Question

I’m having the following method in an applet which is called via JavaScript

public String getAString()
    {
        Object rc = AccessController.doPrivileged(
        new java.security.PrivilegedAction() 
        {
            public Object run()
            {
                try
                {
                    return "OK";
                }
                catch (Throwable t)
                {
                    t.printStackTrace();
                    return "ERROR: " + t.getMessage() + " " + t.getCause();
                }
            }
        });


        // Return value
        return rc.toString();
    }

The applet is signed using a certificate created with keytool

When I call getAString() if throws the InvocationTargetException.
If I call other methods which don’t use the AccessController class, I’m not having this problem.

Also, each time I open the browser I’m asked to allow the applet to run even the the applet is signed.

How can I fix this?

edit

I added a button and now I’m getting more info:

signer information does not match signer information of other classes
in the same package

I’m using a third party archive. In the original form is unsigned, but I signed it using the same cert (although with different commands).

edit 2
Here is how I sign the jars

keytool -genkey -keystore vkeystore -keyalg rsa -dname "CN=XXX, OU=XXX, O=XXX, L=Atlanta, ST=GA,C=NL" -alias printer -validity 3600 -keypass XXX-storepass XXX

jarsigner -keystore vkeystore -storepass XXX -keypass XXX -signedjar JSPrintS.jar JSPrint.jar printer

jarsigner -keystore vkeystore -storepass XXX -keypass XXX -signedjar jPDFPrintS.jar jPDFPrint.jar printer

JSPrint.jar contains the applet

edit 3

the applet definition is (located in JSPrint.jar)

package Eplatforms;

import java.net.URL;
import java.security.AccessController;

import javax.swing.JApplet;
import java.awt.event.*;
import java.awt.*;

import com.XXX.pdfPrint.PDFPrint;

public class JSPrint extends JApplet implements ActionListener
....

jPDFPrint.jar is a third party jar

EDIT 4

I tried to minimize the problem a bit and I found out that when calling AccessControler.doPrivileged from a jar file (even signed one), I get the following exception:

Exception in thread "main" java.lang.NoClassDefFoundError: TestPrivileges$1
        at TestPrivileges.getAString(TestPrivileges.java:14)
        at TestPrivileges.main(TestPrivileges.java:7)
Caused by: java.lang.ClassNotFoundException: TestPrivileges$1
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)

Here is a testing class:

http://pastebin.com/EgmdwuqL

Notice that calling other methods doesn’t raise this exception.

Here is how I compile and run it:

javac TestPrivileges.java
java TestPrivileges
jar cvf TestPrivileges.jar TestPrivileges.class
jarsigner -keystore vkeystore -storepass My0Company -keypass My0Company -signedjar TestPrivilegesS.jar TestPrivileges.jar printer
copy TestPrivilegesS.jar x /Y
copy TestPrivileges.jar x /Y
cd x
java -classpath TestPrivilegesS.jar TestPrivileges
java -classpath TestPrivileges.jar TestPrivileges
cd ..

A quick for vkeystore:

keytool -genkey -keystore vkeystore -keyalg rsa -dname "CN=MyCompany, OU=MyCompany, O=MyCompany, L=Atlanta, ST=GA,C=NL" -alias printer -validity 3600 -keypass My0Company -storepass My0Company

The first run works ok (probably because the class file is in the same directory).
Then I create to archives, one signed and another unsigned. When I run them, I got those errors. Notice the jars are in a separate folder which contains only those jars and no class file.

Answer 1

I am with Andrew on this.

I’ve created an app that should help us find the code signing issue.

https://gist.github.com/2596125

(Since we don’t want to Spam Andrew I’ve created this.)

With more information that finally came out it seems that you are not packing the TestPrivileges$1 class with the jar.

To fix this do this for jar packing:

jar cvf TestPrivileges.jar TestPrivileges.class TestPrivileges$1.class