| Presentation | 2004-12-17 Time-Capsule Encryption Maki YOSHIDA, Shigeo MITSUNARI, Toru FUJIWARA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We have designed a new timed-release encryption, called time-capsule encryption, and implemented it. In our scheme, a time signal signed by a public agent announces a time, and a signed time signal is used as a decryption key. A signature scheme using a pairing map is the main building block. In this paper, we introduce a recovery signal which allows those who missed a signed time signal to recover the corresponding decryption key. To introduce such a recovery signal, we construct a new time-capsule encryption scheme using another signature scheme with a pairing map and extend the new scheme to include a recovery signal. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Timed-release encryption / time-capsule encryption / time signal / signed time signal / pairing map |
| Paper # | ISEC2004-98 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 2004/12/10(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 | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Time-Capsule Encryption |
| Sub Title (in English) | |
| Keyword(1) | Timed-release encryption |
| Keyword(2) | time-capsule encryption |
| Keyword(3) | time signal |
| Keyword(4) | signed time signal |
| Keyword(5) | pairing map |
| 1st Author's Name | Maki YOSHIDA |
| 1st Author's Affiliation | Graduate School of Information Science and Technology, Osaka University() |
| 2nd Author's Name | Shigeo MITSUNARI |
| 2nd Author's Affiliation | u10 Networks, Inc. |
| 3rd Author's Name | Toru FUJIWARA |
| 3rd Author's Affiliation | Graduate School of Information Science and Technology, Osaka University |
| Date | 2004-12-17 |
| Paper # | ISEC2004-98 |
| Volume (vol) | vol.104 |
| Number (no) | 527 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |