In the era of big data, data is playing an increasingly important role in scientific study, and reliable storage and secure sharing of data have become a research hotspot. At present, centralized solutions based on data centers and cloud storage have problems with data-right confirmation and center trust. A large number of decentralized storage solutions are public systems, in which blockchain technology, as a tool for value exchange, does not solve the problems of data verification and system supervision. We propose a peer-to-peer storage system with identity access, which achieves data validation, cross-organizational data retrieval, trusted authorization, and sharing based on the consortium blockchain. Our solution proposes a peer-to-peer data storage scheme based on the consortium blockchain and a set of identity authentication mechanisms compatible with the consortium blockchain. Based on this, we propose a blockchain-based permission control scheme and a set of retrieval, authorization, and sharing processes. Finally, we implemented and tested the system to prove the feasibility of the scheme.

大数据时代，数据在科学研究中发挥着越来越重要的作用，数据的可靠存储和安全共享成为研究热点。目前，基于数据中心和云存储的中心化解决方案存在数据确权和中心信任的问题。大量的去中心化存储解决方案是公共系统，其中区块链技术作为价值交换的工具，并没有解决数据验证和系统监管的问题。我们提出了一个具有身份访问的点对点存储系统，它基于联盟区块链实现了数据验证、跨组织数据检索、可信授权和共享。我们的解决方案提出了一种基于联盟链的点对点数据存储方案，以及一套兼容联盟链的身份认证机制。基于此，我们提出了基于区块链的权限控制方案和一套检索、授权和共享流程。最后，我们对系统进行了实施和测试，证明了方案的可行性。