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Journal of Sensors
Volume 2016, Article ID 9297562, 7 pages
http://dx.doi.org/10.1155/2016/9297562
Research Article

Study of Wireless Authentication Center with Mixed Encryption in WSN

School of Electronic and Information Engineering, South China University of Technology, Guangzhou 510000, China

Received 25 March 2016; Accepted 29 May 2016

Academic Editor: Iftikhar Ahmad

Copyright © 2016 Yiqin Lu 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.

Abstract

WSN (wireless sensor network) has been used in a wide range of applications nowadays. Sensor networks may often relay critical data; thus, security must be a high priority. However, due to their limited computational, energy, and storage resources, sensor nodes are vulnerable to attack. So how to protect sensor nodes from attacks without raising computational capability and energy consumption is a worthwhile issue. A WAC (wireless authentication center) with mixed encryption named “MEWAC” is proposed. MEWAC is based on MCU (Microcontroller Unit) and WiFi (Wireless Fidelity) module and uses RSA, AES (Advanced Encryption Standard), and SHA-1 (Secure Hash Algorithm 1) to provide high performance authentication and data encryption services for sensor nodes. The experimental results show that MEWAC has the advantages of low cost, low power consumption, good performance, and stability; moreover, the authentication protocol improves the security of WSN and reduces the overhead in node authentication.