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Enveloping Signatures

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[This sample code uses features that were implemented in MSXML 5.0 for Microsoft Office Applications. XML digital signatures are not supported in MXSML 6.0 and later.]

The <ds:Signature> element contains the signed or to-be-signed data as the content of a <ds:Object> element. For example, the following signature template is for an enveloping signature in which a text object containing the plain text "Hello, World!" is embedded.

<?xml version="1.0" encoding="UTF-8"?>
<ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
  <ds:SignedInfo>
    <ds:CanonicalizationMethod 
         Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315"/>
    <ds:SignatureMethod 
         Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1"/>
    <ds:Reference URI="#obj">
      <ds:DigestMethod 
          Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/>
      <ds:DigestValue/>
    </ds:Reference>
  </ds:SignedInfo>
  <ds:SignatureValue/>
  <ds:Object Id="obj">Hello, World!</ds:Object>
</ds:Signature>

Notice that the reference of the text object uses the value of the Id attribute ("obj").