Security Analysis of Joint Group Key Agreement Protocol(<Special Section>Information Theory and Its Applications)
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概要
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In a secure group communication, a group key agreement is to provide a secret key exchange among a group of users. When a new user joins the group, a new group key will be established. In this paper, we analyse Horng's joint protocol and show that this protocol does not provide backward secrecy. This means that a new joining user is able to discover the previous group key used by the previous group member.
- 社団法人電子情報通信学会の論文
- 2007-09-01
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