WSN group key management method suitable for multicast communication

Abstract

The invention relates to a WSN group key management method suitable for multicast communication, and belongs to the field of network security and communication, and the method comprises the followingsteps: S1, initializing system parameters; S2, enabling the two communication parties to mutually authenticate identities; S3, constructing space coordinates of the shared matrix M; s4, enabling the two communication parties to establish a group key; and s5: updating the group key. According to the method, on the basis of reducing the storage overhead of each node, the establishment of the group key and the updating of the group key are completed, and the key space of the group key is increased compared with the same type of group key management scheme. Meanwhile, the method ensures the forward security and backward security in the whole network operation process, that is, only legal nodes can update the group key, and nodes cannot be removed to obtain the updated group key.

Description

technical field [0001] The invention belongs to the field of network security and communication, and relates to a WSN group key management method suitable for multicast communication. Background technique [0002] The wireless sensor network is composed of a large number of wireless sensor nodes deployed to the monitoring area, mainly for sensing and collecting information. At present, wireless sensor networks have been widely used in military monitoring, environmental monitoring, medical applications, intelligent transportation, robot control, remote control of dangerous areas and other fields. In WSN, unicast communication is mostly used for communication security considerations, but in some special cases, multicast communication is used in some cases to improve communication efficiency. Due to the problems of replay attack, forgery attack and message hijacking in multicast communication, the multicast security problem of WSN has become one of the key issues restricting t...

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Problems solved by technology

[0003] Although the current research results of wireless sensor network group key management schemes have been applied to some multicast communications, they have not fully considered the dynamic changes of wireless sensor networks, which makes the whole scheme lack of group key update mechanism; Although there is a group key update mechanism in the key management scheme, it does not realize the mutual authentication between the network access node and the cluster head node, nor does it realize the legitimacy authentication of the key update command issued by the cluster head by the group member nodes. Therefore, there are certain security risks in the group key management mechanism.

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