Communication key generation method and device, equipment and storage medium

Abstract

The embodiment of the invention provides a communication key generation method and device, equipment and a storage medium, and the method comprises the steps: obtaining a first physical address of authentication equipment and a second physical address of the authenticated equipment after determining that the authenticated equipment is bridged with the authentication equipment; selecting a first key element and a second key element from a pre-acquired key element table according to the first physical address and the second physical address, and generating a unicast key used between the authentication equipment and the authenticated equipment based on the first key element and the second key element; and selecting a third key element from the key element table according to the first physicaladdress, and generating a multicast key used between the authentication equipment and the authenticated equipment based on the third key element. By adopting the invention, the communication key negotiation process is simplified, and the complexity of the communication key negotiation process is reduced.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a method, device, device and storage medium for generating a communication key. Background technique [0002] Such as figure 1 In the public transportation network communication scenario shown, the vehicle access point (Access Point, AP) is arranged on the high-speed train, and the track AP is arranged along the track. In order to ensure the normal operation of the train automatic control system and passenger information system and To allow passengers to access the Internet, a bridge between the vehicle AP and the rail AP is required. After the vehicle-mounted AP is bridged to the orbital AP, it needs to negotiate a communication key with the orbital AP, which will be used for encryption and decryption when transmitting data between the vehicle-mounted AP and the orbital AP. [0003] A scheme for negotiating a communication key is proposed in the related art. A fo...

AI Technical Summary

Problems solved by technology

In related technologies, a four-way handshake is required to negotiate a communication key. The negotiation process takes a lot of time and is prone to negotiation failures, thereby reducing communication efficiency.

Images