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The full specification for OIDC is available on the OpenID Foundation’s website at OpenID Connect Core 1.0 specification.
End-user authentication
The authentication flow of OIDC is most easily compared to logging in with a
Google or Facebook account. The end-user is redirect to a page of a trusted party and is then
asked to provide credentials and will possibly see a consent screen to allow sharing of
personal data with the calling party. It is to the end-user to either disclose the data or not.
OIDC will work in the same manner.
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