[xmlsec] XmlDSig Enveloping another xml

[Alexwell Sandro]

I do not know if this is the list for this question.

I am try to learn about enveloping signature.

If I sign another xml file, what can happen?
I cannot find examples.

*For this file:*

<?xml version="1.0" encoding="ISO-8859-1"?>
<newdoc>
  <content>hi</content>
</newdoc>

*First case "using xmlAddChild":*
...
*<ds:Object Id="obj-1236">*<newdoc>
  <content>hi</content>
</newdoc>*</ds:Object>*
*</ds:Signature>*

- The enconding declaration disappears...
- Possible namespace conflit (without prefix)

*Second case "using xmlNodeSetContent":*
...
*<ds:Object Id="obj-1236">**<?xml version="1.0"
encoding="ISO-8859-1"?>&#xD;*
*<newdoc>&#xD;*
*  <content>hi</content>&#xD;*
*</newdoc>**</ds:Object>*
*</ds:Signature>*

Exists another way? What pros and cons?

Can you recommend Articles.

Thanks,
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