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arXiv 2005.05376cs.CR
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可证明不安全的组身份验证:并非所有的安全证明都是他们声称的那样

Provably insecure group authentication: Not all security proofs are what they claim to be

Chris J Mitchell

摘要:

在ICICS 2019会议上发表的一篇论文描述了所谓的“异步通信模型中可证明安全的组认证[协议]”。我们在这里表明,情况远非如此,因为该协议受到严重的攻击。为了试图解释这个令人不安的案例,ICICS 2019协议所基于的早期(2013)方案也被检查并发现具有更严重的缺陷-后一种方案以前已知会受到攻击,但不像这里显示的那样根本。对2013年和2019年论文中提供的安全性定理的研究表明,在这两种情况下,它们都不完全是乍一看的那样;也简要讨论了由此提出的问题。

英文摘要:

A paper presented at the ICICS 2019 conference describes what is claimed to be a `provably secure group authentication [protocol] in the asynchronous communication model'. We show here that this is far from being the case, as the protocol is subject to serious attacks. To try to explain this troubling case, an earlier (2013) scheme on which the ICICS 2019 protocol is based was also examined and found to possess even more severe flaws - this latter scheme was previously known to be subject to attack, but not in quite as fundamental a way as is shown here. Examination of the security theorems provided in both the 2013 and 2019 papers reveals that in neither case are they exactly what they seem to be at first sight; the issues raised by this are also briefly discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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