Eclipse JPA : errorDecryptingPassword

[EL Severe]: 2012-05-02 14:43:04.13--ServerSession(29752800)--java.lang.NullPointerException
at java.util.ResourceBundle.getBundle(ResourceBundle.java:950)
at org.eclipse.persistence.exceptions.i18n.ExceptionMessageGenerator.buildMessage(ExceptionMessageGenerator.java:47)
at org.eclipse.persistence.exceptions.ValidationException.errorDecryptingPassword(ValidationException.java:864)
at org.eclipse.persistence.internal.security.JCEEncryptor.decryptPassword(JCEEncryptor.java:124)
at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.updateLogins(EntityManagerSetupImpl.java:1183)
at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.updateServerSession(EntityManagerSetupImpl.java:1449)
at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:372)
at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.getServerSession(EntityManagerFactoryImpl.java:164)
at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:221)
at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:209)
at com.acme.peppo2.cmdb.client.CMDBClient.<init>(CMDBClient.java:17)
at com.acme.peppo2.cmdb.client.CMDBClient.main(CMDBClient.java:29)

Exception in thread "main" javax.persistence.PersistenceException: java.lang.NullPointerException
at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:417)
at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.getServerSession(EntityManagerFactoryImpl.java:164)
at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:221)
at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:209)
at com.acme.peppo2.cmdb.client.CMDBClient.<init>(CMDBClient.java:17)
at com.acme.peppo2.cmdb.client.CMDBClient.main(CMDBClient.java:29)
Caused by: java.lang.NullPointerException
at java.util.ResourceBundle.getBundle(ResourceBundle.java:950)
at org.eclipse.persistence.exceptions.i18n.ExceptionMessageGenerator.buildMessage(ExceptionMessageGenerator.java:47)
at org.eclipse.persistence.exceptions.ValidationException.errorDecryptingPassword(ValidationException.java:864)
at org.eclipse.persistence.internal.security.JCEEncryptor.decryptPassword(JCEEncryptor.java:124)
at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.updateLogins(EntityManagerSetupImpl.java:1183)
at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.updateServerSession(EntityManagerSetupImpl.java:1449)
at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:372)
... 5 more


EntityManagerSetupImpl.updateLogins():

String user = EntityManagerFactoryProvider.getConfigPropertyAsStringLogDebug("javax.persistence.jdbc.user", m, session);
String password = EntityManagerFactoryProvider.getConfigPropertyAsStringLogDebug("javax.persistence.jdbc.password", m, session);
if(user != null)
login.setUserName(user);
if(password != null)
login.setPassword(securableObjectHolder.getSecurableObject().decryptPassword(password));


so the JCEEncryptor failes miserably trying to unencrypt a password...
So I need to AES-encrypt mypassword :

import java.io.ByteArrayOutputStream;
import java.io.ObjectOutputStream;

import javax.crypto.Cipher;
import javax.crypto.CipherOutputStream;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;

import org.eclipse.persistence.internal.helper.Helper;

public class AESEncryptor {
 public static void main(String[] args) {
  System.out.println(AESEncryptor.encryptPassword("mypassword"));
 }

 private static class Synergizer
 {
  private static SecretKey getAESMultitasker()
  throws Exception
  {
   return new SecretKeySpec(Helper.buildBytesFromHexString("3E7CFEF156E712906E1F603B59463C67"), "AES");
  }

  private Synergizer()
  {
  }
 }


 public static String encryptPassword(String password)
 {
  try
  {
   Cipher encryptCipherAES = Cipher.getInstance("AES/ECB/PKCS5Padding");
   encryptCipherAES.init(1, Synergizer.getAESMultitasker());
   ByteArrayOutputStream baos = new ByteArrayOutputStream();
   CipherOutputStream cos = new CipherOutputStream(baos, encryptCipherAES);
   ObjectOutputStream oos = new ObjectOutputStream(cos);
   oos.writeObject(password);
   oos.flush();
   oos.close();
   return Helper.buildHexStringFromBytes(baos.toByteArray());
  }
  catch(Exception e)
  {
   e.printStackTrace();
  }
  return null;
 } 

}

for i in 1..1000000000:
print "I hate Eclipse"