A new identity authentication scheme of single sign on for multi-database

At present, multi-database identity authentication is mostly based on centralized global user management mechanism. In this paper, we analyze the defects of the current identity authentication in multi-database and propose a new single sign on for multi-database identity authentication based on the idea of database union domain. Compared with the traditional methods of authentication, the scheme adopts decentralized authentication mode which without centralized management, so it can avoid single point failure and single point overload, and it can also prevent password theft attack, replay attack and other various attacks. Through the case analysis, we know that the new scheme can improve the safety of the multi-database system.