| Presentation | 2002/11/7 A New Public-Key Traitor Tracing Scheme Masafumi KUSAKAWA, Taizo SHIRAI, Jouji ABE, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | At EUROCRYPTO'98, Kurosawa and Desmedt proposed a traitor tracing scheme employing a public key encryption. In this scheme, the sender (or the system manager) distributes different parsonal keys to the authorized entities implying that the malicious activities of a traitor can be identified. However, if κ + 1 traitors collude, they can construct a pirate decorder which is resistant against identification of the traitors. To avoid this problem, Mitsunari, Sakai, and Kasahara have proposed a traitor tracing scheme using pairing operation on elliptic curve, but later on, they have shown a weakness of their own scheme, as well. Following the previously addressed results, in this paper, we propose a new public-key traitor tracing scheme. Our scheme employs the multiplicative group with modulus N = PQ, where P and Q are distinct primes, and accordingly it yields the efficient traitor tracing. Furthermore, the security of the proposed is discussed, and we have shown that it is a secure one. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Public-Key Traitor Tracing / Collusion Threshold / Traceability |
| Paper # | ISEC2002-79 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 2002/11/7(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Information Security (ISEC) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A New Public-Key Traitor Tracing Scheme |
| Sub Title (in English) | |
| Keyword(1) | Public-Key Traitor Tracing |
| Keyword(2) | Collusion Threshold |
| Keyword(3) | Traceability |
| 1st Author's Name | Masafumi KUSAKAWA |
| 1st Author's Affiliation | Ubiquitous Technology Laboratories, Sony Corporation() |
| 2nd Author's Name | Taizo SHIRAI |
| 2nd Author's Affiliation | Ubiquitous Technology Laboratories, Sony Corporation |
| 3rd Author's Name | Jouji ABE |
| 3rd Author's Affiliation | Ubiquitous Technology Laboratories, Sony Corporation |
| Date | 2002/11/7 |
| Paper # | ISEC2002-79 |
| Volume (vol) | vol.102 |
| Number (no) | 436 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |