加密cookies

author/config/config.php

@@ -245,9 +245,9 @@ $config['encryption_key'] = 'pliy3rgYcV9lXeKWaO6P_author';
 |
 */
 $config['sess_cookie_name']		= 'ci_session_author';
-$config['sess_expiration']		= 0;
+$config['sess_expiration']		= 7200;
 $config['sess_expire_on_close']	= FALSE;
-$config['sess_encrypt_cookie']	= FALSE;
+$config['sess_encrypt_cookie']	= true;
 $config['sess_use_database']	= FALSE;
 $config['sess_table_name']		= 'ci_sessions_author';
 $config['sess_match_ip']		= FALSE;