An Distributed CA System : Identity authentication system in transnational railway transportation based on blockchain

With the introduction of "One Belt, One Road" initiative, transnational railway container transportation has played an increasingly important role in the field of international trade and logistics. The transnational railway container transportation business involves multiple entities at home and abroad. It is difficult for decentralized transportation entities to achieve mutual trust, and it is difficult for document data to flow and share. The blockchain-based transnational railway transportation data exchange system combines the immutable and traceable characteristics of blockchain technology, and uses blockchain smart contracts and consensus mechanisms to propose a specific technical route for the sharing and exchange of document data based on blockchain. Aiming at the issue of identity authentication among the subjects, this paper proposes a distributed CA scheme based on blockchain to realize mutual recognition of transnational identities, and ensure the sharing of transnational document data and the protection of privacy and security.