signing of payload example

[ebxml ebxml <eb...@yahoo.com.au>]

Hi all, i am new to XMLDSIG technology, plese excuse
me if i am asking silly
questions, we are implementing the ebXML MS 1.0 spec,
in that we need to sign 
the Payloads, it can be MS-Word, or a Plain text file
etc. and after signing 
the Reference element has to be in the main XML
document.

i tried to do that going through the JavaDoc of XMLSec
suite but i am getting 
the reference element like below

<ds:Reference URI="cid:232"
xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
    <ds:DigestMethod
Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/>
    <ds:DigestValue
xmlns:ds="http://www.w3.org/2000/09/xmldsig#"/>
</ds:Reference>

from the above u can see the DigestValue is empty.
can some body give an example how to do that. 


and i have one more question

in the XML Document which i am signing i have element
like below

<eb:StatusRequest eb:version="2.0">

<eb:RefToMessageId>20020829-030059-1@ninemsn.com</eb:RefToMessageId>
</eb:StatusRequest>	


after signing( signature.sign(privateKey); ) it adds
other namespace declarations like below 

<eb:StatusRequest eb:version="2.0"
   
xmlns:SOAP="http://schemas.xmlsoap.org/soap/envelope/"
   
xmlns:eb="http://www.oasis-open.org/committees/ebxml-msg/schema/msg-header-2_0.xsd"
    xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <eb:RefToMessageId

xmlns:SOAP="http://schemas.xmlsoap.org/soap/envelope/"

xmlns:eb="http://www.oasis-open.org/committees/ebxml-msg/schema/msg-header-2_0.xsd"
	xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">20020829-030059-1@ninemsn.com</eb:RefToMessageId>
</eb:StatusRequest>

how can i avoid this.

Thanks

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