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

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) and Min Long (College of Computer and Communication Engineering, Changsha University of Science and Technology, Changsha, China)

Source Title: International Journal of Digital Crime and Forensics (IJDCF) 5(2)

DOI: 10.4018/jdcf.2013040103

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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.

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Encryption is a basic mean for the protection of the content of video data. The existed methods can be classified into the following two categories according to the range of the content to be encrypted:

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

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

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