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Title: Compressed-domain scrambler/descrambler for digital video
Authors: Kankanhalli, M.S. 
Guan, T.T.
Keywords: Conditional access system
Digital video broadcasting
MPEG codec
MPEG encryption
Multimedia data security
Issue Date: 2002
Citation: Kankanhalli, M.S., Guan, T.T. (2002). Compressed-domain scrambler/descrambler for digital video. IEEE Transactions on Consumer Electronics 48 (2) : 356-365. ScholarBank@NUS Repository.
Abstract: Multimedia data security is very important for multimedia commerce on the Interact and real-time video multicast. However, traditional encryption algorithms for data secrecy such as DES may not be suitable for multimedia applications because they are unable to meet the real-time constraints required by the multimedia applications. For multimedia applications, lightweight encryption algorithms are attractive. This paper examines the joint encryption and compression framework in which video data are scrambled in the frequency domain by employing selective bit scrambling, block shuffling and block rotation of the transformed coefficients and motion vectors. In addition a lightweight MPEG video encryption algorithm is proposed whose primary motivation is to save the encryption computation by taking the advantage of combining MPEG compression and data encryption, and at the same time avoids adverse effects on the video compression rate.
Source Title: IEEE Transactions on Consumer Electronics
ISSN: 00983063
DOI: 10.1109/TCE.2002.1010142
Appears in Collections:Staff Publications

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