PKCS12 Certificate could not be loaded due to unsupported keysize

Technote (troubleshooting)


WPG customer can not load a PKCS12 and is getting the error message:

Certificate could not be loaded due to unsupported keysize. Please refer to the documentation for further details. Error details : Error in loading the keystore: Private key decryption error: (java.lang.SecurityException: Unsupported keysize or algorithm parameters)


Error message suggesting unsupported keysize


Java Policy

Resolving the problem

Contains new Java policy and customer is advised to download new Java policy to resolve the problem.

Important Note: Customer must have an IBM userid and password to download the Java policy.

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Document information

More support for:

WebSphere Partner Gateway Advanced Edition

Software version:


Operating system(s):

AIX, Windows

Software edition:

All Editions, Enterprise

Reference #:


Modified date:


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