Traffic sensor network data transmission method, system and medium based on hybrid encryption

Abstract

The invention discloses a traffic sensor network data transmission method and system based on hybrid encryption, which performs end-to-end data transmission between intelligent vehicle terminals, intelligent road test equipment, and cloud platforms, and uses the intelligent traffic lightweight key carried by the server Digital certificates are used for two-way authentication; during data transmission, the data is double-encrypted using a hybrid encrypted transmission method, and at the same time, a random key and a random plaintext calculation hash value are added for comparison and verification. The present invention combines the advantages of fast encryption and decryption speed of the SM4 symmetric encryption algorithm and low encryption key management difficulty and high security of the SM2 asymmetric encryption algorithm to ensure that the method can be applied to the communication process of intelligent vehicle terminals, intelligent road test equipment and cloud platforms Among them, it can effectively improve the security and transmission efficiency of traffic sensor network data transmission.

Description

technical field

[0001] The invention relates to the technical field of vehicle networking security, in particular to a traffic sensor network data transmission method, system and medium based on hybrid encryption. Background technique

[0002] With the development of intelligence and networking in the automobile industry, all elements of transportation will be exposed to various network environments. The acquisition and collection of various basic information data of intelligent transportation needs to rely on the devices installed in running vehicles and road test facilities. information node. These nodes face various threats such as information leakage, data tampering, replay attacks, and denial of service. Not only are information vulnerable to air interception, eavesdropping, or tampering, but nodes are also vulnerable to physical manipulation by attackers to obtain information stored in nodes. , and then pose a threat to the entire intelligent transportation network. ...

Examples

Embodiment 1

[0070] The invention provides a traffic sensor network data transmission method based on hybrid encryption. Based on the hybrid encryption algorithm obtained by the symmetric encryption algorithm SM4 and the asymmetric encryption algorithm SM2, end-to-end data transmission is performed between the client and the server.

[0071] combine figure 1 , the specific steps of the data transmission method of the present invention are as follows:

[0072] Step 1. Perform two-way authentication on the client and the server based on the intelligent transportation lightweight key digital certificate carried by the server, and establish a communication channel between the client and the server after the authentication is passed.

[0073] Step 2. The client randomly generates the SM2 key pair, and encrypts the SM2 key pair to the server through the key digital certificate.

[0074] Step 3. The client and the server are respectively the sender and the receiver. The sender randomly generate...

Embodiment 2

[0140] A traffic sensor network data transmission system based on hybrid encryption of the present invention includes an authentication unit, a generation unit, a sending unit, a receiving unit, an encryption unit, a decryption unit and a hash function unit. in:

[0141] The authentication unit is used for two-way authentication between the client and the server. The two-way authentication is based on the intelligent traffic lightweight key digital certificate carried by the server. After the verification is passed, a communication channel is established between the client and the server for end-to-end data transmission.

[0142] The generation unit is used to generate random SM2 key pair, SM4 key Key and random plaintext Data.

[0143] The sending unit is used to send the SM2 key pair to the server through the key digital certificate.

[0144] The receiving unit is used to receive the SM2 key pair in the key digital certificate in communication.

[0145] The encryption uni...

technical field

[0001] The invention relates to the technical field of vehicle networking security, in particular to a traffic sensor network data transmission method, system and medium based on hybrid encryption. Background technique

[0002] With the development of intelligence and networking in the automobile industry, all elements of transportation will be exposed to various network environments. The acquisition and collection of various basic information data of intelligent transportation needs to rely on the devices installed in running vehicles and road test facilities. information node. These nodes face various threats such as information leakage, data tampering, replay attacks, and denial of service. Not only are information vulnerable to air interception, eavesdropping, or tampering, but nodes are also vulnerable to physical manipulation by attackers to obtain information stored in nodes. , and then pose a threat to the entire intelligent transportation network. ...

Examples

Embodiment 1

[0070] The invention provides a traffic sensor network data transmission method based on hybrid encryption. Based on the hybrid encryption algorithm obtained by the symmetric encryption algorithm SM4 and the asymmetric encryption algorithm SM2, end-to-end data transmission is performed between the client and the server.

[0071] combine figure 1 , the specific steps of the data transmission method of the present invention are as follows:

[0072] Step 1. Perform two-way authentication on the client and the server based on the intelligent transportation lightweight key digital certificate carried by the server, and establish a communication channel between the client and the server after the authentication is passed.

[0073] Step 2. The client randomly generates the SM2 key pair, and encrypts the SM2 key pair to the server through the key digital certificate.

[0074] Step 3. The client and the server are respectively the sender and the receiver. The sender randomly generate...

Embodiment 2

[0140] A traffic sensor network data transmission system based on hybrid encryption of the present invention includes an authentication unit, a generation unit, a sending unit, a receiving unit, an encryption unit, a decryption unit and a hash function unit. in:

[0141] The authentication unit is used for two-way authentication between the client and the server. The two-way authentication is based on the intelligent traffic lightweight key digital certificate carried by the server. After the verification is passed, a communication channel is established between the client and the server for end-to-end data transmission.

[0142] The generation unit is used to generate random SM2 key pair, SM4 key Key and random plaintext Data.

[0143] The sending unit is used to send the SM2 key pair to the server through the key digital certificate.

[0144] The receiving unit is used to receive the SM2 key pair in the key digital certificate in communication.

[0145] The encryption uni...

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