ROBUST DATA HIDING AND SECURE KEY GENERATION IN H.264 COMPRESSED VIDEOS release_lueqcu56izbzraivfti26yyqte

by Sruthi M S, Jobin Jose

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Abstract

For providing privacy and security digital video want to be processed and stored in encrypted domain. It is necessary to perform data hiding in these encrypted videos for the purpose of content notation and/or tampering detection. In this way, data hiding in encrypted domain without decryption preserves the confidentiality of the content. The process involves video encryption, data embedding, and data extraction. By analyzing the property of H.264, the DCT coefficients and the motion vector differences are encrypted with stream ciphers. LFSR based stream cipher produce pseudo random strings which improve security of video transmission. Selective data hiding is utilized in the method to determine frames with less number of motion vectors which are suitable for data hiding. Furthermore this Paper introduce the system with more secure and better quality videos even after decryption. This proposed method is tested by using two parameters such as structural similarity (SSIM) and Peak signal to noise ratio (PSNR) value.
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