Symmetric key distribution method and device, vehicle and storage medium

Abstract

The invention discloses a symmetric key distribution method and device, a vehicle and a storage medium. The method comprises the following steps: 1, ; obtaining a mapping relationship between a key ciphertext generated by an Internet of Vehicles server and the controller identifier, acquiring a target identifier of the target controller; obtaining a target key ciphertext corresponding to the target identifier from the mapping relationship, compared with the prior art, the target controller does not need complex operation, the requirement for the operation performance of the target controller is low, extra hardware is not added. Meanwhile, manual password card transmission is avoided, and therefore the symmetric key distribution method is low in complexity, low in cost and high in distribution efficiency.

Description

technical field

[0001] The embodiments of the present invention relate to the field of automobile information security, and in particular, to a symmetric key distribution method, device, vehicle and storage medium. Background technique

[0002] With the development of the automobile industry, the field of Internet of Vehicles has received more and more attention. In the field of Internet of Vehicles, information security design is very important. In information security design, it is very important how to send the key of the controller from the Internet of Vehicles server to the vehicle controller.

[0003] Currently, the keys of the vehicle controller are distributed in the following two ways. Method 1: The Internet of Vehicles server and the vehicle controller use a set of public and private key information respectively. The Internet of Vehicles server uses the public key to encrypt the key of the controller and sends it to the vehicle controller. The vehicle controller ...

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