[Unmaintained] Open source two-factor authentication for Android

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

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

🔒 Keycloak Authentication Provider implementation to get a two factor authentication with a OTP/code/token send via Email (through SMTP)

Vonage Server SDK for Java. API support for SMS, Messages, Voice, Text-to-Speech, Numbers, Verify (2FA), Video and more.

Spring Security Login with Google Authenticator (Time-based One-time Password Algorithm, TOTP)

TOTP and HOTP Token for Andriod Devices

SMS 2 Factor Authentication for Keycloak via AWS SNS

Burp Suite plugin that dynamically generates Google 2FA codes for use in session handling rules (approved by PortSwigger for inclusion in their official BApp Store).

Open Source 2FA app based on the Open Source Google Authenticator app

微信支付宝支付二维码生成

Android OTP Authenticator App for privacyIDEA Authentication Server

🔥两步验证Demo（two-factor authentication）与Google的两步验证工具保持一致

Example for implementing two factor authentication in Android using Twilio's Authy API and firebase. | TUTORIAL : https://pragmatictheories.tech/android-implementing-two-step-authentication-through-google-authenticator/

A system that assists students in selecting their courses in a smarter way

Time-based One-Time Password two factor authentication for Alfresco

Centralized Two-Phase Locking

Two Factor Auth OTP Code generation demo by Java (powered by "aerogear-otp-java")

Spring Boot application with OAuth2 and multi-factor authentication

This repository is for Jenkins two factor plugin.