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Security Models

In information security, models provide a way to formalize security policies. Such models can be abstract or intuitive (some are decidedly mathematical), but all are intended to provide an explicit set of rules that a computer can follow to implement the fundamental security concepts, processes, and procedures that make up a security policy. These models offer a way to deepen your understanding of how a computer operating system should be designed and developed to support a specific security policy.

A security model provides a way for designers to map abstract statements into a security policy that prescribes the algorithms and data structures necessary to build hardware and software. Thus, a security model gives software designers something against which to measure their design and implementation. That model, of course, must support each part of the security policy. In this way, developers can be sure their security implementation supports the security policy.


  

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