[keycloak-user] When should auth_time claim be updated?

[Marek Posolda]

On 21/07/17 07:57, Matt Evans wrote:
> Hi
>
> We are working with keycloak v3.2.0  and are using 'prompt=login' to initiate a re-authentication for sensitive actions, and we use the auth_time claim to determine if this should occur.
>
> Ordinarily each time we redirect to the auth endpoint with 'prompt=login' the auth_time is updated to the time that the authentication occurred.
>
> However, if we then redirect to the auth endpoint and the cookie is valid and used, any subsequent time after this authentication that we use the auth endpoint with 'prompt=login' the auth_time claim is not updated.
>
> Is this intended behaviour?
Yes. The claim "auth_time" points to the time of the active 
authentication. And the re-authentication with SSO cookie is not treated 
as "active" authentication, so this won't update auth_time. With 
"prompt=login" you need actively authenticate, so that will update 
auth_time.

Marek
>
> Thanks
>
> Matt
> _______________________________________________
> keycloak-user mailing list
> keycloak-user at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/keycloak-user