EAGER: Secure Peer-to-peer Data Management

点对点（P2P）网络越来越受欢迎，部分原因是它们可以在不同的硬件和软件集合上实现，使它们的部署和维护相对便宜。网络基础设施还往往具有高度的容错性，并且带宽和其他计算资源往往在对等点之间得到很好的平衡，从而使网络高度健壮。在实践中，许多P2P网络仍然容易受到拒绝服务攻击，因为网络的同质性导致主机之间更大的相互依赖性。许多现有的P2P网络也存在严重的数据完整性漏洞，因为网络中的对等点很容易向其他对等点谎报他们所服务的数据。P2P用户期望的机密性通常有两种形式：数据保密策略禁止向低特权的对等体泄露高机密性的共享对象，而用户匿名策略禁止泄露用户？S私人信息。可信数据管理是为可信协作提供环境的关键一层。该团队将使用其安全的P2P基础设施和低级别安全执行机制，作为开发基于声誉的信任管理系统的基础，以强制执行任意访问控制。它们将为在点对点网络上托管的安全数据管理的设计和开发提供一个全面的解决方案，重点关注在考虑机密性、完整性和信任的这种环境中的查询处理。

Peer-to-peer (P2P) networks have increased in popularity partly because they can be implemented atop a diverse collection of hardware and software, making them relatively inexpensive to deploy and maintain. The network infrastructure also tends to be highly fault-tolerant, and bandwidth and other computational resources tend to be well balanced across peers, making the network highly robust. In practice, many P2P networks remain vulnerable to denial of service attacks because the homogeneity of the network results in greater interdependence among hosts. Many existing P2P networks also suffer from serious data integrity vulnerabilities because it is easy for peers in the network to lie to other peers about the data they serve. The confidentiality desired by P2P users typically comes in two forms: Data confidentiality policies prohibit the leaking of high confidentiality, shared objects to low-privileged peers, while user anonymity policies prohibit the divulging of a user?s private information. Trusted data management is a key layer in providing environments for trusted collaboration. The team will use their secure P2P infrastructure with low level security enforcement mechanisms as a basis for developing a reputation-based trust management system to enforce discretionary access control. They will provide a comprehensive solution for the design and development of secure data management hosted on a peer to peer network, focused on query processing in such an environment with considerations for confidentiality, integrity, and trust.