Modeling Key Compromise Impersonation Attacks on Group Key Exchange Protocols

被引：0

作者：

Gorantla, M. Choudary ^{[1
]}

Boyd, Colin ^{[1
]}

Gonzalez Nieto, Juan Manuel ^{[1
]}

机构：

[1] Queensland Univ Technol, Fac IT, Informat Secur Inst, Brisbane, Qld 4001, Australia

来源：

PUBLIC KEY CRYPTOGRAPHY-PKC 2009, PROCEEDINGS | 2009年 / 5443卷

关键词：

Group Key Exchange; Key Compromise Impersonation; Insider Attacks;

D O I：

暂无

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

A key exchange protocol allows a set of parties to agree upon a secret session key over a public network. Two-party key exchange (2PKE) protocols have been rigorously analyzed under various models considering different adversarial actions. However, the analysis of group key exchange (GKE) protocols has, not been as extensive as that of 2PKE protocols. Particularly, the security attribute of key compromise impersonation (KCI) resilience has so far been ignored for the case of GKE protocols. We first model the security of GKE protocols addressing KCI attacks by both outsider and insider adversaries. We then show that a few existing protocols are not secure even against outsider KCI attacks. The attacks oil these protocols demonstrate the necessity of considering KCI resilience. Finally, we give a new proof of security for all existing GKE protocol under the revised model assuming random oracles.

引用

页码：105 / 123

页数：19

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