How to sign just one node

[Jorge Ortiz]

Hi,

I'm starting with XML DSIG and Apache Security
and I'm getting some errors from XML documents
I've signed. When I sign the whole document
I have no problem. I can generate the Signature
node wherever I want and verification process works fine.

My problem is the next: lest's say I have an XML similar to

<data>
  <data1>Text 1</data1>
  <data2>Text 2</data2>
</data>

I'd like to sign each data node independently and get something like

<data>
  <data1>Text 1
    <Signature>SignInfo, keys, digest, etc.</Signature>
  </data1>
  <data2>Text 2
    <Signature>SignInfo, keys, digest, etc.</Signature>
  </data2>
</data>

Is it possible with XML DSIG? Any sample of how to make it work?

Thanks in advance
Jorge