Cryptanalysis of Group Key Agreement Protocol Based on Chaotic Hash Function

Eun-Jun YOON  Kee-Young YOO  

IEICE TRANSACTIONS on Information and Systems   Vol.E94-D   No.11   pp.2167-2170
Publication Date: 2011/11/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.E94.D.2167
Print ISSN: 0916-8532
Type of Manuscript: Special Section LETTER (Special Section on Information and Communication System Security)
cryptanalysis,  key agreement,  chaotic maps,  hash function,  Chebyshev map,  

Full Text: PDF(234.6KB)>>
Buy this Article

In 2010, Guo and Zhang proposed a group key agreement protocol based on the chaotic hash function. This letter points out that Guo-Zhang's protocol is still vulnerable to off-line password guessing attacks, stolen-verifier attacks and reflection attacks.