| Project/Area Number |
14550358
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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 |
情報通信工学
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| Research Institution | Kobe University |
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Principal Investigator |
TANAKA Hatsukazu Kobe University, Faculty of Engineering, Professor, 工学部, 教授 (80031144)
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| Co-Investigator(Kenkyū-buntansha) |
KUWAKADO Hidenori Kobe University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (30283914)
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| Project Period (FY) |
2002 – 2003
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| Project Status |
Completed (Fiscal Year 2003)
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| Budget Amount *help |
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2003: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 2002: ¥2,200,000 (Direct Cost: ¥2,200,000)
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| Keywords | Identity Information / Discrete Logarithm / Key Sharing / Clone Center / Distributed KGC / Key Management / Key Escrow / 超大規模暗号通信ネットワーク |
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| Research Abstract |
The development of highly computerized society has generated a new important problem of "information security". One of effective schemes to cope with this problem is to introduce the cryptography, where the most important ploblem is how to share a common-key.
In this project we have promoted the research on a new key management system for the super-large-scale cipher communication network. The basic ideas are the concept of identity-based cryptosystem, and a new creative idea to generate a clone key generation center of the original to decrease the load of key generation center. First, we have studied a new realization scheme of identity-based key sharing scheme which can be implemented easily and is secure even for the user's collusion attack. Then we have succeeded to generate a clone key generation center from time original. As a result the msil-type cipher communication in the super-large-scale communication network can be realized using the hierarchiically structured key generation center constructed by the clone key generation center.
Finally, the possibility to use our key-management system in the real cipher communication network has been certified by implementing it on the PC cluster system.
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