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政大機構典藏 > 資訊學院 > 資訊科學系 > 會議論文 > Item 140.119/78883

Please use this identifier to cite or link to this item: https://nccur.lib.nccu.edu.tw/handle/140.119/78883

Title:	Three-party password-authenticated key exchange without random oracles
Authors:	Yi, X.;Tso, Ray-Lin;Okamoto, E. 左瑞麟
Contributors:	資訊科學系
Keywords:	Client needs;Dictionary attack;Elgamal encryption;Formal model;Generic construction;ID-based;ID-based encryption;Identity Based Encryption;Password-authenticated key exchange;Private key;Random Oracle model;Session key;Three-party;Without random oracles;Access control;Computer crime;Cryptography
Date:	2011-07
Issue Date:	2015-10-08 17:16:43 (UTC+8)
Abstract:	Password-authenticated key exchange (PAKE) in the 3-party setting is where two clients, who do not share a password between themselves but only with a server, establish a common session key with the help of the server. Abdalla, Fouque and Pointcheval were the first formally to address 3-party PAKE issue and presented a natural and generic construction from any 2-party PAKE protocols. Soon after, Abdalla and Pointcheval presented a more efficient 3-party PAKE protocol and proved its security in the random oracle model. In this paper, we present a new 3-party PAKE protocol on the basis of identity-based encryption and ElGamal encryption schemes. In our protocol, the client needs to remember passwords and the server`s identity only while the server keeps passwords in addition to a private key related to its identity. We have put forth a formal model of security for ID-based 3-party PAKE, and provided a rigorous proof of security for our protocol without random oracles.
Relation:	SECRYPT 2011 - Proceedings of the International Conference on Security and Cryptography
Data Type:	conference
Appears in Collections:	[資訊科學系] 會議論文

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