A Hybrid Trust Management Framework for Wireless Sensor and Actuator Networks in Cyber-Physical Systems

Ruidong LI  Jie LI  Hitoshi ASAEDA  

IEICE TRANSACTIONS on Information and Systems   Vol.E97-D   No.10   pp.2586-2596
Publication Date: 2014/10/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.2013THP0010
Type of Manuscript: INVITED PAPER (Special Section on Frontiers of Internet of Things)
cyber-physical systems,  wireless sensor actuator network,  trust management framework,  security,  

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To secure a wireless sensor and actuator network (WSAN) in cyber-physical systems, trust management framework copes with misbehavior problem of nodes and stimulate nodes to cooperate with each other. The existing trust management frameworks can be classified into reputation-based framework and trust establishment framework. There, however, are still many problems with these existing trust management frameworks, which remain unsolved, such as frangibility under possible attacks. To design a robust trust management framework, we identify the attacks to the existing frameworks, present the countermeasures to them, and propose a hybrid trust management framework (HTMF) to construct trust environment for WSANs in the paper. HTMF includes second-hand information and confidence value into trustworthiness evaluation and integrates the countermeasures into the trust formation. We preform extensive performance evaluations, which show that the proposed HTMF is more robust and reliable than the existing frameworks.