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Cryptanalysis of Group Key Agreement Protocol Based on Chaotic Hash Function
Eun-Jun YOON Kee-Young YOO
IEICE TRANSACTIONS on Information and Systems
Publication Date: 2011/11/01
Online ISSN: 1745-1361
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)>>
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.