Two-round password-only authenticated key exchange in the three-party setting
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(Published version)
Date
2015
Authors
Nam, J.
Choo, K.K.R.
Sangchul, H.
Paik, J.
Won, D.
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Journal article
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Symmetry, 2015; 7(1):105-124
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Abstract
We present the first provably-secure three-party password-only authenticated key exchange (PAKE) protocol that can run in only two communication rounds. Our protocol is generic in the sense that it can be constructed from any two-party PAKE protocol. The protocol is proven secure in a variant of the widely-accepted model of Bellare, Pointcheval and Rogaway (2000) without any idealized assumptions on the cryptographic primitives used. We also investigate the security of the two-round, three-party PAKE protocol of Wang, Hu and Li (2010) and demonstrate that this protocol cannot achieve implicit key authentication in the presence of an active adversary.
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Copyright 2015 The Authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (https://creativecommons.org/licenses/by-nc-sa/4.0/)