[xmlsec] Detached Signature over the content of Xml Tag

[Admir Pasalic]

Hi all!

I´m trying to make a Detached signature over the content of one single  
Xml Tag.
The Xml Tag looks like this:
<Data>
Base64 encoded Data...
</Data>

The signature is supposed to be made over the contents of the Tag,  
excluding the Tag itself.
The content of the Tag is base64 encoded.
I use a signature template file with XPath inside pointing to the  
desired Tag.

I have already made a code that works with a different tag tree, but  
it looks like
it´s not suitable for the signing of a single tag value (without tags  
itself).

Many thanks in advance.