| Presentation | 1998/9/17 RSA-based Distributed Trusted Third Agencies and their Application to an International Key Escrow System Shingo MIYAZAKI, Ikuko KURODA, Kouichi SAKURAI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In the key recovery system, the user deposits the copy of his own key to the distributed key recovery agencies as a back-up of the original key. The entity preserving the data encrypted with the key of a user implores either the concerned user or a set of key recovery agencies for decrypting the data. In the latter case, the entity can obtain the decrypted data by incorporating partial results, which each of distributed agencies can copmpute with a partial secret key deposited. In this paper, we propose a key recovery system based on RSA by applying the concept of such distributed proxy descryption and techniques of blind decoding. In the previous work, we proposed an international key escrow system[Miyazaki et al., ISEC98-16, 1998], that more than one ITTPs could escrow user's partial key by using(t, n)-threshold secret sharing scheme, which is based on the discrete logarithm problem. To present the scheme based RSA, we apply an algorithm proposed by Boneh and Franklin to our international key escrow system. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | key recovery / data recovery / trusted third party / distributed proxy decryption / RSA / international key escrow |
| Paper # | ISEC98-34 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 1998/9/17(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) | RSA-based Distributed Trusted Third Agencies and their Application to an International Key Escrow System |
| Sub Title (in English) | |
| Keyword(1) | key recovery |
| Keyword(2) | data recovery |
| Keyword(3) | trusted third party |
| Keyword(4) | distributed proxy decryption |
| Keyword(5) | RSA |
| Keyword(6) | international key escrow |
| 1st Author's Name | Shingo MIYAZAKI |
| 1st Author's Affiliation | Department of Computer Science and Communication Engineering Kyushu University() |
| 2nd Author's Name | Ikuko KURODA |
| 2nd Author's Affiliation | Project TEAM-4, NTT Human Interface Laboratories |
| 3rd Author's Name | Kouichi SAKURAI |
| 3rd Author's Affiliation | Department of Computer Science and Communication Engineering Kyushu University:(Present address)Currently visiting in Columbia Univ.Computer Science Dept. |
| Date | 1998/9/17 |
| Paper # | ISEC98-34 |
| Volume (vol) | vol.98 |
| Number (no) | 268 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |