Secret Data Hiding in Encrypted Compressed Video Bit Streams for Privacy Info Protection

Pradeep Rajagopalan¹

¹Easwari Engineering College, Anna University, Chennai, Tamilnadu, India

Abstract

This paper presents the encryption of compressed video bit streams and hiding privacy information to protect videos during transmission or cloud storage. Digital video sometimes needs to be stored and processed in an encrypted format to maintain security and privacy. Here, data hiding directly in the encrypted version of H.264/AVC video stream is approached, which includes the following three parts. By analyzing the property of H.264/AVC codec, the code words of intra prediction modes, the code words of motion vector differences, and the code words of residual coefficients are encrypted with stream ciphers. Then, a data hider may embed additional data in the encrypted domain by using wrapping technique, without knowing the original video content. The paper results shows that used methods provides better performance inerms of computation efficiency, high data security and video quality after decryption. The parameters such as RMSE, PSNR, CC are evaluated to measure its efficiency.

Keywords

• H.264 Compression, chaos encryption, Bit wrapping based data hiding

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Cite this Article as Follows

Pradeep Rajagopalan. Secret Data Hiding in Encrypted Compressed Video Bit Streams for Privacy Info Protection. International Conference on Innovative trends in Electronics Communication and Applications 2014. Vol. 1. Chennai: Association of Scientists, Developers and Faculties, 2014. 281-285. Print.