Take-Grant Protection Model
The Take-Grant Protection Model is a theoretical model for studying the security properties of computer systems. It is a directed graph model that represents the flow of access rights between subjects and objects. Each node in the graph represents either a subject or an object, and an edge between nodes represents an access right. The model uses four primitive operations: 'take,' which allows a subject to obtain an access right from another subject; 'grant,' which allows a subject to give an access right to another subject; 'create,' which allows a subject to create a new object or access right; and 'remove,' which allows a subject to delete an access right edge. By analyzing the possible sequences of operations and their effects on the access rights graph, the Take-Grant Protection Model could allow security administrators to evaluate the security properties of a system and determine whether it is vulnerable to unauthorized access or unprotected information flow.
Guide: Understanding the Take-Grant Protection Model in CISSP
The Take-Grant Protection Model is an important part of the CISSP examination. It serves as a formal model used in computer security to establish or disprove the safety of a given system
In the context of CISSP, understanding the Take-Grant Protection Model is crucial as it can be a point of focus in the examination. This model helps understand how permissions are granted or revoked within a system, providing a valuable basis for understanding access control mechanisms
The Take-Grant Protection Model, in its essence, is a directive graph model that focuses on rights that subjects can 'take' or 'grant' other subjects. It contains four basic operations: create (a subject can create an object), remove (a subject can delete an object), take (a subject can take a right over an object), and grant (a subject can grant a right over an object to another.
Answering questions about this model in the examination requires a solid understanding of how it works.
Exam Tips: Answering Questions on Take-Grant Protection Model
- Focus on understanding the principles of how the model operates, such as how permissions and rights are granted or taken within a system.
- Make sure you are familiar with words such as subject, object, take, grant, create, and remove as they are often used in questions relating to the model.
- Being able to visualize or draw the directive graph can be of immense help when looking to understand potential question scenarios.
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