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Video encryption is suitable for video protection. A video encryption scheme combining an encryption process with the MPEG2 encoding process is presented. It encrypts I-frames with color plane confusion, coefficient confusion and sign encryption, encrypts the intra-macroblocks in P/B-frames with coefficient confusion and sign encryption, and encrypts the inter-macroblocks with motion vector encryption. Theoretical analysis and experimental results show that the scheme is secure, of low cost, supports direct bit-rate control and is more robust to transmission errors. These properties make it suitable for multimedia applications with real-time operation and a direct bit-rate control requirement, such as video conference, multimedia network, wireless or mobile multimedia, and so on.
Communications, Circuits and Systems, 2004. ICCCAS 2004. 2004 International Conference on (Volume:1 )
Date of Conference: 27-29 June 2004