Question

Explain the differences between identification, authentication, and authorization.

Answer 1

The differences between identification, authentication, and authorization.

Identification is the process of giving(confirming) some identity.

Example:

1. Taking hall ticket to enter into the exam hall.

        2.   Student ID card.

3. Username for any e-commerce website.

         In the above examples, the user is confirming his unique identity from others.

Authentication:

The process of giving proof of ones' identity to others in such a way that it impossible to copy.

It is also like identification but with certain strongness.

Example:

Password of the user.
Password of the user is known to others. Only the individual can access it. It is called Authentication.
Real -life scenario: In colleges, students give biometrics for their attendance.

Authorization:

It is given after the above both are verified.
The process of confirming what type of facilities an individual possesses once he is given identity is called Authorization.

In this, a person does not need to assert his identity.

The differences between identification, authentication, and authorization in short:

In general,

Identification needs when a user asks his identity   (Ex: username).

Authentication needs when a user wants to prove his identity. (Ex: password).

When the user proved his identity, he is authorized by giving access based on his identities.