【摘要】 在频繁的跨组织层级化数据交互过程中,为提升和保障全局数据访问权限管控的一致性与安全性,分布式系统亟需统一的身份权限认证与授信体系。区块链为解决分布式系统中存在的问题,提供了一个潜在的解决方案。提出了一种基于区块链的多级身份跟踪与访问控制方案,通过构造具有访问控制的可追溯身份加密方案和联合时空证明的存储协议,构建系统的底层框架,证明基于区块链与访问控制的身份溯源存储系统是安全的、匿名的、可追踪的,并能够对存储访问进行有效控制。更多还原

【Abstract】 In the processes of frequent cross-organizational data interactions, in order to improve and ensure the consistency and security of global data access permission control, distributed systems urgently need system support of unified identity permission authentication and credit granting. Blockchain provides a potential solution for the serious social problems in a fully decentralized system. An identity-traceable storage system with access control based on blockchain is described. The bottom frame of the system is finished by constructing a multi-level identity-traceable encryption scheme with access control and a storage protocol called united spatio-temporal proof. The scheme is secure, anonymous, traceable and with access control.更多还原