A vehicle carbon emission data secure transmission system based on signal authentication technology

Abstract

The present invention provides a vehicle carbon emission data secure transmission system based on signal authentication technology, wherein the system includes: a data acquisition system for reading data from vehicle equipment and sensors in real time and storing it in the internal network of the vehicle-mounted unit in preparation for data transmission; a signal authentication system for bidirectional identity authentication between vehicle users and roadside units during information transmission; an information communication system for secure encrypted communication between vehicle users and roadside units after the signal authentication system completes bidirectional identity authentication; and an audit monitoring system for receiving data and recording the behavior logs of each system for auditing and tracing. The vehicle carbon emission data secure transmission system of the present invention can realize the secure communication of vehicle carbon emission data from vehicle sensors to a monitoring center, protecting the security and integrity of the data during transmission.

Description

Technical Field

[0001] The present invention relates to the field of vehicle networking technology, and in particular to a vehicle carbon emission data secure transmission system based on signal authentication technology. Background Art

[0002] The Internet of Vehicles connects vehicles to the Internet, enabling real-time information exchange between vehicles and between vehicles and infrastructure, including vehicle location, traffic information, road conditions, weather information, and other information, thereby realizing an intelligent transportation system and providing a safer and more efficient travel experience.

[0003] Vehicle exhaust emissions are a major component of carbon emissions from my country's transportation sector. Therefore, monitoring vehicle emissions is crucial for environmental protection and regulation. Regulators and environmental protection organizations urgently require accurate, real-time emissions data to assess vehicles' environmental impacts and take appropriate action. This necessitates ensuring that vehicle emissions data is transmitted accurately and completely to monitoring centers for real-time inspection and review.

[0004] However, the communication between vehicles and infrastructure is established in public wireless channels. The openness of these channels exposes the transmitted information to security risks. Sensitive information may be vulnerable to attacks by malicious users during transmission, such as eavesdropping, impersonation, interception, and tampering. At the same time, the vehicle sending the information may also be tracked and its private information may be stolen.

[0005] Given the characteristics of the Internet of Vehicles, such as large amounts of data, extensive privacy implications, and high security risks, the communication system needs to protect the privacy and security of the communication process while also meeting the computing requirements of fast response and low latency.

[0006] Signal authentication technology is a commonly used method for ensuring data transmission security in the Internet of Vehicles (IoV). It can be used to verify the identities of data senders and receivers and ensure that data has not been leaked or tampered with during transmission. Common signal authentication technologies include digital signatures, message authentication codes, digital certificates, and digital digests. Furthermore, researchers have improved upon these technologies by introducing solutions such as fog nodes, public key infrastructure, blind signatures, and anonymous certificates to enhance message authentication.

[0007] However, current technical solutions have yet to achieve a perfect balance between addressing the dual challenges of high security and real-time efficiency required in signal authentication, while also addressing vehicle carbon emissions data. Therefore, it is crucial to continue exploring and optimizing relevant technologies to better meet the security and efficiency requirements of the connected vehicle. Summary of the Invention

[0008] The purpose of the present invention is to make up for the shortcomings of the above-mentioned existing technologies and provide a vehicle carbon emission data security transmission system based on signal authentication technology: in view of the characteristics of large volume and high computing requirements of carbon emission data, by utilizing encryption technology and signal authentication mechanism, an efficient and highly secure identity authentication and encryption communication process is realized between the vehicle and the roadside unit, thereby ensuring the security of vehicle carbon emission data transmitted from the vehicle to the monitoring center, and effectively preventing the data from being tampered with or leaked.

[0009] The present invention provides a vehicle carbon emission data security transmission system based on signal authentication technology, comprising:

[0010] The data acquisition system is used to read carbon emission-related data from on-board devices and sensors (such as GPS devices, OBD devices, emission sensors, etc.) in real time and store this data in the internal network of the on-board unit for subsequent data transmission;

[0011] The signal authentication system is used to ensure that the vehicle user and the roadside unit (RSU) can verify each other's identity before the vehicle transmits carbon emission data to the RSU. The following steps are followed:

[0012] 1) System deployment: The trusted center (TA) sets the system key and defines the system functions;

[0013] 2) Roadside unit registration: The TA assigns an identity number to the roadside unit RSU, calculates the RSU key group and digest, and sends the information to the roadside unit;

[0014] 3) Vehicle registration: The vehicle submits an identity registration application to the TA. After the TA verifies that the identity is valid, it configures an anti-tampering device TPD for the vehicle user and generates a long-term pseudo identity and password.

[0015] 4) Vehicle authentication request: When a vehicle enters the coverage area of ​​the RSU, it uses the system key in the TPD to generate a short-term pseudo-identity, key group and digest, calculates the vehicle authentication parameters and sends an authentication request to the RSU;

[0016] 5) RSU signal authentication: The RSU receives the vehicle authentication request and uses the system key and encryption algorithm to verify the timestamp and vehicle identity of the vehicle information. If the authentication is successful, the RSU authentication parameters are calculated and passed back to the vehicle.

[0017] 6) Vehicle signal authentication: The vehicle receives the authentication information of the RSU, obtains the key and summary of the corresponding RSU by calling the system function, and then uses the system key and encryption algorithm to verify the timestamp of the RSU information and the RSU identity. After successful authentication, the subsequent secure communication process can be carried out.

[0018] The information communication system is used to achieve secure encrypted communication between the vehicle and the roadside unit after the signal authentication system successfully completes the two-way authentication. The following steps are followed:

[0019] 1) Calculate the same session encryption key on the vehicle user side and the roadside unit side respectively;

[0020] 2) The vehicle user uses the session encryption key to encrypt carbon emission data information;

[0021] 3) The vehicle transmits the encrypted data to the roadside unit through an open wireless channel;

[0022] 4) The roadside unit receives the encrypted information and decrypts the data using the same session encryption key to obtain accurate and complete carbon emission data, and sends the data to the monitoring center through a secure channel.

[0023] The audit monitoring system is used to receive carbon emission data sent by roadside units and record the operations of each vehicle user, roadside unit and the behavior log of each system, including access, upload, modification and other operations, to provide a reliable basis for subsequent audit and traceability work.

[0024] Preferably, data transmission between TA, TPD, and vehicles, data transmission between TA and RSU, and the calling of system functions are all carried out through secure channels, thereby ensuring that relevant data will not be tampered with or leaked during transmission in public wireless channels.

[0025] Preferably, the RSU updates the identity number, key group and summary by calling the system function Update() periodically or after reaching a specified number of communication transmissions; during the two-way authentication process, the vehicle queries the key and summary of the roadside unit by calling the system function Get().

[0026] Preferably, the validity of the information is verified by recording the timestamp of the communication information, and the identity of the vehicle user and RSU and the security of the communication information are verified by using the pseudo identity, key group and related parameters calculated by the system key and encryption algorithm.

[0027] Preferably, the system key S and encryption algorithm are used to calculate the identity, key group, and digest of the vehicle user and roadside unit. During the two-way authentication process between the vehicle and the RSU, the rationality of the authentication information timestamp is first verified, and then the identity authentication is performed through the authentication functions A(vid, Pv, M, P) and A(RID, Pr, N, P). Among them, Pv and Pr represent the public keys of the vehicle with pseudo-identity vid and the RSU with identity number RID, respectively, M() and N() represent the functions for calculating the vehicle user or RSU identity authentication parameters using the system private key, and P is the system public key. The result of the authentication function is successful only when the identity, key group, and digest of the vehicle user or roadside unit are correctly generated using the system key S and encryption algorithm.

[0028] Preferably, after the vehicle and RSU complete bidirectional identity authentication, the same session encryption key is calculated using the session key calculation function Key(x, y, Hv, Hr) on the vehicle user side and the roadside unit side, respectively. x and y represent the minimum parameter set that can determine the public key composition of the vehicle user and RSU, respectively, and Hv and Hr represent the digests of the vehicle user and RSU, respectively. The digest Hr is obtained on the vehicle user side and the roadside unit side, respectively, through system functions and TA transmission, and both transmission channels are secure.

[0029] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the preferred embodiments of the present invention will be described below, and the details are as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the structural principle of a vehicle carbon emission data secure transmission system based on signal authentication technology according to the present invention;

[0031] Figure 2 Flowchart of a data acquisition system according to an embodiment of the present invention;

[0032] Figure 3 Flowchart of a signal authentication system according to an embodiment of the present invention;

[0033] Figure 4 is a flow chart of an information communication system according to an embodiment of the present invention;

[0034] Figure 5 Flowchart of the audit monitoring system in an embodiment of the present invention; DETAILED DESCRIPTION

[0035] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0036] The present invention provides a vehicle carbon emission data security transmission system based on signal authentication technology, such as Figure 1 Shown, including:

[0037] The data acquisition system is used to read carbon emission-related data from on-board devices and sensors (such as GPS devices, OBD devices, emission sensors, etc.) in real time and store this data in the internal network of the on-board unit for subsequent data transmission;

[0038] The signal authentication system is used to ensure that the vehicle user and the roadside unit (RSU) can verify each other's identity before the vehicle transmits carbon emission data to the RSU. The following steps are followed:

[0039] 1) System deployment: The trusted center (TA) sets the system key and defines the system functions;

[0040] 2) Roadside unit registration: The TA assigns an identity number to the roadside unit RSU, calculates the RSU key group and digest, and sends the information to the roadside unit;

[0041] 3) Vehicle registration: The vehicle submits an identity registration application to the TA. After the TA verifies that the identity is valid, it configures an anti-tampering device TPD for the vehicle user and generates a long-term pseudo identity and password.

[0042] 4) Vehicle authentication request: When a vehicle enters the coverage area of ​​the RSU, it uses the system key in the TPD to generate a short-term pseudo-identity, key group and digest, calculates the vehicle authentication parameters and sends an authentication request to the RSU;

[0043] 5) RSU signal authentication: The RSU receives the vehicle authentication request and uses the system key and encryption algorithm to verify the timestamp and vehicle identity of the vehicle information. If the authentication is successful, the RSU authentication parameters are calculated and passed back to the vehicle.

[0044] 6) Vehicle signal authentication: The vehicle receives the authentication information of the RSU, obtains the key and summary of the corresponding RSU by calling the system function, and then uses the system key and encryption algorithm to verify the timestamp of the RSU information and the RSU identity. After successful authentication, the subsequent secure communication process can be carried out.

[0045] The information communication system is used to achieve secure encrypted communication between the vehicle and the roadside unit after the signal authentication system successfully completes the two-way authentication. The following steps are followed:

[0046] 1) Calculate the same session encryption key on the vehicle user side and the roadside unit side respectively;

[0047] 2) The vehicle user uses the session encryption key to encrypt carbon emission data information;

[0048] 3) The vehicle transmits the encrypted data to the roadside unit through an open wireless channel;

[0049] 4) The roadside unit receives the encrypted information and decrypts the data using the same session encryption key to obtain accurate and complete carbon emission data, and sends the data to the monitoring center through a secure channel.

[0050] The audit monitoring system receives carbon emission data sent by the roadside unit and records the operations of each vehicle user, roadside unit and the behavior log of each system, including access, upload, modification and other operations, to provide a reliable basis for subsequent audit and traceability work.

[0051] The working principle and beneficial effects of the above technical solution are:

[0052] The data acquisition system reads data from vehicle equipment and sensors in real time and stores it within the vehicle-mounted unit's internal network. The signal authentication system utilizes securely stored system keys to generate corresponding identities and key pairs for the vehicle user and the roadside unit, enabling bidirectional identity authentication. The information communication system calculates identical session keys on both the vehicle and roadside unit sides, enabling secure encrypted communication between the vehicle user and the roadside unit. This process ensures secure data transmission from the roadside unit to the monitoring center via a secure channel. The monitoring center records the behavior of each system in an audit monitoring system for subsequent audit and traceability.

[0053] This solution utilizes encryption technology and signal authentication mechanisms to achieve efficient and highly secure identity authentication and encrypted communication between vehicles and roadside units, thereby ensuring the security of vehicle carbon emission data transmitted from the vehicle to the monitoring center and effectively preventing data tampering or leakage.

[0054] The present invention provides a vehicle carbon emission data security transmission system based on signal authentication technology. Figure 2 As shown in Figure 1, the data acquisition system installs data acquisition devices (such as GPS, OBD, and emission sensors) on the vehicle and ensures that these devices are functioning properly and connected to the vehicle's electronic systems. The system reads data from these devices and sensors in real time, including vehicle location, speed, engine speed, fuel consumption, and exhaust emission concentrations. It then integrates and converts this data into a standard digital format, storing it on the vehicle's internal network for transmission.

[0055] The present invention provides a vehicle carbon emission data security transmission system based on signal authentication technology. Figure 3 The specific implementation steps are as follows:

[0056] System deployment phase: TA sets the encryption algorithm p and hash function H, randomly sets S (system public key), and then calculates the corresponding P = p(S). Among them, P is the system private key, and p() represents the algorithm process of calculating the system public key using the system private key. Define the functions Get(RID, PWV) and Update(RID, PWR), where RID represents the identity number ID of the roadside unit RSU, and PWV and PWR represent the passwords corresponding to the vehicle and RSU respectively. The vehicle can call the Get function in the system to query the system public key corresponding to the RSU with the specified RID; the RSU can call the Update function in the system to update the key group by entering the password PWR.

[0057] Roadside unit registration phase: TA assigns a unique identity number RID to each RSU in the entire domain, and registers each roadside unit RSU separately. j Randomly generate password PWR j , randomly select parameter R j , for RSU j Calculate the private key Sr j =f(RID j ,R j ,S), public key Pr j =p(Sr j )=g(y j ), Abstract j =H(RID j ,y j ). Among them, f() represents the algorithm process of calculating the key using the system private key S; g() represents the algorithm process of extracting special parameters from the public key, y represents the minimum parameter group that can determine the composition of the RSU public key; H() represents the algorithm process of calculating the digest that can uniquely identify the RSU using the parameter group y. TA will data {RID j ,PWR j ,Sr j ,Pr j ,Hr j} is stored in the TA local database and the data {RID j ,PWR j ,Sr j ,Pr j ,Hr j ,P} sent to RSU j , stored in RSU j in the local database.

[0058] RSU j Periodically or after a specified number of communication transmissions, call the Update function to update the key: Enter RID j and PWR j, verify whether it is consistent with the identity ID and password stored by TA. If the verification is inconsistent, the RSU's update request is rejected; if the verification is passed, the parameter R is reselected. j , calculate the new public-private key and digest, then update the information in the TA local database and send the updated data to the RSU through a secure channel j , in order to update the RSU's local database.

[0059] Vehicle registration stage: Vehicle i submits its real identity number VID to TA i Register as an applicant. TA checks the validity of the number. If the number is invalid, the vehicle registration request is rejected; if it is valid, the vehicle is equipped with an anti-tampering device TPD and randomly selects the parameter V i , generate password PWV for vehicle i i and long-term pseudo-IDs i =V(VID i ,V i ,S), to hide the real identity of the vehicle. Among them, V() represents the algorithm process of calculating the long-term pseudo identity using the system private key S. TA converts the data {VID i ,ID i ,PWV i} is stored in the TA local database, and {ID i ,PWV i ,S} is stored in TPD, and the corresponding long-term pseudo-identity ID is sent through a secure channel i and password PWV i Sent to vehicle i.

[0060] Vehicle authentication request phase: When vehicle i is on the road and enters the RSU j When the vehicle i is within the coverage range, if it needs to communicate with the RSU, it needs to use TPD to generate a short-term pseudo identity to communicate anonymously with the RSU. i and password PWV i Input into TPD, TPD verifies whether the input parameters are consistent with the stored identity password information. If they are inconsistent, the vehicle's request is rejected; if they are consistent, a parameter v is randomly selected to generate a short-term pseudo identity vid for vehicle i i =VV(ID i ,v,S), calculate the private key Sv i =f(vid i ,S), public key Pv i =p(Sv i )=g(x i ), Abstract Hv i =H(vid i ,x i). Where VV() represents the algorithmic process of TPD using the system private key S to calculate the short-term pseudo-identity; x represents the minimum parameter group that can determine the public key composition of the vehicle's short-term pseudo-identity.

[0061] TPD transmits data to the server through a secure channel. i ,Sv i ,Pv i ,Hv i}Return to vehicle i for storage. Vehicle i randomly selects parameter m and calculates authentication parameter M i =M(m,Sv i ) and generate a timestamp Tv i , then the information {vid i ,Pv i ,Hv i ,M i ,Tv i}Transmit to the roadside unit RSU j Where M() represents an algorithmic process executed using the vehicle private key to calculate the parameter M that can be used for identity authentication.

[0062] RSU signal authentication process: RSU j After receiving the information from vehicle i, first check the timestamp Tv i Whether it is valid, that is, whether the difference between the current time and the time recorded by the timestamp is within the set valid time interval. If the difference is within the valid range, it means that the message is valid and the subsequent verification will continue; if it is not within the valid range, the message is considered invalid and the vid of the message is i Pass it to TA, which uses the system key S to calculate the vehicle's real number VID and trace the source vehicle of the message.

[0063] Calculate the authentication function Av i =A(vid i ,Pv i ,M i ,P), used to authenticate the message. If the authentication fails, the message is deemed invalid and the vid i Pass it to TA, TA uses S to calculate the real number VID of the vehicle to trace the source vehicle of the message; if the authentication is successful, the algorithm is used to obtain the real number VID from M i Extract parameter group x i Where A() is the algorithm process of the authentication function, which returns success only when the vehicle's pseudo-identity and key are correctly calculated and generated using the system key S, otherwise the authentication fails.

[0064] Upon successful certification, RSU j Randomly select parameter n and calculate authentication parameter N j=N(n,Sr j ) and generate a timestamp Tr j , then the information {RID j ,N j ,Tr j} is passed to vehicle i. Where N() represents an algorithm process executed using the RSU system private key to calculate the parameter N that can be used for identity authentication.

[0065] Vehicle signal authentication phase: Vehicle i receives RSU j The information sent first checks the timestamp Tr j Whether it is valid, that is, whether the difference between the current time and the time recorded by the timestamp is within the set valid time interval. If the difference is within the valid range, it means that the message is valid and subsequent verification continues.

[0066] Vehicle i is verifying RID j After the legality is verified, the RID j and vehicle code PWV i Passed as input to the Get function to obtain the RID j The corresponding public key Pr j and Summary HR j . Then, the authentication function Ar is calculated j =A(RID j ,Pr j ,N j ,P), the authentication function will return a successful result only when the RSU number and key are calculated and generated by the system key S. If the authentication is successful, the specific algorithm is used to obtain the RSU number and key from N j Extract parameter group y j .

[0067] The present invention provides a vehicle carbon emission data security transmission system based on signal authentication technology. Figure 4 As shown, after completing vehicle i and RSU j After the two-way identity authentication between the vehicle user end and the roadside unit end, the vehicle user end and the roadside unit end each have their own parameter sets. The vehicle user end parameters include {ID i ,vid i ,PWV i ,Sv i ,Pv i ,Hv i ,M i ,x i ,Tv i ,RID j ,Pr j ,Hr j ,N j ,y j ,Trj}, the roadside unit parameters include {RID j ,PWR j ,Sr j ,Pr j ,Hr j ,N j ,y j ,Tr j ,vid i ,Pv i ,Hv i ,M i ,x i ,Tv i Both parties use these parameters to calculate the same key K = Key (x i ,y j ,Hv i ,Hr j ), enabling secure encrypted communication between vehicle i and roadside unit j. Key() represents the algorithmic process for calculating the session encryption key. After communication is complete, the roadside unit transmits the carbon emissions data to the monitoring center via a secure channel.

[0068] The present invention provides a vehicle carbon emission data security transmission system based on signal authentication technology. Figure 5 As shown, the monitoring center receives and stores emission data from the roadside units, and records in detail the operations of each vehicle and RSU and the behavior logs of each system, including but not limited to access, upload, modification and other operations, to facilitate subsequent auditing and tracing.

[0069] The above scheme offers the following benefits: 1. When a vehicle and a roadside unit (RSU) perform signal authentication, they first verify the validity of the information by checking the timestamps of the communication messages between them. This effectively prevents replay attacks by malicious users, thereby enhancing the security of the data transmission process. 2. Identity authentication is only successful when the identity number (ID) and key group are the system key S. The system key is securely stored in a tamper-proof device (TPD), ensuring that malicious users cannot easily obtain it. Therefore, neither external malicious users nor legitimate vehicles can forge information that can pass authentication, thus ensuring that information is tamper-proof. 3. After completing mutual authentication, the vehicle and RSU calculate the session encryption key using the Key() algorithm. Although the input parameters include the RSU digest, this data is not transmitted over the wireless channel but is securely stored in the vehicle and RSU nodes. This prevents malicious users from obtaining the correct input parameters by attacking the transmission channel and thus from calculating the session encryption key, thus ensuring the confidentiality and integrity of information during transmission. 4. The vehicle uses a combination of long-term and short-term pseudo-identities, generating a new short-term pseudo-identity each time it communicates with a different RSU. At the same time, the roadside unit RSU will update the key regularly (such as every day) or according to the number of communications, which ensures the strong anonymity of the vehicle, prevents the leakage of the vehicle identity, and ensures the security of the data transmission process. 5. When the RSU identifies invalid information with risks, it will immediately pass the vehicle identity of the information to the trusted center TA. TA uses the system key S to calculate the real information of the vehicle, traces the source of the message, and takes measures such as identity revocation and logging, which effectively prevents malicious attacks from the same source and further improves the security of information transmission between the vehicle and the roadside unit. 6. By using the tamper-proof device TPD to store the system key and dynamically generate the vehicle's short-term pseudo-identity and key group during each communication process, it not only reduces the computational burden of TA, but also improves the efficiency of signal authentication.

[0070] Although the general description and specific embodiments of the present invention have been described in detail above, it will be apparent to those skilled in the art that modifications and improvements may be made based on the present invention. Therefore, such modifications and improvements that do not depart from the spirit of the present invention are intended to fall within the scope of protection claimed in the present invention.

Claims

1. A vehicle carbon emission data security transmission system based on signal authentication technology, characterized in that: The system includes data acquisition system, signal authentication system, information communication system, and audit monitoring system; The data acquisition system is a vehicle carbon emission data acquisition system, which is used to read carbon emission related data from vehicle-mounted devices and sensors in real time and store this data in the internal network of the vehicle-mounted unit for subsequent data transmission; The signal authentication system is used to ensure that the vehicle user and the roadside unit (RSU) can verify each other's identity before the vehicle transmits carbon emission data to the RSU. The following steps are followed: 1) System deployment: The trusted center (TA) sets the system key and defines the system functions; 2) Roadside unit registration: The TA assigns an identity number to the roadside unit (RSU), calculates the RSU key group and digest, and sends the information to the roadside unit. 3) Vehicle registration: The vehicle submits an identity registration application to the TA. After the TA verifies the identity is valid, it configures an anti-tampering device TPD for the vehicle user and generates a long-term pseudo-identity and password. 4) Vehicle authentication request: When a vehicle enters the coverage area of ​​the RSU, it uses the system key in the TPD to generate a short-term pseudo-identity, key group and digest, calculates the vehicle authentication parameters and sends an authentication request to the RSU; 5) RSU signal authentication: The RSU receives the vehicle authentication request and uses the system key and encryption algorithm to verify the timestamp and vehicle identity of the vehicle information. If the authentication is successful, the RSU authentication parameters are calculated and passed back to the vehicle. 6) Vehicle signal authentication: The vehicle receives the authentication information from the RSU, obtains the key and digest of the corresponding RSU by calling the system function, and then uses the system key and encryption algorithm to verify the timestamp of the RSU information and the RSU identity. After successful authentication, the subsequent secure communication process can be carried out; The information communication system is used to achieve secure encrypted communication between the vehicle and the roadside unit after the signal authentication system successfully completes the two-way authentication, following the steps below: 1) Calculate the same session encryption key on the vehicle user side and the roadside unit side respectively; 2) The vehicle user uses the session encryption key to encrypt carbon emission data information; 3) The vehicle transmits the encrypted data to the roadside unit through an open wireless channel; 4) The roadside unit receives the encrypted information and decrypts it using the same session encryption key to obtain accurate and complete carbon emissions data, which is then sent to the monitoring center via a secure channel. The audit monitoring system is used to receive carbon emission data sent by roadside units and record the operations of each vehicle user, roadside unit and the behavior log of each system, including access, upload and modification operations, so as to provide a reliable basis for subsequent audit and traceability work.

2. The vehicle carbon emission data secure transmission system based on signal authentication technology according to claim 1 is characterized in that: The signal authentication system ensures that data transmission between TA, TPD, and vehicles, data transmission between TA and RSU, and the calling of system functions are all carried out through secure channels, thereby ensuring that relevant data will not be tampered with or leaked during transmission in public wireless channels.

3. The vehicle carbon emission data secure transmission system based on signal authentication technology according to claim 1 is characterized in that: The signal authentication system has a dynamic update mechanism, which is to call the system function regularly or after a specified number of communication transmissions. Update the identity number, key group and summary of the roadside unit RSU; in the two-way authentication process, the vehicle calls the system function Query the key and digest of the roadside unit.

4. The vehicle carbon emission data secure transmission system based on signal authentication technology according to claim 1 is characterized in that: The signal authentication system uses a system key The vehicle user and the roadside unit's identity, key group and summary are calculated using the encryption algorithm. In the two-way authentication process between the vehicle and the RSU, the rationality of the authentication information timestamp is first verified, and then the authentication function is used to verify the rationality of the authentication information timestamp. and Carry out identity authentication of vehicle and RSU respectively; Among them, and Respectively represent the pseudo identity The vehicle and identification number is The public key of the RSU, and Respectively represent the functions for calculating the vehicle user or RSU authentication parameters using the system private key, is the system public key; only when the identity, key group and digest of the vehicle user or roadside unit are passed through the system key When the encryption algorithm is correctly generated, the result of the authentication function is success.

5. The vehicle carbon emission data secure transmission system based on signal authentication technology according to claim 1 is characterized in that: The information communication system uses a session key calculation function The same session encryption key is calculated at the vehicle user end and the roadside unit end respectively; and They represent the minimum parameter group that can determine the vehicle user and RSU public key composition, and Represents the summary of vehicle users and RSU respectively; where the summary It is obtained through system functions and TA transmission at the vehicle user end and the roadside unit end respectively, and the transmission channels are both secure channels.

Images