Paper 2014/350

Distributed Smooth Projective Hashing and its Application to Two-Server PAKE

Franziskus Kiefer and Mark Manulis


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.

Available format(s)
Cryptographic protocols
Publication info
Published elsewhere. Major revision. 12th International Conference on Applied Cryptography and Network Security (ACNS '14)
smooth projective hashingtwo-server PAKE
Contact author(s)
f kiefer @ surrey ac uk
2014-05-19: received
Short URL
Creative Commons Attribution


      author = {Franziskus Kiefer and Mark Manulis},
      title = {Distributed Smooth Projective Hashing and its Application to Two-Server PAKE},
      howpublished = {Cryptology ePrint Archive, Paper 2014/350},
      year = {2014},
      note = {\url{}},
      url = {}
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