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Erschienen in:
2005 | OriginalPaper | Buchkapitel
Insider Impersonation-MIM Attack to Tripartite Key Agreement Scheme and an Efficient Protocol for Multiple Keys
verfasst von : Lihua Wang, Takeshi Okamoto, Tsuyoshi Takagi, Eiji Okamoto
Erschienen in: Computational Intelligence and Security
Verlag: Springer Berlin Heidelberg
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In this paper, we introduce the definition of
insiderimpersonation
-
MIM attack
for tripartite key agreement schemes and show that almost all of the proposed schemes are not secure under this attack. We present a new protocol which is much more efficient than the existential secure protocol [13] in terms of computational efficiency and transmitted data size. Moreover, our protocol is the first scheme for
multiple keys
which means that not only a large number of keys but also various kinds of keys can be generated by applying our scheme.