title: Restrict java to only execute signed jars?
body: <p>Java jars can be signed with the JDK jarsigner tool.  This, in conjuction with the policytool,  appears to only allow you to add privileges to the jar when it is run.  I would like a default "Revoke access to run."  Is it possible to make java do white-listing in such a way that only jar files that have been signed by a certain set of certificates are allowed to run at all?</p>