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OpenID Implementation
This document contains technical information for publishers and integrators about OpenID Connect (OIDC) protocol.
The Authorization Request
When a web application needs to authenticate a user, it must direct the browser to the URL of the authorization_endpoint, specified in the application metadata. This request is also referred to as the authorization request.
Error Responses
Authorization responses are also sent in case of error.

OpenID Implementation
This document contains technical information for publishers and integrators about OpenID Connect (OIDC) protocol.
- Overview of CONNECT
  CONNECT is an Identity Management as a Service (IDaaS) platform created and managed by Wiley Partner Solutions that enables publishers to securely sign in users to their applications, using the OpenID Connect (OIDC) protocol.
- Overview of OpenID CONNECT
  The OpenID Connect (OIDC) protocol is an extension of OAuth 2.0 for use as an authentication protocol.
- Client Application Configuration
  A client application represents an application (typically a web application) of a publisher that provides services to authenticated users. Each application always belongs to one CONNECT tenant (customer). Each customer can have multiple applications.
- Metadata Document
  The OpenID Connect service is a metadata document that contains most of the information required for a client application to perform the authorization flow. This includes information such as the URLs to use and the location of the service's public signing keys.
- The Authorization Request
  When a web application needs to authenticate a user, it must direct the browser to the URL of the authorization_endpoint, specified in the application metadata. This request is also referred to as the authorization request.
  - Authorization Request Parameters
    The following parameters are included in an authorization request:
  - Successful Response
    A successful response includes an id_token, a code, or both, depending on the value of the response_type parameter.
  - Error Responses
    Authorization responses are also sent in case of error.
  - List of Authorization Request Errors
    The following error messages appear when an authorization request fails:
- The id_token
  The id_token can be provided either in JSON format or as a signed JWT (configurable on the CONNECT side according to the client application requirements) and includes basic user profile data that allows the authentication of a user on the client application.
- Automatic Login
  The user authentication status on CONNECT can be checked by an application by issuing a "silent" authorization request.
- Retrieving User Data
  Some applications not only need to sign the user in, but also access a web service on behalf of that user using OAuth. An example of this is a service that provides additional user data than those included in the id_token.
- Scopes
- Logout
- Back Channels APIs

Error Responses

Authorization responses are also sent in case of error.

In error case, the redirect_uri includes the following parameters:

Parameter Name	Description
error	A string that can be used to classify the error type.
error_description	An error message text that can help a developer to identify the cause of the authentication error.

For example:

GET  302 Found 
Location: https://www.appname.com/oidc/cbk? 
             error=<error code> 
             &error_description=error+message