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Sign .jar file using existing signed .jar file

Rohan Kalbhor
Ranch Hand

Joined: Aug 18, 2006
Posts: 78
Hello all,
I have some Signed Jar files.Now I have to insert my own jar file into the already existing jar files .Obviously my Jar file is not signed so it will not work.
I do not have the signature used to sign the existing jar files
Is there any way that i can sign my jar file using the existing jar files?
Is there any other way?

Please Help
Rohan Kalbhor

..............................<br />Exceptions are a part of possibility<br />Errors are a part of truth<br />................................
Jan van Mansum
Ranch Hand

Joined: Oct 19, 2007
Posts: 74
You need the certificate with which your signed jar files were signed. You cannot sign your jar file with a signed jar file. That would defeat the purpose of signing, as it would mean that you could download a jar file signed by say Sun Microsystems and then create your own jar files---containing, say, a virus---signed by Sun Microsystems.

Are you creating an applet, a Java application deployed by WebStart or something else?

SCJP 1.4, SCWCD 1.4
I agree. Here's the link:
subject: Sign .jar file using existing signed .jar file
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