diff -r de56132c008d -r bdac73ed481e includes/diffiehellman.php
--- a/includes/diffiehellman.php	Sun Mar 28 21:49:26 2010 -0400
+++ b/includes/diffiehellman.php	Sun Mar 28 23:10:46 2010 -0400
@@ -20,11 +20,11 @@
 $dh_supported = true;
 try
 {
-  $GLOBALS['_math'] = enanomath_create();
+	$GLOBALS['_math'] = enanomath_create();
 }
 catch ( Exception $e )
 {
-  $dh_supported = false;
+	$dh_supported = false;
 }
 // Our prime number as a base for operations.
 $GLOBALS['dh_prime'] = '7916586051748534588306961133067968196965257961415756656521818848750723547477673457670019632882524164647651492025728980571833579341743988603191694784406703';
@@ -40,8 +40,8 @@
 
 function dh_gen_private()
 {
-  global $_math;
-  return $_math->random(256);
+	global $_math;
+	return $_math->random(256);
 }
 
 /**
@@ -52,8 +52,8 @@
 
 function dh_gen_public($b)
 {
-  global $_math, $dh_g, $dh_prime;
-  return $_math->powmod($dh_g, $b, $dh_prime);
+	global $_math, $dh_g, $dh_prime;
+	return $_math->powmod($dh_g, $b, $dh_prime);
 }
 
 /**
@@ -65,8 +65,8 @@
 
 function dh_gen_shared_secret($a, $B)
 {
-  global $_math, $dh_g, $dh_prime;
-  return $_math->powmod($B, $a, $dh_prime);
+	global $_math, $dh_g, $dh_prime;
+	return $_math->powmod($B, $a, $dh_prime);
 }
 
 /*
@@ -80,13 +80,13 @@
 are permitted provided that the following conditions are met:
 
  * Redistributions of source code must retain the above copyright notice, this
-   list of conditions and the following disclaimer.
+ 	list of conditions and the following disclaimer.
  * Redistributions in binary form must reproduce the above copyright notice,
-   this list of conditions and the following disclaimer in the documentation
-   and/or other materials provided with the distribution.
+ 	this list of conditions and the following disclaimer in the documentation
+ 	and/or other materials provided with the distribution.
  * Neither the name of the <ORGANIZATION> nor the names of its contributors may
-   be used to endorse or promote products derived from this software without
-   specific prior written permission.
+ 	be used to endorse or promote products derived from this software without
+ 	specific prior written permission.
 
 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
@@ -101,165 +101,165 @@
 */
 class SHA256
 {
-  var $chrsz = 8;  /* bits per input character. 8 - ASCII; 16 - Unicode  */
-  
-  function safe_add ($x, $y) {
-    $lsw = ($x & 0xFFFF) + ($y & 0xFFFF);
-    $msw = ($x >> 16) + ($y >> 16) + ($lsw >> 16);
-    // 2009-07-02 Added & 0xFFFFFFFF here to fix problem on PHP w/ native 64-bit integer support (rev. 1030)
-    return (($msw << 16) | ($lsw & 0xFFFF)) & 0xFFFFFFFF;
-  }
-  function rshz($X, $n)
-  {
-    // equivalent to $X >>> $n in javascript
-    // pulled from http://www.tapouillo.com/firefox_extension/sourcecode.txt, public domain
-    $z = hexdec(80000000); 
-    if ($z & $X) 
-    { 
-        $X = ($X>>1); 
-        $X &= (~$z); 
-        $X |= 0x40000000; 
-        $X = ($X>>($n-1)); 
-    } 
-    else 
-    { 
-        $X = ($X>>$n); 
-    } 
-    return $X; 
-  }
-  function S ($X, $n) {return ( $this->rshz($X, $n) ) | ($X << (32 - $n));}
-  function R ($X, $n) {return ( $this->rshz($X, $n) );}
-  function Ch($x, $y, $z)  {return (($x & $y) ^ ((~$x) & $z));}
-  function Maj($x, $y, $z) {return (($x & $y) ^ ($x & $z) ^ ($y & $z));}
-  function Sigma0256($x) {return ($this->S($x, 2)  ^ $this->S($x, 13) ^ $this->S($x, 22));}
-  function Sigma1256($x) {return ($this->S($x, 6)  ^ $this->S($x, 11) ^ $this->S($x, 25));}
-  function Gamma0256($x) {return ($this->S($x, 7)  ^ $this->S($x, 18) ^ $this->R($x, 3));}
-  function Gamma1256($x) {return ($this->S($x, 17) ^ $this->S($x, 19) ^ $this->R($x, 10));}
-  function core_sha256 ($m, $l) {
-      $K = Array(0x428A2F98,0x71374491,0xB5C0FBCF,0xE9B5DBA5,0x3956C25B,0x59F111F1,0x923F82A4,0xAB1C5ED5,0xD807AA98,0x12835B01,0x243185BE,0x550C7DC3,0x72BE5D74,0x80DEB1FE,0x9BDC06A7,0xC19BF174,0xE49B69C1,0xEFBE4786,0xFC19DC6,0x240CA1CC,0x2DE92C6F,0x4A7484AA,0x5CB0A9DC,0x76F988DA,0x983E5152,0xA831C66D,0xB00327C8,0xBF597FC7,0xC6E00BF3,0xD5A79147,0x6CA6351,0x14292967,0x27B70A85,0x2E1B2138,0x4D2C6DFC,0x53380D13,0x650A7354,0x766A0ABB,0x81C2C92E,0x92722C85,0xA2BFE8A1,0xA81A664B,0xC24B8B70,0xC76C51A3,0xD192E819,0xD6990624,0xF40E3585,0x106AA070,0x19A4C116,0x1E376C08,0x2748774C,0x34B0BCB5,0x391C0CB3,0x4ED8AA4A,0x5B9CCA4F,0x682E6FF3,0x748F82EE,0x78A5636F,0x84C87814,0x8CC70208,0x90BEFFFA,0xA4506CEB,0xBEF9A3F7,0xC67178F2);
-      $HASH = Array(0x6A09E667, 0xBB67AE85, 0x3C6EF372, 0xA54FF53A, 0x510E527F, 0x9B05688C, 0x1F83D9AB, 0x5BE0CD19);
-      $W = Array(64);
-      /* append padding */
-      if ( !isset($m[$l >> 5]) )
-        $m[$l >> 5] = 0;
-      $m[$l >> 5] |= 0x80 << (24 - $l % 32);
-      $m[(($l + 64 >> 9) << 4) + 15] = $l;
-      for ( $i = 0; $i<count($m); $i+=16 ) {
-          $a = $HASH[0];
-          $b = $HASH[1];
-          $c = $HASH[2];
-          $d = $HASH[3];
-          $e = $HASH[4];
-          $f = $HASH[5];
-          $g = $HASH[6];
-          $h = $HASH[7];
-          for ( $j = 0; $j<64; $j++)
-          {
-              if ( $j < 16 )
-              {
-                $W[$j] = ( isset($m[$j + $i]) ) ? $m[$j + $i] : 0;
-              }
-              else
-              {
-                $W[$j] = $this->safe_add(
-                  $this->safe_add(
-                    $this->safe_add(
-                      $this->Gamma1256($W[$j - 2]), $W[$j - 7]),
-                    $this->Gamma0256($W[$j - 15])),
-                  $W[$j - 16]);
-              }
-              $T1 = $this->safe_add(
-                $this->safe_add(
-                  $this->safe_add(
-                    $this->safe_add($h, $this->Sigma1256($e)
-                      ),
-                    $this->Ch($e, $f, $g)),
-                  $K[$j]),
-                $W[$j]);
-              $T2 = $this->safe_add($this->Sigma0256($a), $this->Maj($a, $b, $c));
-              $h = $g;
-              $g = $f;
-              $f = $e;
-              $e = $this->safe_add($d, $T1);
-              $d = $c;
-              $c = $b;
-              $b = $a;
-              $a = $this->safe_add($T1, $T2);
-          }
-          $HASH[0] = $this->safe_add($a, $HASH[0]);
-          $HASH[1] = $this->safe_add($b, $HASH[1]);
-          $HASH[2] = $this->safe_add($c, $HASH[2]);
-          $HASH[3] = $this->safe_add($d, $HASH[3]);
-          $HASH[4] = $this->safe_add($e, $HASH[4]);
-          $HASH[5] = $this->safe_add($f, $HASH[5]);
-          $HASH[6] = $this->safe_add($g, $HASH[6]);
-          $HASH[7] = $this->safe_add($h, $HASH[7]);
-      }
-      return $HASH;
-  }
-  function str2binb ($str) {
-    $bin = Array();
-    for ( $i = 0; $i < strlen($str); $i++ )
-    {
-      $byte = ord($str{$i});
-      $block = floor($i / 4);
-      $stage = $i % 4;
-      if ( $stage == 0 )
-      {
-        $bin[$block] = $byte;
-      }
-      else
-      {
-        $bin[$block] <<= 8;
-        $bin[$block] |= $byte;
-      }
-    }
-    while ( $stage < 3 )
-    {
-      $stage++;
-      $bin[$block] <<= 8;
-    }
-    return $bin;
-  }
-  function byte2hex($byte)
-  {
-    $b = dechex(ord($byte));
-    return ( strlen($b) < 2 ) ? "0$b" : $b;
-  }
-  function binb2hex ($binarray) {
-    $hexcase = 0; /* hex output format. 0 - lowercase; 1 - uppercase */
-    $hex_tab = $hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
-    $str = "";
-    foreach ( $binarray as $bytes )
-    {
-      $str .= implode('', array(
-          $this->byte2hex(chr(( $bytes >> 24 ) & 0xFF)),
-          $this->byte2hex(chr(( $bytes >> 16 ) & 0xFF)),
-          $this->byte2hex(chr(( $bytes >> 8 ) & 0xFF)),
-          $this->byte2hex(chr($bytes & 0xFF))
-        ));
-    }
-    return $str;
-  }
-  function hex_sha256 ( $s )
-  {
-    return $this->binb2hex(
-      $this->core_sha256(
-        $this->str2binb($s),
-        strlen($s) * $this->chrsz)
-      );
-  }
+	var $chrsz = 8;  /* bits per input character. 8 - ASCII; 16 - Unicode  */
+	
+	function safe_add ($x, $y) {
+		$lsw = ($x & 0xFFFF) + ($y & 0xFFFF);
+		$msw = ($x >> 16) + ($y >> 16) + ($lsw >> 16);
+		// 2009-07-02 Added & 0xFFFFFFFF here to fix problem on PHP w/ native 64-bit integer support (rev. 1030)
+		return (($msw << 16) | ($lsw & 0xFFFF)) & 0xFFFFFFFF;
+	}
+	function rshz($X, $n)
+	{
+		// equivalent to $X >>> $n in javascript
+		// pulled from http://www.tapouillo.com/firefox_extension/sourcecode.txt, public domain
+		$z = hexdec(80000000); 
+		if ($z & $X) 
+		{ 
+				$X = ($X>>1); 
+				$X &= (~$z); 
+				$X |= 0x40000000; 
+				$X = ($X>>($n-1)); 
+		} 
+		else 
+		{ 
+				$X = ($X>>$n); 
+		} 
+		return $X; 
+	}
+	function S ($X, $n) {return ( $this->rshz($X, $n) ) | ($X << (32 - $n));}
+	function R ($X, $n) {return ( $this->rshz($X, $n) );}
+	function Ch($x, $y, $z)  {return (($x & $y) ^ ((~$x) & $z));}
+	function Maj($x, $y, $z) {return (($x & $y) ^ ($x & $z) ^ ($y & $z));}
+	function Sigma0256($x) {return ($this->S($x, 2)  ^ $this->S($x, 13) ^ $this->S($x, 22));}
+	function Sigma1256($x) {return ($this->S($x, 6)  ^ $this->S($x, 11) ^ $this->S($x, 25));}
+	function Gamma0256($x) {return ($this->S($x, 7)  ^ $this->S($x, 18) ^ $this->R($x, 3));}
+	function Gamma1256($x) {return ($this->S($x, 17) ^ $this->S($x, 19) ^ $this->R($x, 10));}
+	function core_sha256 ($m, $l) {
+			$K = Array(0x428A2F98,0x71374491,0xB5C0FBCF,0xE9B5DBA5,0x3956C25B,0x59F111F1,0x923F82A4,0xAB1C5ED5,0xD807AA98,0x12835B01,0x243185BE,0x550C7DC3,0x72BE5D74,0x80DEB1FE,0x9BDC06A7,0xC19BF174,0xE49B69C1,0xEFBE4786,0xFC19DC6,0x240CA1CC,0x2DE92C6F,0x4A7484AA,0x5CB0A9DC,0x76F988DA,0x983E5152,0xA831C66D,0xB00327C8,0xBF597FC7,0xC6E00BF3,0xD5A79147,0x6CA6351,0x14292967,0x27B70A85,0x2E1B2138,0x4D2C6DFC,0x53380D13,0x650A7354,0x766A0ABB,0x81C2C92E,0x92722C85,0xA2BFE8A1,0xA81A664B,0xC24B8B70,0xC76C51A3,0xD192E819,0xD6990624,0xF40E3585,0x106AA070,0x19A4C116,0x1E376C08,0x2748774C,0x34B0BCB5,0x391C0CB3,0x4ED8AA4A,0x5B9CCA4F,0x682E6FF3,0x748F82EE,0x78A5636F,0x84C87814,0x8CC70208,0x90BEFFFA,0xA4506CEB,0xBEF9A3F7,0xC67178F2);
+			$HASH = Array(0x6A09E667, 0xBB67AE85, 0x3C6EF372, 0xA54FF53A, 0x510E527F, 0x9B05688C, 0x1F83D9AB, 0x5BE0CD19);
+			$W = Array(64);
+			/* append padding */
+			if ( !isset($m[$l >> 5]) )
+				$m[$l >> 5] = 0;
+			$m[$l >> 5] |= 0x80 << (24 - $l % 32);
+			$m[(($l + 64 >> 9) << 4) + 15] = $l;
+			for ( $i = 0; $i<count($m); $i+=16 ) {
+					$a = $HASH[0];
+					$b = $HASH[1];
+					$c = $HASH[2];
+					$d = $HASH[3];
+					$e = $HASH[4];
+					$f = $HASH[5];
+					$g = $HASH[6];
+					$h = $HASH[7];
+					for ( $j = 0; $j<64; $j++)
+					{
+							if ( $j < 16 )
+							{
+								$W[$j] = ( isset($m[$j + $i]) ) ? $m[$j + $i] : 0;
+							}
+							else
+							{
+								$W[$j] = $this->safe_add(
+									$this->safe_add(
+										$this->safe_add(
+											$this->Gamma1256($W[$j - 2]), $W[$j - 7]),
+										$this->Gamma0256($W[$j - 15])),
+									$W[$j - 16]);
+							}
+							$T1 = $this->safe_add(
+								$this->safe_add(
+									$this->safe_add(
+										$this->safe_add($h, $this->Sigma1256($e)
+											),
+										$this->Ch($e, $f, $g)),
+									$K[$j]),
+								$W[$j]);
+							$T2 = $this->safe_add($this->Sigma0256($a), $this->Maj($a, $b, $c));
+							$h = $g;
+							$g = $f;
+							$f = $e;
+							$e = $this->safe_add($d, $T1);
+							$d = $c;
+							$c = $b;
+							$b = $a;
+							$a = $this->safe_add($T1, $T2);
+					}
+					$HASH[0] = $this->safe_add($a, $HASH[0]);
+					$HASH[1] = $this->safe_add($b, $HASH[1]);
+					$HASH[2] = $this->safe_add($c, $HASH[2]);
+					$HASH[3] = $this->safe_add($d, $HASH[3]);
+					$HASH[4] = $this->safe_add($e, $HASH[4]);
+					$HASH[5] = $this->safe_add($f, $HASH[5]);
+					$HASH[6] = $this->safe_add($g, $HASH[6]);
+					$HASH[7] = $this->safe_add($h, $HASH[7]);
+			}
+			return $HASH;
+	}
+	function str2binb ($str) {
+		$bin = Array();
+		for ( $i = 0; $i < strlen($str); $i++ )
+		{
+			$byte = ord($str{$i});
+			$block = floor($i / 4);
+			$stage = $i % 4;
+			if ( $stage == 0 )
+			{
+				$bin[$block] = $byte;
+			}
+			else
+			{
+				$bin[$block] <<= 8;
+				$bin[$block] |= $byte;
+			}
+		}
+		while ( $stage < 3 )
+		{
+			$stage++;
+			$bin[$block] <<= 8;
+		}
+		return $bin;
+	}
+	function byte2hex($byte)
+	{
+		$b = dechex(ord($byte));
+		return ( strlen($b) < 2 ) ? "0$b" : $b;
+	}
+	function binb2hex ($binarray) {
+		$hexcase = 0; /* hex output format. 0 - lowercase; 1 - uppercase */
+		$hex_tab = $hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
+		$str = "";
+		foreach ( $binarray as $bytes )
+		{
+			$str .= implode('', array(
+					$this->byte2hex(chr(( $bytes >> 24 ) & 0xFF)),
+					$this->byte2hex(chr(( $bytes >> 16 ) & 0xFF)),
+					$this->byte2hex(chr(( $bytes >> 8 ) & 0xFF)),
+					$this->byte2hex(chr($bytes & 0xFF))
+				));
+		}
+		return $str;
+	}
+	function hex_sha256 ( $s )
+	{
+		return $this->binb2hex(
+			$this->core_sha256(
+				$this->str2binb($s),
+				strlen($s) * $this->chrsz)
+			);
+	}
 }
 
 if ( !function_exists('sha256') )
 {
-  function sha256($text)
-  {
-    static $sha_obj = false;
-    if ( !is_object($sha_obj) )
-      $sha_obj = new SHA256();
-    return $sha_obj->hex_sha256($text);
-  }
+	function sha256($text)
+	{
+		static $sha_obj = false;
+		if ( !is_object($sha_obj) )
+			$sha_obj = new SHA256();
+		return $sha_obj->hex_sha256($text);
+	}
 }
 
 ?>