Paper 2009/468

Password Based Key Exchange with Hidden Elliptic Curve Public Parameters

Julien Bringer, Herve Chabanne, and Thomas Icart


We here describe a new Password-based Authenticated Key Exchange (PAKE) protocol based on elliptic curve cryptography. We prove it secure in the Bellare-Pointcheval-Rogaway (BPR) model. Our proposal is conceived in a such a way that it ensures that the elliptic curve public parameters remain private. This is important in the context of ID contactless devices as, in this case, it is easy to link these parameters with the nationality of the ID document owners.

Note: This paper is an extended version of the extended abstract "Password Based Key Exchange Protocols on Elliptic Curves which Conceal the Public Parameters" that will be presented at ACNS 2010.

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Published elsewhere. Unknown where it was published
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julien bringer @ gmail com
2010-04-27: revised
2009-09-26: received
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      author = {Julien Bringer and Herve Chabanne and Thomas Icart},
      title = {Password Based Key Exchange with Hidden Elliptic Curve Public Parameters},
      howpublished = {Cryptology ePrint Archive, Paper 2009/468},
      year = {2009},
      note = {\url{}},
      url = {}
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