Difference Between Authentication and Authorization

Authentication and Authorization Difference

The similarity between authentication and authorization is that Authentication is the process of verifying who you are. When you log on to a PC with a user name and password you are authenticating. Authorization is the process of verifying that you have access to something. Gaining access to a resource (e.g. directory on a hard disk) because the permissions configured on it allow you access is authorization.

In software, Authentication is validating that an entity is who or what it claims to be. Authorization is validating that a user can perform a given action.

Comparison Char

Authorization AuthenticationAuthorization
Authentication is providing integrity control and security to the data.It is protecting the data to ensure privacy and access control of data. Authorization is giving
access to authorized users
Authentication is the process of verifying who
you are.
Authorization is the process of verifies what
you are authorized to do or not to do.
Logging on to a PC with a username and password is authentication.Accessing a file from hard disk is authorization because the permissions are given to you to
access that file allows you access it that is authorization.
Authentication usually requires a username and a passwordAuthentication factors required for authorization may vary, depending on the security level.


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