The OpenID Connect Protocol

The IATec Authentication uses OpenID Connect.

What is OpenID Connect?

OpenID Connect (OIDC) is an authentication protocol, based on the OAuth 2.0 family of specifications. It uses simple JSON identity tokens (JWT) delivered via the OAuth 2.0 protocol.

While OAuth 2.0 is about resource access and sharing, OIDC is all about user authentication. Its purpose is to give you one login for multiple sites. Each time you need to log in to a website using OIDC, you are redirected to your OpenID site where you login, and then taken back to the website. For example, if you chose to sign in to Auth0 using your Google account then you used OIDC. Once you successfully authenticate with Google and authorize Auth0 to access your information, Google will send back to Auth0 information about the user and the authentication performed. This information is returned in a JSON Web Token (JWT) called an ID Token.

(source: Auth0)