Identity Provider Types: Internal


There are two types of "Internal IDP":

The first one is the Identity Provider that is configured automatically when IDHub is installed. This is the IDHUB_IDP_UP.  This IDP will look up the subject in the user repository (database).  The settings of this IDP cannot be changed, with the exception of "Page Setting"

Other types of Internal IDP will delegate the Authentication to a workflow.


Field Description
Display Name User specified name of the Identity Provider
URL Not used, for informative use only.
Description User specified description of the Identity Provider
Type "Internal"
Subject Defines which attribute is used to identify the Subject
Workflow Select the workflow that will handle the user authentication.
This field will be ignored on the built-in IDP (IDHUB_IDP_UP)
Page Setting Only for the built-in IDP (IDHUB_IDP_UP). This determines the page that is presented to the user to log into the IDHub IDP.
  • Location: the URL (relative path) on which the webpage is available
  • Template: Select a template from the available templates.  The default template (cannot be changed) is at least available.

Note: Be sure the location or template is functional, or you will not be able to log back into IDHub.

This field is not used by other internal IDP types.

Workflow integration

The internal IDP needs a workflow. That workflow is called in two occasions:

  • In case of an authentication request 
  • When the user posts his credentials. 

Below is explained how you can make that workflow. 

The input of the workflow is a  SimpleValueRequest  which contains the following parameters: 

  • type: "authenticationRequest" or "userInputHandlingRequest"
  • idpCode
  • relayState
  • authenticationContext
  • spRequest
  • session
  • headers
  • cookies

In case of a userInputHandlingRequest the input also contains the query parameters.

In case of a backchannel request the parameters field contains the parameters "username" and "password".

The response must be a SimpleValueResponse. The expected fields are:

  • type: "assertion", "page" or "error"
  • value

The expected structure for the "value" field depends on the "type" field.

As you can see the internal idp workflow can give three type of responses. Here we will discuss them all and explain the corresponding expected structure for the "value" field.


You have the possibility to respond with an assertion. In this case the "value" field needs to contain the following fields:

  • subject
  • authenticationContext
  • attributes

The attributes field must be an object with as keys the attribute names and as values the corresponding attribute values in an array.


You have the possibility to respond with a page. This would typically be a login page or an error page. In this case the "value" field needs to contain the field:

  • status

The following fields are optional (but you will probably want to declare at least one of them because a status on its own won't be very useful):

  • headers
  • cookies
  • body

All of these fields, if declared, must be an object with string keys and string values.

If you create a login page, the credentials must be posted to /idhub/authenticate/internalidp. The parameter "idpCode" is also required. If you want the parameters "relayState" and "authenticationContext" to be present in the userInputHandlingRequest, you will also need to include them in this post.


You have the possibility to respond with an error code known by the system. The error handling functionality of the system will handle the error in the same way it handles the same kind of error encountered with another IDP type (e.g. SAML IDP, OAUTH IDP).

Internal error code SAML error code Description
AUTHN_FAILED AUTHN_FAILED The responding provider was unable to successfully authenticate the principal.
CERTIFICATE_NOT_FOUND CERTIFICATE_NOT_FOUND A required certificate was not found
INSTALL_NOT_OK INSTALL_NOK Installation is not completed, complete installation and retry
INVALID_ATTR_NAME_OR_VALUE urn:oasis:names:tc:SAML:2.0:status:InvalidAttrNameOrValue Unexpected or invalid content was encountered within a <saml:Attribute> or <saml:AttributeValue> element.
INVALID_NAME_ID_POLICY urn:oasis:names:tc:SAML:2.0:status:InvalidNameIDPolicy The responding provider cannot or will not support the requested name identifier policy.
INVALID_PARAMETERS INVALID_PARAMETERS There are some parameters with invalid values in the request.
MESSAGE_VALIDATION_FAILED MESSAGE_VALIDATION_FAILED The parsing of a third party message has failed.
MISSING_PARAMETERS MISSING_PARAMETERS There are some parameters missing in the request.
NO_AUTHN_CONTEXT NO_AUTHN_CONTEXT The specified authentication context requirements cannot be met by the responder.
NO_AVAILABLE_IDP NO_IDPS Used by an intermediary to indicate that none of the supported identity provider <Loc> elements in an <IDPList> can be resolved or that none of the supported identity providers are available.
NO_PASSIVE urn:oasis:names:tc:SAML:2.0:status:NoPassive Indicates that the responding provider cannot authenticate the principal passively, as has been requested.
NO_PROXY_SP NO_PROXY_SP No Gateway Service Provider found
NO_SUBJECT SP_SUBJECT_NOT_FOUND here is no value present for the attribute used as subject for the Service Provider you are trying to access
NO_SUPPORTED_IDP urn:oasis:names:tc:SAML:2.0:status:NoSupportedIDP Used by an intermediary to indicate that none of the identity providers in an <IDPList> are supported by the intermediary.
PROXY_COUNT_EXCEEDED urn:oasis:names:tc:SAML:2.0:status:ProxyCountExceeded Indicates that a responding provider cannot authenticate the principal directly and is not permitted to proxy the request further.
REQUEST_DENIED REQUEST_DENIED The SAML responder or SAML authority is able to process the request but has chosen not to respond. This status code MAY be used when there is concern about the security context of the request message or the sequence of request messages received from a particular requester.
REQUEST_UNSUPPORTED urn:oasis:names:tc:SAML:2.0:status:RequestUnsupported The SAML responder or SAML authority does not support the request.
REQUEST_VERSION_DEPRECATED urn:oasis:names:tc:SAML:2.0:status:RequestVersionDeprecated The SAML responder cannot process any requests with the protocol version specified in the request.
REQUEST_VERSION_TOO_HIGH urn:oasis:names:tc:SAML:2.0:status:RequestVersionTooHigh The SAML responder cannot process the request because the protocol version specified in the request message is a major upgrade from the highest protocol version supported by the responder.
REQUEST_VERSION_TOO_LOW urn:oasis:names:tc:SAML:2.0:status:RequestVersionTooLow The SAML responder cannot process the request because the protocol version specified in the request message is too low.
RESOURCE_NOT_RECOGNIZED urn:oasis:names:tc:SAML:2.0:status:ResourceNotRecognized The resource value provided in the request message is invalid or unrecognized.
TOO_MANY_RESPONSES urn:oasis:names:tc:SAML:2.0:status:TooManyResponses The response message would contain more elements than the SAML responder is able to return.
UNKNOWN_ATTR_PROFILE urn:oasis:names:tc:SAML:2.0:status:UnknownAttrProfile An entity that has no knowledge of a particular attribute profile has been presented with an attribute drawn from that profile.
UNKNOWN_PRINCIPAL urn:oasis:names:tc:SAML:2.0:status:UnknownPrincipal The responding provider does not recognize the principal specified or implied by the request.
UNKNOWN_ARTIFACT_ISSUER UNKNOWN_ARTIFACT_ISSUER The issuer of a SAML artifact response could not be identified.
UNKNOWN_SP UNKNOWN_SP The Service Provider is not known to us.
UNSUPPORTED_BINDING urn:oasis:names:tc:SAML:2.0:status:UnsupportedBinding The SAML responder cannot properly fulfill the request using the protocol binding specified in the request.
WRONG_AUTHENTICATION_METHOD WRONG_AUTHENTICATION_METHOD There was a problem finding the authentication method
WRONG_USER IDP_WRONG_USER Mismatch between logged on user and incoming user
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