Node.js

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. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

    var asn = new chilkat.Asn();

    //  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 chilkat.Xml();
    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 chilkat.Asn();
    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 chilkat.Asn();
    success = asn3.LoadEncoded(strBase64,"base64");
    if (success !== true) {
        console.log(asn3.LastErrorText);
        return;
    }


}

chilkatExample();