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How to establish additional claims and tokens from external providers?
An ASP.NET Core app can establish additional claims and tokens from external authentication providers, such as Facebook, Google, Microsoft, and Twitter. Each provider reveals different information about users on its platform, but the pattern for receiving and transforming user data into additional claims is the same.
How to remove a claimtype from OpenID Connect?
ClaimActionCollection.Remove (String) removes all claim actions for the given ClaimType from the collection. ClaimActionCollectionMapExtensions.DeleteClaim (ClaimActionCollection, String) deletes a claim of the given ClaimType from the identity. DeleteClaim is primarily used with OpenID Connect (OIDC) to remove protocol-generated claims.
How to update claims when a user is signed in?
A similar approach is taken when claims change while a user is signed in but a backfill step isn’t required. To update a user’s claims, call the following on the user: UserManager.ReplaceClaimAsync on the user for claims stored in the identity database.
How to assign optional claims in Active Directory?
For example, Microsoft Azure Active Directory (AAD) permits you to assign optional claims to the app’s ID token in the app registration’s Token configuration blade. For more information, see How to: Provide optional claims to your app (Azure documentation).
How to add custom claims to Microsoft tokens?
Select additional claims to include in tokens for your application. Change the behavior of certain claims that the Microsoft identity platform returns in tokens. Add and access custom claims for your application. For the lists of standard claims, see the access token and id_token claims documentation.
By default, a user’s claims are stored in the authentication cookie. If the authentication cookie is too large, it can cause the app to fail because: The browser detects that the cookie header is too long. The overall size of the request is too large. If a large amount of user data is required for processing user requests:
How to check claims in ASP.NET Core?
Fortunately, you don’t have to go searching through that collection for the claims that you’re interested in. For example, checking for a user’s role is sufficiently common that there’s a special shortcut method for it: the IsInRole method.