Publication Type

Conference Proceeding Article

Version

publishedVersion

Publication Date

9-2017

Abstract

There are several frameworks for password-based authenticated key exchange (PAKE) protocols with common reference string following the work of Katz, Ostrovsky and Yung (Eurocrypt’01), and it seems that the IND-CCA secure encryption is inevitable when constructing PAKE in standard model.In this paper, we show that IND-PCA secure key encapsulation mechanism (KEM) is enough for PAKE, which is weaker and easier to be constructed than IND-CCA secure encryption. Our refined PAKE consists of a smooth projective hash function on IND-CPA secure encryption and an IND-PCA secure KEM. Based on DDH assumption, the total communication of PAKE consists of 6 group elements and log⁡|D| (D is the set of password) bits, while before this, the most efficient PAKE contains 7 group elements.

Keywords

Password-based authenticated key exchange, Smooth projective hash functions, IND-PCA secure KEM

Discipline

Information Security

Research Areas

Cybersecurity

Areas of Excellence

Digital transformation

Publication

Proceedings of the 12th International Workshop on Security, IWSEC 2017 Hiroshima, Japan, August 30 - September 1,

First Page

231

Last Page

241

ISBN

9783319642000

Identifier

10.1007/978-3-319-64200-0_14

Publisher

Springer

City or Country

Cham

Copyright Owner and License

Authors

Additional URL

https://doi.org/10.1007/978-3-319-64200-0_14

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