Cryptanalysis of security enhancement for a modified authenticated key agreement protocol

Kou Min Cheng, Ting-Yi  Chang, Jung Wen Lo

Research output: Contribution to journalLetterpeer-review

18 Citations (Scopus)


Recently, Chang et al. proposed a security enhancement in Ku and Wang's authenticated key agreement protocol. Two parties employ the pre-shared password to agreement a common session key via insecure network. However, in this article, we will show that Chang et al.'s scheme is suffer from the backward replay attack and the off-line password guessing attack.

Original languageEnglish
Pages (from-to)55-57
Number of pages3
JournalInternational Journal of Network Security
Issue number1
Publication statusPublished - 2010 Dec 1

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications

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