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  1. Proceedings of the 5th ACM workshop on Digital rights management (DRM '05)
  2. New broadcast encryption scheme using tree-based circle
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Fairer usage contracts for DRM
DRM interoperability analysis from the perspective of a layered framework
New broadcast encryption scheme using tree-based circle
Towards multilateral secure digital rights distribution infrastructures
Towards a software architecture for DRM
Watermarking and ownership problem: a revisit
DRMs, fair use and users' experience of sharing music
Achieving media portability through local content translation and end-to-end rights management
Authorization for digital rights management in the geospatial domain
Hybrid static-dynamic attacks against software protection mechanisms
Improved watermark detection for spread-spectrum based watermarking using independent component analysis
Control flow based obfuscation
Statistical audio watermarking algorithm based on perceptual analysis

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New broadcast encryption scheme using tree-based circle

Content Provider ACM Digital Library
Author Jho, Nam-Su Yoo, Eun Sun Cheon, Jung Hee Kim, Myung-Hwan
Abstract Since broadcast encryption was first introduced in 1993 by Fiat and Naor, many broadcast encryption schemes have been developed. Among these, schemes based on tree structure and linear structure are notable. The subset difference (SD) scheme and layered subset difference (LSD) scheme based on tree structure have small user-key size and small transmission overhead when the number r of revoked users is very small. The punctured interval (PI) scheme based on linear (or circular) structure has better transmission overhead when r is not too small.In this paper, we propose a new broadcast encryption scheme, called the tree-based circle (TC) scheme, combining tree structure and circular structure. In this scheme, the transmission overhead is proportional to r like in the SD scheme for small r and becomes asymptotically same as that of the PI scheme when r grows, keeping the computation cost and the storage size small. The TC scheme also inherits the flexibility of the PI scheme. We further improve the transmission overhead of the TC scheme, when r is very small, by adopting the notion of cascade arc.
Starting Page 37
Ending Page 44
Page Count 8
File Format PDF
ISBN 1595932305
DOI 10.1145/1102546.1102554
Language English
Publisher Association for Computing Machinery (ACM)
Publisher Date 2005-11-07
Publisher Place New York
Access Restriction Subscribed
Subject Keyword Punctured interval Tree structure Cascade Broadcast encryption
Content Type Text
Resource Type Article
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