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Status Is a defect
Workspace WebSphere Liberty
Created by Guest
Created on Jun 1, 2026

RELATED IDEAS

New configuration to disable error BadPaddingException when server starts with different keystore_password

 Due to the changes in WAS Liberty 26.0.0.4 "LTPA keysPassword default value removal" and setting keystore_password, we now get error BadPaddingException on each new server startup, because the password in keystore_password differs from the default one. Previously, when default password was used, we had no such exception and therefore we could copy the file ltpa.keys on all servers  (as they should be identical to share SSO across multiple Liberty application instances).

It would help greatly when we could disable this error, which also generates FFDC file:

FFDC1015I: An FFDC Incident has been created: "javax.crypto.BadPaddingException: Given final block not properly padded com.ibm.ws.security.token.ltpa.LTPAKeyInfoManager 274"

Because we are using cluster environment, then each pod means new server instance and again this error.

When it's a normal behaviour described also here Enhanced JWT validation, Java 26 support, and more in 26.0.0.4- OpenLiberty.io "...then the keystore_password is used to reencrypt the LTPA keys that were previously encrypted with the default keysPassword when the server starts." then it would be better, if the error like this wouldn't be thrown and FFDC generated.

It confuses alerting based on FFDC files presence and amount of error logs.

Thanks a lot

Idea priority Low

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