| Presentation | 2007-04-20 Building Time-Stamp Authority Grid and Basic Experiment Takeshi NISHIKAWA, Satoshi MATSUOKA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Digital time stamping is a technique to prove the existence of a digital data prior to a specific point in time. The centralized time-stamping authority has two major difficulties. One is administrative costs and another is scalability of performance. Distributed time-stamping methods were proposed to solve the problems. But they still have the problem to prepare many TSAs. We have 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. And we also reported basic characteristics of the method and dependence on configuration parameters at the computer cluster environment on the LAN. In this report, we described that we built TSA Grid on the Internet to install several distributed TSU. And we investigated the influence of network time delay to the authorized time. We also considered that how many time-stamping units enable to be arithmetic mean value of responding authorized times within 1-second. As that result, if it prepared more than 256TSU that arithmetic mean of the authentication time because within 1 second. It became clear that the mode is able to get smaller delay time than that of arithmetic-mean. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | time-stamping / time-stamp / Grid |
| Paper # | CPSY2007-3,DC2007-3 |
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| Conference Information | |
| Committee | DC |
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| Conference Date | 2007/4/13(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Dependable Computing (DC) |
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| 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) | Grid |
| 1st Author's Name | Takeshi NISHIKAWA |
| 1st Author's Affiliation | Tokyo Institute of Technology() |
| 2nd Author's Name | Satoshi MATSUOKA |
| 2nd Author's Affiliation | Tokyo Institute of Technology:National Institute of Informatics |
| Date | 2007-04-20 |
| Paper # | CPSY2007-3,DC2007-3 |
| Volume (vol) | vol.107 |
| Number (no) | 17 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |