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-rw-r--r--system/libraries/Sha1.php292
1 files changed, 146 insertions, 146 deletions
diff --git a/system/libraries/Sha1.php b/system/libraries/Sha1.php
index 971c091ad..4dde04038 100644
--- a/system/libraries/Sha1.php
+++ b/system/libraries/Sha1.php
@@ -7,35 +7,35 @@
* @package CodeIgniter
* @author Rick Ellis
* @copyright Copyright (c) 2006, pMachine, Inc.
- * @license http://www.codeignitor.com/user_guide/license.html
+ * @license http://www.codeignitor.com/user_guide/license.html
* @link http://www.codeigniter.com
* @since Version 1.0
* @filesource
*/
-
+
// ------------------------------------------------------------------------
/**
* SHA1 Encoding Class
*
- * Purpose: Provides 160 bit hashing using The Secure Hash Algorithm
- * developed at the National Institute of Standards and Technology. The 40
+ * Purpose: Provides 160 bit hashing using The Secure Hash Algorithm
+ * developed at the National Institute of Standards and Technology. The 40
* character SHA1 message hash is computationally infeasible to crack.
- *
- * This class is a fallback for servers that are not running PHP greater than
+ *
+ * This class is a fallback for servers that are not running PHP greater than
* 4.3, or do not have the MHASH library.
*
* This class is based on two scripts:
- *
- * Marcus Campbell's PHP implementation (GNU license)
+ *
+ * Marcus Campbell's PHP implementation (GNU license)
* http://www.tecknik.net/sha-1/
*
- * ...which is based on Paul Johnston's JavaScript version
+ * ...which is based on Paul Johnston's JavaScript version
* (BSD license). http://pajhome.org.uk/
- *
+ *
* I encapsulated the functions and wrote one additional method to fix
* a hex conversion bug. - Rick Ellis
- *
+ *
* @package CodeIgniter
* @subpackage Libraries
* @category Encryption
@@ -56,67 +56,67 @@ class CI_SHA {
* @param string
* @return string
*/
- function generate($str)
- {
- $n = ((strlen($str) + 8) >> 6) + 1;
-
- for ($i = 0; $i < $n * 16; $i++)
- {
- $x[$i] = 0;
- }
-
- for ($i = 0; $i < strlen($str); $i++)
- {
- $x[$i >> 2] |= ord(substr($str, $i, 1)) << (24 - ($i % 4) * 8);
- }
-
- $x[$i >> 2] |= 0x80 << (24 - ($i % 4) * 8);
-
- $x[$n * 16 - 1] = strlen($str) * 8;
-
- $a = 1732584193;
- $b = -271733879;
- $c = -1732584194;
- $d = 271733878;
- $e = -1009589776;
-
- for ($i = 0; $i < sizeof($x); $i += 16)
- {
- $olda = $a;
- $oldb = $b;
- $oldc = $c;
- $oldd = $d;
- $olde = $e;
-
- for($j = 0; $j < 80; $j++)
- {
- if ($j < 16)
- {
- $w[$j] = $x[$i + $j];
- }
- else
- {
- $w[$j] = $this->_rol($w[$j - 3] ^ $w[$j - 8] ^ $w[$j - 14] ^ $w[$j - 16], 1);
- }
-
- $t = $this->_safe_add($this->_safe_add($this->_rol($a, 5), $this->_ft($j, $b, $c, $d)), $this->_safe_add($this->_safe_add($e, $w[$j]), $this->_kt($j)));
-
- $e = $d;
- $d = $c;
- $c = $this->_rol($b, 30);
- $b = $a;
- $a = $t;
- }
-
- $a = $this->_safe_add($a, $olda);
- $b = $this->_safe_add($b, $oldb);
- $c = $this->_safe_add($c, $oldc);
- $d = $this->_safe_add($d, $oldd);
- $e = $this->_safe_add($e, $olde);
- }
-
- return $this->_hex($a).$this->_hex($b).$this->_hex($c).$this->_hex($d).$this->_hex($e);
- }
+ function generate($str)
+ {
+ $n = ((strlen($str) + 8) >> 6) + 1;
+
+ for ($i = 0; $i < $n * 16; $i++)
+ {
+ $x[$i] = 0;
+ }
+
+ for ($i = 0; $i < strlen($str); $i++)
+ {
+ $x[$i >> 2] |= ord(substr($str, $i, 1)) << (24 - ($i % 4) * 8);
+ }
+
+ $x[$i >> 2] |= 0x80 << (24 - ($i % 4) * 8);
+
+ $x[$n * 16 - 1] = strlen($str) * 8;
+
+ $a = 1732584193;
+ $b = -271733879;
+ $c = -1732584194;
+ $d = 271733878;
+ $e = -1009589776;
+
+ for ($i = 0; $i < sizeof($x); $i += 16)
+ {
+ $olda = $a;
+ $oldb = $b;
+ $oldc = $c;
+ $oldd = $d;
+ $olde = $e;
+
+ for($j = 0; $j < 80; $j++)
+ {
+ if ($j < 16)
+ {
+ $w[$j] = $x[$i + $j];
+ }
+ else
+ {
+ $w[$j] = $this->_rol($w[$j - 3] ^ $w[$j - 8] ^ $w[$j - 14] ^ $w[$j - 16], 1);
+ }
+
+ $t = $this->_safe_add($this->_safe_add($this->_rol($a, 5), $this->_ft($j, $b, $c, $d)), $this->_safe_add($this->_safe_add($e, $w[$j]), $this->_kt($j)));
+
+ $e = $d;
+ $d = $c;
+ $c = $this->_rol($b, 30);
+ $b = $a;
+ $a = $t;
+ }
+
+ $a = $this->_safe_add($a, $olda);
+ $b = $this->_safe_add($b, $oldb);
+ $c = $this->_safe_add($c, $oldc);
+ $d = $this->_safe_add($d, $oldd);
+ $e = $this->_safe_add($e, $olde);
+ }
+
+ return $this->_hex($a).$this->_hex($b).$this->_hex($c).$this->_hex($d).$this->_hex($e);
+ }
// --------------------------------------------------------------------
@@ -127,17 +127,17 @@ class CI_SHA {
* @param string
* @return string
*/
- function _hex($str)
- {
- $str = dechex($str);
-
- if (strlen($str) == 7)
- {
- $str = '0'.$str;
- }
-
- return $str;
- }
+ function _hex($str)
+ {
+ $str = dechex($str);
+
+ if (strlen($str) == 7)
+ {
+ $str = '0'.$str;
+ }
+
+ return $str;
+ }
// --------------------------------------------------------------------
@@ -147,18 +147,18 @@ class CI_SHA {
* @access private
* @return string
*/
- function _ft($t, $b, $c, $d)
- {
- if ($t < 20)
- return ($b & $c) | ((~$b) & $d);
- if ($t < 40)
- return $b ^ $c ^ $d;
- if ($t < 60)
- return ($b & $c) | ($b & $d) | ($c & $d);
-
- return $b ^ $c ^ $d;
- }
-
+ function _ft($t, $b, $c, $d)
+ {
+ if ($t < 20)
+ return ($b & $c) | ((~$b) & $d);
+ if ($t < 40)
+ return $b ^ $c ^ $d;
+ if ($t < 60)
+ return ($b & $c) | ($b & $d) | ($c & $d);
+
+ return $b ^ $c ^ $d;
+ }
+
// --------------------------------------------------------------------
/**
@@ -167,25 +167,25 @@ class CI_SHA {
* @access private
* @return string
*/
- function _kt($t)
- {
- if ($t < 20)
- {
- return 1518500249;
- }
- else if ($t < 40)
- {
- return 1859775393;
- }
- else if ($t < 60)
- {
- return -1894007588;
- }
- else
- {
- return -899497514;
- }
- }
+ function _kt($t)
+ {
+ if ($t < 20)
+ {
+ return 1518500249;
+ }
+ else if ($t < 40)
+ {
+ return 1859775393;
+ }
+ else if ($t < 60)
+ {
+ return -1894007588;
+ }
+ else
+ {
+ return -899497514;
+ }
+ }
// --------------------------------------------------------------------
@@ -195,13 +195,13 @@ class CI_SHA {
* @access private
* @return string
*/
- function _safe_add($x, $y)
- {
- $lsw = ($x & 0xFFFF) + ($y & 0xFFFF);
- $msw = ($x >> 16) + ($y >> 16) + ($lsw >> 16);
-
- return ($msw << 16) | ($lsw & 0xFFFF);
- }
+ function _safe_add($x, $y)
+ {
+ $lsw = ($x & 0xFFFF) + ($y & 0xFFFF);
+ $msw = ($x >> 16) + ($y >> 16) + ($lsw >> 16);
+
+ return ($msw << 16) | ($lsw & 0xFFFF);
+ }
// --------------------------------------------------------------------
@@ -211,11 +211,11 @@ class CI_SHA {
* @access private
* @return integer
*/
- function _rol($num, $cnt)
- {
- return ($num << $cnt) | $this->_zero_fill($num, 32 - $cnt);
- }
-
+ function _rol($num, $cnt)
+ {
+ return ($num << $cnt) | $this->_zero_fill($num, 32 - $cnt);
+ }
+
// --------------------------------------------------------------------
/**
@@ -224,26 +224,26 @@ class CI_SHA {
* @access private
* @return string
*/
- function _zero_fill($a, $b)
- {
- $bin = decbin($a);
-
- if (strlen($bin) < $b)
- {
- $bin = 0;
- }
- else
- {
- $bin = substr($bin, 0, strlen($bin) - $b);
- }
-
- for ($i=0; $i < $b; $i++)
- {
- $bin = "0".$bin;
- }
-
- return bindec($bin);
- }
+ function _zero_fill($a, $b)
+ {
+ $bin = decbin($a);
+
+ if (strlen($bin) < $b)
+ {
+ $bin = 0;
+ }
+ else
+ {
+ $bin = substr($bin, 0, strlen($bin) - $b);
+ }
+
+ for ($i=0; $i < $b; $i++)
+ {
+ $bin = "0".$bin;
+ }
+
+ return bindec($bin);
+ }
}
// END CI_SHA
?> \ No newline at end of file
generated by cgit v1.2.3-24-g4f1b (git 2.32.0) at 2024-11-23 14:36:39 +0100