jOTP

A node module for generating TOTP base on implementation of https://tools.ietf.org/html/rfc6238. This will produce thesame OTP with other implemented languages here listed.

Usage

install via npm
npm install jotp

Generate Time-One Time Password(TOTP) as follow. The below approach uses timestamp

    var otp = require('jOTP');

    The below approach uses timestamp

    var secretKey = 'secretKey';  // The key to use in computing OTP. Keep this secret as possible, It should be considered a private key betwwen server and client. Hence will be use for OTP validations
    var x = 0; // Specify start time for OTP Calculation
    var expiry = 30; // Specify the time in future which OTP will be valid for
    var time_in = otp.TIME_IN_SECONDS; // Specify expiry of OTP in seconds, milliseconds, minutes, etc
    var otpCodeDigit = 6; // Specify number of character to obtain as OTP

    // var otpToken = otp.tOTP('secretKey', 0, 30, otp.TIME_IN_SECONDS, 6);
    var otpToken = otp.tOTP(secretKey, x, expiry, time_in, otpCodeDigit);
    console.log(otpToken);


    You can explicitly specify the time you want OTP to be computed for as follow.

    //var otpToken = otp.tOTPTime('secretKey', new Date().getTime(), 0, 30, otp.TIME_IN_SECONDS, 6);
    var otpToken = otp.tOTPTime(secretKey, new Date().getTime(), x, expiry, time_in, otpCodeDigit);
    console.log(otpToken);

All issues and pull request should be submitted to jOTP

Author

Joshua Aroke (Olyjosh)

Implemetation of

• https://tools.ietf.org/html/rfc6238

MIT License

Copyright (c) 2017 olyjosh

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.