You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
75 lines
2.6 KiB
PHTML
75 lines
2.6 KiB
PHTML
12 years ago
|
<?php
|
||
|
|
/*
|
||
|
|
* Copyright (c) 2011 Le Lag
|
||
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||
|
|
* of this software and associated documentation files (the "Software"), to deal
|
||
|
|
* in the Software without restriction, including without limitation the rights
|
||
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||
|
|
* copies of the Software, and to permit persons to whom the Software is
|
||
|
|
* furnished to do so, subject to the following conditions:
|
||
|
|
*
|
||
|
|
* The above copyright notice and this permission notice shall be included in
|
||
|
|
* all copies or substantial portions of the Software.
|
||
|
|
|
||
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||
|
|
* THE SOFTWARE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
namespace OTPHP {
|
||
|
|
/**
|
||
|
|
* HOTP - One time password generator
|
||
|
|
*
|
||
|
|
* The HOTP class allow for the generation
|
||
|
|
* and verification of one-time password using
|
||
|
|
* the HOTP specified algorithm.
|
||
|
|
*
|
||
|
|
* This class is meant to be compatible with
|
||
|
|
* Google Authenticator
|
||
|
|
*
|
||
|
|
* This class was originally ported from the rotp
|
||
|
|
* ruby library available at https://github.com/mdp/rotp
|
||
|
|
*/
|
||
|
|
class HOTP extends OTP {
|
||
|
|
/**
|
||
|
|
* Get the password for a specific counter value
|
||
|
|
* @param integer $count the counter which is used to
|
||
|
|
* seed the hmac hash function.
|
||
|
|
* @return integer the One Time Password
|
||
|
|
*/
|
||
|
|
public function at($count) {
|
||
|
|
return $this->generateOTP($count);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Verify if a password is valid for a specific counter value
|
||
|
|
*
|
||
|
|
* @param integer $otp the one-time password
|
||
|
|
* @param integer $counter the counter value
|
||
|
|
* @return bool true if the counter is valid, false otherwise
|
||
|
|
*/
|
||
|
|
public function verify($otp, $counter) {
|
||
|
|
return ($otp == $this->at($counter));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the uri for a specific secret for hotp method.
|
||
|
|
* Can be encoded as a image for simple configuration in
|
||
|
|
* Google Authenticator.
|
||
|
|
*
|
||
|
|
* @param string $name the name of the account / profile
|
||
|
|
* @param integer $initial_count the initial counter
|
||
|
|
* @return string the uri for the hmac secret
|
||
|
|
*/
|
||
|
|
public function provisioning_uri($name, $initial_count) {
|
||
|
|
return "otpauth://hotp/".urlencode($name)."?secret={$this->secret}&counter=$initial_count";
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|