KEY INFORMATION MANAGEMENT DEVICE KEY INFORMATION MANAGEMENT METHOD COMPUTER READABLE MEDIUM STORING KEY INFORMATION MANAGEMENT PROGRAM KEY INFORMATION SHARING METHOD AND COMPUTER READABLE MEDIUM STORING KEY INFORMATION SHARING PROGRAM

摘要

The present invention relates to a key information management device, key information management method, computer-readable recording medium storing a key information management program, key information sharing method, and computer-readable recording medium storing a key information sharing program. According to the present invention, the key information management device comprises a key information distribution unit (323) which distributes key information for releasing or operating an automobile (10) to a portable terminal (20) by allowing the portable terminal (20) to transmit a certain transmission signal towards the automobile (10). The key information distribution unit (323) distributes key information whose available period is overlapped, to each of the plurality of portable terminals (20). The key information sharing method, which is executed by a key information sharing device installed on the portable terminal (20), comprises: a step of acquiring the key information, which is distributed from the external device, for releasing or operating the automobile (10) by transmitting a certain transmission signal towards the automobile (10); and a step of sharing the key information to transmit the key information to another portable terminal (20) or distribute the key information from the external device in accordance with a certain operation by a user on the portable terminal (20). The present invention aims to improve user convenience when several people are riding in the same automobile and want to release the automobile.