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178 search results found

Aegis ⭐ 6,970

A free, secure and open source app for Android to manage your 2-step verification tokens.

Andotp ⭐ 3,745

[Unmaintained] Open source two-factor authentication for Android

Pyotp ⭐ 2,812

Python One-Time Password Library

Speakeasy ⭐ 2,660

**NOT MAINTAINED** Two-factor authentication for Node.js. One-time passcode generator (HOTP/TOTP) with support for Google Authenticator.

Authenticatorpro ⭐ 2,207

📱 Two-Factor Authentication (2FA) client for Android + Wear OS

TOTP library for Go

Google Authenticator Libpam ⭐ 1,639

Otplib ⭐ 1,558

🔑 One Time Password (OTP) / 2FA for Node.js and Browser - Supports HOTP, TOTP and Google Authenticator

Privacyidea ⭐ 1,407

🔐 multi factor authentication system (2FA, MFA, OTP Server)

2fauth ⭐ 1,290

A Web app to manage your Two-Factor Authentication (2FA) accounts and generate their security codes

Freeotp Android ⭐ 1,280

Mintotp ⭐ 1,258

Minimal TOTP generator in 20 lines of Python

Otphp ⭐ 1,224

🔐 A PHP library for generating one time passwords according to RFC 4226 (HOTP) and the RFC 6238 (TOTP)

Otp.net ⭐ 917

A .NET implementation of TOTP and HOTP for things like two-factor authentication codes.

Otpauth ⭐ 812

One Time Password (HOTP/TOTP) library for Node.js, Deno, Bun and browsers.

Node One Time Password library, supports HOTP, TOTP and works with Google Authenticator

Freeotp Ios ⭐ 617

Freeotpplus ⭐ 565

Enhanced fork of FreeOTP-Android providing a feature-rich 2FA authenticator

Go Guardian ⭐ 507

Go-Guardian is a golang library that provides a simple, clean, and idiomatic way to create powerful modern API and web authentication.

Glewlwyd ⭐ 419

Experimental Single Sign On server, OAuth2, Openid Connect, multiple factor authentication with, HOTP/TOTP, FIDO2, TLS Certificates, etc. extensible via plugins

Otpclient ⭐ 409

Highly secure and easy to use OTP client written in C/GTK3 that supports both TOTP and HOTP

Flipper Zero_authenticator ⭐ 406

Software-based TOTP/HOTP authenticator for Flipper Zero device.

Java Otp ⭐ 361

A one-time password (HOTP/TOTP) library for Java

Dgoogauth ⭐ 319

Google Authenticator for Go

Onetimepassword ⭐ 310

🔑 A small library for generating TOTP and HOTP one-time passwords on iOS.

Multiotp ⭐ 295

multiOTP open source strong two factor authentication PHP library, OATH certified, with TOTP, HOTP, Mobile-OTP, YubiKey, SMS, QRcode provisioning, etc.

A Material You Two-factor Authentication app

Libreauth ⭐ 267

LibreAuth is a collection of tools for user authentication.

Openvpn Otp ⭐ 253

OpenVPN OTP token support plugin

POT is an Erlang library for generating Google Authenticator compatible one time passwords

Swiftotp ⭐ 227

A Swift library for generating One Time Passwords (OTP)

A Command Line OTP Authenticator application.

Yubikey Manager Qt ⭐ 194

Cross-platform application for configuring any YubiKey over all USB interfaces.

Package go-otp implements one-time-password generators used in 2-factor authentication systems like RSA-tokens. Currently this supports both HOTP (RFC-4226), TOTP (RFC-6238) and Base32 encoding (RFC-3548) for Google Authenticator compatibility

Multiotpcredentialprovider ⭐ 187

multiOTP Credential Provider is a V2 Credential Provider for Windows 7/8/8.1/10/2012(R2)/2016 with options like RDP only and UPN name support

100% Javascript Implementation of HOTP and TOTP for Two-Factor Authentication.

Otp Java ⭐ 162

A small and easy-to-use one-time password generator library for Java implementing RFC 4226 (HOTP) and RFC 6238 (TOTP).

One Time ⭐ 145

One Time Password (TOTP and HOTP) library for Clojure. TOTP/HOTP is widely used for Two Factor / Multi Factor Authentication.

Twostepsauthenticator ⭐ 140

.net implementation of the Time-Based One-Time Password Algorithm (TOTP) RFC 6238

Trustworthy, encrypted, command-line TOTP/HOTP authenticator app with import functionality.

Library to generate TOTP/HOTP codes

Go implementation of RFC 4226 OATH-HOTP authentication.

Node.js TOTP + HOTP library, with nice utilities for handing 2FA

Python Oath ⭐ 121

Python implementation of HOTP, TOTP and OCRA algorithms from OATH

a2fa is a command line tool for generating and validating one-time password. Its purpose is to get rid of phones and be able to authenticate easily.

Kotlin Onetimepassword ⭐ 95

A Kotlin one-time password library to generate "Google Authenticator", "Time-based One-time Password" (TOTP) and "HMAC-based One-time Password" (HOTP) codes based on RFC 4226 and 6238.

QR Code encoder in Erlang

HMAC-based (HOTP) and Time-based (TOTP) One-Time Password manager. Works with Google Authenticator for Two-Factor Authentication.

A comprehensive Node.js package that simplifies the implementation of One-Time Password (OTP).

Magento Two Factor Authentication ⭐ 75

Should be time-based or counter-based (HOTP/TOTP), and support the Google Authenticator mobile app.

Apache_2fa ⭐ 68

Apache two-factor (2FA) authentication with Google Authenticator based on Time-based One-Time Password (TOTP) or HMAC-based one-time password (HOTP) Algorithms.

Libnitrokey ⭐ 64

Communicate with Nitrokey devices in a clean and easy manner

Androidtoken ⭐ 63

TOTP and HOTP Token for Andriod Devices

Javascript One-Time Password module.

Lightweight, thread-safe Java/Kotlin TOTP (time-based one-time passwords) and HOTP generator and validator for multi-factor authentication valid for both prover and verifier based on shared secret

C library that generates TOTP and HOTP

Onetrickpony ⭐ 57

OneTrickPony is a modern Java library that implements support for One-Time Passwords. Built-In support is provided for the HOTP (RFC 4226) and TOTP (RFC 6238) algorithms.

Open Otp ⭐ 56

Kotlin Multiplatform implementation of One Time Passwords Manager that compiles to native code on all platforms from single codebase

Ykneo Oath ⭐ 52

OATH App for the YubiKey NEO

CrOTP - One Time Passwords for Crystal

Hotp Php ⭐ 51

HMAC Based One Time Passwords in PHP. RFC4226 and RFC6238 compliant.

OATH HOTP/TOTP implementation in python

Rust Otp ⭐ 48

A Rust library for performing the HMAC-based One-Time Password (HOTP) and Time-based One-Time Password (TOTP) algorithms.

Awesome Yubikey ⭐ 46

Curated list of awesome Yubikey resources, open source projects, tools and tutorials.

🎲TOTP(Time-based one-time password) generator, support for Google Authenticator

Login_otp ⭐ 41

OTP authentication for OpenBSD implementing RFC 6238 and RFC 4226.

One-time password / multi-factor authentication library for PHP.

Tick Authenticator ⭐ 39

📟Time-based One-time Password (TOTP) algorithm specified in RFC 6238.

Otp Authenticator Android ⭐ 39

Rych Otp ⭐ 38

OATH-HOTP implementation for PHP

User Otp ⭐ 38

OTP Backend for owncloud

Boringauth ⭐ 35

Straightforward password, passphrase, TOTP, and HOTP user authentication

A Java-based OATH toolkit providing components for building one-time password authentication systems.

Php Totp ⭐ 33

HOTP and TOTP token generation

2fa Library ⭐ 32

2 Factor Authentication (2FA) library

Duolibre ⭐ 32

Authenticate to Duo 2FA systems without the Duo Mobile app

Authenticator ⭐ 31

A HOTP/TOTP command line client for generating two-factor and multi-factor authentication codes, like Google Authenticator.

Flipper Zero_authenticator Companion ⭐ 30

Companion application for Flipper Authenticator software-based TOTP/HOTP authenticator for Flipper Zero device.

Php Authenticator ⭐ 28

A generator for counter- and time based authentication codes (RFC-4226/RFC-6238, Google Authenticator).

Erl Hotp ⭐ 26

HOTP and TOTP algorithms in Erlang.

Oath.net ⭐ 24

A small library that implements the HOTP and TOTP algorithms for two-factor authentication. Compatible with the Google Authenticator app for iPhone and Android.

Keysmith ⭐ 22

OTP client for Plasma Mobile and Desktop

Botan Rs ⭐ 22

🦐 Rust cryptography library

Pure Swift implementation of one-time password algorithms.

HOTP / TOTP pure C implementation

A simple Javascript HOTP implementation (HMAC-Based One-Time Password Algorithm) as described in RFC 4226. The library relies on crypto-js (http://code.google.com/p/crypto-js/) for the javascript HMAC-SHA1 implementation.

A simple implementation of OATH-HOTP and OATH-TOTP written for Lua

Diglol Crypto for Kotlin Multiplatform.

making otp simpler by involving gpg

OATH (TOTP, HOTP), U2F & WebAuthN Implementation in Rust

Security ⭐ 18

Security tools for PHP

Otpauth Rs ⭐ 17

Two-step verification of HOTP/TOTP for Rust.

Speakeasy ⭐ 16

Two-factor authentication for Node.js. Generate One-time passcode generator (HOTP/TOTP) with support for Google Authenticator.

Polyseme ⭐ 16

An implementation of HOTP Indexed DNS

Bolos App Otp2fa ⭐ 16

Time-Based One-Time Password (TOTP) and HMAC-Based One-Time Password (HOTP) library for Go.

Pyoath Toolkit ⭐ 16

Python bindings for the OATH Toolkit library (one-time password generation/verification).

React Native Authenticator ⭐ 16

This is a react native app with some functionalities similar to Google Authenticator

Hotp_via_ndef ⭐ 15

Implementation of HMAC-based One Time Passwords via URL tag of NDEF applet

Otpmanager Nextcloud ⭐ 15

Nextcloud app that allows you to manage your OTP (TOTP/HOTP) codes easily

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