Importing Signature element - namespace problems

[Stephen Chell (DSL AK)]

Hi all,

I'm having problems importing an XML Signature element into a SOAP envelope.
I can create the signature without problem, but when I import the signature
element into the SOAP header, all of the elements in the entire SOAP
envelope have a default namespace declaration of xmlns="" added to them.
Also, all sub-elements of the <ds:Signature
xmlns:ds="http://www.w3.org/2000/09/xmldsig#";> element have the following
redundant namespace declaration added to them:

xmlns:ds="http://www.w3.org/2000/09/xmldsig#";

Any idea how to prevent these changes from happening?   (Note: the problem
also happens if I attempt to create the signature directly in the soap
header.)

Here are some code fragments I'm using to generate the signature and import
it into the soap header:


    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
    DocumentBuilder docBuilder = dbf.newDocumentBuilder();
    Document doc = docBuilder.newDocument();

    org.apache.xml.security.utils.Constants.setSignatureSpecNSprefix("ds");

    String baseURI = null;
    XMLSignature signature = new XMLSignature(doc, baseURI, 
        XMLSignature.ALGO_ID_SIGNATURE_DSA);
            
    signature.addResourceResolver(
        new InputStreamReferenceResolver(getInputStream(),getContentType())
        );
            
    doc.appendChild(signature.getElement());

    signature.addDocument(null, null, 
        org.apache.xml.security.utils.Constants.ALGO_ID_DIGEST_SHA1);

    signature.sign(privateKey);

    // Now import the signature into the SOAP header
    SOAPMessage message = ...   
    SOAPPart soapPart = message.getSOAPPart();
    SOAPHeader soapHeader = message.getSOAPHeader();

    org.w3c.dom.Node signatureNode = 
        soapPart.importNode(signature.getElement(),true);
     soapHeader.appendChild(signatureNode);
      
      
The resulting SOAP Envelope looks like this:


<SOAP-ENV:Envelope
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"; xmlns="">
    <SOAP-ENV:Header xmlns="">
        <ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#";
xmlns="">
            <ds:SignedInfo xmlns=""
xmlns:ds="http://www.w3.org/2000/09/xmldsig#";>
                <ds:CanonicalizationMethod
Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315   " xmlns=""
xmlns:ds="http://www.w3.org/2000/09/xmldsig#"/>
                <ds:SignatureMethod
Algorithm="http://www.w3.org/2000/09/xmldsig#dsa-sha1"; xmlns=""
xmlns:ds="http://www.w3.org/2000/09/xmldsig#"/>
                <ds:Reference xmlns=""
xmlns:ds="http://www.w3.org/2000/09/xmldsig#";>
                    <ds:DigestMethod
Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"; xmlns=""
xmlns:ds="http://www.w3.org/2000/09/xmldsig#"/>
                    <ds:DigestValue xmlns=""
xmlns:ds="http://www.w3.org/2000/09/xmldsig#";>
                        Vf8a/Rvic27UJqOhMqyIHYimSLw=
                    </ds:DigestValue>
                </ds:Reference>
            </ds:SignedInfo>
            <ds:SignatureValue xmlns=""
xmlns:ds="http://www.w3.org/2000/09/xmldsig#";>
                bMabvDDzk0g2KmP3Yb+ybaL+GwBN4sDFT+yuUuapWoZfILgNkxh90g==
            </ds:SignatureValue>
        </ds:Signature>
    </SOAP-ENV:Header>
    <SOAP-ENV:Body xmlns="">
    ...
    </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

When what I really want is this:

<SOAP-ENV:Envelope
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/";>
    <SOAP-ENV:Header>
        <ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#";>
            <ds:SignedInfo>
                <ds:CanonicalizationMethod
Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315   "/>
                <ds:SignatureMethod
Algorithm="http://www.w3.org/2000/09/xmldsig#dsa-sha1"/>
                <ds:Reference>
                    <ds:DigestMethod
Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/>
                    <ds:DigestValue>
                        Vf8a/Rvic27UJqOhMqyIHYimSLw=
                    </ds:DigestValue>
                </ds:Reference>
            </ds:SignedInfo>
            <ds:SignatureValue>
                bMabvDDzk0g2KmP3Yb+ybaL+GwBN4sDFT+yuUuapWoZfILgNkxh90g==
            </ds:SignatureValue>
        </ds:Signature>
    </SOAP-ENV:Header>
    <SOAP-ENV:Body>
    ...
    </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

Thanks in advance ...

Steve