Password-Authenticated Key Exchange for Multi-Party with Different Passwords Using a Constant Number of Rounds

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概要

• 論文の詳細を見る

• Multi-party password-authenticated key exchange (PAKE) with different passwords allows the users of a group to agree on a common session key with their different passwords by the help of a server. In this setting, a user shares a password only with the server, but not between the users. In this paper, we present two multi-party PAKE protocols. The suggested protocols are provably-secure in the standard model. Our first protocol is designed to provide forward secrecy and security against known-key attacks. The second protocol is designed to additionally provide key secrecy against the server which means that even the server can not know the session keys of the users of a group. The suggested protocols require a constant number of rounds.

• 一般社団法人情報処理学会の論文
• 2006-07-20

著者

• SAKURAI Kouichi

  Department of Computer Science and Communication Engineering, Kyushu University

• Lee Dong

  Graduate School of Information Management & Security, CIST, Korea University

• Lee Dong

  Graduate School Of Information Security Cist Korea University

• Sakurai Kouichi

  Department Of Computer Science And Communication Engineering Kyushu University

• KWON Jeong

  Graduate School of Information Security CIST, Korea university

• Kwon Jeong

  Graduate School Of Information Security Cist Korea University

• Sakurai Kouichi

  Department Of Computer Science And Communication Engineering Faculty Of Information Science And Elec

• Lee Dong

  Graduate School Of Information & Communication Ajou University

• Sakurai Kouichi

  Department Of Applied Science Faculty Of Engineering 36 Kyushu University

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