Abstract

From years ago, encryption became a necessity to transmit data securely. Like message written, fixed images or movies should be encrypted also while transmitted over a public channel. Currently, the literature is pointed to selective encryption for those types of data against attacks. That's to say, the encryption module is inserted into the chain of video compression to reduce the computational time, ensure the security and the reduction of the amount of video data. This paper presents one method of selective encryption based on chaos for H.264/AVC video compression. It consists of the insertion of the encryption part in the entropy coding module (CAVLC: Context Adaptive Variable Length Coding). The results will be deducted according to the values of PSNR (Peak Signal to Noise Ratio), SSIM (Structural SIMilarity) and the rate of encryption. Selective Encryption CAVLC (SE-CAVLC) is interesting since it consider both Intra and Inter frame.

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