Apparatus and method for generating a non-interactive key and method for communication security using the same

PURPOSE: An apparatus and method for generating a non-interactive key and method for communication security using the same are provided to create a key with a small amount of calculation using a simple interface. CONSTITUTION: An event sensor(10) senses a physical event from outside. A key generation part(40) creates a key based on the physical events which are sensed by the event sensor. A timer(20) measures the event generation time interval. The key generation part creates key based on the measured value of the generated events through the timer. The event sensor senses one or more of an impact, a contact, a vibration, a sound, or light.