated in other external certificate systems maintained by the mutual trust platform. 
     In the vehicle communication method of the embodiment of the present disclosure, the vehicle can acquire the trusted root certificate list from the mutual trust platform of one intelligent traffic area, so as to acquire related information of the certificate of the local certificate system and the external certificate system of the intelligent traffic area maintained therein, thereby realizing mutual trust and communication to the local V2X device of the intelligent traffic area and the V2X device subordinated in the external certificate system in the intelligent traffic area. 
       FIG. 3  is a flowchart diagram of a vehicle communication method provided by an embodiment of the present disclosure. The method is applied to a server corresponding to a first area. As shown in  FIG. 3 , the method includes: 
     S 301 , receiving a download request sent by a vehicle, where the download request includes authentication information of the vehicle. 
     The download request is used to request to download access verification information, where the access verification information includes a first download address of first sub-verification information and first root verification information corresponding to the first area, and a second download address of second sub-verification information and second root verification information corresponding to the vehicle. 
     The access verification information in the embodiment of the present disclosure is the same as that in the above mentioned embodiments, which will not be repeated herein. The server corresponding to the first area receives the download request sent by the vehicle, where the authentication information included in the download request may be provided in advance by the server corresponding to the first area, such that the server corresponding to the first area can authenticate the download request according to the authentication information. 
     S 302 , authenticating the download request according to the authentication information, and sending the access verification information to the vehicle after authentication is passed. 
     The server corresponding to the first area can authenticate the download request of the vehicle according to an identifier of the vehicle and the authentication information, for example, determine whether the authentication information of the vehicle is expired and so on, and after the authentication is passed, the server corresponding to the first area can send the access verification information to the vehicle, so that the vehicle can acquire the first sub-verification information and the first root verification information corresponding to the first area, and the second sub-verification information and the second root verification information corresponding to the vehicle according to the access verification information, thereby realizing mutual trust and communication to a communication device in the first area. 
     In the vehicle communication method in the embodiment of the present disclosure, the access verification information is maintained in the server corresponding to the first area, and the vehicle can request to the server corresponding to the first area to download the access verification information, thereby realizing mutual trust and communication to the communication device of the first area after the access verification information is acquired. 
     To describe with reference to practical application, a mutual trust platform corresponding to the first area receives the download request sent by the vehicle, and the download request includes a security credential of the vehicle. The download request is used to request to download a trusted root certificate list of the mutual trust platform. The trusted root certificate list includes respective root certificates and download addresses of trusted domain certificate lists of a local certificate system of the mutual trust platform and at least one external certificate system, where the at least one external certificate system includes the external certificate system to which the vehicle belongs. 
     The trusted root certificate list of the mutual trust platform in the embodiment of the present disclosure is the same as that in the above mentioned embodiments, which will not be repeated herein. The mutual trust platform receives the download request sent by the vehicle, where the security credential included in the download request is the authentication information, and the security credential may be provided in advance by the mutual trust platform, for example, the security credential may be a certificate or a token, etc. 
     The mutual trust platform corresponding to the first area authenticates the download request of the vehicle according to the security credential, for example, determine whether the security credential of the vehicle is expired, and after authentication is passed, the mutual trust platform can send the trusted root certificate list to the vehicle, such that the vehicle can acquire trusted domain certificate lists of respective certificate systems according to the download address of the trusted domain certificate list of the local certificate system and the external certificate system in the trusted root certificate list, thereby realizing mutual trust and communication to the local V2X device in the first area and the V2X device in other external certificate systems. 
     In the vehicle communication method in the embodiment of the present disclosure, a trusted root certificate list is provided by the mutual trust platform, and the vehicle requests to the mutual trust platform to download the trusted root certificate list, the mutual trust platform can authenticate through the security credential in the download request and send the trusted root certificate list to the vehicle after authentication is passed, such that the vehicle can acquire related information of the certificate of the local certificate system and the external certificate system of the intelligent traffic area maintained therein, thereby realizing mutual trust and communication to the local V2X device of the intelligent traffic area and the V2X device subordinated in the external certificate system in the intelligent traffic area. 
       FIG. 4  is a flowchart diagram of a vehicle communication method provided by the embodiment of the present disclosure. The method is applied to a server corresponding to a vehicle. As shown in  FIG. 4 , the method includes: 
     S 401 , acquiring authentication information and a vehicle registration service interface from a server corresponding to a first area. 
     In a scenario where the vehicle needs to communicate with a V2X device in an intelligent traffic area, the vehicle can first acquire the authentication information and the vehicle registration service interface from the server corresponding to the first area through the server corresponding to the vehicle. The server corresponding to the vehicle may be a server of an entity to which the vehicle belongs to. The vehicle registration service interface is used to send a vehicle registration request to the server corresponding to the first area by using the authentication information to obtain a download address of access verification information, the authentication information is used to authenticate the vehicle registration request. The access verification information includes a first download address of first sub-verification information and first root verification information corresponding to the first area, and a second download address of second sub-verification information and second root verification information corresponding to the vehicle. The access verification information is the same as that in the above mentioned embodiments, which will not be repeated herein. 
     S 402 , sending the authentication information and the vehicle registration service interface to the vehicle. 
     The server corresponding to the vehicle acquires the authentication information and the vehicle registration service interface and send them to the vehicle, such that the vehicle can send the vehicle registration request to the server corresponding to the first area by using the authentication information to obtain the download address of the access verification information, and then send a download request to the server corresponding to the first area according to the download address of the access verification information to obtain the first sub-verification information and the first root verification information corresponding to the first area, and the second sub-verification information and the second root verification information corresponding to the vehicle. Then the vehicle can further realize mutual trust and communication to a communication device within the first area according to the first sub-verification information and the first root verification information corresponding to the first area, and the second sub-verification information and the second root verification information corresponding to the vehicle. 
     In the vehicle communication method in the embodiment of the present disclosure, the server corresponding to the vehicle acquires the authentication information and the vehicle registration service interface through the server corresponding to the first area, and sends them to a subordinated vehicle, so that the vehicle can request to the server corresponding to the first area to register the vehicle to obtain the access verification information, so as to obtain the first sub-verification information and the first root verification information corresponding to the first area, and the second sub-verification information and the second root verification information corresponding to the vehicle, thereby realizing mutual trust and communication to the communication device within the first area. 
     Description will be made with reference to practical application. The server corresponding to the vehicle may be the server of the entity to which the vehicle belongs to, that is, the server of the external certificate system to which the vehicle belongs. The server of the external certificate system to which the vehicle belongs acquires a security credential and the vehicle registration service interface from a mutual trust platform of the first area, where the security credential is the above mentioned authentication information. 
     The server of the external certificate system to which the vehicle belongs send the security credential and the vehicle registration service interface to respective vehicles subordinated to the external certificate system, such that the vehicle can send the vehicle registration request to the mutual trust platform of the first area by using the security credential, to obtain a download address of a trusted root certificate list of the mutual trust platform, similar to the above mentioned embodiment, the trusted root certificate list includes download addresses of respective root certificates and trusted domain certificate lists of a local certificate system of the area to which the mutual trust platform belongs to and at least one external certificate system. Thus the vehicle can further obtain trusted domain certificate lists of respective certificate systems according to download addresses of trusted domain certificate lists of respective certificate systems, and realize mutual trust and communication to the local V2X device in the intelligent traffic area and V2X devices of other external certificate systems. 
     In the vehicle communication method of the embodiment of the present disclosure, a server device of the external certificate system to which the vehicle belongs acquires the security credential and the vehicle registration service interface through the mutual trust platform, and sends them to respective subordinated vehicles, such that the vehicle can request registration to the mutual trust platform to acquire trusted root certificate list of the mutual trust platform, and acquire related information of the certificate of the local certificate system and the external certificate system through the trusted root certificate list, thereby realizing mutual trust and communication to the local V2X device of the intelligent traffic area and the V2X device subordinated in the external certificate system in the intelligent traffic area. 
     On the basis of the above embodiments, with reference to the interaction process between the server of the external certificate system, the mutual trust platform and the vehicle shown in  FIG. 5 , the vehicle communication method provided by the embodiments of the present disclosure will be further described. It should be noted that, in the following embodiment, as shown in  FIG. 5 , the method includes: 
     S 501 , the server of the external certificate system sends a mutual trust registration request to the mutual trust platform. 
     The mutual trust registration request includes registration information of the external certificate system and certificate information of the external certificate system. The server of the external certificate system is the server corresponding to the above vehicle. 
     The registration information may include information of the external certificate system such as an organization name, a category (such as alliance ecology, organization or vehicle company OEM), an organization credential, etc. The registration information may further include a manner of vehicle registration authentication, for example, quata-License (License), vehicle white list, etc. The quata License restricts a number of V2X devices of the external certificate system that can access to the mutual trust platform, and the vehicle white list restricts specific vehicle of the external certificate system that can access the mutual trust platform. 
     The certificate information of the external certificate system is related to the category of the external certificate system, the certificate information of the external certificate system is the verification information corresponding to the server corresponding to the vehicle, optionally, the verification information corresponding to the server corresponding to the vehicle includes the download address of the second sub-verification information and the second root verification information corresponding to the vehicle, for example, for the alliance ecology, the certificate information needs to be included in its registration request is the root certificate and the download address of the trusted domain certificate list of the certificate system of the alliance ecology, or, the verification information corresponding to the server corresponding to the vehicle includes the sub-verification information corresponding to the server corresponding to the vehicle, for example, for an organization or a vehicle company OEM, the certificate information needs to be included in the registration request thereof is a domain certificate of the certificate system of the organization or the vehicle company OEM. 
     In addition, it should be further noted that, in addition to sending the registration request of the external certificate system to the mutual trust platform online, the registration request can also be sent offline, for example, a management person of the external certificate system performs offline application by the means of mail. 
     S 502 , the mutual trust platform generates the security credential of the external certificate system, and sends the security credential and the V2X device registration service interface to the server of the external certificate system. 
     The mutual trust platform first examines the registration request of the external certificate system according to the registration information, the mutual trust platform can examine the registration request of the external certificate system according to the information, such as the organization name, the organization credential etc., in the registration information to determine whether the external certificate system can access to the mutual trust platform, thereby improving security. After the examination is passed, the certificate information of the external certificate system is added to the trusted root certificate list. At the same time, the mutual trust platform can also store and record the information carried in the registration request of the external certificate system for convenience of later inquiry. 
     Optionally, the certificate information of the external certificate system includes the root certificate and the download address of the trusted domain certificate list of the external certificate system, the mutual trust platform adds the root certificate and the download address of the trusted domain certificate list of the external certificate system to the trusted root certificate list. 
     Optionally, the certificate information of the external certificate system includes the trusted domain certificate of the external certificate system; the mutual trust platform generates a common root certificate and trusted domain certificate list of the external certificate system and other external certificate systems according to the trusted domain certificate of the external certificate system and trusted domain certificates of other external certificate systems; the common root certificate and trusted domain certificate list of the external certificate system and other external certificate systems are added to the trusted root certificate list. 
     For example, as shown in  FIG. 6 , when the external certificate system is the alliance ecology, the certificate information thereof includes the root certificate and the download address of the trusted domain certificate list of the alliance ecology. When the external certificate system is the organization or the vehicle company OEM, the certificate information thereof includes the trusted domain certificate of the organization or the vehicle company OEM. The trusted root certificate list authority (TRCLA) of the mutual trust platform adds the root certificate and the download address of the trusted domain certificate list of the alliance ecology to the trusted root certificate list. And the trusted domain certificates of all organizations and vehicle company OEM accessed to the mutual trust platform are generated as a document of the trusted domain certificate list of the organization and the vehicle company OEM, and its root certificate is generated. The document of the trusted domain certificate list of the organization and the vehicle company OEM are signed by TRCLA, and services of updating and downloading are provided. The mutual trust platform adds the download address of the trusted domain certificate list and the root certificate of the organization and the vehicle company OEM to the trusted root certificate list. In addition, the trusted root certificate list further includes the root certificate and the download address of the trusted domain certificate list of the local certificate system of the intelligent traffic area corresponding to the mutual trust platform. It should be noted that, when the external certificate system does not request to register and access to the mutual trust platform, the trusted root certificate list only includes the root certificate and the download address of the trusted domain certificate list of the local certificate system. 
     After the examination by the mutual trust platform to the mutual trust registration request is passed, the security credential is generated for the external certificate system, and the security credential can be used for authentication of the vehicle. At the same time, the security credential further includes identifying information of the external certificate system, which can be used to distinguish different external certificate systems. The security credential can be in a form of a certificate or a character string, etc., which is not limited by the embodiment of the present disclosure. 
     S 503 , the server of the external certificate system sends the security credential and the vehicle registration service interface to the vehicle subordinated to the external certificate system. 
     S 504 , the vehicle sends the vehicle registration request to the mutual trust platform according to the vehicle registration service interface. 
     The vehicle registration request includes the security credential of the vehicle, where the security credential is used by the mutual trust platform to authenticate the vehicle registration request. 
     After entering the intelligent traffic area, the vehicle sends the vehicle registration request to the mutual trust platform according to the vehicle registration service interface of the intelligent traffic area, to request to access to the mutual trust platform. The registration request further includes, in addition to the security credential, an identifier of the vehicle, where the identifier of the vehicle can be used to exclusively identify the vehicle, for example, the identifier may be information such as a vehicle identification number (VIN) or a vehicle license plate number, etc., and the VIN is consisted of characters or numbers, which is a unique set of numbers used on a vehicle, and can identify information, such as a manufacturer, an engine, a chassis serial number or other performance, etc., of the car. 
     S 505 , the mutual trust platform authenticates the vehicle registration request according to the security credential, and sends the download address of the trusted root certificate list to the vehicle after authentication is passed. 
     The mutual trust platform verifies whether the security credential of the vehicle is valid, whether the License of the external certificate system to which the vehicle belongs is full, or whether the vehicle is in the vehicle white list of the external certificate system to which the vehicle belongs, stores the information of the vehicle after authentication is passed, and returns the TRCLA certificate and the download address of the trusted root certificate list to the vehicle. The mutual trust platform uses the security credential to authenticate the vehicle registration request, thereby ensuring security. 
     S 506 , the vehicle sends the download request to the mutual trust platform according to the download address of the trusted root certificate list of the mutual trust platform. 
     The download request includes the security credential of the vehicle, where the security credential is used by the mutual trust platform to authenticate the download request. 
     After successfully registering the mutual trust platform, the vehicle can periodically request to the TRCLA of the mutual trust platform to download the trusted root certificate list, to acquire the latest trusted root certificate list. The download request may further include, in addition to the security credential, the identifier of the vehicle. 
     S 507 , the mutual trust platform authenticates the download request according to the security credential, and sends the trusted root certificate list to the vehicle after authentication is passed. 
     The TRCLA of the mutual trust platform will authenticate the download request of the vehicle, for example, inspect whether the vehicle is registered, and authenticate whether the security credential of the vehicle is valid, and return the trusted root certificate list to the vehicle that is successfully authenticated. The mutual trust platform uses the security credential to authenticate the download request, thereby ensuring security. 
     S 508 , the vehicle download the trusted domain certificate list according to the download address of the trusted domain certificate list, and import the root certificate and the trusted domain certificate list to a trust certificate list of the vehicle. 
     The trust certificate list is trust verification information of the vehicle. 
     S 509 , the vehicle communicates with the V2X device in the area corresponding to the mutual trust platform according to the trust certificate list. 
     In the vehicle communication method provided by the embodiments of the present disclosure, a trust island of respective certificate systems is broken through a mutual trust platform, when the respective certificate systems, such as alliance ecology, organization and vehicle company OEM, wish to access the intelligent traffic area, the mutual trust registration application can be raised to the mutual trust platform, and such external certificate systems can be brought into a trust domain for management after the mutual trust platform accepts the mutual trust registration application. Afterwards, the mutual trust platform can grant the security credential to such external certificate systems, such that the vehicle of the external certificate system can use the security credential to register to the mutual trust platform, and acquire related certificates of the respective certificate systems from the mutual trust platform, thereby realizing information safe authentication between the local V2X device and vehicles of different external certificate systems, and realizing mutual trust and communication. At the same time, the mutual trust platform realizes fine-grained management to the V2X device, such that the V2X can access to the network in order, which avoids random spread of information of the V2X device which will cause traffic congestion or disturb traffic order, and avoids hazards like traffic accident, etc. 
       FIG. 7  is a structural schematic diagram of a vehicle communication apparatus provided by an embodiment of the present disclosure. As shown in  FIG. 7 , the vehicle communication apparatus  700  includes: 
     an acquiring module  701 , configured to acquire first root verification information and a first download address corresponding to a first area, and second root verification information and a second download address corresponding to the vehicle; 
     a downloading module  702 , configured to download first sub-verification information corresponding to the first area according to the first download address, where the first root verification information is used to verify correctness of the first sub-verification information; and download second sub-verification information corresponding to the vehicle according to the second download address, where the second root verification information is used to verify correctness of the second sub-verification information; 
     a communicating module  703 , configured to communicate with a communication device within the first area according to the first root verification information, the first sub-verification information, the second root verification information and the second sub-verification information. 
     In an embodiment, the acquiring module  701  includes: 
     an acquiring unit, configured to acquire access verification information from a server corresponding to the first area, where the access verification information includes the first root verification information and the first download address corresponding to the first area, and the second root verification information and the second download address corresponding to the vehicle. 
     In an embodiment, the acquiring unit includes: 
     a first sending unit, configured to send a download request to the server corresponding to the first area according to a download address of the access verification information, where the download request includes authentication information of the vehicle, and the authentication information is used to authenticate the download request; 
     a first receiving unit, configured to receive the access verification information sent by the server corresponding to the first area. 
     In an embodiment, the communication apparatus  700  of the V2X device further includes: 
     a sending module, configured to send a vehicle registration request to the server corresponding to the first area, where the vehicle registration request includes the authentication information of the vehicle, and the authentication information is used to authenticate the vehicle registration request; 
     a receiving module, configured to receive a download address of the access verification information sent by the server corresponding to the first area. 
     In an embodiment, the sending module includes: 
     a second receiving unit, configured to receive the authentication information and a vehicle registration service interface sent by a server corresponding to the vehicle, where the authentication information and the vehicle registration service interface are acquired in advance by the server corresponding to the vehicle from the server corresponding to the first area; 
     a second sending unit, configured to send the vehicle registration request to the server corresponding to the first area according to the vehicle registration service interface. 
     In an embodiment, the communicating module  703  includes: 
     an importing unit, configured to import the first root verification information, the first sub-verification information, the second root verification information and the second sub-verification information into trust verification information of the vehicle; 
     a communicating unit, configured to communicate with the communication device within the first area according to the trust verification information. 
     The vehicle communication apparatus provided by the embodiment of the present disclosure can be used to execute the vehicle communication method in the above method embodiments, and the realization principle and the technical effect thereof are similar, which will not be repeated herein. 
       FIG. 8  is a structural schematic diagram of a vehicle communication apparatus provided by an embodiment of the present disclosure. As shown in  FIG. 8 , the vehicle communication apparatus  800  includes: 
     a receiving module  801 , configured to receive a download request sent by the vehicle, where the download request is used to request to download access verification information, the download request includes authentication information of the vehicle, and the access verification information includes a first download address of first sub-verification information and first root verification information corresponding to a first area, and a second download address of second sub-verification information and second root verification information corresponding to the vehicle; 
     a sending module  802 , configured to authenticate the download request according to the authentication information, and send the access verification information to the vehicle after authentication is passed. 
     In an embodiment, the receiving module  801  is further configured to receive a vehicle registration request sent by the vehicle, where the vehicle registration request includes the authentication information; 
     the sending module  802  is further configured to authenticate the vehicle registration request according to the authentication information, and send a download address of the access verification information to the vehicle after authentication is passed. 
     In an embodiment, the receiving module  801  is further configured to receive a mutual trust registration request sent by a server corresponding to the vehicle, where the mutual trust registration request includes verification information corresponding to the server corresponding to the vehicle; 
     the apparatus further includes: a processing module, configured to add the verification information corresponding to the server corresponding to the vehicle into the access verification information, and generate the authentication information; 
     the sending module  802  is further configured to send the authentication information and a vehicle registration service interface to the server corresponding to the vehicle, so that the server corresponding to the vehicle sends the authentication information and the vehicle registration service interface to the vehicle. 
     In an embodiment, the verification information corresponding to the server corresponding to the vehicle includes the second download address of the second sub-verification information and the second root verification information. 
     In an embodiment, the verification information corresponding to the server corresponding to the vehicle includes sub-verification information corresponding to the server corresponding to the vehicle; 
     the processing module includes: 
     a generating unit, configured to generate the second sub-verification information and the second root verification information according to the sub-verification information corresponding to the server corresponding to the vehicle and sub-verification information corresponding to other servers corresponding to other vehicles; 
     a processing unit, configured to add the second download address of the second sub-verification information and the second root verification information into the access verification information. 
     The vehicle communication apparatus provided by the embodiment of the present disclosure can be used to execute the vehicle communication method in the method embodiments, and the realization principle and the technical effect thereof are similar, which will not be repeated herein. 
       FIG. 9  is a structural schematic diagram of a vehicle communication apparatus provided by an embodiment of the present disclosure. As shown in  FIG. 9 , the vehicle communication apparatus  900  includes: 
     an acquiring module  901 , configured to acquire authentication information and a vehicle registration service interface from a server corresponding to a first area; 
     a sending module  902 , configured to send the authentication information and the vehicle registration service interface to the vehicle; 
     where the vehicle registration service interface is used to send a vehicle registration request to the server corresponding to the first area, to obtain a download address of access verification information; the authentication information is used to authenticate the vehicle registration request, and the access verification information includes a first download address of first sub-verification information and first root verification information corresponding to the first area, and a second download address of second sub-verification information and second root verification information corresponding to the vehicle. 
     In an embodiment, the acquiring module  901  includes: 
     a sending unit, configured to send a mutual trust registration request to the server corresponding to the first area, where the mutual trust registration request includes verification information corresponding to a server corresponding to the vehicle; 
     a receiving unit, configured to receive the authentication information and the vehicle registration service interface sent by the server corresponding to the first area. 
     In an embodiment, the verification information corresponding to the server corresponding to the vehicle includes the second download address of the second sub-verification information and the second root verification information. 
     In an embodiment, the verification information corresponding to the server corresponding to the vehicle includes sub-verification information corresponding to the server corresponding to the vehicle. 
     The vehicle communication apparatus provided by the embodiment of the present disclosure can be used to execute the vehicle communication method in the method embodiments, and the realization principle and the technical effect thereof are similar, which will not be repeated herein. 
     According to the embodiment of the present disclosure, the present disclosure further provides an electronic device and a non-transitory computer readable storage medium storing a computer instruction. 
     According to the embodiment of the present disclosure, the present disclosure further provides a computer program product, where the program product includes: a computer program stored in a readable storage medium, and at least one processor of an electronic device can read the computer program from the readable storage medium, and the at least one processor executes the computer program to cause the electronic device to execute the method provided by any one of the above embodiments. 
       FIG. 10  is a schematic block diagram of an electronic device used to realize the vehicle communication method of the embodiments of the present disclosure. The electronic device intends to represent digital computers of various forms, for example, laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers and other suitable computers. The electronic device can also represent mobile apparatuses of various forms, for example, personal digital assistance, cellular phone, smart phones, wearable devices and other similar computing apparatuses. The components, their connections and relationships, and their functions shown herein are only examples, and are not intended to limit the implementation of the present disclosure described and/or claimed herein. The electronic device can be servers of the vehicle, the V2X device, the mutual trust platform or the external certificate system in the above embodiments. 
     As shown in  FIG. 10 , the electronic device  1000  includes a computing unit  1001 , which can execute various appropriate actions and processing according to a computer program stored in a read-only memory (ROM)  1002  or a computer program loaded from a storage unit  1008  to a random access memory (RAM)  1003 . The RAM  1003  may further store various programs and data needed for the electronic device  1000  to operate. The computing unit  1001 , the ROM  1002  and the RAM  1003  are connected to each other through a bus  1004 . An input/output (I/O) interface  1005  is also connected to the bus  1004 . 
     A plurality of components in the electronic device  1000  are connected to the I/O interface  1005 , including: an input unit  1006 , such as a keyboard, a mouse, etc.; an output unit  1007 , such as various types of displays, speakers, etc.; a storage unit  1008 , such as a magnetic disk, an optical disk, etc.; and a communicating unit  1009 , such as a network card, a modem, a wireless communication transceiver, etc. The communicating unit  1009  allows the electronic device  1000  to exchange information/data with other devices through a computer network such as the Internet and/or various telecommunication networks. 
     The computing unit  1001  may be various universal and/or specific processing components having ability of processing and computing. Some examples of the computing unit  1001  include, but are not limited to, central processing units (CPU), graphic processing units (GPU), various specific artificial intelligent (AI) computing chips, various computing units running machine learning module algorithms, digital signal processors (DSP), and any appropriate processors, controllers and micro-controllers, etc. The computing unit  1001  executes respective methods and processing described above, for example, the vehicle communication method. For example, in some embodiments, the vehicle communication method can be realized as a computer software program, which is tangibly contained in a machine-readable medium such as the storage unit  1008 . In some embodiments, part or all of a computer program can be loaded and/or installed on the electronic device  1000  through the ROM  1002  and/or the communicating unit  1009 . When the computer program is loaded on the RAM  1003  and is executed by the computing unit  1001 , one or more steps of the vehicle communication method described above can be executed. Alternatively, in other embodiments, the computing unit  1001  can be configured to execute the vehicle communication method through any other appropriate manners (for example, by means of firmware). 
     Various embodiments of the systems and technologies described above herein can be implemented in digital electronic circuit system, integrated circuit system, field programmable gate array (FPGA), application specific integrated circuit (ASIC), application specific standard product (ASSP), system on chip (SOC), load programmable logic device (CPLD), computer hardware, firmware, software, and/or the combination thereof. These various embodiments may include: being implemented in one or more computer programs, the one or more computer programs can be executed and/or interpreted on a programmable system including at least one programmable processor, which can be a specific or universal programmable processor that can receive data and instructions from a storage system, at least one input apparatus, and at least one output apparatus and transmit the data and instructions to the storage system, the at least one input apparatus, and the at least one output apparatus. 
     The program code for implementing the method of the present disclosure can be written in any combination of one or more programming languages. These program codes can be provided to a processor or controller of a universal computer, a specific computer or other programmable data processing apparatuses, so that the program codes, when executed by the processor or controller, cause the functions/operations specified in the flowchart and/or block diagrams to be implemented. The program codes can be completely executed on the machine, partially executed on the machine, partially executed on the machine as an independent software package and partially executed on the remote machine or completely executed on the remote machine or server. 
     In the context of the present disclosure, the machine-readable medium can be a tangible medium that can contain or store a program for use by an execution system, an apparatus or a device or for use in connection with the execution system, the apparatus or the device. The machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. The machine-readable medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatuses or devices, or any suitable combination thereof. More specific examples of the machine-readable storage medium may include electrical connection based on one or more wires, portable computer disk, hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. 
     To provide interaction with users, the systems and technologies described herein can be implemented on a computer with a display device (for example, CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to users; and a keyboard and pointing device (for example, a mouse or a trackball) through which a user can provide input to the computer. Other kinds of apparatuses can also be used to provide interaction with users; for example, the feedback provided to the user can be any form of sensory feedbacks (for example, visual feedback, auditory feedback, or tactile feedback); and can receive the input from the user in any form (including acoustic input, voice input or tactile input). 
     The systems and technologies described herein can be implemented in a computing system including a back-end component (e.g., as a data server), or a computing system including a middleware component (e.g., an application server), or a computing system including a front-end component (e.g., a user computer with a graphical user interface or a web browser through which users can interact with the embodiments of the systems and technologies described herein), or computing system including any combination of such back-end components, middleware components, or front-end components. The components of the system can be connected to each other by any form or medium of digital data communication (for example, communication network). Examples of communication networks include local area network (LAN), wide area network (WAN) and the Internet. 
     The computer system may include a client and a server. The client and the server are generally far away from each other and usually interact through a communication network. The relationship between the client and the server is generated by running computer programs having a client-server relationship with each other on corresponding computers. The server can be a cloud server, also known as cloud computing server or cloud host, which is a host product in the cloud computing service system and solves the defects of the traditional physical host and VPS service (“Virtual Private Server”, or “VPS” for short), which are difficult to manage and weak in business scalability. The server can also be a distributed system server or a server combined with block chain. 
     It should be understood that various forms of processes shown above can be used to reorder, add or delete steps. For example, the various steps described in the present disclosure can be executed in parallel, sequentially or in a different order, so long as the desired results of the technical solution disclosed in the present disclosure can be achieved, which is not limited herein. 
     The above specific embodiments do not limit the scope of protection of the present disclosure. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to the design requirements and other factors. Any modification, equivalent substitution and improvement and so on within the spirit and principle of the present disclosure should be included in the scope of protection of the present disclosure.