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Decentralized Delimited Release

机译:分散定界发布

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Decentralization is a major challenge for secure computing. In a decentralized setting, principals are free to distrust each other. The key challenge is to provide support for expressing and enforcing expressive decentralized policies. This paper focuses on declassification policies, i.e., policies for intended information release. We propose a decentralized language-independent framework for expressing what information can be released. The framework enables combination of data owned by different principals without compromising their respective security policies. A key feature is that information release is permitted only when the owners of the data agree on releasing it. We instantiate the framework for a simple imperative language to show how the decentralized declassification policies can be enforced by a runtime monitor and discuss a prototype that secures programs by inlining the monitor in the code.
机译:分散化是安全计算的主要挑战。在分散的环境中,校长可以自由互不信任。关键的挑战是为表达和执行表达性权力下放的政策提供支持。本文着重于解密策略,即预期的信息发布策略。我们提出了一个与语言无关的分散框架,用于表示可以发布哪些信息。该框架可以合并不同主体拥有的数据,而不会损害其各自的安全策略。一个关键功能是仅当数据所有者同意发布信息时,才允许发布信息。我们实例化了一种简单的命令式语言的框架,以显示运行时监视器如何实施去中心化的解密策略,并讨论了通过将监视器嵌入代码中来保护程序的原型。

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