私有数据系统支持由可执行编排管理的自主存储
Private Data System Enabling Self-Sovereign Storage Managed by Executable Choreographies
摘要：
随着互联网使用的增加，政府和大公司存储和共享大量个人数据的方式没有留下任何透明的空间。当用户需要实现一个简单的任务，如申请大学或驾驶执照时，他需要访问许多机构和组织，从而在许多地方留下了大量的私人数据。使用互联网时也是如此。集中式架构提出的这些隐私问题以及无服务器应用程序领域的最新发展需要用户控制下的去中心化私有数据层。我们介绍了私有数据系统（PDS），这是一种分布式方法，可以实现私有数据的自主存储和共享。该系统由分布在整个互联网上的节点组成，管理本地键值数据库。节点之间的通信是通过可执行的编排来实现的，当在具有不同法规的不同组织之间执行时，这些编排能够防止信息泄漏。用户可以完全控制自己的私人数据，并能够随时共享和撤销对组织的访问。更重要的是，由于系统设计，更新会立即传播到所有可以访问数据的各方。具体而言，处理机构可以检索和处理共享信息，但在任何情况下都不允许长期存储。PDS提供了一种替代系统，旨在通过区块链启发的技术确保特定类型数据的自我主权，但面临各种问题，例如性能低下。这两种方法都提出了一个分布式数据库，但具有不同的特点。虽然基于区块链的系统是为了解决共识问题而建立的，但PDS的目的是解决隐私法、规则和原则所提出的自我主权问题。
英文摘要：
With the increased use of Internet, governments and large companies store and share massive amounts of personal data in such a way that leaves no space for transparency. When a user needs to achieve a simple task like applying for college or a driving license, he needs to visit a lot of institutions and organizations, thus leaving a lot of private data in many places. The same happens when using the Internet. These privacy issues raised by the centralized architectures along with the recent developments in the area of serverless applications demand a decentralized private data layer under user control. We introduce the Private Data System (PDS), a distributed approach which enables self-sovereign storage and sharing of private data. The system is composed of nodes spread across the entire Internet managing local key-value databases. The communication between nodes is achieved through executable choreographies, which are capable of preventing information leakage when executing across different organizations with different regulations in place. The user has full control over his private data and is able to share and revoke access to organizations at any time. Even more, the updates are propagated instantly to all the parties which have access to the data thanks to the system design. Specifically, the processing organizations may retrieve and process the shared information, but are not allowed under any circumstances to store it on long term. PDS offers an alternative to systems that aim to ensure self-sovereignty of specific types of data through blockchain inspired techniques but face various problems, such as low performance. Both approaches propose a distributed database, but with different characteristics. While the blockchain-based systems are built to solve consensus problems, PDS's purpose is to solve the self-sovereignty aspects raised by the privacy laws, rules and principles.
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