1. INTRODUCTION
1.1. History of Authorization System
The security of digital data has long been a concern of operating system designers. The first time-sharing systems in the early 1960s had password schemes as part of logging in, memory protection hardware, and access control lists on files. By 1970, the means to assure security and protection were considered fundamental to operating systems and were an important consideration in the design of OS kernels.
Authorization is the process of giving someone permission to do or have something. In multi-user computer systems, a system administrator defines for the system which users are allowed access to the system and what privileges of use (such as access to which file directories, hours of access, amount of allocated storage space, and so forth). Thus, authorization is sometimes seen as both the preliminary setting up of permissions by a system administrator and the actual checking of the permission values that have been set......
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Approximate Word Count: 6002
Approximate Pages: 24 (260 words per double-spaced page) |