Introduction to Identity Federation
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Token expiration and renewal
After using the token, the application can at any time revoke the oAuth token. At that time, the token
will not be allowed anymore.
On the other hand, the application can extend the token validity period by requesting a new token. to
get it, the client application can use the renewal token received along the oAuth and Openid-connect
ones.
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https://confluence.soffid.com/display/SOF/Web+services+reference
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https://confluence.soffid.com/display/SOF/Connecting+Office+365
What is Identity Federation?
A federated identity in information technology is the means of linking a person's electronic identity and attributes, stored across multiple distinct identity management systems.
It is related to single sign-on (SSO), in which a user's single authentication ticket, or token, is trusted across multiple IT systems or even organizations. SSO is a subset of federated identity management, as it relates only to authentication and is understood on the level of technical interoperability and it would not be possible without some sort of federation.
With the identity federeation we get to separate the applications and, the login and get permissions process. Currently, there are two mainstream identity federation standards: SAML and OpenID-Connect.
SAML (Security Assertion Markup Language)
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Visit the SAML Chapter for more information.
OpenID-Connect
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Visit the OpenID-Connect Chapter for more information.
The main differences between SAML and OpenID-connect
- OpenID-connect uses simple form encoding or JSON rather than complex XML documents.
- OpenID-connect does not encrypt or sign requests or responses. Instead, it uses simple username/password authentication leveraging HTTPS transport security.
- OpenID-connect requires server to server communication to transfer security tokens. SAML allows this kind of communication, but does not need it.