JNLP .java.policy no effect

Question

After updating to Jave 7 Update 51 a client's application stopped to work. I could enable it to run either via exception white list or by deploying a DeploymentRuleSet.jar using a self signed certificate and importing it via Java Control Panel.

In either case no permissions set in $HOME/.java_policy are actually granted. Is this a hard limitation imposed by this update or do I miss something?

Answer 1

Check out this posting from Oracle on the new security requirements for Web Start and Applets. You have to sign the jars, not with a self-signed certificate and also update the MANIFEST.MF for all downloaded jars to include the new permissions tag, plus some other optional tags.