2013 Fiscal Year Final Research Report
A Study on a Robust Log Storage based on P2P network
| Project/Area Number |
22500080
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Media informatics/Database
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| Research Institution | Ibaraki University |
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Principal Investigator |
OHTAKI Yasuhiro 茨城大学, IT基盤センター, 准教授 (30261738)
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| Project Period (FY) |
2010-10-20 – 2014-03-31
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| Keywords | 検索可能暗号 / 監査ログ / Dynamic SSE |
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| Research Abstract |
Robust Log storage based on P2P network can be constructed by building tamper resistant log storage system on a P2P distributed file system. Each log message are first converted into several shares by secret sharing scheme. Then each share are encrypted with symmetric searchable encryption (SSE) scheme and then stored on some P2P nodes. Since P2P nodes could not assumed to be honest, we need a scheme which can verify that each node followed the scheme correctly. We proposed a verifiable SSE scheme and a verifiable dynamic SSE scheme. We've implemented prototype system. We found that the dynamic scheme require very high computation cost on each peer, and thus it is not yet feasible for practical use.
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