期刊名称：International Journal of Computer Science and Network Security
印刷版ISSN：1738-7906
出版年度：2006
卷号：6
期号：7B
页码：164-169
出版社：International Journal of Computer Science and Network Security
摘要：Hsu et al. [3] showed that the Ku-Wang [4] modified authentication key agreement scheme is vulnerable to the modification attack and further proposed an improvement of the Ku-Wang scheme. Recently, Lee-Lee [5] showed that the Hsu et al.'s scheme is vulnerable to the modification attack and proposed another improvement on the modified authenticated key agreement scheme. However, we will show that the Hsu et al.'s scheme suffers from the off-line guessing attack and the Lee-Lee’s scheme is still vulnerable to off-line guessing, man-in-the-middle, and reflection attacks. We then propose an enhanced secure scheme to eliminate these security flaws.
