JavaScript

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

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

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.

JavaScript

var success = false;

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
// 
var crypt = new CkCrypt2();

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

var sbKey = new CkStringBuilder();
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"));