Node.js

Generate TOTP using Base32 Secret (6 Digits, Time-based, 30-second period)

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Generates a 6-digit time-based TOTP code using a base32 secret with a 30-second time period. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.
    // 
    var crypt = new chilkat.Crypt2();

    // Base32 secret key:
    var secretKey = "oebf ytfl qmzb p4xd 2ztf zyz4 hjrw 3uyo";

    var sbKey = new chilkat.StringBuilder();
    success = sbKey.Append(secretKey);

    // Remove SPACE chars.
    var numRemoved = sbKey.Replace(" ","");

    // Note: A new token is generated every 30 seconds.  You must generate within the same 30 second interval to get the same result.

    // Generate 6 digits.
    var numDigits = 6;
    // 30 second time period.
    var timePeriod = 30;
    console.log("Your token is: " + crypt.Totp(sbKey.GetAsString(),"base32","0","",timePeriod,numDigits,-1,"sha1"));

}

chilkatExample();