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Status Submitted
Created by Guest
Created on Jan 24, 2025

JWKS : define alg attribute as optional to comply with RFC7517

When you configure QMGR for JWT use, you need to set a "Endpoint" attribute in qm.ini which specifies the URL for a JWKS document which provides the public keys required to validate tokens signed by this issuer.

However, as these keys are ruled by RFC7517 : the "alg" attribute should be OPTIONAL.

4.4.  "alg" (Algorithm) Parameter

The "alg" (algorithm) parameter identifies the algorithm intended for
use with the key. The values used should either be registered in the
IANA "JSON Web Signature and Encryption Algorithms" registry
established by [JWA] or be a value that contains a Collision-
Resistant Name. The "alg" value is a case-sensitive ASCII string.
Use of this member is OPTIONAL.

So that, some identity providers like Microsoft Azure EntraID, do not implement this attribute, and when you configure QMGR and refresh security, you face this issue

407

Missing one or more of the required attributes in the retrieved JWKS payload. The required attributes are use, alg, kid, n, and e.

Check that the JWKS payload contains one or more of the required attributes listed.

Idea priority Urgent