International Journal on Advanced Science, Engineering and Information Technology, Vol. 2 (2012) No. 1, pages: 85-89, DOI:10.18517/ijaseit.2.1.160

Video Encryption Based on Chaotic Systems in the Compression Domain

Abstract

With the development of the internet and multimedia technology digital video encryption has attracted a great deal of research interest in the recent few years in applications. In this paper, we propose a method to encrypt video data. The proposed algorithm is based on the MPEG video coding standard. It selectively encrypts some DCT coefficients in the I frame, B frame and P frame in MPEG video compression by using chaotic systems. The key in this paper is chaotic sequence based on logistic mapping. It can produce the pseudo-random sequences with good randomness. The experimental results based on chaotic maps prove the effectiveness of the proposed method, showing advantages of large key space and high-level security. The proposed algorithm was measured through a series of tests and achieved good results. The results indicate that the algorithm can be implemented for video encryption efficiently and it provides considerable levels of security.

Keywords:

MPEG video Compression; video encryption; chaotic systems

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