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Proceedings Paper

Lightweight MPEG4 video encryption algorithm suitable for network transmission
Author(s): Shiguo Lian; Yingjun Cao; Jinsheng Sun; Zhiquan Wang
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Paper Abstract

In this paper, a video encryption algorithm based on MPEG4 codec is proposed, which combines encryption process with MPEG4 compression process. This algorithm is composed of two parts: VOP (Video Object Plane) encryption and VOL (Video Object Layer) encryption. In VOP encryption, the intra-encoded VOP is encrypted by inter-block permutation, the intra-encoded code blocks are encrypted by bit-plane permutation and coefficient sign encryption, and the other code blocks are encrypted by motion vector encryption. In VOL encryption, the basic VOLs are encrypted while others left unchanged. It can obtain high speed, for only parts of VOLs are encrypted. And it supports direct bit-rate control, which means that the encrypted images can also be decrypted correctly after recompression or bit-rate conversion. What's more, it is more robust to transmission errors than traditional ciphers since the errors causing in the encrypted bit-stream cannot spread out. These properties make it suitable for secure multimedia transmission over network, such as Video-on-Demand systems, multimedia communication networks, mobile multimedia or wireless multimedia networks, and so on.

Paper Details

Date Published: 25 October 2004
PDF: 10 pages
Proc. SPIE 5600, Multimedia Systems and Applications VII, (25 October 2004); doi: 10.1117/12.570742
Show Author Affiliations
Shiguo Lian, Nanjing Univ. of Science and Technology (China)
Yingjun Cao, Duke Univ. (United States)
Jinsheng Sun, Nanjing Univ. of Science and Technology (China)
Zhiquan Wang, Nanjing Univ. of Science and Technology (China)

Published in SPIE Proceedings Vol. 5600:
Multimedia Systems and Applications VII
Chang Wen Chen; C.-C. Jay Kuo; Anthony Vetro, Editor(s)

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