Welcome to the resource topic for 2013/649
Title:
Security Analysis of Password-Authenticated Key Retrieval
Authors: SeongHan Shin, Kazukuni Kobara
Abstract:A PAKR (Password-Authenticated Key Retrieval) protocol and its multi-server system allow one party (say, client), who has a rememberable password, to retrieve a long-term static key in an exchange of messages with at least one other party (say, server) that has a private key associated with the password. In this paper, we analyze the only one PAKR (named as PKRS-1) standardized in IEEE 1363.2 [9] and its multi-server system (also, [11]) by showing that any passive/active attacker can find out the client’s password and the static key with off-line dictionary attacks. This result is contrary to the security statement of PKRS-1 (see Chapter 10.2 of IEEE 1363.2 [9]).
ePrint: https://eprint.iacr.org/2013/649
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