Document removes xml header

[Michael Kail <mi...@rl-ag.com>]

Morning everybody!

Could it be, that the java class org.w3c.dom.Document removes my xml
header information(<?xml version="1.0" encoding=...)??? 
Before loading the xml file there is a header, after making an enveloped
xml signature and writing it back into file there is none.
Could it be that the Document class removes that information? Currently
am adding the header after signing with JDOM.... But I have to open and
parse 
The file again(ugly!).

Thanxs!!!!!

There's my source code, if there's any error... tell me:

javax.xml.parsers.DocumentBuilderFactory dbf =
	         javax.xml.parsers.DocumentBuilderFactory.newInstance();

	   //dbf.setNamespaceAware(true);
	
	   javax.xml.parsers.DocumentBuilder db =
dbf.newDocumentBuilder();
	      
	   org.w3c.dom.Document doc = db.parse(signatureFile);
	      
	   String BaseURI = signatureFile.toURL().toString();
	      
	
ElementProxy.setDefaultPrefix("http://www.w3.org/2000/09/xmldsig#","");
	      
	      XMLSignature sig = new XMLSignature(doc, BaseURI,
	
XMLSignature.ALGO_ID_SIGNATURE_DSA);
	      
	      //add signature information to document
	      Node nl = doc.getFirstChild();
	      nl.appendChild(sig.getElement());
	      
	      Transforms transforms = new Transforms(doc);

	
transforms.addTransform(Transforms.TRANSFORM_ENVELOPED_SIGNATURE);
	           
	      //add document "archivdescriptor" to signed content
	      sig.addDocument("", transforms,
Constants.ALGO_ID_DIGEST_SHA1);
	      
	      {
	         X509Certificate cert =
	            (X509Certificate)
ks.getCertificate(certificateAlias);
	
	         sig.addKeyInfo(cert);
	         sig.addKeyInfo(cert.getPublicKey());
	         sig.sign(privateKey);
	      }
	
	      FileOutputStream f = new FileOutputStream(signatureFile);
	      
	      XMLUtils.outputDOMc14nWithComments(doc, f);
	      f.close();

Re: Document removes xml header

[Raul Benito <ra...@apache.org>]

The <?xml ...> is removed by the Canocilazation method as it is
mandated by the c14n spec.

Regards,

Raul

On 3/23/06, Michael Kail <mi...@rl-ag.com> wrote:
> Morning everybody!
>
> Could it be, that the java class org.w3c.dom.Document removes my xml
> header information(<?xml version="1.0" encoding=...)???
> Before loading the xml file there is a header, after making an enveloped
> xml signature and writing it back into file there is none.
> Could it be that the Document class removes that information? Currently
> am adding the header after signing with JDOM.... But I have to open and
> parse
> The file again(ugly!).
>
> Thanxs!!!!!
>
> There's my source code, if there's any error... tell me:
>
> javax.xml.parsers.DocumentBuilderFactory dbf =
>                  javax.xml.parsers.DocumentBuilderFactory.newInstance();
>
>            //dbf.setNamespaceAware(true);
>
>            javax.xml.parsers.DocumentBuilder db =
> dbf.newDocumentBuilder();
>
>            org.w3c.dom.Document doc = db.parse(signatureFile);
>
>            String BaseURI = signatureFile.toURL().toString();
>
>
> ElementProxy.setDefaultPrefix("http://www.w3.org/2000/09/xmldsig#","");
>
>               XMLSignature sig = new XMLSignature(doc, BaseURI,
>
> XMLSignature.ALGO_ID_SIGNATURE_DSA);
>
>               //add signature information to document
>               Node nl = doc.getFirstChild();
>               nl.appendChild(sig.getElement());
>
>               Transforms transforms = new Transforms(doc);
>
>
> transforms.addTransform(Transforms.TRANSFORM_ENVELOPED_SIGNATURE);
>
>               //add document "archivdescriptor" to signed content
>               sig.addDocument("", transforms,
> Constants.ALGO_ID_DIGEST_SHA1);
>
>               {
>                  X509Certificate cert =
>                     (X509Certificate)
> ks.getCertificate(certificateAlias);
>
>                  sig.addKeyInfo(cert);
>                  sig.addKeyInfo(cert.getPublicKey());
>                  sig.sign(privateKey);
>               }
>
>               FileOutputStream f = new FileOutputStream(signatureFile);
>
>               XMLUtils.outputDOMc14nWithComments(doc, f);
>               f.close();
>


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