JavaScript

Get Certificate User Principal Name (UPN)

See more Certificates Examples

Demonstrates how to get a certificate's UPN from the SAN (Subject Alternative Name). Most certificates do not have a UPN. This example only applies to those certificates that have a User Principal Name.

Note: This example requires Chilkat v9.5.0.90 or greater due to fixes made in getting the UPN from the SAN.

JavaScript

var success = false;

var cert = new CkCert();

success = cert.LoadFromFile("qa_data/certs/sample.cer");
if (success == false) {
    console.log(cert.LastErrorText);
    return;
}

var xml = new CkXml();
xml.LoadXml(cert.SubjectAlternativeName);
console.log(xml.GetXml());

// A certificate with a User Principal Name in the SAN might have this:

// <SubjectAltName>
//     <rfc822Name>joe@example.com</rfc822Name>
//     <name type="oid" oid="1.3.6.1.4.1.311.20.2.3">joe@example.com</name>
// </SubjectAltName>

// The OID 1.3.6.1.4.1.311.20.2.3 is for the User Principal Name.
var upn = xml.ChilkatPath("/A/name,oid,1.3.6.1.4.1.311.20.2.3|*");
if (xml.LastMethodSuccess == false) {
    console.log("No user principle name.");
}
else {
    console.log("User Principle Name = " + upn);
}