This Padlock icon has Android KitKat style. If you use the icons for Android apps, we recommend using our latest Material Icons icon pack (please check our sidebar on the right). Otherwise, it's a solid icon pack that looks good in small resolutions, either on the web or in print. It's characterized by thick lines, smooth corners, and is optimized for 24x24 pixels.
This icon looks just like a padlock. The base of the lock is a square with slightly rounded edges. There is a circular shape in the center that looks just like where you would place a key. The hasp of the lock is on top and is simply a half circle tilted slightly to the left to indicate the lock is open.