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scala-totp-auth

Build Status

This is a scala object that implements RFC 6238 time based one time passwords. The HOTP protocol is identical except that timing is not used to select OTPs. scala-totp-auth exists to make it easy to integrate totp into one of my Play 2.0 applications. Target portable device runs Google Authenticator.

Sample login code

//Retrieve the user's secret from the db
//retrieve the pin that the user entered from their device

val ok =Authenticator.pinMatchesSecret(userPin,TOTPSecret(base32Secret))
...

API

Take a look at the scaladoc

Running

Check out the project

Type sbt run

Reference Implementation

The Refererence Implementation is in the test sources. scala-totp-auth's behaviour should exactly match the RI. There are a few tests that check this.

If you find any differences please file an issue.

If you think some behaviour should be different from the RI be prepared to motivate your proposal very well.

Test

sbt test

[info] Running Authenticator 

http://google-authenticator.googlecode.com/git/libpam/totp.html to check results

Base32 secret:RM26TUEIDMURGOPL Hex secret:8b35e9d0881b291339eb

Time    : OTP
--------:--------
44699054: 680139
44699055: 956581
44699056: 553109
44699057: 338225
44699058: 450979
44699059: 735724
44699060: 027563
44699061: 941682
44699062: 338183
44699063: 799711
44699064: 061042

How to use it in my project?

There's an

Or build it from source. There is only one class and two objects.