| Presentation | 2003/11/6 Reconstruction Control of Partial Information in Ramp Scheme Keiichi HIROTA, Ryou KITAHARA, Masakazu ENDOU, Masashi YAMAMURO, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In ramp scheme, it is said that secret information can be partially reconstructed from fewer shares than the threshold. However, such reconstruction seems almost impossible in our observation. We propose a new scheme which is an extension of ramp scheme and enables reconstruction control: reconstruction of a specific partial information from specific combinations of fewer shares. In this paper, we describe an approach for deriving restriction formulas for reconstruction control of partial information and for decision of the polynomial function f. We also illustrate a distributed data storage system as an application of the proposal, which usually stores distributed shares safely and reconstructs partial information if required. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Secret Sharing Scheme / Ramp Scheme / Access Structures / Reconstruction Control |
| Paper # | ISEC2003-74,OIS2003-51 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 2003/11/6(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Vice Chair | |
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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) | Reconstruction Control of Partial Information in Ramp Scheme |
| Sub Title (in English) | |
| Keyword(1) | Secret Sharing Scheme |
| Keyword(2) | Ramp Scheme |
| Keyword(3) | Access Structures |
| Keyword(4) | Reconstruction Control |
| 1st Author's Name | Keiichi HIROTA |
| 1st Author's Affiliation | NTT Cyber Solutions Laboratries() |
| 2nd Author's Name | Ryou KITAHARA |
| 2nd Author's Affiliation | NTT Cyber Solutions Laboratries |
| 3rd Author's Name | Masakazu ENDOU |
| 3rd Author's Affiliation | NTT Cyber Solutions Laboratries |
| 4th Author's Name | Masashi YAMAMURO |
| 4th Author's Affiliation | NTT Cyber Solutions Laboratries |
| Date | 2003/11/6 |
| Paper # | ISEC2003-74,OIS2003-51 |
| Volume (vol) | vol.103 |
| Number (no) | 416 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |