Secure Data Collection in Wireless Multimedia Sensor Networks

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Saeidi, Maryam | 2013

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 45537 (19)
University: Sharif University of Technology
Department: Computer Engineering
Advisor(s): Hemmatyar, Mohammad Afshin
Abstract:
Wireless Multimedia Sensor Networks (WMSNs) have many applications in survilient systems. In this kind of applications, although we have limited energy and computational power, we should provide minimal security to transfer data in such networks. These constraints are more crucial when we use multimedia that has more data for processing and transmission. Because of this huge amount of data, we must use compression for using less energy in both processing and transmission.
In some algorithms, it has been proposed to integrate compression and encryption in order to decrease time and power consumption. The proposed algorithm is several times faster than AES (Advanced Encryption Standard) or any known stream cipher. But when we want to use that algorithm in wireless environments, it is important to consider the reliability of the algorithm to environmental noise. In this thesis we proposed an extra parameter, to ensure that the error propagation is limited. As we can see in the results, with decreasing the image compression ratio at most 10%, the quality would be 50% more than similar previous works.
Keywords:
Wireless Multimedia Sesnsor Network (WMSN) ; Compression ; Cryptography ; Huffman Table

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