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    政大機構典藏 > 理學院 > 資訊科學系 > 會議論文 >  Item 140.119/78883
    Please use this identifier to cite or link to this item: http://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.
    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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