How to unpack a digitally signed JAR file.

averill

After unpacking is required, it can be used again after packaging.
At present, if I unpack it directly and go back to JAR, I will get an error.
It is said to be the cause of the digital signature.
The JAR file directory structure is as follows:
├─com
│.
│.
│.
├─META-INF
│ INTELLIT.DSA
│ INTELLIT.SF
│ MANIFEST.MF
└─Test.class
Is the DSA a secret key? How to unpack and modify a file so that it can be used after being packaged back?

zxg121

Of course it is impossible to have the key in the package, otherwise where is the security

You can only delete its signature file, or sign it once with your own key