| Presentation | 2007-09-07 A Study on Extended Multi-Recipient Encryption : Security Notion and Constructions Yasuo HATANO, Kunihiko MIYAZAKI, Toshinobu KANEKO, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper discusses an encryption scheme such that, in case that a ciphertext is sent to several users simultaneously, each user can decrypt a different part of ciphertext according to the user's secret key. In the case that a message includes some sensitive information, e.g., personal information, such information should be disclosed for only privileged users even if the message can be browsed by several users. In order to achieve this by a cryptographic technique, we can adopt a simple approach, e.g., a partial encryption. However, there is no security notion for such a situation. This paper discusses the security notion and shows some constructions. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Multi-Recipient / Partial Disclosing / Hybrid Encryption |
| Paper # | ISEC2007-88 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 2007/8/31(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) | A Study on Extended Multi-Recipient Encryption : Security Notion and Constructions |
| Sub Title (in English) | |
| Keyword(1) | Multi-Recipient |
| Keyword(2) | Partial Disclosing |
| Keyword(3) | Hybrid Encryption |
| 1st Author's Name | Yasuo HATANO |
| 1st Author's Affiliation | Hitachi, Ltd., Systems Development Laboratory, Yokohama Laboratory:Tokyo University of Science() |
| 2nd Author's Name | Kunihiko MIYAZAKI |
| 2nd Author's Affiliation | Hitachi, Ltd., Systems Development Laboratory, Yokohama Laboratory |
| 3rd Author's Name | Toshinobu KANEKO |
| 3rd Author's Affiliation | Tokyo University of Science |
| Date | 2007-09-07 |
| Paper # | ISEC2007-88 |
| Volume (vol) | vol.107 |
| Number (no) | 209 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |