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コマノ ユウイチ
Yuichi Komano
駒野 雄一 所属 千葉工業大学 情報変革科学部 高度応用情報科学科 千葉工業大学 情報科学研究科 情報科学専攻 職種 教授 |
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| 言語種別 | 英語 |
| 発行・発表の年月 | 2014 |
| 形態種別 | 国際会議プロシーディングス |
| 査読 | 査読あり |
| 標題 | A New Model of Client-Server Communications under Information Theoretic Security |
| 執筆形態 | 共著 |
| 掲載誌名 | 2014 IEEE INFORMATION THEORY WORKSHOP (ITW) |
| 掲載区分 | 国外 |
| 出版社・発行元 | IEEE |
| 巻・号・頁 | pp.511-515 |
| 著者・共著者 | Mitsugu Iwamoto,Tsukasa Omino,Yuichi Komano,Kazuo Ohta |
| 概要 | A new model for a Client-Server Communication (CSC) system satisfying information theoretic security is proposed, and its fundamental properties are discussed. Our CSC allows n users to upload their respective messages to a server securely by using symmetric key encryptions with their own keys, and all ciphertexts are decrypted by the server.
If we require all messages to be perfectly secure in CSC against the corrupted clients and adversaries without any keys, it is proved that a one time pad or more inefficient encryption must be used for each communication link between a client and the server. This means that, in order to realize more efficient CSC, it is necessary to leak out some information of each message. Based on these observations, we introduce a new model for such a secure CSC formally, and discuss its fundamental properties. In addition, we propose the optimal construction of CSC under several constraints on security parameters called security rates. |
| DOI | 10.1109/ITW.2014.6970884 |
| ISSN | 2475-420X |
| PermalinkURL | http://dblp.uni-trier.de/db/conf/itw/itw2014.html#conf/itw/IwamotoOKO14 |