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An Effective Selective Encryption Scheme for H.264 Video based on Chaotic Qi System

Fei Peng, Xiao-wen Zhu and Min Long
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Fei Peng: School of Information Science and Engineering, Hunan University, Changsha, China
Xiao-wen Zhu: School of Information Science and Engineering, Hunan University, Changsha, China
Min Long: College of Computer and Communication Engineering, Changsha University of Science and Technology, Changsha, China

International Journal of Digital Crime and Forensics (IJDCF), 2013, vol. 5, issue 2, 35-49

Abstract: With the wide use of H.264 in Internet and wireless network, many concerns have been made to the security of it. Aiming at providing an effective content protection method for H.264 video, a novel selective encryption scheme based on chaotic Qi system is proposed in this paper. The unpredictability of chaotic system is implemented to construct a pseudo-random number generator based on the 3-dimensional chaotic Qi system, and then some key data such as intra-prediction modes, residual coefficients and MVD are encrypted by the generated key stream. Experimental results and analysis show that the proposed scheme can achieve a good encryption result, a low computational complexity, little impact on compression ratio, and good format compatibility. It has a great potential to be applied in some real-time applications.

Date: 2013
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