Abstract

This paper presents a novel hybrid encryption scheme for scalable video coding based on h.264 standard. In the proposed scheme different domains of video are select to encrypt with different cipher algorithm according to the importance of data. These domains include intra-prediction mode, motion vector and residual data of base layer, and the data of the enhancement layer. LEX (Lead Extraction) algorithm is facilitated to encrypt base layer information. Encryption key of LEX is generated by using chaos cipher technology, the enhancement layer data is scrambled with random permutation algorithm based on chaotic system. Experiment show that our scheme can provide the computational efficiency, and higher security for h.264 SVC.

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