Injecting username into the IdP login field from an SP request

Tom Scavo trscavo at gmail.com
Tue Sep 5 10:18:13 EDT 2017


On Tue, Sep 5, 2017 at 9:45 AM, Cantor, Scott <cantor.2 at osu.edu> wrote:
> On 9/5/17, 9:35 AM, "users on behalf of Dave Perry" <users-bounces at shibboleth.net on behalf of Dave.Perry at hull-college.ac.uk> wrote:
>
>> BUT we want to inject the username they have entered already, to save them entering it twice.
>> Is there a way to trigger a request for a shibboleth session, sending their user ID?
>
> The only way to communicate that in SAML has completely mandatory semantics that require that the identity of the user match the identity passed in a Subject element from the SP.

Would this require a signature on the AuthnRequest as well?

Tom


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