| Presentation | 2005-03-18 Unconditionally Secure Group Signature Schemes Takenobu SEITO, Kazuyuki KINOSE, Junji SHIKATA, Tsutomu MATSUMOTO, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A group signature scheme introduced by Chaum and Van Heyst allow a group member to sign message anonymously on behalf of the group. However, in the case of a dispute, the identity of a signer can be revealed by a group maneger. A group signature schemes have mainly been studied from a viewpoint of computational security setting so far. In this paper, we study group signatures with the viewpoint of unconditionally secure setting. Especially, we newly introduce a model and security notions of unconditionally secure group signatures (USGS, for short). And, we formulate our security notions. Furthermore, we propose a construction method for USGS that are provably secure in our strong security notions. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | group signature schemes / unconditionally security / information-theoretic security |
| Paper # | IT2004-72,ISEC2004-128,WBS2004-187 |
| Date of Issue |
| Conference Information | |
| Committee | WBS |
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| Conference Date | 2005/3/11(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Wideband System(WBS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Unconditionally Secure Group Signature Schemes |
| Sub Title (in English) | |
| Keyword(1) | group signature schemes |
| Keyword(2) | unconditionally security |
| Keyword(3) | information-theoretic security |
| 1st Author's Name | Takenobu SEITO |
| 1st Author's Affiliation | Graduate School of Environment and Information Sciences, Yokohama National University() |
| 2nd Author's Name | Kazuyuki KINOSE |
| 2nd Author's Affiliation | Graduate School of Environment and Information Sciences, Yokohama National University |
| 3rd Author's Name | Junji SHIKATA |
| 3rd Author's Affiliation | Graduate School of Environment and Information Sciences, Yokohama National University |
| 4th Author's Name | Tsutomu MATSUMOTO |
| 4th Author's Affiliation | Graduate School of Environment and Information Sciences, Yokohama National University |
| Date | 2005-03-18 |
| Paper # | IT2004-72,ISEC2004-128,WBS2004-187 |
| Volume (vol) | vol.104 |
| Number (no) | 734 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |