| Presentation | 2005-12-16 Improvement of Subset Difference Method Using Commutative Function Mai NAKAGAWA, Wataru KISHIMOTO, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | When we bradcast some kind of data such as music or movie, we employ a revocation scheme to protect its copyright. Naor et. al. proposed Complete Subtree Method and Subset Differnece Method as a revocation scheme. Complete Subtree Method requires the small number of private keys as well as the large number of cipher texts. On the other hand, Subset Difference Method requires the small number of cipher texts as well as the large number of private keys. In this paper, we show an improvement of Subset Difference Method with using commutative one-way function to reduce the size of private keys. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | key tree structure / revocation scheme / trapdoor one-way function / Subset-Cover Revocation / Subset Difference Method |
| Paper # | ISEC2005-114 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 2005/12/9(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
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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) | Improvement of Subset Difference Method Using Commutative Function |
| Sub Title (in English) | |
| Keyword(1) | key tree structure |
| Keyword(2) | revocation scheme |
| Keyword(3) | trapdoor one-way function |
| Keyword(4) | Subset-Cover Revocation |
| Keyword(5) | Subset Difference Method |
| 1st Author's Name | Mai NAKAGAWA |
| 1st Author's Affiliation | Chiba University Graduate School of Science and Technology() |
| 2nd Author's Name | Wataru KISHIMOTO |
| 2nd Author's Affiliation | Chiba University Faculty of Engineering |
| Date | 2005-12-16 |
| Paper # | ISEC2005-114 |
| Volume (vol) | vol.105 |
| Number (no) | 484 |
| Page | pp.pp.- |
| #Pages | 7 |
| Date of Issue | |