| Presentation | 2005-07-21 Oblivious Signature, Revised Nobuyuki SHIINA, Takeshi OKAMOTO, Eiji OKAMOTO, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | An oblivious signature scheme consists of three entities : a signer S, a recipient R and a verifier V. In this scheme, R can obtain k signatures from n messages whereas S cannot know which messages R chose. Therefore, such a scheme can be used to keep the user's privacy. In this paper, we formalize the notion of oblivious signature and propose two efficient schemes : DSA and ECDSA based schemes. We also give the relation between oblivious signatures and oblivious transfer. Finally, we discuss the properties of our schemes by evaluating communication cost, computational cost and so on. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | oblivious signatures / oblivious transfer / DSA / ECDSA / digital signature standard |
| Paper # | ISEC2005-31,SITE2005-29 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 2005/7/14(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| 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) | Oblivious Signature, Revised |
| Sub Title (in English) | |
| Keyword(1) | oblivious signatures |
| Keyword(2) | oblivious transfer |
| Keyword(3) | DSA |
| Keyword(4) | ECDSA |
| Keyword(5) | digital signature standard |
| 1st Author's Name | Nobuyuki SHIINA |
| 1st Author's Affiliation | Graduate School of Systems and Information Engineering, University of Tsukuba() |
| 2nd Author's Name | Takeshi OKAMOTO |
| 2nd Author's Affiliation | Graduate School of Systems and Information Engineering, University of Tsukuba |
| 3rd Author's Name | Eiji OKAMOTO |
| 3rd Author's Affiliation | Graduate School of Systems and Information Engineering, University of Tsukuba |
| Date | 2005-07-21 |
| Paper # | ISEC2005-31,SITE2005-29 |
| Volume (vol) | vol.105 |
| Number (no) | 193 |
| Page | pp.pp.- |
| #Pages | 7 |
| Date of Issue | |