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(from Chapter 1: Invited Addresses and Tutorials on Signals, Coding, Systems and Intelligent Techniques)
| Full Citation and Abstract
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Title: |
The hierarchical traceability codes for multimedia fingerprinting |
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Author(s): |
Yu-tzu Lin, Ja-ling Wu |
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Address: |
Department of Computer Science and Information Engineering,
National Taiwan University, Taipei, Taiwan
Department of Computer Science and Information Engineering/Graduate Institute
of Networking and Multimedia,
National Taiwan University, Taipei, Taiwan linyt @ cmlab.csie.ntu.edu.tw, wjl @ cmlab.csie.ntuj.edu.tw |
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Reference: |
SSIP-SP1, 2005 pp. 221 - 225 |
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Abstract/ Summary |
This paper presents a hierarchical designing strategy for constructing traceability codes. Traceability codes enable us to trace traitors of collusion attacks in the fingerprinting scheme. To increase the size of the customer base n and the collusion resilience c, the length of the traceability codes grow abruptly. However, in many fingerprinting applications, e.g. multimedia fingerprinting, large customer bases and collusion resilience are needed. As a result, the long-length fingerprinting codes become impractical because they are too long to be embedded in the content without damaging the transparency. The proposed hierarchical fingerprinting scheme divides the fingerprint-codeword into several hierarchies and encodes each hierarchy by traceability codes with smaller n and c, thus a traceability code with much shorter codeword-length is obtained. The user-management mechanism in broadcast encryption can also benefit from this hierarchical fingerprinting structure. |
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