| Presentation | 2005-05-18 Construction methods of provably secure threshold cryptosystems in public key setting Takeru ISHIHARA, Hiroshi AONO, Sadayuki HONGO, Junji SHIKATA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The threshold cryptosystem is a threshold distributed version of the public key cryptosystem. We propose generic construction of threshold cryptosystems using Abe's generic construction of IND-CCA scheme that consists of key-encapsulation scheme, symmetric-key encryption scheme, and signature scheme. We also construct concrete example by using RSA, vernam cipher, and modified GQ signature. This threshold cryptosystem is a first scheme that achieves IND-TCCA under the RSA assumption in the random oracle model. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Threshold Cryptosystem / Secret Sharing Scheme |
| Paper # | ISEC2005-1 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 2005/5/11(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | 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) | Construction methods of provably secure threshold cryptosystems in public key setting |
| Sub Title (in English) | |
| Keyword(1) | Threshold Cryptosystem |
| Keyword(2) | Secret Sharing Scheme |
| 1st Author's Name | Takeru ISHIHARA |
| 1st Author's Affiliation | NTT DoCoMo, Inc.() |
| 2nd Author's Name | Hiroshi AONO |
| 2nd Author's Affiliation | NTT DoCoMo, Inc. |
| 3rd Author's Name | Sadayuki HONGO |
| 3rd Author's Affiliation | NTT DoCoMo, Inc. |
| 4th Author's Name | Junji SHIKATA |
| 4th Author's Affiliation | Graduate School of Environment and Information Sciences, Yokohama National University |
| Date | 2005-05-18 |
| Paper # | ISEC2005-1 |
| Volume (vol) | vol.105 |
| Number (no) | 51 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |