Provably secure threshold password-authenticated key exchange
نویسندگان
چکیده
منابع مشابه
Provably Secure Threshold Password-Authenticated Key Exchange
We present two protocols for threshold password authenticated key exchange. In this model for password authentication, the password is not stored in a single authenticating server but rather shared among a set of n servers so that an adversary can learn the password only by breaking into t+ 1 of them. The protocols require n > 3t servers to work. The goal is to protect the password against hack...
متن کاملProvably Secure Password-authenticated Key Exchange Using Diie-hellman
When designing password-authenticated key exchange protocols (as opposed to key exchange protocols authenticated using cryptographically secure keys), one must not allow any information to be leaked that would allow veriication of the password (a weak shared key), since an attacker who obtains this information may be able to run an oo-line dictionary attack to determine the correct password. We...
متن کاملProvably Secure Password-Authenticated Key Exchange Using Diffie-Hellman
When designing password-authenticated key exchange protocols (as opposed to key exchange protocols authenticated using cryptographically secure keys), one must not allow any information to be leaked that would allow verification of the password (a weak shared key), since an attacker who obtains this information may be able to run an off-line dictionary attack to determine the correct password. ...
متن کاملProvably Secure Gateway Threshold Password-Based Authenticated Key Exchange Secure against Undetectable On-Line Dictionary Attack
By using Password-based Authenticated Key Exchange (PAKE), a server can authenticate a user who has only the same password shared with the server in advance and establish a session key with the user simultaneously. However, in the real applications, we may have a situation where a user needs to share a session key with server A, but the authentication needs to be done by a different server B th...
متن کاملThreshold Anonymous Password - Authenticated Key Exchange Protocol ?
At Indocrypt 2005, Viet et al., [22] have proposed an anonymous password-authenticated key exchange (PAKE) protocol and its threshold construction both of which are designed for client’s password-based authentication and anonymity against a passive server, who does not deviate the protocol. In this paper, we first point out that their threshold construction is completely insecure against off-li...
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ژورنال
عنوان ژورنال: Journal of Computer and System Sciences
سال: 2006
ISSN: 0022-0000
DOI: 10.1016/j.jcss.2006.02.002