totp-generator
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1.0.0 • Public • Published

totp-generator

Test Test Coverage npm Version

totp-generator lets you generate TOTP tokens from a TOTP key

How to use

import { TOTP } from "totp-generator"

// Keys provided must be base32 strings, ie. only containing characters matching (A-Z, 2-7, =).
const { otp, expires } = TOTP.generate("JBSWY3DPEHPK3PXP")

console.log(otp) // prints a 6-digit time-based token based on provided key and current time

Default token settings

  • SHA-1
  • 30-second epoch interval
  • 6-digit tokens

Custom token settings

Settings can be provided as an optional second parameter:

import { TOTP } from "totp-generator"

const { otp } = TOTP.generate("JBSWY3DPEHPK3PXP", { digits: 8 })
console.log(token) // prints an 8-digit token

const { otp } = TOTP.generate("JBSWY3DPEHPK3PXP", { algorithm: "SHA-512" })
console.log(token) // prints a token created using a different algorithm

const { otp } = TOTP.generate("JBSWY3DPEHPK3PXP", { period: 60 })
console.log(token) // prints a token using a 60-second epoch interval

const { otp } = TOTP.generate("JBSWY3DPEHPK3PXP", { timestamp: 1465324707000 })
console.log(token) // prints a token for given time

const { otp } = TOTP.generate("JBSWY3DPEHPK3PXP", {
	digits: 8,
	algorithm: "SHA-512",
	period: 60,
	timestamp: 1465324707000,
})
console.log(token) // prints a token using all custom settings combined

What do I use this library for?

  • TOTP generation
  • E2E tests (where you need to login with 2-factor authentication)

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Install

npm i totp-generator

Weekly Downloads

150,483

Version

1.0.0

License

MIT

Unpacked Size

16.2 kB

Total Files

11

Last publish

Collaborators

  • bellstrand