NDLI: Security proofs for an efficient password-based key exchange

Content Provider	ACM Digital Library
Author	Chevassut, Olivier Pointcheval, David Bresson, Emmanuel
Abstract	Password-based key exchange schemes are designed to provide entities communicating over a public network, and sharing a (short) password only, with a session key (e.g, the key is used for data integrity and/or confidentiality). The focus of the present paper is on the analysis of very efficient schemes that have been proposed to the IEEE P1363 Standard working group on password-based authenticated key-exchange methods, but which actual security was an open problem. We analyze the AuthA key exchange scheme and give a complete proof of its security. Our analysis shows that the AuthA protocol and its multiple modes of operations are provably secure under the computational Diffie-Hellman intractability assumption, in both the random-oracle and the ideal-ciphers models.
Starting Page	241
Ending Page	250
Page Count	10
File Format	PDF
ISBN	1581137389
DOI	10.1145/948109.948142
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2003-10-27
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Key exchange Password-based authentication
Content Type	Text
Resource Type	Article

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Security proofs for an efficient password-based key exchange