@ppg007/otp NPM

otp

This repository implements TOTP and HOTP generation that defined in RFC6238 and RFC4226。

Install

use npm:

npm install @ppg007/otp

use yarn:

yarn add @ppg007/otp

TOTP

import { totp } from '@ppg007/otp';

const genTOTP = (): string => {
  return totp({
    digits: 6,
    period: 30,
    algorithm: 'SHA-1',
    secret: 'secret key',
  });
};

HOTP

import { hotp } from '@ppg007/otp';

const genHOTP = (counter: number): string => {
  return hotp({
    digits: 6,
    counter,
    algorithm: 'SHA-1',
    secret: 'secret key',
  });
};

Options

Common Options:

Option	Type	Describe	Values
algorithm	string	the hash algorithm usage when calculate the otp	'SHA-1', 'SHA-256', 'SHA-512'; default value is 'SHA-1'
digits	number	the otp length	default value is 6, some 2FA App only support 6 length OTP
secret	string	the hash secret key	must be a base32 encoded string

TOTP Options:

Option	Type	Describe	Values
period	number	the TOTP valid period second	default value 30, some 2FA App only support 30s

HOTP Options:

Option	Type	Describe	Values
counter	number	the HOTP counter initial value	default value is 0

jssha

@everything-registry/sub-chunk-734

1.1.0

5 months ago

1.0.0

5 months ago