Romanian Journal of Information Science and Technology (ROMJIST)

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ROMJIST is a publication of Romanian Academy,
Section for Information Science and Technology

Editor – in – Chief:

Academician Dan Dascalu

Secretariate (office):
Adriana Apostol
Adress for correspondence: romjist@nano-link.net (after 1st of January, 2019)

Editing of the printed version: Mihaela Marian (Publishing House of the Romanian Academy, Bucharest)

Technical editor
of the on-line version:
Lucian Milea (University POLITEHNICA of Bucharest)

Sponsors:
• National Institute for R & D
in Microtechnologies
(IMT Bucharest), www.imt.ro
• Association for Generic
and Industrial Technologies (ASTEGI), www.astegi.ro

ROMJIST Volume 24, No. 84, 2021, pp. 37-57, Paper no. 679/2021
 

Leqiang BAI, Jizhe YU, Keyan CAO
Sink Location Privacy Protection Algorithm Based on Virtual Circle in WSNs

ABSTRACT: For the protection of sink location privacy in WSNs, sink location privacy protection algorithm based on virtual circle is put forward. A virtual circle is constructed with the sink as the center, and mathematical models are established according to the location of the source node to determine the expected phantom source node, which provides direction for selecting the first stage phantom source node. Taking the first stage phantom source node as the starting point, a second stage one is randomly selected on the circle in a clockwise direction. The selection of the two phantom source nodes provides the diversity of packet transmission path. At the same time, the two phantom source nodes can inject fake packets. The first one transmits fake packets to some random destinations and some fake sinks set in the network, inducing an adversary to trace away from the sink. The second one transmits fake packets along the circle to some random destinations in the network, which further increases the difficulty for an adversary to capture the sink and achieves the purpose of protecting sink location privacy. The analysis of setting to deploy fake sinks shows that the location of the fake sinks satisfies randomicity and dispersity, by randomly selecting the angle on the external region of the virtual circle and using the normal distribution mathematical model to determine the distance between the fake sink and the sink. The simulation results show that the algorithm can effectively induce adversaries to deviate from the real path and improve the safe time.

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