TC: Small: Distributed Privacy-Preserving Policy Reconciliation

为了实现不同当事方之间的协作，合作伙伴有必要就管理其互动的政策规则达成协议。虽然最先进的机制将使各方能够协调他们的政策，但今天的政策协调议定书有两个主要缺陷。首先，它们侵犯了隐私，因为至少有一方当事人被要求在和解过程中披露其所有信息。其次，它们普遍缺乏公平性，即当事人的偏好得不到承认。这项研究旨在开发新的技术，使私人和公平的政策协调。这项研究的好处远远超出了政策协调本身。事实上，预计政策协调将在管理和保护基础设施和程序方面发挥越来越重要的作用，从网上预约等日常活动到加强当今移动电话基础设施的互操作，再到未来互联网的架构。

In order to enable collaboration between different parties it is necessary that the partners reach an agreement on the policy rules that will govern their interaction. While state-of-the-art mechanisms will allow the parties to reconcile their polices, today's policy reconciliation protocols have two main shortcomings. First, they violate privacy since at least one of the parties is required to discloses all its information during the reconciliation process. Second, they generally lack fairness, i.e., the parties' preferences are not recognized. This research is geared to develop novel techniques that enable both private and fair policy reconciliation.The benefits of this research go far beyond the field of policy reconciliation itself. In fact, policy reconciliation is expected to play an increasingly important role in managing and securing infrastructures and procedures, ranging from day-to-day activities such as scheduling an appointment online, to enhancing interoperation in today's cell phone infrastructure, to the architecture of the Future Internet.