International Association for Cryptologic Research

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Paper: Hybrid Protocol For Password-based Key Exchange in Three-party Setting

Authors:
TingMao Chang
Jin Zhou
YaJuan Zhang
YueFei Zhu
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URL: http://eprint.iacr.org/2006/452
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Abstract: Modular design is a common approach for dealing with complex tasks in modern cryptology. The critical of this approach is that designing a secure hybrid protocol. In this paper, we study password-based key exchange in the three-party setting within the UC framework and design a hybrid protocol that UC-securely realizes such task. That is, we firstly define an appropriate ideal functionality F3-pwKE for password-based three-party key exchange. Next we partition the task into two sub-tasks, three-party key distribution and password-based two-party key exchange, and propose relevant two ideal functionalities, F3-KD, FpwKE. Finally, we present a (F3-KD, FpwKE) -hybrid protocol for password-based three-party key exchange that is proved to be UC-secure with respect to non- adaptive party corruption.
BibTeX
@misc{eprint-2006-21943,
  title={Hybrid Protocol For Password-based Key Exchange in Three-party Setting},
  booktitle={IACR Eprint archive},
  keywords={cryptographic protocols /},
  url={http://eprint.iacr.org/2006/452},
  note={ zhoujin820916.jojo@yahoo.com.cn 13481 received 29 Nov 2006},
  author={TingMao Chang and Jin Zhou and YaJuan Zhang and YueFei Zhu},
  year=2006
}