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Journal of Sensors
Volume 2016, Article ID 1321079, 11 pages
Research Article

An Energy-Efficient Secure Scheme in Wireless Sensor Networks

1School of Information and Communication Engineering, Chungbuk National University, 1 Chungdaero, Seowon-gu, Cheongju 362-763, Republic of Korea
2LOTTE Engineering & Construction IS Team, LOTTE Data Communication Co., Saerom B/D, No. 18-1, Jamwon-dong, Seocho-gu, Seoul 137-903, Republic of Korea
3Agency for Defense Development, Bugyuseong-daero 488, Yuseong, Daejeon 305-600, Republic of Korea

Received 18 November 2015; Revised 28 April 2016; Accepted 10 May 2016

Academic Editor: Hana Vaisocherova

Copyright © 2016 Kyoungsoo Bok 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.


We propose an energy-efficient security scheme in wireless sensor networks. The proposed scheme converts sensing data using TinyMD5, which is a variation of MD5, a one-way hash function, and can solve the collision problem of hash value that occurs when MD5 is modified. In addition, it strengthens security capabilities by transmitting data through multiple paths after conversion with TinyMD5 and divides the data to make decryption of the original data difficult. To show the superiority of the proposed algorithm, we compare it with the existing schemes through simulations. The performance evaluation results show that the proposed scheme maintains security better than the existing scheme, improving the communication cost and the network lifetime.