Publication: (Password) authenticated key establishment: From 2-party to group
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2007
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Tutors
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Springer
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Abstract
A protocol compiler is described, that transforms any provably secure authenticated 2-party key establishment into a provably secure authenticated group key establishment with 2 more rounds of communication. The compiler introduces neither idealizing assumptions nor high-entropy secrets, e.g., for signing. In particular, applying the compiler to a password-authenticated 2-party key establishment without random oracle assumption, yields a password-authenticated group key establishment without random oracle assumption. Our main technical tools are non-interactive and non-malleable commitment schemes that can be implemented in the common reference string (CRS) model.
Description
Proceedings of: TCC 2007: Fourth IACR Theory of Cryptography Conference, 21-24 February 2007, Amsterdam, The Netherlands.
Keywords
Common reference string model, Key establishment, Password-based authentication, Protocol compiler
Bibliographic citation
Abdalla, M., Bohli, J., González Vasco, M. I., & Steinwandt, R. (21-24 February 2007). (Password) Authenticated Key Establishment: From 2-Party to Group [proceedings]. In Theory of Cryptography: 4th Theory of Cryptography Conference, TCC 2007, Amsterdam, The Netherlands. Part of the Lecture Notes in Computer Science book series (LNSC,volume 4392).