Configure Rampart for SHA256 with Axis2?

[Henry Dong]

Hi,
    I would like to configure Rampart 1.5 to use SHA256 with Axis2 but not sure 
how.   I got SHA1 to work but don't how to configure for SHA256.   If you have 
done, please let me know.  I really appreciate all your help.  Thanks.

For SHA1, in my axis2.xml, I have below lines.  What should I do for SHA256?

 <parameter name="OutflowSecurity">
      <action>
        <items>Signature</items>
        <user>client</user>
        <passwordCallbackClass>sample.PWCBHandler</passwordCallbackClass>
        <signaturePropFile>client.properties</signaturePropFile>
        <signatureKeyIdentifier>DirectReference</signatureKeyIdentifier>  
      </action>
    </parameter>