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Partial encryption of video for communication and storage
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index.pdf
Date
2003
Author
Yüksel, Turan
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In this study, a new method is proposed to protect video data through partial encryption. Unlike previous methods, the bit rate of the encrypted portion can be controlled. In order to accomplish this task, a simple model for the time to break the partial encryption by a chipertext-only attack is defined. Then, the encrypted bit budget distribution strategy maximizing the time subject to the bitrate constraint is found. An algorithm to estimate the model parameters is constructed and it isthen implemented over an MPEG-4 natural video codec together with the bit budget distribution strategy. The encoder is tested with various image sequences and the output is analyzed. In addition to the developed video encryption method, a file format is defined to store encryption related side information.
Subject Keywords
Computer science
,
Video encryption
,
MPEG-4
,
IPMP
URI
http://etd.lib.metu.edu.tr/upload/1097963/index.pdf
https://hdl.handle.net/11511/13352
Collections
Graduate School of Natural and Applied Sciences, Thesis
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T. Yüksel, “Partial encryption of video for communication and storage,” M.S. - Master of Science, Middle East Technical University, 2003.
