| Summary: | 碩士 === 國立中興大學 === 應用數學系 === 87 === Along with the great progress of computer and communication technologies, distributed systems
are increasingly being used in commercial environments. Many companies develop highly integrated
enterprise networking solutions, which allow users on a LAN or intranet to communicate and share data
easily. However, the distribution requires the need for encryption over untrusted networks and remote
computers may not be fully trusted. Therefore, developing a mechanism to against unauthorized access
is urgent and very important. Access control services are used to protect computing and networking
resources from unauthorized access. Role-Based Access Control (RBAC) was proposed as an alternative to
traditional access control policies that attracts increasing attention, particularly for commercial applications.
In the past, some schemes that integrate access control with the user authentication have been proposed.
Unfortunately, there are still disadvantages in these schemes. Therefore, in this thesis, we propose a security
architecture and implement it to support role based access control for large-scale and multi-organizational
enterprise within a distributed network over a public channel. We design the system prototype and simulate
the process of access control mechanism integrated with user authentication. Some related topics are also
discussed in this thesis.
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