The KeyFromCSP example uses a signature template file that contains internally referenced text data to be signed. This file has the following characteristics:
<ds:Object Id="HelloWorld"> element.<ds:KeyInfo>, is missing and will be added when the data is signed.Signature Template (signature_template.rsa.xml)
<?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="#HelloWorld" Type=
"http://www.w3.org/2000/09/xmldsig#;Object">
<ds:DigestMethod Algorithm=
"http://www.w3.org/2000/09/xmldsig#sha1"/>
<ds:DigestValue/>
</ds:Reference>
</ds:SignedInfo>
<ds:SignatureValue />
<ds:Object Id="HelloWorld"
MimeType="text/plain">Hello, World!</ds:Object>
</ds:Signature>