| Presentation | 2009/7/29 Building Time-Stamp Authority Grid and Basic Experiment Takeshi NISHIKAWA, |
|---|---|
| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Digital time stamping based on digital signatures proved the existence of a digital data prior to a specific point in time and that the contents have not changed since that time. The centralized simple time-stamping authority has high administrative costs and lack of scalability of performance. Distributed time-stamping methods were proposed to solve the problems, but still have the problem to prepare many TSAs. We had shown that K=L+M among N for G-generation method is able to solve these existing problems. That method does the time-stamping to the mutuality by using many time-stamping units. In this report, we expanded our distributed time-stamping method. We append various attribute classes to the distributed time-stamping units, and introduced layered structure in the unit. We developed K=Σ_iL_i+Σ_jM_j among N for G-generation method. As that result, we are able to issue distributed time-stamps classified by each attribute of time-stamping unit. For example, it became possible that a distributed timestamps was built from the group of time stamps that it was issued from the time-stamping unit installed only in Japan. And also it improved the system tolerance for distributed denial of service attack more at former method for the multiple layer of time-stamping unit. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | time-stamping / time-stamp / distributed denial of service attack |
| Paper # | DC2009-20 |
| Date of Issue |
| Conference Information | |
| Committee | DC |
|---|---|
| Conference Date | 2009/7/29(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Dependable Computing (DC) |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Building Time-Stamp Authority Grid and Basic Experiment |
| Sub Title (in English) | |
| Keyword(1) | time-stamping |
| Keyword(2) | time-stamp |
| Keyword(3) | distributed denial of service attack |
| 1st Author's Name | Takeshi NISHIKAWA |
| 1st Author's Affiliation | Tokyo Institute of Technology() |
| Date | 2009/7/29 |
| Paper # | DC2009-20 |
| Volume (vol) | vol.109 |
| Number (no) | 169 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |