Layered Multicast Encryption of Motion JPEG2000 Code Streams for Flexible Access Control

Takayuki NAKACHI  Kan TOYOSHIMA  Yoshihide TONOMURA  Tatsuya FUJII  

IEICE TRANSACTIONS on Information and Systems   Vol.E95-D   No.5   pp.1301-1312
Publication Date: 2012/05/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.E95.D.1301
Print ISSN: 0916-8532
Type of Manuscript: Special Section PAPER (Special Section on Recent Advances in Multimedia Signal Processing Techniques and Applications)
Category: Video Processing
layered multicast,  broadcast encryption,  Motion JPEG2000,  

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In this paper, we propose a layered multicast encryption scheme that provides flexible access control to motion JPEG2000 code streams. JPEG2000 generates layered code streams and offers flexible scalability in characteristics such as resolution and SNR. The layered multicast encryption proposal allows a sender to multicast the encrypted JPEG2000 code streams such that only designated groups of users can decrypt the layered code streams. While keeping the layering functionality, the proposed method offers useful properties such as 1) video quality control using only one private key, 2) guaranteed security, and 3) low computational complexity comparable to conventional non-layered encryption. Simulation results show the usefulness of the proposed method.