J Shanghai Jiaotong Univ Sci ›› 2011, Vol. 16 ›› Issue (4): 459-465.doi: 10.1007/s12204-011-1174-8

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Simple and efficient password-based authenticated key exchange protocol

Wang L.-B.; Pan J.-X.; Ma C.-S.   

  1. School of Computer, South China Normal University, Guangzhou 510631, China
  • Published:2025-06-27

Abstract: Password-based authenticated key exchange (PAKE) protocols are cryptographic primitives which enable two entities, who only share a memorable password, to identify each other and to communicate over a public unreliable network with a secure session key. In this paper, we propose a simple, efficient and provably secure PAKE protocol based on Diffie-Hellman key exchange and cryptographic hash function. Our protocol is secure against dictionary attacks. Its security is proved based on the hardness of the computational Diffie-Hellman problem in the random oracle model. © Shanghai Jiaotong University and Springer-Verlag Berlin Heidelberg 2011.

Key words: Key exchange; Password authentication; Provable security