Weakness in a RSA-based password authenticated key exchange protocol

Taek Young Youn, Young Ho Park, Changhan Kim, Jong In Lim

Research output: Contribution to journalArticle

5 Citations (Scopus)


Recently, an efficient password-authenticated key exchange protocol based on RSA has been proposed by Park et al. with formal security proof. In this letter, we analyze their protocol, and show that, unfortunately, it is insecure against an adversary who performs a dictionary attack.

Original languageEnglish
Pages (from-to)339-342
Number of pages4
JournalInformation Processing Letters
Issue number6
Publication statusPublished - 2008 Nov 30



  • Cryptography
  • Dictionary attack
  • Key exchange
  • Password
  • RSA

ASJC Scopus subject areas

  • Information Systems
  • Computer Science Applications
  • Signal Processing
  • Theoretical Computer Science

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