Is possible Run Java Applet without edit java.policy file?

I have a java applet for load my DLL Library (IAIK Library).

I want to use it from JavaScript. I signed it and load in IIS for run in Web page.

But always occurs security access error. If I add bellow code to java.policy, it work correctly.

grant { permission java.security.AllPermission;};  

I use this structure in my applet

public void method() {
    AccessController.doPrivileged(new PrivilegedAction() {

        public Object run() {
            // It will work if your applet is signed
            callWeb();
            return null;
        }

    });

}

private void callWeb() {

}

I follow this operations:

1. I put my native code in privileged block.
2. I change value of Permissions in Manifest file in my jar, from sandbox to allpermissions
3. I sign it and then OK.

Thank you.