the present invention relates to a locking technology adapted to a place which requires an electronic locking apparatus such as a safe , an entrance door , a drawer , a cabinet , etc ., and in particular to an improved electronic locking apparatus capable of preventing an intruder from illegally unlocking a locking apparatus and implementing a complicated and variable communication signal system between an input apparatus and an opening and closing apparatus in an electronic locking apparatus which is formed of an input apparatus and an opening and closing apparatus for implementing an electronic locking apparatus as a reliable locking apparatus .