Class flAuthTOTP

flAuthTOTP Class

Class to implement TOTP (Time-based One Time Password) authentication. The codes generated are compatiable with Google Authenticator.

Package: fusionLib
Copyright: Copyright (c) 2015 fusionLib. All rights reserved.
Located at system/libs/Auth/flAuthTOTP.php

Methods summary

`public static string`	# `generateSecret( )` Generates a 16 digit secret key in base32 format Generates a 16 digit secret key in base32 format Returns string The secret.
`public static string`	# `getQRCode( string $name, string $secret, $size = 150 )` Get QR-Code URI by using google charts Get QR-Code URI by using google charts Parameters `$name` The name to associate with the secret. `$secret` The secret key. `$size` Returns string The URI for the QR code.
`public static string`	# `getCode( string $secret, integer $timeSlice = null )` Calculate the code, with given secret and point in time Calculate the code, with given secret and point in time Parameters `$secret` The secret key. `$timeSlice` The time slice or null for the current time. Returns string The 6 digit code.
`public static boolean`	# `verifyCode( string $secret, string $code, integer $discrepancy = 1 )` Check if the code is correct. This will accept codes starting from $discrepancy30sec ago to $discrepancy30sec from now Check if the code is correct. This will accept codes starting from $discrepancy30sec ago to $discrepancy30sec from now Parameters `$secret` The secret. `$code` The code to verify. `$discrepancy` This is the allowed time drift in 30 second units (8 means 4 minutes before or after) Returns boolean true if code is valid; else false.
`protected static string`	# `base32Decode( string $b32 )` Decodes a base32 string into a binary string. Decodes a base32 string into a binary string. Parameters `$b32` Base 32 string. Returns string The decoded value. Throws Exception

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Class flAuthTOTP

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