Method for detecting Sybil attack in underwater wireless sensor networks

Abstract

The invention relates to a method for detecting Sybil attack in underwater wireless sensor networks. The method includes three steps: by the aid of anchor nodes, (1) identifying suspicious nodes: identifying the suspicious nodes in the networks according to received information packets; (2) determining Sybil nodes: calculating state evaluation values of the suspicious nodes and determining the Sybil nodes by means of comparing with position information of the suspicious nodes; (3) separating the Sybil nodes: reporting the Sybil nodes to base stations which delete the Sybil nodes from the networks. The method has the advantages that hostile Sybil attack can be effectively detected, safety of the networks can be guaranteed, and hardware conditions for the nodes neither are limited strictly nor limited by specific information or specific nodes and have good expansibility.

Description

technical field [0001] The invention belongs to the field of underwater sensor network communication security, in particular to a method for detecting witch node intrusion in an underwater sensor network. Background technique [0002] Underwater Wireless Sensor Networks (UWSNs for short) is proposed for applications in underwater environments. UWSNs are composed of a large number of underwater sensor nodes and form a distributed self-organizing wireless communication network through underwater acoustic wireless communication. The underwater sensor nodes cooperatively monitor and collect data information, and after fusion processing, transmit it to the surface base station, and then transmit it to the user through radio frequency communication or wired communication. Due to the characteristics of distributed and low cost, UWSNs can provide better technical support and information platforms for the promotion of marine environment management, resource protection, disaster moni...

AI Technical Summary

Problems solved by technology

[0004] (1) Limitation of node hardware resources

The hardware conditions of the sensor node itself are limited, such as storage space, computing power, etc. At the same time, the sensor node is deployed underwater and cannot use existing energy sources to supplement energy, and underwater acoustic communication has higher transmission power than electromagnetic wave communication, and consumes more energy;

[0005] (2) Safety issues of underwater nodes

This method can effectively detect witch nodes, but the disadvantage is that the energy overhead is large and the network life is shortened

[0015] (1) Inter-node key technology, distributed hash table identity registration technology, node location confirmation technology, trusted code certification technology, etc., have a large cost in terms of storage resources and energy, and low timeliness is not conducive to resource constraints sensor network;

[0016] (2) Supporting hardware conditions such as omnidirectional antennas and signal receivers with high clock accuracy are required, which greatly increases the cost of the network and the complexity of implementation

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