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OpenID Connect Federation Async

Overview#

OpenID Connect Federation Async is a Draft specification defines a way for an OpenID Connect Client and an OpenID Connect Provider to establish trust and communicate based upon issued statements from a trusted Third-party.

OpenID Connect 1.0 is a simple identity layer on top of the OAuth 2.0 RFC 6749 protocol. The OpenID Connect Core 1.0 allows preconfigured entities RPs and OpenID Connect Providers to interoperate. The OpenID Connect Discovery adds the ability for the Relying Party to aided by the End-User discover the configuration of any OpenID Connect Provider of the users choice. When the Relying Party has the configuration from the Discovery response, it may use the OpenID Connect Dynamic Client Registration to register the Relying Party configuration by the relevant OpenID Connect Provider before sending the authentication request. Together these standards fully support the need for dynamically establishing interop between a large set of RPs and OpenID Connect Providers, however neither of these standards include any Trust Framework that the entities might want to use as a base for deciding whether or not to establish a trusted relationship by either issuing or consuming information about authenticated users. This specification defines such a Trust Framework.

In addition to a Trust Framework, this specification also defines a way for a Relying Party to announce its configuration through the use of .Well-known location, similar to that of the OpenID Connect Provider. This implies that a Relying Party uses the same configuration for all OpenID Connect Providers. But it also results in far less state needs to be kept for both OpenID Connect Providers and Relying Parties. The fact that Relying Party and OpenID Connect Provider both have global configuration means that they cannot share secrets, hence the need for the Relying Party to only rely on Asymmetric Key Cryptography for authentication

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