otp • Collection of one-time password algorithms

Supported Algorithms

• HOTP
• TOTP
• SteamTOTP

Usage

import {otpauth, totp, toptValidate} from "@maks11060/otp"

const secret = crypto.getRandomValues(new Uint8Array(20))

// Generate totp code
const code = await totp({secret}) // 123456

// Validate totp with time window
await toptValidate({secret, code}) // true

// Create otpauth uri
otpauth({secret, issuer: 'App name', label: '@user'}).toString()
// otpauth://totp/lable?secret=00&algorithm=SHA1&issuer=App+name

Use Readable

import {readableTotp} from '@maks11060/otp/readable'

const secret = crypto.getRandomValues(new Uint8Array(20))
for await (const otp of readableTotp({secret})) {
  console.log(otp)
}

Supported apps

Apps	Algs	Period	Digits
Google Authenticator	SHA1	30	6
Microsoft Authenticator	SHA1	30	6