Key management method, device and system

Abstract

The present invention discloses a key management method, device and system. The method includes the following steps that: an activation message sent by a vehicle-mounted terminal is received; a first key corresponding to a first key identifier in the activation message is obtained, a first encrypted message authentication code in the activation message is decrypted through the first key; after the decrypted message authentication code is successfully verified, a second key is generated, and the second key is associated with the first key identifier; a vehicle-mounted terminal identifier in the activation message is obtained, and the association relations of the vehicle-mounted terminal identifier, the second key and the first key are saved; and an activation completion message carrying the second key is sent to the vehicle-mounted terminal. According to the method, key update is realized during a key activation process, a possibility of key leakage in a period from a time point when an initial key is generated to a time point when the initial key is injected into a vehicle-mounted terminal due to poor management can be eliminated, hazards caused by the leakage of the initial key can be decreased, and the security of the transmission of the Internet of Vehicles can be improved.

Description

technical field [0001] The present invention relates to the field of computer technology, in particular to a key management method, device and system. Background technique [0002] With the development of electronic technology, the functions of vehicle-mounted terminals are becoming more and more perfect. During the process of using the vehicle, the vehicle-mounted terminal can be used to access the Internet and obtain the required information from the Internet. Get the navigation route in , and drive according to the navigation route. [0003] In order to ensure the transmission security requirements of the Internet of Vehicles, in related technologies, the server provides a unique key for each vehicle-mounted terminal, and when the vehicle-mounted terminal activates the key, if the key in the vehicle-mounted terminal is monitored and stored in the server When the keys of the vehicle-mounted terminal match, the activation of the vehicle-mounted terminal is completed, and, ...

AI Technical Summary

Problems solved by technology

However, in the process of communication between the vehicle-mounted terminal and the server, the key is fixed, and the key is easily cracked by illegal personnel. There are certain security risks in the data transmission between the vehicle-mounted terminal and the server.

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