Changeset 12620 for extensions/Subscribe_to_comments/include/functions.inc.php

Timestamp:

Nov 13, 2011, 8:33:09 PM (12 years ago)

Author:

mistic100

Message:

fix key generation function when mcrypt is disabled, fix display on some themes

File:

• extensions/Subscribe_to_comments/include/functions.inc.php (modified) (3 diffs)

extensions/Subscribe_to_comments/include/functions.inc.php

@@ -371 +371 @@
 
 /**
- * crypt a string using mcrypt extension or a binary method
+ * crypt a string using mcrypt extension or
+ * http://stackoverflow.com/questions/800922/how-to-encrypt-string-without-mcrypt-library-in-php/802957#802957
  * @param string value to crypt
  * @param string key
@@ -382 +383 @@
     $iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB);
     $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);
-    $value = mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $key, $value, MCRYPT_MODE_ECB, $iv);
+    $result = mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $key, $value, MCRYPT_MODE_ECB, $iv);
   }
   else
   {
-    $value = $value ^ $key; // binary XOR operation
-  }
-  
-  $value = base64url_encode($value);
-  return trim($value); 
+    $result = null;
+    for($i = 0; $i < strlen($value); $i++)
+    {
+      $char = substr($value, $i, 1);
+      $keychar = substr($key, ($i % strlen($key))-1, 1);
+      $char = chr(ord($char) + ord($keychar));
+      $result .= $char;
+    }
+  }
+  
+  $result = base64url_encode($result);
+  return trim($result); 
 }
 
@@ -407 +415 @@
     $iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB);
     $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);
-    $value = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $key, $value, MCRYPT_MODE_ECB, $iv);
+    $result = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $key, $value, MCRYPT_MODE_ECB, $iv);
   }
   else
   {
-    $value = $value ^ $key; // binary XOR operation
-  }
-  
-  return trim($value);
-}
-
+    $result = null;
+    for($i = 0; $i < strlen($value); $i++)
+    {
+      $char = substr($value, $i, 1);
+      $keychar = substr($key, ($i % strlen($key))-1, 1);
+      $char = chr(ord($char) - ord($keychar));
+      $result .= $char;
+    }
+  }
+  
+  return trim($result);
+}
 
 /**