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arXiv 2008.06536cs.CRcs.OS
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制作分布式移动应用程序SAFE:通过安全应用程序流实施在不可信应用程序上实施用户隐私策略

Making Distributed Mobile Applications SAFE: Enforcing User Privacy Policies on Untrusted Applications with Secure Application Flow Enforcement

Adriana Szekeres, Irene Zhang, Katelin Bailey, Isaac Ackerman, Haichen Shen, Franziska Roesner, Dan R. K. Ports, Arvind Krishnamurthy, Henry M. Levy

摘要:

当今的移动设备感知、收集和存储大量的个人信息,用户通过各种应用程序与家人和朋友共享这些信息。一旦用户允许应用程序访问他们的数据,他们必须隐含地信任应用程序正确地维护数据隐私。正如我们从经验和太频繁的新闻报道中所知道的那样,这种信任往往是错误的。虽然用户不信任应用程序,但他们信任自己的移动设备和操作系统。不幸的是,共享应用程序不仅限于移动客户端,还必须在云服务上运行,以便在用户之间共享数据。在本文中,我们利用用户对其移动操作系统的信任来审查云服务。为此,我们定义了一个新的安全应用程序流实施(SAFE)框架,该框架要求云服务证明一个系统堆栈,该堆栈将强制执行移动操作系统为用户数据提供的策略。我们实现了一个在未修改的移动应用程序上强制执行SAFE策略的移动操作系统,以及两个用于在不受信任的云服务上强制执行策略的系统。使用这些原型,我们证明,它是可以执行现有的用户隐私政策上未经修改的应用程序。

英文摘要:

Today's mobile devices sense, collect, and store huge amounts of personal information, which users share with family and friends through a wide range of applications. Once users give applications access to their data, they must implicitly trust that the apps correctly maintain data privacy. As we know from both experience and all-too-frequent press articles, that trust is often misplaced. While users do not trust applications, they do trust their mobile devices and operating systems. Unfortunately, sharing applications are not limited to mobile clients but must also run on cloud services to share data between users. In this paper, we leverage the trust that users have in their mobile OSes to vet cloud services. To do so, we define a new Secure Application Flow Enforcement (SAFE) framework, which requires cloud services to attest to a system stack that will enforce policies provided by the mobile OS for user data. We implement a mobile OS that enforces SAFE policies on unmodified mobile apps and two systems for enforcing policies on untrusted cloud services. Using these prototypes, we demonstrate that it is possible to enforce existing user privacy policies on unmodified applications.

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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