| Presentation | 2007-09-07 Visual Cryptography Schemes with Tree Access Structure for Many Images Miyuki UNO, Mikio KANO, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Let T be a tree with order n and maximum degree three. We construct a visual cryptography sharing scheme with T access structure for n-1 secret images and n shares, where each vertex and each edge of T correspond to a share and a secret image, respectively, and two shares corresponding to two adjacent vertices of T decode the secret image corresponding to the edge joining them. This secret sharing scheme can be constructed by using Droste's method. However the contrast of its scheme is 1/(2(n-1)). In this paper, a new construction of such a secret sharing scheme with contrast 1/6 for all n is given. It is also shown that this contrast is sharp in some sense. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | visual cryptography / VCS / visual secret sharing / VSS / VCS for many secret images |
| Paper # | ISEC2007-77 |
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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) |
| Topics (in English) | |
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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) | Visual Cryptography Schemes with Tree Access Structure for Many Images |
| Sub Title (in English) | |
| Keyword(1) | visual cryptography |
| Keyword(2) | VCS |
| Keyword(3) | visual secret sharing |
| Keyword(4) | VSS |
| Keyword(5) | VCS for many secret images |
| 1st Author's Name | Miyuki UNO |
| 1st Author's Affiliation | Faculty of Engineering, Ibaraki University() |
| 2nd Author's Name | Mikio KANO |
| 2nd Author's Affiliation | Faculty of Engineering, Ibaraki University |
| Date | 2007-09-07 |
| Paper # | ISEC2007-77 |
| Volume (vol) | vol.107 |
| Number (no) | 209 |
| Page | pp.pp.- |
| #Pages | 7 |
| Date of Issue | |