The present disclosure relates an electronic locking system. In certain embodiments, the electronic locking system includes a passive electronic lock, active electronic key and passive electronic key. The passive electronic key stores a passive digital key, and the active electronic key stores an active digital key. Each of passive and active electronic keys includes a communication channel and an electronic key power supply port. The active electronic key includes electrical power source providing electrical power supply to active electronic key, passive electronic lock and passive electronic key through passive electronic lock to operate passive electronic lock. When both active and passive electronic keys are inserted into respective electronic keyholes of passive electronic lock, both active and passive digital keys are transmitted to passive electronic lock, passive electronic lock can be locked and unlocked only when both active and passive digital keys received match prestored active and passive digital keys respectively.