Safe positioning method in wireless sensor network

Abstract

The invention belongs to the technical field of computer network security, relating to a safe positioning method in a wireless sensor network. The traditional positioning methods do not consider the security problems sufficiently, and the invention provides the positioning method based on a signcryption mechanism so as to ensure confidentiality of position information and integrity of the position information in the transmission process. The method comprises the following steps of: carrying out signcryption and broadcasting on the position information by a beacon node; carrying out unsigncryption and authentification on the received position information by an unknown node; calculating a self-position by the unknown node; and updating the self-position by the node. Compared with the prior art, the invention effectively protects the position information in the positioning process, completely considers the characteristic of limited energy of a wireless sensor node, and minimizes the communication cost and calculating cost of the node in the positioning method. The invention has flexible positioning and updating mechanism, and executors can adjust according to the specific circumstances of the network so as to achieve the satisfied positioning convergence time.

Description

technical field [0001] The invention relates to a secure positioning method in a wireless sensor network, in particular to a secure positioning method in a wireless sensor network based on an elliptic curve signcryption scheme, which can be used for position calculation of unknown nodes in a wireless sensor network, and belongs to network information security area. Background technique [0002] Wireless sensor networks are mainly used to perceive, fuse and transmit various types of data, such as temperature, humidity, pressure, speed, etc. The collected data often have practical significance together with the corresponding location information. Therefore, wireless sensor network node location technology has become one of the key technologies to realize the application of sensors in many aspects. [0003] In wireless sensor networks, most of the existing positioning methods for wireless sensor nodes do not consider security issues. The location information of sensor nodes is...

AI Technical Summary

Problems solved by technology

The positioning methods currently proposed have the following main defects: the positioning method based on distance measurement has high requirements on the hardware of network equipment, for example, the method based on the angle of arrival requires array antennas and other equipment, and the measurement method based on signal strength is affected by the environment more obvious

At present, there are also some security positioning methods, most of which are too cumbersome, and the communication process of security measures consumes a lot of network resources, which increases the delay of the positioning process, making the positioning performance of wireless sensor nodes not ideal.

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