文章基本信息

标题：A Reversible Watermarking Scheme Based on Difference Expansion for Wireless Sensor Networks
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作者：Qun Ding ; Baowei Wang ; Xingming Sun 等
期刊名称：International Journal of Grid and Distributed Computing
印刷版ISSN：2005-4262
出版年度：2015
卷号：8
期号：2
页码：143-154
DOI：10.14257/ijgdc.2015.8.2.14
出版社：SERSC
摘要：Wireless sensor networks are self-organized and data-centric. Sensors are typically operated in uncontrolled and possibly hostile environment. Watermark technology has been used for integrity and copyright protection. Some specific application scenarios, such as military, telemedicine and satellite remote sensing, are strict with data integrity and accuracy. They do not allow any change and must be non-destructive data recovery after the requirements of certification. However, previous watermarking-based approaches always make irreversible modifications in the watermarked data. In this paper, we propose a novel reversible watermarking authentication scheme RDE for WSNs, which is based on the difference expansion of a generalized integer transform. Source sensors use a one-way hash function to generate watermark information depending on the adjacent data, and then embed it into these data. After receiving data, the manage node restores the original data and verifies the reliability. The real experiments also demonstrate that our algorithm can losslessly authenticate sensor data with low energy overhead.
关键词：Wireless sensor networks; reversible watermarking; data authentication; ; difference expansion