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wtf is aerogear-otp-java?

fieldju/aerogear-otp-java — explained in plain English

Analysis updated 2026-07-17 · repo last pushed 2016-06-14

★ 1JavaAudience · developerComplexity · 2/5DormantLicenseSetup · easy

TL;DR

A Java library that generates and verifies time-based one-time passwords, letting you add Google Authenticator-style two-factor login to your app.

Mindmap

mindmap
  root((aerogear-otp-java))
    Inputs
      Secret key
      Current time
      User-entered code
    Outputs
      Six digit OTP codes
      QR code secret
      Match verification
    Use Cases
      Add 2FA to login
      Verify user codes
      Generate QR setup
    Tech Stack
      Java
      Maven
      RFC 4226

Code map

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filefunction / class

Why would anyone build with this?

REASON 1

Add two-factor authentication to a Java web app's login flow.

REASON 2

Generate a QR code so users can link their account to Google Authenticator.

REASON 3

Verify a six-digit code a user typed in against the server-generated one.

REASON 4

Add a stronger login security requirement for a banking or SaaS platform.

What's in the stack?

JavaMaven

How it stacks up

fieldju/aerogear-otp-javaakarshsatija/beastalexeygrigorev/codeforces-solutions-java
Stars111
LanguageJavaJavaJava
Last pushed2016-06-142021-02-172020-10-03
MaintenanceDormantDormantDormant
Setup difficultyeasyhardeasy
Complexity2/54/51/5
Audiencedeveloperdatadeveloper

Figures from each repo's GitHub metadata at analysis time.

How do you spin it up?

Difficulty · easy Time to first run · 30min
Use freely for any purpose, including commercial use, as long as you keep the copyright notice.

Yoink these prompts

Prompt 1
Add aerogear-otp-java to my Java project's Maven dependencies and show me how to generate a secret key for a new user.
Prompt 2
Using aerogear-otp-java, write the code to display a QR code so a user can scan it into Google Authenticator.
Prompt 3
Show me how to verify a six-digit OTP code entered by a user with aerogear-otp-java during login.
Prompt 4
Integrate aerogear-otp-java into my Spring Boot login controller to require a 2FA code after password check.

Frequently asked questions

wtf is aerogear-otp-java?

A Java library that generates and verifies time-based one-time passwords, letting you add Google Authenticator-style two-factor login to your app.

What language is aerogear-otp-java written in?

Mainly Java. The stack also includes Java, Maven.

Is aerogear-otp-java actively maintained?

Dormant — no commits in 2+ years (last push 2016-06-14).

What license does aerogear-otp-java use?

Use freely for any purpose, including commercial use, as long as you keep the copyright notice.

How hard is aerogear-otp-java to set up?

Setup difficulty is rated easy, with roughly 30min to a first successful run.

Who is aerogear-otp-java for?

Mainly developer.

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