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Title:
Distributed Smooth Projective Hashing and its Application to Two-Server PAKE
Authors: Franziskus Kiefer, Mark Manulis
Abstract:Smooth projective hash functions have been used as building block for various cryptographic applications, in particular for password-based authentication. In this work we propose the extended concept of distributed smooth projective hash functions where the computation of the hash value is distributed across n parties and show how to instantiate the underlying approach for languages consisting of Cramer-Shoup ciphertexts. As an application of distributed smooth projective hashing we build a new framework for the design of two-server password authenticated key exchange protocols, which we believe can help to “explain” the design of earlier two-server password authenticated key exchange protocols.
ePrint: https://eprint.iacr.org/2014/350
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