(JavaScript) Convert ASN.1 to/from Binary DER, XML, and Base64

Demonstrates how to convert ASN.1 from and to any of the following formats: binary DER, Base64, and XML.

Note

This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.

var success = false;

var asn = new CkAsn();

// Begin with loading ASN.1 from a binary DER/BER format file.
success = asn.LoadBinaryFile("/Users/chilkat/testData/p7b/test.p7b");
if (success !== true) {
    console.log(asn.LastErrorText);
    return;
}

// Convert ASN.1 to XML:
var strXml = asn.AsnToXml();
if (asn.LastMethodSuccess !== true) {
    console.log(asn.LastErrorText);
    return;
}

// The XML returned by AsnToXml will be compact and not pretty-formatted.
// Use Chilkat XML to format the XML better:
var xml = new CkXml();
success = xml.LoadXml(strXml);
// Assuming success for this example..
// This is formatted better for human viewing:
console.log(xml.GetXml());

// Now get the ASN.1 in base64 format.  Any encoding supported
// by Chilkat can be passed, such as "hex", "uu", "quoted-printable", "base32", "modbase64", etc.
var strBase64 = asn.GetEncodedDer("base64");

// Load the ASN.1 from XML:
var asn2 = new CkAsn();
success = asn2.LoadAsnXml(xml.GetXml());
if (success !== true) {
    console.log(asn2.LastErrorText);
    return;
}

// Load the ASN.1 from an encoded string, such as base64:
var asn3 = new CkAsn();
success = asn3.LoadEncoded(strBase64,"base64");
if (success !== true) {
    console.log(asn3.LastErrorText);
    return;
}