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arXiv 2012.05749cs.CR
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触发动作系统中的数据保密

Data Privacy in Trigger-Action Systems

Yunang Chen, Amrita Roy Chowdhury, Ruizhe Wang, Andrei Sabelfeld, Rahul Chatterjee, Earlence Fernandes

摘要:

触发操作平台(TAP)允许用户连接独立的基于Web的服务或物联网服务,以实现有用的自动化。它们提供了一个简单的界面,可帮助最终用户创建在不同的Internet服务之间传递数据的查询-计算-操作规则。不幸的是,TAP引入了大规模的安全风险:如果它们被攻破,攻击者将获得数百万用户的敏感数据。为了避免这种风险,我们提出了eTAP,这是一个隐私增强的加密操作平台,它可以执行加密计算操作规则,而无需以明文形式访问用户的私人数据,也无需了解任何有关计算结果的信息。我们使用乱码电路作为一个基本的,并利用独特的结构的密码计算动作规则,使他们的实用。我们正式声明并证明我们协议的安全保证。我们原型化了eTAP,它支持流行的商业TAP(如IFTTT和Zapier)上最常用的操作。具体来说,它支持对私有触发器数据的布尔、算术和字符串操作,可以运行IFTTT用户100%的前500条规则和Zapier上93.4%的所有公共可用规则。基于现有的10个规则,行使各种各样的操作,我们表明,eTAP有一个温和的性能影响:平均规则执行延迟增加70毫秒(55%),吞吐量减少59%。

英文摘要:

Trigger-action platforms (TAPs) allow users to connect independent web-based or IoT services to achieve useful automation. They provide a simple interface that helps end-users create trigger-compute-action rules that pass data between disparate Internet services. Unfortunately, TAPs introduce a large-scale security risk: if they are compromised, attackers will gain access to sensitive data for millions of users. To avoid this risk, we propose eTAP, a privacy-enhancing trigger-action platform that executes trigger-compute-action rules without accessing users' private data in plaintext or learning anything about the results of the computation. We use garbled circuits as a primitive, and leverage the unique structure of trigger-compute-action rules to make them practical. We formally state and prove the security guarantees of our protocols. We prototyped eTAP, which supports the most commonly used operations on popular commercial TAPs like IFTTT and Zapier. Specifically, it supports Boolean, arithmetic, and string operations on private trigger data and can run 100% of the top-500 rules of IFTTT users and 93.4% of all publicly-available rules on Zapier. Based on ten existing rules that exercise a wide variety of operations, we show that eTAP has a modest performance impact: on average rule execution latency increases by 70 ms (55%) and throughput reduces by 59%.

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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