General Purpose Time-differential Electronic/Mechanical Password Locking/Security System Equipped with Internal Hacking Protection Program using Time-interval Checking Device between Password Input Key Strokes

摘要

An electronic/mechanical password locking/security system equipped with internal hacking protection program using time-interval is disclosed. The electronic/mechanical password locking/security system comprises a custom semiconductor device (10) including a sequential comparator (14) for comparing an input password to a pre-stored password sequentially, a memory device (12) for storing an existing password and altering it, a timer (15) for outputting the existing password according to a predetermined time information, a clock/oscillator (16) for generating a basic time information of the system, an input buffer (13) for storing the input password and outputting the input password to the sequential comparator (14) according to a predetermined time information and a controller (11) for controlling and supervising the custom semiconductor device (10). According to the present invention, the system can maintain security using a time information between each character as well as a character information of input password even if a password is revealed, and maximize the security by adding a simple circuit to the conventional kinds of devices requiring security such as a mechanical locking device, a financial institution application, home, a military application and a satellite communication system.