Paper 2014/017
Two-round password-only authenticated key exchange in the three-party setting
Junghyun Nam, Kim-Kwang Raymond Choo, Juryon Paik, and Dongho Won
Abstract
We present the first provably-secure 3-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 2-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 2-round 3-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.
Metadata
- Available format(s)
- -- withdrawn --
- Category
- Cryptographic protocols
- Publication info
- Preprint. MINOR revision.
- Keywords
- three-party key exchangecommunication rounddictionary attackimplicit key authentication
- Contact author(s)
- jhnam @ kku ac kr
- History
- 2014-08-18: withdrawn
- 2014-01-07: received
- See all versions
- Short URL
- https://ia.cr/2014/017
- License
-
CC BY