| Presentation | 2004-11-09 Transformation-Free Proxy Cryptosystems with Limited Authorization Lihua WANG, Zhenfu GAG, Eiji OKAMOTO, Ying MIAO, Takeshi OKAMOTO, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper transformation-free proxy cryptosystems with limited authorization (TFP systems) are studied. The TFP system is a modification of the proxy cryptosystem introduced by Mambo and Okamoto [6] in which a ciphertext transformation by the original decryptor is necessary. The TFP system allows proxy decryptor to do decryption without any ciphertext transformation, so that it can release the original decryptor more efficiently from a large amount of decrypting operations. An active identity-based and a directory-based TFP systems based on pairings are proposed. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | proxy cryptosystem / pairing / transformation-free / limited authorization |
| Paper # | ISEC2004-88,OIS2004-55 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 2004/11/2(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 | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Transformation-Free Proxy Cryptosystems with Limited Authorization |
| Sub Title (in English) | |
| Keyword(1) | proxy cryptosystem |
| Keyword(2) | pairing |
| Keyword(3) | transformation-free |
| Keyword(4) | limited authorization |
| 1st Author's Name | Lihua WANG |
| 1st Author's Affiliation | Graduate School of Systems and Information Engineering, University of Tsukuba() |
| 2nd Author's Name | Zhenfu GAG |
| 2nd Author's Affiliation | Department of Computer Science and Engineering, Shanghai Jiao Tong University |
| 3rd Author's Name | Eiji OKAMOTO |
| 3rd Author's Affiliation | Graduate School of Systems and Information Engineering, University of Tsukuba |
| 4th Author's Name | Ying MIAO |
| 4th Author's Affiliation | Graduate School of Systems and Information Engineering, University of Tsukuba |
| 5th Author's Name | Takeshi OKAMOTO |
| 5th Author's Affiliation | Graduate School of Systems and Information Engineering, University of Tsukuba |
| Date | 2004-11-09 |
| Paper # | ISEC2004-88,OIS2004-55 |
| Volume (vol) | vol.104 |
| Number (no) | 422 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |