(Node.js) Binary Certificate Extension Data

See more Certificates Examples

The GetExtensionBd method is added in Chilkat v9.5.0.96.

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() {

    var cert = new chilkat.Cert();

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

    var bd = new chilkat.BinData();

    // The particular certificate in this test contains the following extensions

    var oid = "1.2.250.1.71.1.2.5";
    success = cert.GetExtensionBd(oid,bd);
    if (success == true) {
        console.log(oid + ": " + bd.GetEncoded("hex_lower"));
    }

    oid = "1.2.250.1.71.1.2.2";
    success = cert.GetExtensionBd(oid,bd);
    if (success == true) {
        console.log(oid + ": " + bd.GetEncoded("hex_lower"));
    }

    oid = "1.2.250.1.71.1.2.3";
    success = cert.GetExtensionBd(oid,bd);
    if (success == true) {
        console.log(oid + ": " + bd.GetEncoded("hex_lower"));
    }

    oid = "1.2.250.1.71.1.2.7";
    success = cert.GetExtensionBd(oid,bd);
    if (success == true) {
        console.log(oid + ": " + bd.GetEncoded("hex_lower"));
    }

    oid = "1.2.250.1.71.4.2.5";
    success = cert.GetExtensionBd(oid,bd);
    if (success == true) {
        console.log(oid + ": " + bd.GetEncoded("hex_lower"));
    }

    // Sample output:
    // 1.2.250.1.71.1.2.5: 040180
    // 1.2.250.1.71.1.2.2: 020100
    // 1.2.250.1.71.1.2.3: 1315383032353030303030312f32393030303539313432
    // 1.2.250.1.71.1.2.7: 02010a
    // 1.2.250.1.71.4.2.5: 30060c04534d3236

    // The above binary values are actually ASN.1
    // You can get the ASN.1 decoed by calling GetExtensionAsXml to get it in XML format,
    // and then you extract the values from the XML.

    oid = "1.2.250.1.71.1.2.5";
    var strXml = cert.GetExtensionAsXml(oid);
    if (cert.LastMethodSuccess == true) {
        console.log(oid + ": " + strXml);
    }

    oid = "1.2.250.1.71.1.2.2";
    strXml = cert.GetExtensionAsXml(oid);
    if (cert.LastMethodSuccess == true) {
        console.log(oid + ": " + strXml);
    }

    oid = "1.2.250.1.71.1.2.3";
    strXml = cert.GetExtensionAsXml(oid);
    if (cert.LastMethodSuccess == true) {
        console.log(oid + ": " + strXml);
    }

    oid = "1.2.250.1.71.1.2.7";
    strXml = cert.GetExtensionAsXml(oid);
    if (cert.LastMethodSuccess == true) {
        console.log(oid + ": " + strXml);
    }

    oid = "1.2.250.1.71.4.2.5";
    strXml = cert.GetExtensionAsXml(oid);
    if (cert.LastMethodSuccess == true) {
        console.log(oid + ": " + strXml);
    }

    // Sample output:
    // 1.2.250.1.71.1.2.5: <octets>gA==</octets>
    // 1.2.250.1.71.1.2.2: <int>00</int>
    // 1.2.250.1.71.1.2.3: <printable>8025000001/2900059142</printable>
    // 1.2.250.1.71.1.2.7: <int>0A</int>
    // 1.2.250.1.71.4.2.5: <sequence><utf8>SM26</utf8></sequence>

    // "gA==" is the base64 encoded byte values
    // "0A" is hex for decimal 1

}

chilkatExample();