HOTP simplifies One Time Password systems for PHP Authentication

v1.0.1 2019-04-17 19:06 UTC

This package is not auto-updated.

Last update: 2020-10-19 15:21:29 UTC


What is HOTP: HOTP is a class that simplifies One Time Password systems for PHP Authentication. The HOTP/TOTP Algorithms have been around for a bit, so this is a straightforward class to meet the test vector requirements.

What works with HOTP/TOTP: It's been tested to the test vectors, and I've verified the time-sync hashes against the following:

  • Android: Mobile-OTP
  • iPhone: OATH Token

Why would I use this: Who wouldn't love a simple drop-in class for HMAC Based One Time Passwords? It's a great extra layer of security (creating two-factor auth) and it's pretty darn zippy.

Okay you sold me. Give me some docs:

use jakobo\HOTP\HOTP;

$result = HOTP::generateByCounter( $key, $counter ); // event based

$result = HOTP::generateByTime( $key, $window ); // time based within a "window" of time
$result = HOTP::generateByTimeWindow( $key, $window, $min, $max ); // same as generateByTime, but for $min windows before and $max windows after

with $result, you can do all sorts of neat things...




$result->toHotp( $length ); // how many digits in your OTP?