Google Authenticator Lib for java

##Installation ###Maven

<dependency>
	<groupId>hu.meza.tools</groupId>
	<artifactId>galib</artifactId>
	<version>1.1.0</version>
</dependency>

###sbt

"hu.meza.tools" % "galib" % "1.1.0"

##Usage

###Generate passcode

GoogleAuthenticator ga = new GoogleAuthenticator();
String passCode = ga.getCode("your secret key");

###Verify passcode

GoogleAuthenticator ga = new GoogleAuthenticator();
boolean isValid = ga.isValidCode("your secret key", "code to test for validity");

###Using custom time Sometimes it comes in handy to be able to use your own implementation of time. Especially when you're aiming for testability and maintainability. For this reason, you can tell the library where to get the time from, by implementing a class to the hu.meza.tools.galib.Clock interface. The only thing you should be aware of, that you need to return EPOCH time. In java terms this means you need to DIVIDE the timeInMillis by 1000;

Once you have yor clock implementation, you can pass it in as a constructor parameter:

Clock myClockImpl = new MyOwnClockImplementation();
GoogleAuthenticator ga = new GoogleAuthenticator(myClockImpl);

##Obtaining your secret key for google logins Open your security settings and start setting up a new android device for 2 step verification.

When prompted to scan a barcode, scan it with a regular barcode scanner. It will hold a URI with a query parameter called "secret". You're looking for the value of that key.

More here

legart/galib

Google Authenticator Lib for java