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Secure Cross-Realm C2C-PAKE Protocol

  • Yin Yin
  • Li Bao
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4058)

Abstract

Client-to-client password authenticated key exchange (C2C-PAKE) protocol deals with the authenticated key exchange process between two clients, who only share their passwords with their own servers. Jin Wook Byun et al. first divided this scenario into two kinds called single-server C2C-PAKE protocol and cross-realm C2C-PAKE protocol respectively. Recently, Abdalla et al. proposed a generic construction for single-server C2C-PAKE protocol and presented a concrete example with security proof. But, no similar results about cross-realm C2C-PAKE protocol exist. In fact, all existing cross-realm C2C-PAKE protocols are found insecure. To counter flaws and provide a secure cross-realm C2C-PAKE protocol, in this paper, we introduce a formal model and corresponding security definitions. Then, a new cross-realm C2C-PAKE protocol is presented with security proof.

Keywords

Trust Third Party Dictionary Attack Oracle Query Security Notion Semantic Security 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Yin Yin
    • 1
  • Li Bao
    • 1
  1. 1.Graduate School of Chinese Academy of SciencesState Key Laboratory of Information SecurityBeijingChina

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