Deprecated do_hash() and read_file() in favor of hash() and file_get_contents() respectively
diff --git a/system/helpers/file_helper.php b/system/helpers/file_helper.php
index d53d986..b717aaa 100644
--- a/system/helpers/file_helper.php
+++ b/system/helpers/file_helper.php
@@ -44,38 +44,15 @@
 	 *
 	 * Opens the file specfied in the path and returns it as a string.
 	 *
+	 * This function is DEPRECATED and should be removed in
+	 * CodeIgniter 3.1+. Use file_get_contents() instead.
+	 *
 	 * @param	string	path to file
 	 * @return	string
 	 */
 	function read_file($file)
 	{
-		if ( ! file_exists($file))
-		{
-			return FALSE;
-		}
-
-		if (function_exists('file_get_contents'))
-		{
-			return file_get_contents($file);
-		}
-
-		if ( ! $fp = @fopen($file, FOPEN_READ))
-		{
-			return FALSE;
-		}
-
-		flock($fp, LOCK_SH);
-
-		$data = '';
-		if (filesize($file) > 0)
-		{
-			$data =& fread($fp, filesize($file));
-		}
-
-		flock($fp, LOCK_UN);
-		fclose($fp);
-
-		return $data;
+		return file_get_contents($file);
 	}
 }
 
diff --git a/system/helpers/security_helper.php b/system/helpers/security_helper.php
index 6187a4a..3e6e914 100644
--- a/system/helpers/security_helper.php
+++ b/system/helpers/security_helper.php
@@ -77,6 +77,9 @@
 	/**
 	 * Hash encode a string
 	 *
+	 * This function is DEPRECATED and should be removed in
+	 * CodeIgniter 3.1+. Use hash() instead.
+	 *
 	 * @param	string
 	 * @param	string
 	 * @return	string