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Security and Communication Networks
Volume 2017 (2017), Article ID 4167549, 8 pages
Research Article

Efficient Anonymous Authenticated Key Agreement Scheme for Wireless Body Area Networks

1School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China
2School of Computer and Software, Nanjing University of Information Science & Technology, Nanjing 210044, China

Correspondence should be addressed to Ti Zhou

Received 5 September 2017; Accepted 18 October 2017; Published 21 November 2017

Academic Editor: Lianyong Qi

Copyright © 2017 Tong Li et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Wireless body area networks (WBANs) are widely used in telemedicine, which can be utilized for real-time patients monitoring and home health-care. The sensor nodes in WBANs collect the client’s physiological data and transmit it to the medical center. However, the clients’ personal information is sensitive and there are many security threats in the extra-body communication. Therefore, the security and privacy of client’s physiological data need to be ensured. Many authentication protocols for WBANs have been proposed in recent years. However, the existing protocols fail to consider the key update phase. In this paper, we propose an efficient authenticated key agreement scheme for WBANs and add the key update phase to enhance the security of the proposed scheme. In addition, session keys are generated during the registration phase and kept secretly, thus reducing computation cost in the authentication phase. The performance analysis demonstrates that our scheme is more efficient than the currently popular related schemes.