An enhanced secure mechanism of access control

Our goal is to propose a mobile phone based access control system and design a solution that can replace physical keys for accessing private buildings. We propose a solution using digital keys on Bluetooth-enabled mobile phones providing manual and automatic unlocking. The design allows easy distribution of keys to users, with access control imposed by easily installable autonomous lock devices. This system supports fine-filtered access rights, remote distribution, and decentralized administration of access rights and revocation. Additionally, the system manages access to remotely located locks with low power supply and temporary communication abilities. We present a solution for fully automatic discovery and connection establishment using Bluetooth. Moreover we present a simple and secure authentication and access control protocol, allowing each mobile phone to unlock multiple different locks using a single identity certificate and public unencrypted digital keys. We build a prototype application, measure the exact energy consumption and time usage of the application. In addition to all obvious advantages of this system, it is at least as secure as all existing physical access control solution.