[JIRA] (JOIDC-113) Stricter-then-standard parameter checking

[Simone Avogadro (Jira)]

Simone Avogadro ( https://shibboleth.atlassian.net/secure/ViewProfile.jspa?accountId=557058%3A60a84ee1-4961-471b-99d8-f67c05e24403 ) *created* an issue

IdP Plugin - OIDC OP ( https://shibboleth.atlassian.net/browse/JOIDC?atlOrigin=eyJpIjoiYTNkOTEzMTk3ZTMxNGUwOThjOTc2ZTE4MjY1ZTRiMjkiLCJwIjoiaiJ9 ) / Task ( https://shibboleth.atlassian.net/browse/JOIDC-113?atlOrigin=eyJpIjoiYTNkOTEzMTk3ZTMxNGUwOThjOTc2ZTE4MjY1ZTRiMjkiLCJwIjoiaiJ9 ) JOIDC-113 ( https://shibboleth.atlassian.net/browse/JOIDC-113?atlOrigin=eyJpIjoiYTNkOTEzMTk3ZTMxNGUwOThjOTc2ZTE4MjY1ZTRiMjkiLCJwIjoiaiJ9 ) Stricter-then-standard parameter checking ( https://shibboleth.atlassian.net/browse/JOIDC-113?atlOrigin=eyJpIjoiYTNkOTEzMTk3ZTMxNGUwOThjOTc2ZTE4MjY1ZTRiMjkiLCJwIjoiaiJ9 )

Issue Type: Task Affects Versions: 3.1.2 Assignee: Henri Mikkonen ( https://shibboleth.atlassian.net/secure/ViewProfile.jspa?accountId=557058%3A1614c4a5-c89e-4edc-9421-990bd6ea85fd ) Components: Authorization Endpoint Created: 30/May/22 2:24 PM Priority: Trivial Reporter: Simone Avogadro ( https://shibboleth.atlassian.net/secure/ViewProfile.jspa?accountId=557058%3A60a84ee1-4961-471b-99d8-f67c05e24403 )

We’ve a use-case where during the authorization phase (Auth code with PKCE using private_key_jwt authentication) we’d want to enforce that the following three parameters:

* response_type
* client_id
* scope

to be present and have identical values both as:

* request parameters
* JWT claims inside the RP-signed jar parameter

we could reasonabily check for that by adding in tercepting ServletFilter but maybe the OP offers a more elegant approach to enforce that so we’re asking your opinion here

( https://shibboleth.atlassian.net/browse/JOIDC-113#add-comment?atlOrigin=eyJpIjoiYTNkOTEzMTk3ZTMxNGUwOThjOTc2ZTE4MjY1ZTRiMjkiLCJwIjoiaiJ9 ) Add Comment ( https://shibboleth.atlassian.net/browse/JOIDC-113#add-comment?atlOrigin=eyJpIjoiYTNkOTEzMTk3ZTMxNGUwOThjOTc2ZTE4MjY1ZTRiMjkiLCJwIjoiaiJ9 )

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