(C# UWP/WinRT) Verify Multiple Signatures in XML

Demonstrates how to verify multiple signatures within a single XML document.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads Chilkat for the Universal Windows Platform (UWP)

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// A sample XML file containing multiple signatures is available at:
// https://www.chilkatsoft.com/exampleData/document.signed.bes.cs.xml

Chilkat.Http http = new Chilkat.Http();
Chilkat.StringBuilder sbXml = new Chilkat.StringBuilder();
bool success = await http.QuickGetSbAsync("https://www.chilkatsoft.com/exampleData/document.signed.bes.cs.xml",sbXml);
if (success != true) {
    Debug.WriteLine(http.LastErrorText);
    return;
}

// Load the XML containing the signature to be verified.
Chilkat.XmlDSig verifier = new Chilkat.XmlDSig();
success = verifier.LoadSignatureSb(sbXml);
if (success != true) {
    Debug.WriteLine(verifier.LastErrorText);
    return;
}

// How many Signatures exist in this XML?
Debug.WriteLine("Number of XML signatures = " + Convert.ToString(verifier.NumSignatures));

// Let's show the XML nicely indented, so we can make sense of it.
// Loading the XML into an XML parser and re-emitting with nice formatting
// changes whitespace that breaks the signatures.  We're only doing this
// for the example to examine this XML, which contains 2 ds:Signature's
// and each signature has multiple references.

// This is what we have:
// (scroll down to continue with this example..)

// <?xml version="1.0" encoding="UTF-8" ?>
// <collection Id="root">
//     <album>
//         <title>Questions, unanswered</title>
//         <artist>Steve and the flubberblubs</artist>
//         <year>1989</year>
//         <t:tracks xmlns:t="http://test.xades4j/tracks">
//             <t:song length="4:05" tracknumber="1">
//                 <t:title>What do you know?</t:title>
//                 <t:artist>Steve and the flubberblubs</t:artist>
//                 <t:lastplayed>2006-10-17-08:31</t:lastplayed>
//             </t:song>
//             <t:song length="3:45" tracknumber="2">
//                 <t:title>Who do you know?</t:title>
//                 <t:artist>Steve and the flubberblubs</t:artist>
//                 <t:lastplayed>2006-10-17-08:35</t:lastplayed>
//             </t:song>
//             <t:song length="5:14" tracknumber="3">
//                 <t:title>When do you know?</t:title>
//                 <t:artist>Steve and the flubberblubs</t:artist>
//                 <t:lastplayed>2006-10-17-08:39</t:lastplayed>
//             </t:song>
//             <t:song length="4:19" tracknumber="4">
//                 <t:title>Do you know?</t:title>
//                 <t:artist>Steve and the flubberblubs</t:artist>
//                 <t:lastplayed>2006-10-17-08:44</t:lastplayed>
//             </t:song>
//         </t:tracks>
//     </album>
//     <ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#" Id="xmldsig-ff7d9ad7-f36d-4af0-b21a-7db2e840efad">
//         <ds:SignedInfo>
//             <ds:CanonicalizationMethod Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315" />
//             <ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256" />
//             <ds:Reference Id="xmldsig-ff7d9ad7-f36d-4af0-b21a-7db2e840efad-ref0" URI="#root">
//                 <ds:Transforms>
//                     <ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature" />
//                 </ds:Transforms>
//                 <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256" />
//                 <ds:DigestValue>rD/g8soqKz8EiPUBhEWfcQacS0ta4ULHX3dKMEH6ZoQ=</ds:DigestValue>
//             </ds:Reference>
//             <ds:Reference Type="http://uri.etsi.org/01903#SignedProperties" URI="#xmldsig-ff7d9ad7-f36d-4af0-b21a-7db2e840efad-signedprops">
//                 <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256" />
//                 <ds:DigestValue>pfrrRjkGNPiRF2Bjuj3IJTGSEFYc2PDs6FCNAUJOu8E=</ds:DigestValue>
//             </ds:Reference>
//         </ds:SignedInfo>
//         <ds:SignatureValue Id="xmldsig-ff7d9ad7-f36d-4af0-b21a-7db2e840efad-sigvalue">Vb/2ay4rX9cytiRCmBkgRkE4d0E05nkM412CwOHvTagCXPZZ2B2ifbmrQznTEU6Jz0dF65j5kU7C
// bYK+9fMKB0lmqx2kUdWeBa30Rl/3ELKWKOLeDFN91zC3q4a6dtzQGwBidWex+2dO8Z69sBd2aTS6
// S6nyGs53kTspDHfBeyg=</ds:SignatureValue>
//         <ds:KeyInfo>
//             <ds:X509Data>
//                 <ds:X509Certificate>MIICbTCCAdqgAwIBAgIQpkK0uals+ItHxBlpJuypOTAJBgUrDgMCHQUAMD8xCzAJBgNVBAYTAlBU
// MQ0wCwYDVQQKEwRJU0VMMQswCQYDVQQLEwJDQzEUMBIGA1UEAxMLSXRlcm1lZGlhdGUwHhcNMTAw
// NjI1MTc1ODQ5WhcNMzkxMjMxMjM1OTU5WjBCMQswCQYDVQQGEwJQVDENMAsGA1UEChMESVNFTDEL
// MAkGA1UECxMCQ0MxFzAVBgNVBAMTDkx1aXMgR29uY2FsdmVzMIGfMA0GCSqGSIb3DQEBAQUAA4GN
// ADCBiQKBgQCpP9acMX69Dbg9ciMLFc5dm1tlpTY9OTNZ/EaCYoGVhh/3+DFgyIbEer6SA24hpREm
// AhNG9+Ca0AurDPPgb3aKWFY9pj1WcOctis0VsR0YvzqP+2IGFqKDCd7bXFvv2tI0dEvpdc0oO6PF
// Q02xvJG0kxQf44XljOCjUBU43jkJawIDAQABo28wbTBrBgNVHQEEZDBigBBdbbL4pDKLT56PpOpA
// /56toTwwOjELMAkGA1UEBhMCUFQxDTALBgNVBAoTBElTRUwxCzAJBgNVBAsTAkNDMQ8wDQYDVQQD
// EwZUZXN0Q0GCEN00x9qe7SuWQvpLK0/oay8wCQYFKw4DAh0FAAOBgQBSma8g9dQjiQo4WUljRRuG
// yMUVRyCqW/9oRz8+0EoLNR/AhrIlGqdNbqQ1BkncgNNdqMAus5VD34v/EhgrkgWN5fZajMpYsmcR
// Ahu4PzJ6hggAlWWMy245JwIYuV0s1Oi39GVTxVNOBIX//AONZlGWO4S2Psb1mqdZ99b/MugsaA==</ds:X509Certificate>
//             </ds:X509Data>
//         </ds:KeyInfo>
//         <ds:Object>
//             <xades:QualifyingProperties xmlns:xades="http://uri.etsi.org/01903/v1.3.2#" xmlns:xades141="http://uri.etsi.org/01903/v1.4.1#" Target="#xmldsig-ff7d9ad7-f36d-4af0-b21a-7db2e840efad">
//                 <xades:SignedProperties Id="xmldsig-ff7d9ad7-f36d-4af0-b21a-7db2e840efad-signedprops">
//                     <xades:SignedSignatureProperties>
//                         <xades:SigningCertificate>
//                             <xades:Cert>
//                                 <xades:CertDigest>
//                                     <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256" />
//                                     <ds:DigestValue>4btVb5gQ5cdcNhGpvDSWQZabPQrR9jf1x8e3YF9Ajss=</ds:DigestValue>
//                                 </xades:CertDigest>
//                                 <xades:IssuerSerial>
//                                     <ds:X509IssuerName>CN=Itermediate,OU=CC,O=ISEL,C=PT</ds:X509IssuerName>
//                                     <ds:X509SerialNumber>-119284162484605703133798696662099777223</ds:X509SerialNumber>
//                                 </xades:IssuerSerial>
//                             </xades:Cert>
//                             <xades:Cert>
//                                 <xades:CertDigest>
//                                     <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256" />
//                                     <ds:DigestValue>vm5QpbblsWV7fCYXotPhNTeCt4nk8cLFuF36L5RJ4Ok=</ds:DigestValue>
//                                 </xades:CertDigest>
//                                 <xades:IssuerSerial>
//                                     <ds:X509IssuerName>CN=TestCA,OU=CC,O=ISEL,C=PT</ds:X509IssuerName>
//                                     <ds:X509SerialNumber>-46248926895392336918291885380930606289</ds:X509SerialNumber>
//                                 </xades:IssuerSerial>
//                             </xades:Cert>
//                             <xades:Cert>
//                                 <xades:CertDigest>
//                                     <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256" />
//                                     <ds:DigestValue>AUaN+IdhKQqxIVmEOrFwq+Dn22ebTkXJqD3BoOP/x8E=</ds:DigestValue>
//                                 </xades:CertDigest>
//                                 <xades:IssuerSerial>
//                                     <ds:X509IssuerName>CN=TestCA,OU=CC,O=ISEL,C=PT</ds:X509IssuerName>
//                                     <ds:X509SerialNumber>-99704378678639105802976522062798066869</ds:X509SerialNumber>
//                                 </xades:IssuerSerial>
//                             </xades:Cert>
//                         </xades:SigningCertificate>
//                         <xades:SignerRole>
//                             <xades:ClaimedRoles>
//                                 <xades:ClaimedRole>CounterSignature maniac</xades:ClaimedRole>
//                             </xades:ClaimedRoles>
//                         </xades:SignerRole>
//                     </xades:SignedSignatureProperties>
//                 </xades:SignedProperties>
//                 <xades:UnsignedProperties>
//                     <xades:UnsignedSignatureProperties>
//                         <xades:CounterSignature>
//                             <ds:Signature Id="xmldsig-7479045c-8083-49eb-9043-1ac2af4a759c" 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/2001/04/xmldsig-more#rsa-sha256" />
//                                     <ds:Reference Id="xmldsig-7479045c-8083-49eb-9043-1ac2af4a759c-ref0" URI="#xmldsig-ff7d9ad7-f36d-4af0-b21a-7db2e840efad-sigvalue">
//                                         <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256" />
//                                         <ds:DigestValue>Nr5JKCScyqjKWneJw2AC6YmdU/2JZA5Pj40fkVCFbL4=</ds:DigestValue>
//                                     </ds:Reference>
//                                     <ds:Reference Type="http://uri.etsi.org/01903#SignedProperties" URI="#xmldsig-7479045c-8083-49eb-9043-1ac2af4a759c-signedprops">
//                                         <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256" />
//                                         <ds:DigestValue>PJWDlPFdx4TJ5AXT3nIbFa2euboYGM7bpuBmol4nKSQ=</ds:DigestValue>
//                                     </ds:Reference>
//                                 </ds:SignedInfo>
//                                 <ds:SignatureValue Id="xmldsig-7479045c-8083-49eb-9043-1ac2af4a759c-sigvalue">MCcli4l5rAsGeJX2gOmoYDIAXnbszmRwOH94y7kHnpxCwGwoVrCaLSONtgKEy8mj9Ehqa/R5Dj5g
// DgC77VkNIaRKD613JMnbsaqZ7PD0iVivLvBkasTch4PX92UEbk8EvCgzxvhlgN+L6zSLsv65sFcR
// lFUGluMtzrqlDKvts38=</ds:SignatureValue>
//                                 <ds:KeyInfo>
//                                     <ds:X509Data>
//                                         <ds:X509Certificate>MIICbTCCAdqgAwIBAgIQpkK0uals+ItHxBlpJuypOTAJBgUrDgMCHQUAMD8xCzAJBgNVBAYTAlBU
// MQ0wCwYDVQQKEwRJU0VMMQswCQYDVQQLEwJDQzEUMBIGA1UEAxMLSXRlcm1lZGlhdGUwHhcNMTAw
// NjI1MTc1ODQ5WhcNMzkxMjMxMjM1OTU5WjBCMQswCQYDVQQGEwJQVDENMAsGA1UEChMESVNFTDEL
// MAkGA1UECxMCQ0MxFzAVBgNVBAMTDkx1aXMgR29uY2FsdmVzMIGfMA0GCSqGSIb3DQEBAQUAA4GN
// ADCBiQKBgQCpP9acMX69Dbg9ciMLFc5dm1tlpTY9OTNZ/EaCYoGVhh/3+DFgyIbEer6SA24hpREm
// AhNG9+Ca0AurDPPgb3aKWFY9pj1WcOctis0VsR0YvzqP+2IGFqKDCd7bXFvv2tI0dEvpdc0oO6PF
// Q02xvJG0kxQf44XljOCjUBU43jkJawIDAQABo28wbTBrBgNVHQEEZDBigBBdbbL4pDKLT56PpOpA
// /56toTwwOjELMAkGA1UEBhMCUFQxDTALBgNVBAoTBElTRUwxCzAJBgNVBAsTAkNDMQ8wDQYDVQQD
// EwZUZXN0Q0GCEN00x9qe7SuWQvpLK0/oay8wCQYFKw4DAh0FAAOBgQBSma8g9dQjiQo4WUljRRuG
// yMUVRyCqW/9oRz8+0EoLNR/AhrIlGqdNbqQ1BkncgNNdqMAus5VD34v/EhgrkgWN5fZajMpYsmcR
// Ahu4PzJ6hggAlWWMy245JwIYuV0s1Oi39GVTxVNOBIX//AONZlGWO4S2Psb1mqdZ99b/MugsaA==</ds:X509Certificate>
//                                     </ds:X509Data>
//                                 </ds:KeyInfo>
//                                 <ds:Object>
//                                     <xades:QualifyingProperties Target="#xmldsig-7479045c-8083-49eb-9043-1ac2af4a759c" xmlns:xades="http://uri.etsi.org/01903/v1.3.2#" xmlns:xades141="http://uri.etsi.org/01903/v1.4.1#">
//                                         <xades:SignedProperties Id="xmldsig-7479045c-8083-49eb-9043-1ac2af4a759c-signedprops">
//                                             <xades:SignedSignatureProperties>
//                                                 <xades:SigningTime>2012-10-13T14:26:18.783+01:00</xades:SigningTime>
//                                                 <xades:SigningCertificate>
//                                                     <xades:Cert>
//                                                         <xades:CertDigest>
//                                                             <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256" />
//                                                             <ds:DigestValue>4btVb5gQ5cdcNhGpvDSWQZabPQrR9jf1x8e3YF9Ajss=</ds:DigestValue>
//                                                         </xades:CertDigest>
//                                                         <xades:IssuerSerial>
//                                                             <ds:X509IssuerName>CN=Itermediate,OU=CC,O=ISEL,C=PT</ds:X509IssuerName>
//                                                             <ds:X509SerialNumber>-119284162484605703133798696662099777223</ds:X509SerialNumber>
//                                                         </xades:IssuerSerial>
//                                                     </xades:Cert>
//                                                     <xades:Cert>
//                                                         <xades:CertDigest>
//                                                             <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256" />
//                                                             <ds:DigestValue>vm5QpbblsWV7fCYXotPhNTeCt4nk8cLFuF36L5RJ4Ok=</ds:DigestValue>
//                                                         </xades:CertDigest>
//                                                         <xades:IssuerSerial>
//                                                             <ds:X509IssuerName>CN=TestCA,OU=CC,O=ISEL,C=PT</ds:X509IssuerName>
//                                                             <ds:X509SerialNumber>-46248926895392336918291885380930606289</ds:X509SerialNumber>
//                                                         </xades:IssuerSerial>
//                                                     </xades:Cert>
//                                                     <xades:Cert>
//                                                         <xades:CertDigest>
//                                                             <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256" />
//                                                             <ds:DigestValue>AUaN+IdhKQqxIVmEOrFwq+Dn22ebTkXJqD3BoOP/x8E=</ds:DigestValue>
//                                                         </xades:CertDigest>
//                                                         <xades:IssuerSerial>
//                                                             <ds:X509IssuerName>CN=TestCA,OU=CC,O=ISEL,C=PT</ds:X509IssuerName>
//                                                             <ds:X509SerialNumber>-99704378678639105802976522062798066869</ds:X509SerialNumber>
//                                                         </xades:IssuerSerial>
//                                                     </xades:Cert>
//                                                 </xades:SigningCertificate>
//                                             </xades:SignedSignatureProperties>
//                                         </xades:SignedProperties>
//                                     </xades:QualifyingProperties>
//                                 </ds:Object>
//                             </ds:Signature>
//                         </xades:CounterSignature>
//                     </xades:UnsignedSignatureProperties>
//                 </xades:UnsignedProperties>
//             </xades:QualifyingProperties>
//         </ds:Object>
//     </ds:Signature>
// </collection>
// 

// When I look at the complicated XML above, there are specific things I look at to get a handle
// on the situation.
// 
// 1) Does the signature already embed the public keys required for verification?  
//    Within each <ds:Signature>, look for the <ds:KeyInfo>.  In this case, I can see that
//    each signature contains the full X.509 certificate needed to verify (<ds:KeyInfo><ds:X509Data><ds:X509Certificate>).
//    This means that Chilkat will automatically use the public keys contained within the base64 certificates
//    already present in the signature. 
// 
//  2) Look at each <ds:Reference> within each <ds:Signature>.  Do the URI attribute values begin with "#"?
//     If so, then these are same-document references, and there's no need to explicitly fetch external data for reference verification.
//     Chilkat can automatically validate each same-document Reference.
// 
// So it turns out that this seemingly formidable XML document is easy to verify...
// Here we go...

int i = 0;
while (i < verifier.NumSignatures) {
    // The Selector property is used to set our context to the Nth signature.
    // For example, if VerifySignature is called when Selector = 0, then the 1st signature is verified.
    // If VerifySignature is called when Selector = 1, then the 2nd signature is verified, and so on.
    verifier.Selector = i;

    bool verifyReferenceDigests = true;

    // The quick way to validate all references and the signature over the SignedInfo
    // is to call VerifySignature with verifyReferenceDigests equal to true.
    bool verified = verifier.VerifySignature(verifyReferenceDigests);
    Debug.WriteLine("Signature " + Convert.ToString(i + 1) + " and all reference digests verified = " + Convert.ToString(verified));

    // We can also get information about each signature.
    // For example, we could get information about each Reference...
    // The NumReferences property returns the number of references for the Signature indicated by the Selector property.
    int numReferences = verifier.NumReferences;
    Debug.WriteLine("  number of references: " + Convert.ToString(numReferences));

    int j = 0;
    while (j < numReferences) {
        // Get information about the Jth reference in the Ith signature.
        Debug.WriteLine("  reference " + Convert.ToString(j) + ":");
        // Is this a same-document or external reference?
        Debug.WriteLine("      is external: " + Convert.ToString(verifier.IsReferenceExternal(j)));
        // For external references, the URI could be used by an application to fetch the referenced data...
        Debug.WriteLine("      uri: " + verifier.ReferenceUri(j));
        j = j + 1;
    }

    // We could also get the KeyInfo for each Signature, which might be needed if we need to 
    // load and set a public key that is not physically present within the KeyInfo already.
    Chilkat.Xml keyInfoXml = verifier.GetKeyInfo();
    Debug.WriteLine("  key info: " + keyInfoXml.GetXml());

    i = i + 1;

}

// Here's the output of this example:

// Number of XML signatures = 2
// Signature 1 and all reference digests verified = True
//   number of references: 2
//   reference 0:
//       is external: False
//       uri: #root
//   reference 1:
//       is external: False
//       uri: #xmldsig-ff7d9ad7-f36d-4af0-b21a-7db2e840efad-signedprops
//   key info: 
// <ds:KeyInfo>
//     <ds:X509Data>
//         <ds:X509Certificate>
// MIICbTCCAdqgAwIBAgIQpkK0uals+ItHxBlpJuypOTAJBgUrDgMCHQUAMD8xCzAJBgNVBAYTAlBU
// MQ0wCwYDVQQKEwRJU0VMMQswCQYDVQQLEwJDQzEUMBIGA1UEAxMLSXRlcm1lZGlhdGUwHhcNMTAw
// NjI1MTc1ODQ5WhcNMzkxMjMxMjM1OTU5WjBCMQswCQYDVQQGEwJQVDENMAsGA1UEChMESVNFTDEL
// MAkGA1UECxMCQ0MxFzAVBgNVBAMTDkx1aXMgR29uY2FsdmVzMIGfMA0GCSqGSIb3DQEBAQUAA4GN
// ADCBiQKBgQCpP9acMX69Dbg9ciMLFc5dm1tlpTY9OTNZ/EaCYoGVhh/3+DFgyIbEer6SA24hpREm
// AhNG9+Ca0AurDPPgb3aKWFY9pj1WcOctis0VsR0YvzqP+2IGFqKDCd7bXFvv2tI0dEvpdc0oO6PF
// Q02xvJG0kxQf44XljOCjUBU43jkJawIDAQABo28wbTBrBgNVHQEEZDBigBBdbbL4pDKLT56PpOpA
// /56toTwwOjELMAkGA1UEBhMCUFQxDTALBgNVBAoTBElTRUwxCzAJBgNVBAsTAkNDMQ8wDQYDVQQD
// EwZUZXN0Q0GCEN00x9qe7SuWQvpLK0/oay8wCQYFKw4DAh0FAAOBgQBSma8g9dQjiQo4WUljRRuG
// yMUVRyCqW/9oRz8+0EoLNR/AhrIlGqdNbqQ1BkncgNNdqMAus5VD34v/EhgrkgWN5fZajMpYsmcR
// Ahu4PzJ6hggAlWWMy245JwIYuV0s1Oi39GVTxVNOBIX//AONZlGWO4S2Psb1mqdZ99b/MugsaA==
// </ds:X509Certificate>
//     </ds:X509Data>
// </ds:KeyInfo>
// 
// Signature 2 and all reference digests verified = True
//   number of references: 2
//   reference 0:
//       is external: False
//       uri: #xmldsig-ff7d9ad7-f36d-4af0-b21a-7db2e840efad-sigvalue
//   reference 1:
//       is external: False
//       uri: #xmldsig-7479045c-8083-49eb-9043-1ac2af4a759c-signedprops
//   key info: 
// <ds:KeyInfo>
//     <ds:X509Data>
//         <ds:X509Certificate>
// MIICbTCCAdqgAwIBAgIQpkK0uals+ItHxBlpJuypOTAJBgUrDgMCHQUAMD8xCzAJBgNVBAYTAlBU
// MQ0wCwYDVQQKEwRJU0VMMQswCQYDVQQLEwJDQzEUMBIGA1UEAxMLSXRlcm1lZGlhdGUwHhcNMTAw
// NjI1MTc1ODQ5WhcNMzkxMjMxMjM1OTU5WjBCMQswCQYDVQQGEwJQVDENMAsGA1UEChMESVNFTDEL
// MAkGA1UECxMCQ0MxFzAVBgNVBAMTDkx1aXMgR29uY2FsdmVzMIGfMA0GCSqGSIb3DQEBAQUAA4GN
// ADCBiQKBgQCpP9acMX69Dbg9ciMLFc5dm1tlpTY9OTNZ/EaCYoGVhh/3+DFgyIbEer6SA24hpREm
// AhNG9+Ca0AurDPPgb3aKWFY9pj1WcOctis0VsR0YvzqP+2IGFqKDCd7bXFvv2tI0dEvpdc0oO6PF
// Q02xvJG0kxQf44XljOCjUBU43jkJawIDAQABo28wbTBrBgNVHQEEZDBigBBdbbL4pDKLT56PpOpA
// /56toTwwOjELMAkGA1UEBhMCUFQxDTALBgNVBAoTBElTRUwxCzAJBgNVBAsTAkNDMQ8wDQYDVQQD
// EwZUZXN0Q0GCEN00x9qe7SuWQvpLK0/oay8wCQYFKw4DAh0FAAOBgQBSma8g9dQjiQo4WUljRRuG
// yMUVRyCqW/9oRz8+0EoLNR/AhrIlGqdNbqQ1BkncgNNdqMAus5VD34v/EhgrkgWN5fZajMpYsmcR
// Ahu4PzJ6hggAlWWMy245JwIYuV0s1Oi39GVTxVNOBIX//AONZlGWO4S2Psb1mqdZ99b/MugsaA==
// </ds:X509Certificate>
//     </ds:X509Data>
// </ds:KeyInfo>
// 
//