Authentication vs Authorization

Authentication vs Authorization
Understanding the difference between Authentication vs Authorization

The terms Authorization and Authentication are used frequently and interchangeably in the field of Cybersecurity. To ensure that the security of your company is strong, it is crucial to recognize the differences between these two terms as they are not the same.

Verifying the identity of a user, device, or system is the procedure of authentication. It serves as your system's first line of defense against unauthorized entry to your data and systems. When a user tries to log in to a system, the authentication procedure verifies their identity by requesting some kind of identification, like a username and password, biometric information, or a smart card.

Authentication Methods

Any security strategy must include authentication because it guarantees that only authorized users have access to sensitive information or systems. However, authentication by itself is insufficient to thwart unauthorized entry. Here, permission enters the picture.

Password-based authentication: The most popular type of authentication, password-based authentication requires a user to input both a username and password in order to access a system.

Biometric identification: A technique for authentication that identifies a person by using biological traits like fingerprints, facial recognition, or iris scans.

2-Factor authentication: A technique for securing entry to a system that asks users for two forms of identification, such as a password and security pin or OTP.

Multi-factor authentication: An improved and more reliable technique for securing entry to a system that asks users for two or more forms of identification, such as a password and a smart card.

Authentication through single sign-on (SSO): A technique that enables users to log in to numerous systems with a unique set of credentials.

Token-based authentication: Users can confirm their identity using the token-based authentication protocol, and in exchange, they get a special access token. Authorized codes function similarly to a ticket that has been validated. As long as the token is active, the individual has access. The token expires when the user signs out or closes an application.

Authorization Methods

According to the user's identity and privilege level, authorization is the process of approving or rejecting access to a specific resource, system, or data. What activities a user is permitted to take within the system after authentication is determined by authorization.

RBAC: RBAC is a technique that is frequently used in many companies to control access to resources. Instead of giving permissions to every user separately, it enables the effective management of permissions by giving roles to users. For organizations that must manage a big number of users and resources, this approach works well.

Open ID connects: Without having to establish new passwords, OpenID enables you to sign in to numerous websites using an existing account. Although a user's identification can be confirmed by a website without revealing their password, the password is still required for encryption.

SAML: SAML is a technology that allows different web services to talk to each other securely, so that users can access multiple web services using a single set of login credentials. Single sign-on is made possible by the open standard for identification known as Security Assertion Markup Language (SAML) (SSO).

OAuth: OAuth is a system for authorization that is frequently used to let third-party applications access user data or resources without requiring users to give those applications their login information. This approach is crucial for keeping user privacy and enabling secure access to user data.

JSON Web Token: Web applications frequently use JSON Web Tokens (JWTs), a type of token-based authentication and authorization technique. Information is safely transmitted between parties using JWTs, which are condensed, digitally signed JSON objects. JWTs are frequently used to transmit user-specific data between a web service and an API as well as to authenticate users.


In conclusion, despite the fact that the terms authentication and authorization are frequently used synonymously, they are not the same. Verifying a user's identity is known as authentication, and giving or denying access based on that identity is known as authorization. Any cybersecurity plan must include both authentication and authorization, and both should be used in tandem to guarantee the security of your organization's systems and data.