I have tried to enable HTTPS on my JBoss install by adding a connector to standalone.xml

the connector is as follows:

<connector name="https" protocol="HTTP/1.1" scheme="https" socket-binding="https" secure="true">
      <ssl name="ssl" key-alias="ssl" password="secret" certificate-key-file="${jboss.server.base.dir}/configuration/default.keystore" protocol="TLSv1" verify-client="false"/>
</connector>

When JBoss starts the https connector fails to start and I get the following error in the stack trace in the console:

at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) [rt.jar:1.6.0_45]
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) [rt.jar:1.6.0_45]
  at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0_45]
   Caused by: java.lang.NoClassDefFoundError: Could not initialize class
  javax.crypto.SunJCE_b
  at javax.crypto.Cipher.getInstance(DashoA13*..) [jce.jar:1.6]
  at com.sun.net.ssl.internal.ssl.JsseJce.getCipher(JsseJce.java:180) [jsse.jar:1.6]
  at com.sun.net.ssl.internal.ssl.CipherBox.<init>(CipherBox.java:85) [jsse.jar:1.6]
  at com.sun.net.ssl.internal.ssl.CipherBox.newCipherBox(CipherBox.java:119) [jsse.jar:1.6]
  at com.sun.net.ssl.internal.ssl.CipherSuite$BulkCipher.newCipher(CipherSuite.java:369) [jsse.jar:1.6]

Any advice would be much appreacited

cheers grant