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| Title | Non-perfectly secure identity based decentralized key distribution system (in Japanese) |
|---|---|
| Authors | Takahiro YOSHIDA 、Toshiyasu MATSUSHIMA 、Shigeichi HIRASAWA |
| Released Year | 2004 |
| Format | Conference |
| Category | Information security |
| Jounal Name | Proceedings of the 27th Symposium on Information Theory and its Applications |
| Jounal Page | vol.1, pp.327-360 |
| Published Year | 2004 |
| Published Month | 12 |
| Abstract （English） |
A key distribution scheme is a method to distribute off-line initial private pieces of information among a set of users, such that each group of a given size can compute a common key for secure conference. In this paper, we consider a ramp model for key distribution scheme. In the ramp model, the required resources can be reduced at the cost of a secerity degradation which depends on the size of users. We define a ramp model for key distribution scheme, show lower bounds on the size of the piece of a user's information and design a ramp model for key distribution scheme. |
| Note （English） |
1 |
| Manuscript | |
| Presentation |
