YONEYAMA (2009) Does Secure Password-Based Authenticated Key Exchange against Leakage of Internal States Exist?

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Does Secure Password-Based Authenticated Key Exchange against Leakage of Internal States Exist?

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CONTRIBUTORS:

Author:

YONEYAMA, Kazuki

JOURNAL:

IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, E92A(1), 113 - 121.

YEAR:

2009

PUB TYPE:

Journal Article

SUBJECT(S):

None

DISCIPLINE:

Computer Science

HTTP:

http://www.jstage.jst.go.jp/article/transfun/E92.A/1/E92.A_113/_cit

LANGUAGE:

English

PUB ID:

103-463-363 (Last edited on 2009/11/07 15:29:22 US/Mountain)

SPONSOR(S):

ABSTRACT:
In this paper, we raise a question about existence of secure password-based authenticated key exchange against leakage of internal states (i.e., the passwords and session-specific private information). Toward this question, first, we classify six models of adversary's capabilities about leakage. Next, as a result of considerations for 2-party PAKE, we find two negative answers, but also find a positive answer. More specifically, we show that there exists no scheme which is secure in strong leakage models, but we also show that there exists a scheme which is secure in weak leakage models. Also, we consider the case of 3-party setting which is a special setting of password-based authenticated key exchange, and we find similar impossibilities as 2-party setting.

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