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Status Submitted
Workspace WebSphere Liberty
Created by Guest
Created on Sep 17, 2026

RELATED IDEAS

Support of signing algorithms PS256

Currently liberty doesn't support signing algorithms PS256 but customer required it. 
They have a OIDC App that supports many in-house applications that supports signing algorithms PS256 and they can't change to RS255, it is a security risk for the customer

Currently the IAM platform-auth-service pod ( which bundles liberty) shows this error message


9/16/26, 17:46:49:308 GMT] 00015b73 .ibm.ws.security.openidconnect.client.jose4j.util.Jose4jUtil E CWWKS1706E: The OpenID Connect client [601e7dde-3f7f-4910-a481-221cfc543f3a] failed to validate the ID token due to [CWWKS1761E: Validation failed for the ID token requested by the [601e7dde-3f7f-4910-a481-221cfc543f3a] due to a mismatch of signing algorithms between the OpenID Connect client [RS256] and the OpenID Connect provider [PS256].].

They need a support for signing algorithms PS256 for the CloudPak (CPD) to work. Currenlty without thr support of signing algorithms PS256, they can't use the CloudPaK

Idea priority Urgent

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