(Node.js) Subject Alternative Name

Demonstrates the usage of the SubjectAlternativeName property to get the certificate SAN (subject alternative name) as XML.

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOS

var os = require('os');
if (os.platform() == 'win32') {  
  var chilkat = require('@chilkat/ck-node23-win64'); 
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node23-linux-arm');
    } else if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node23-linux-arm64');
    } else {
        var chilkat = require('@chilkat/ck-node23-linux-x64');
    }
} else if (os.platform() == 'darwin') {
  var chilkat = require('@chilkat/ck-node23-mac-universal');
}

function chilkatExample() {

    // Note: Not all certificates contain a Subject Alternative Name.
    // If it does not, the SubjectAlternativeName property will contain the empty string.

    var cert = new chilkat.Cert();

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

    var subjectAltNameXml = cert.SubjectAlternativeName;

    console.log(subjectAltNameXml);

    // Here's a sample of the subjectAltNameXml:

    // <?xml version="1.0" encoding="utf-8"?>
    // <SubjectAltName>
    //     <name type="oid" oid="2.16.76.1.3.4">...</name>
    //     <name type="oid" oid="2.16.76.1.3.2">...</name>
    //     <name type="oid" oid="2.16.76.1.3.3">...</name>
    //     <name type="oid" oid="2.16.76.1.3.7">...</name>
    //     <rfc822Name>...</rfc822Name>
    // </SubjectAltName>

    // The XML can be parsed like this:

    var xml = new chilkat.Xml();

    xml.LoadXml(subjectAltNameXml);

    var oid;
    var name;

    var i = 0;
    var count_i = xml.NumChildrenHavingTag("name");
    while (i < count_i) {
        xml.I = i;
        oid = xml.ChilkatPath("name[i]|(oid)");
        name = xml.GetChildContent("name[i]");
        i = i+1;
    }

    var rfc822Name = xml.GetChildContent("rfc822Name");

}

chilkatExample();