Secure communication method for vehicle-mounted TBOX and cloud server

Abstract

The invention discloses a safety communication method for a vehicle-mounted TBOX and a cloud server. The method comprises the following steps: a vehicle-mounted TBOX performs communication authentication with a cloud server, and acquires an RSA public key 2 from a CA certificate sent back by the cloud server; the vehicle-mounted TBOX negotiates with the cloud server to generate an AES key; the vehicle-mounted TBOX encrypts the plaintext message by using the AES key, and sends the encrypted message to the cloud server; meanwhile, the AES secret key is encrypted through an RSA public key 2, andthe encrypted AES secret key is sent to the cloud server; and the cloud server decrypts the received encrypted AES key by using the RSA private key 2 to obtain an AES key, and decrypts the received encrypted message by using the AES key to obtain a plaintext message. According to the invention, the AES secret key is generated through communication authentication and negotiation, the plaintext message is encrypted by using the AES secret key, and the encrypted AES secret key is sent, so that the safety of data transmission is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of Internet of Vehicles, and in particular relates to a safe communication method between a vehicle-mounted TBOX and a cloud server. Background technique [0002] The concept of Internet of Vehicles is derived from the Internet of Things. According to the definition of the China Internet of Things School-Enterprise Alliance, the Internet of Vehicles is a huge interactive network composed of information such as vehicle location, speed, and route. The vehicle can complete the collection of its own environment and state information through GPS, RFID, sensors, camera image processing and other devices. Through Internet technology, all vehicles can transmit various information of themselves to the central processing unit. Process and analyze the information of a large number of vehicles through computer technology, so as to calculate the best routes for different vehicles and report road conditions in time. ...

AI Technical Summary

Problems solved by technology

The existing technology generally puts the effective information in the communication directly on the TCP / IP layer for transmission, and does not encrypt the data; or adopts a single fixed encryption algorithm, and the key is not updated during the entire life cycle of the TBOX. This encrypted transmission It is difficult to guarantee the security of transmitted data

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