“Invalid signature file” when attempting to run a .jar

Question

My java program is packaged in a jar file and makes use of an external jar library, bouncy castle. My code compiles fine, but running the jar leads to the following error:

Exception in thread "main" java.lang.SecurityException: Invalid signature file digest for Manifest main attributes

I've googled for over an hour searching for an explanation and found very little of value. If anyone has seen this error before and could offer some help, I would be obliged.

Answer 1

Here’s a detailed solution that might provide a pointer:

java.lang.SecurityException

Conclusion:

It's presumably fit to keep the official jar as is and just append it as a dependency in the manifest file for our application jar file.