title: Validating xml signature on part of the document using SignedXml
body: <p>I am using the SignedXml class to validate a signature in a XML document. The signature refers only to part to the document.</p>
  
  <p>I am able to verify the signature, but how can I be sure that the signature is signing the specific part of the document that I need to validate? Someone could simply sign a different part of the document using the same key and the signature will still be valid.</p>