| In the field of computer networks, more and more researchers pay close attention to how to guarantee the determinacy and security of identity authentication. Thorium basedMolten Salt Reactor design supercomputing platform, also known simply as TMSR supercomputing platform, is a computer cluster under construction in Shanghai Institute of Applied Physics, Chinese Academy of Sciences. The platform is utilized to conduct physical computing with its high performance. The dissertation focuses on the unified identity authentication system of the TMSR supercomputing platform.First of all, the overall design was conducted with respect to the requirements to the unified identity authentication system in TMSR supercomputing platform. The designed system meets the requirements, which cover4aspects:entirety, database, security and usability.Secondly, the distributed unified identity authentication system was implemented based on OpenLDAP software. Servers and clients were installed and configured in the environment of TMSR supercomputing platform. All core functions of the distributed unified identity authentication system were realized, including database creation, partition of storage architecture, access control and replication among LDAP servers. Tests show that the system is secure, stable and reliable.Thirdly, Kerberos authentication mechanism was improved in the matters of password reliance, timing stamp synchronization and secret key storage. After the improvement, the original limitation of the mechanism was overcome, and the authentication process became safer and more reliable.The unified identity authentication system in TMSR supercomputing platform was researched, developed and implemented in the dissertation. All functions and specifications meet the requirements of the system. The research practice could also provide method reference of unified identity authentication for other distributed computing platform with large scale and high performance. |
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