Efficient and provably secure client-to-client password-based key exchange protocol

被引:0
|
作者
Byun, JW [1 ]
Lee, DH [1 ]
Lim, JI [1 ]
机构
[1] Korea Univ, Ctr Informat Secur Technol, Seoul 136701, South Korea
关键词
human memorable password; mobile computing; different password authentication; authenticated key exchange; dictionary attacks;
D O I
暂无
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
We study client-to-client password-authenticated key exchange (C2C-PAKE) enabling two clients in different realms to agree on a common session key using different passwords. Byun et al. first presented C2C-PAKE schemes under the cross-realm setting. However, the schemes were not formally treated, and subsequently found to be flawed. In addition, in the schemes, there are still rooms for improvements both in computational and communicational aspects. In this paper we suggest an efficient C2C-PAKE (EC2C-PAKE) protocol, and prove that EC2C-PAKE protocol is secure under the decisional Diffie-Hellman assumption in the ideal cipher and random oracle models.
引用
收藏
页码:830 / 836
页数:7
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