OAKE: a new family of implicitly authenticated diffie-hellman protocols

  • Authors:
  • Andrew Chi-Chih Yao;Yunlei Zhao

  • Affiliations:
  • Institute for Interdisciplinary Information Sciences,Tsinghua University, Beijing, China;Software School, Fudan University & State Key Laboratory of Information Security, Shanghai, China

  • Venue:
  • Proceedings of the 2013 ACM SIGSAC conference on Computer & communications security
  • Year:
  • 2013

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Abstract

Cryptographic algorithm standards play an important role both to the practice of information security and to cryptography theory research. Among them, the KEA and OPACITY (KEA/OPACITY, in short) protocols, and the MQV and HMQV ((H)MQV, in short) protocols, are a family of implicitly authenticated Diffie-Hellman key-exchange (IA-DHKE) protocols that are among the most efficient authenticated key-exchange protocols known and are widely standardized. In this work, from some new design insights, we develop a new family of practical IA-DHKE protocols, referred to as OAKE (standing for "optimal authenticated key-exchange" in brief). We show that the OAKE protocol family combines, in essence, the advantages of both (H)MQV and KEA/OPACITY, while saving from or alleviating the disadvantages of them both.