title: Is it Possible to validate Signature without <keyinfo> tag in XML
body: <p>I have an Signature Embedded XML:
  It does not have <code>&lt;Keyinfo&gt;</code>.</p>
  
  <p>Is it possible to verify the signature with the public certificate (.cer).</p>
  
  <pre><code>&lt;Signature xmlns="http://www.w3.org/2000/09/xmldsig#"&gt;
  &lt;SignedInfo&gt;&lt;CanonicalizationMethod Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315"/&gt;
  &lt;SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1"/&gt;&lt;Reference URI=""&gt;
  &lt;Transforms&gt;&lt;Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/&gt;&lt;/Transforms&gt;
  &lt;DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/&gt;&lt;DigestValue&gt;--Some Value--&lt;/DigestValue&gt;&lt;/Reference&gt;&lt;/SignedInfo&gt;&lt;SignatureValue&gt;--Some Value--&lt;/SignatureValue&gt;&lt;/Signature&gt;
  </code></pre>