| 講演抄録／キーワード |
| 講演名 |
2004-12-17 13:10
タイムカプセル暗号
○吉田真紀（阪大）・光成滋生（ユーテン・ネットワークス）・藤原 融（阪大） |
| 抄録 |
（和） |
(まだ登録されていません) |
| （英） |
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. |
| キーワード |
（和） |
タイムドリリース暗号 / タイムカプセル暗号 / 復号時刻 / 時報 / 署名付き時報 / ペアリング / / |
| （英） |
Timed-release encryption / time-capsule encryption / release time / time signal / signed time signal / pairing map / / |
| 文献情報 |
信学技報, vol. 104, no. 527, ISEC2004-98, pp. 1-5, 2004年12月. |
| 資料番号 |
ISEC2004-98 |
| 発行日 |
2004-12-10 (ISEC) |
| ISSN |
Print edition: ISSN 0913-5685 |
| PDFダウンロード |
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