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Computer Science
Posted 10 months ago
Compare the Attribute
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based access control ABAC model with Discretionary access control DAC and Role
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based access control RBAC models and how it is different.
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Answer from Sia
Posted 10 months ago
Comparison of ABAC, DAC, and RBAC
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Attribute-Based Access Control (ABAC): ABAC uses dynamic policies that can evaluate a combination of attributes (user, resource, environment) to make access decisions. These attributes can be anything relevant, such as the time of access, the location of the user, or the sensitivity of the data
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Discretionary Access Control (DAC): DAC allows the owner of the resource to decide who can access it. Access to resources is typically controlled by the use of Access Control Lists (ACLs), where the owner specifies who has what type of access
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Role-Based Access Control (RBAC): RBAC assigns permissions to roles rather than to individual users. Users are then assigned to roles, thereby acquiring the permissions associated with those roles. This simplifies management by grouping permissions into roles that correspond to job functions
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Differences:
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ABAC is more flexible and context-aware than DAC and RBAC, as it can consider a wide range of attributes and environmental conditions
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DAC is considered less secure than ABAC and RBAC because it allows users to control access to their own resources, which can lead to a lack of centralized control
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RBAC is less granular than ABAC because it does not take into account the context of access, focusing instead on predefined roles
In summary, ABAC offers a more granular and context-aware approach to access control compared to DAC and RBAC, which are more rigid and less dynamic. DAC allows resource owners to manage access, potentially leading to security risks, while RBAC simplifies permission management by associating them with roles rather than individuals.
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