diff --git a/includes/base.inc b/includes/base.inc
index 8b3a99c..017a815 100644
--- a/includes/base.inc
+++ b/includes/base.inc
@@ -160,6 +160,13 @@ abstract class MigrationBase {
   public static function setDisplayFunction($display_function) {
     self::$displayFunction = $display_function;
   }
+  
+  /**
+   * Track whether or not we've already displayed an encryption warning
+   *
+   * @var bool
+   */
+  protected static $showEncryptionWarning = TRUE;
 
   /**
    * The fraction of the memory limit at which an operation will be interrupted.
@@ -1036,6 +1043,72 @@ abstract class MigrationBase {
       return FALSE;
     }
   }
+  
+
+  /**
+   * Encrypt an incoming value. Detects for existence of the Drupal 'Encrypt'
+   *  module or the mcrypt PHP extension.
+   *
+   * @param string $value
+   * @return string The encrypted value.
+   */
+  protected function encrypt($value) {
+    if (module_exists('encrypt')) {
+      $value = encrypt($value);
+    }
+    else if (extension_loaded('mcrypt')) {
+      // Mimic encrypt module to ensure compatibility
+      $key = drupal_substr(variable_get('drupal_private_key', 'no_key'), 0, 32);
+      $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);
+  
+      $encryption_array['text'] = $value;
+      $encryption_array['method'] = 'mcrypt_rij_256'; // For forward compatibility with encrypt module
+      $encryption_array['key_name'] = 'drupal_private_key'; // For forward compatibility with encrypt module
+      $value = serialize($encryption_array);
+    }
+    else {
+      if (self::$showEncryptionWarning) {
+        MigrationBase::displayMessage(t('Your database credentials are not encrypted. Ensure the Encrypt Drupal module or mcrypt PHP extension is installed for this functionality.'), 'warning');
+        self::$showEncryptionWarning = FALSE;
+      }
+    }
+    return $value;
+  }
+  
+  
+  /**
+   * Decrypt an incoming value.
+   *
+   * @param string $value
+   * @return string The encrypted value
+   */
+  protected function decrypt($value) {
+    if (module_exists('encrypt')) {
+      $value = decrypt($value);
+    }
+    else if (extension_loaded('mcrypt')) {
+      // Mimic encrypt module to ensure compatibility
+      $encryption_array = unserialize($value);
+      $method = $encryption_array['method']; // Not used right now
+      $text = $encryption_array['text'];
+      $key_name = $encryption_array['key_name']; // Not used right now
+  
+      $iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB);
+      $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);
+      $key = drupal_substr(variable_get('drupal_private_key', 'no_key'), 0, 32);
+      $value = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $key, $text, MCRYPT_MODE_ECB, $iv);
+    }
+    else {
+      if (self::$showEncryptionWarning) {
+        MigrationBase::displayMessage(t('Your database credentials are not encrypted. Ensure the Encrypt Drupal module or mcrypt PHP extension is installed for this functionality.'), 'warning');
+        self::$showEncryptionWarning = FALSE;
+      }
+    }
+    return $value;
+  }
+  
 
   /**
    * Convert an incoming string (which may be a UNIX timestamp, or an arbitrarily-formatted