diff options
Diffstat (limited to 'plugins/google-authenticator/base32.php')
-rw-r--r-- | plugins/google-authenticator/base32.php | 82 |
1 files changed, 0 insertions, 82 deletions
diff --git a/plugins/google-authenticator/base32.php b/plugins/google-authenticator/base32.php deleted file mode 100644 index 91bd93e9..00000000 --- a/plugins/google-authenticator/base32.php +++ /dev/null @@ -1,82 +0,0 @@ -<?php
-
-/**
- * Encode in Base32 based on RFC 4648.
- * Requires 20% more space than base64
- * Great for case-insensitive filesystems like Windows and URL's (except for = char which can be excluded using the pad option for urls)
- *
- * @package default
- * @author Bryan Ruiz
- **/
-class Base32 {
-
- private static $map = array(
- 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', // 7
- 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', // 15
- 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', // 23
- 'Y', 'Z', '2', '3', '4', '5', '6', '7', // 31
- '=' // padding char
- );
-
- private static $flippedMap = array(
- 'A'=>'0', 'B'=>'1', 'C'=>'2', 'D'=>'3', 'E'=>'4', 'F'=>'5', 'G'=>'6', 'H'=>'7',
- 'I'=>'8', 'J'=>'9', 'K'=>'10', 'L'=>'11', 'M'=>'12', 'N'=>'13', 'O'=>'14', 'P'=>'15',
- 'Q'=>'16', 'R'=>'17', 'S'=>'18', 'T'=>'19', 'U'=>'20', 'V'=>'21', 'W'=>'22', 'X'=>'23',
- 'Y'=>'24', 'Z'=>'25', '2'=>'26', '3'=>'27', '4'=>'28', '5'=>'29', '6'=>'30', '7'=>'31'
- );
-
- /**
- * Use padding false when encoding for urls
- *
- * @return base32 encoded string
- * @author Bryan Ruiz
- **/
- public static function encode($input, $padding = true) {
- if(empty($input)) return "";
- $input = str_split($input);
- $binaryString = "";
- for($i = 0; $i < count($input); $i++) {
- $binaryString .= str_pad(base_convert(ord($input[$i]), 10, 2), 8, '0', STR_PAD_LEFT);
- }
- $fiveBitBinaryArray = str_split($binaryString, 5);
- $base32 = "";
- $i=0;
- while($i < count($fiveBitBinaryArray)) {
- $base32 .= self::$map[base_convert(str_pad($fiveBitBinaryArray[$i], 5,'0'), 2, 10)];
- $i++;
- }
- if($padding && ($x = strlen($binaryString) % 40) != 0) {
- if($x == 8) $base32 .= str_repeat(self::$map[32], 6);
- else if($x == 16) $base32 .= str_repeat(self::$map[32], 4);
- else if($x == 24) $base32 .= str_repeat(self::$map[32], 3);
- else if($x == 32) $base32 .= self::$map[32];
- }
- return $base32;
- }
-
- public static function decode($input) {
- if(empty($input)) return;
- $paddingCharCount = substr_count($input, self::$map[32]);
- $allowedValues = array(6,4,3,1,0);
- if(!in_array($paddingCharCount, $allowedValues)) return false;
- for($i=0; $i<4; $i++){
- if($paddingCharCount == $allowedValues[$i] &&
- substr($input, -($allowedValues[$i])) != str_repeat(self::$map[32], $allowedValues[$i])) return false;
- }
- $input = str_replace('=','', $input);
- $input = str_split($input);
- $binaryString = "";
- for($i=0; $i < count($input); $i = $i+8) {
- $x = "";
- if(!in_array($input[$i], self::$map)) return false;
- for($j=0; $j < 8; $j++) {
- $x .= str_pad(base_convert(@self::$flippedMap[@$input[$i + $j]], 10, 2), 5, '0', STR_PAD_LEFT);
- }
- $eightBits = str_split($x, 8);
- for($z = 0; $z < count($eightBits); $z++) {
- $binaryString .= ( ($y = chr(base_convert($eightBits[$z], 2, 10))) || ord($y) == 48 ) ? $y:"";
- }
- }
- return $binaryString;
- }
-}
\ No newline at end of file |