Cryptanalysis of Group Key Agreement Protocol Based on Chaotic Hash Function
Eun‐Jun Yoon, Kee-Young Yoo · IEICE Transactions on Information and Systems · 2011
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.