OpenID Connect 1.0 is a simple identity layer on top of the OAuth 2.0 protocol. It enables Clients to verify the identity of the end user based on the authentication performed by an Authorization Server, as well as to obtain basic profile information about the end user in an interoperable and REST-like manner. This specification defines the OpenID Connect Core functionality: authentication built on top of OAuth 2.0 and the use of claims to communicate information about the end user. It also describes the security and privacy considerations for using OpenID Connect
