WIRELESS COMMUNICATION SYSTEM, COMMUNICATION TERMINAL, SECURITY MANAGEMENT SERVER, DEVICE MANAGEMENT SERVER, AND WIRELESS COMMUNICATION METHOD THEREIN

摘要

The present invention transmits and receives data safely between an electronic device and a communication terminal. The electronic device, having a wireless communication function, transmits data encrypted using a prescribed cryptographic key to the communication terminal, and decrypts the data transmitted from the communication terminal by using the prescribed cryptographic key. The communication terminal, capable of wireless communication with the electronic device, exchanges encrypted data between the electronic device and itself, and requests a security management server to encrypt or decrypt the data. The security management server encrypts or decrypts the data transmitted from the communication terminal by using the prescribed cryptographic key, and transmits the encrypted or decrypted data to the communication terminal.