Efficient password-based group key exchange

Su Mi Lee, Jung Yeon Hwang, Dong Hoon Lee

Research output: Chapter in Book/Report/Conference proceedingChapter

39 Citations (Scopus)

Abstract

Password-based authenticated group key exchange (denoted by PGKE) provides n parties holding a common human-memorable password with secure group communication. Most PGKE protocols proposed so far are inefficient since they require O(n) communication rounds where n is the number of group members. In the paper, we propose the first 2-round PGKE protocol with 3-exponentiations required per user and prove its security in the random oracle model and the ideal cipher model under the intractability of the decision Diffie-Hellman problem and computation Difiie-Hellman problem. The proposed protocol also provides forward secrecy.

Original languageEnglish
Title of host publicationLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
EditorsSokratis Katsikas, Javier Lopez, Gunther Pernul
PublisherSpringer Verlag
Pages191-199
Number of pages9
ISBN (Print)3540229191
DOIs
Publication statusPublished - 2004

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume3184
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)

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    Lee, S. M., Hwang, J. Y., & Lee, D. H. (2004). Efficient password-based group key exchange. In S. Katsikas, J. Lopez, & G. Pernul (Eds.), Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (pp. 191-199). (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 3184). Springer Verlag. https://doi.org/10.1007/978-3-540-30079-3_20