| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an electronic ticket system capable of preventing illegal resale in a simple system, and achieving high security (safety).SOLUTION: A management server stores the ID information registered from a portable communication terminal in association with an encryption key and a decryption key, and transmits the decryption key to the portable communication terminal. The portable communication terminal receives the decryption key and stores it in a secure element. The management server also receives the ID information together with electronic ticket information from the portable communication terminal, acquires the electronic ticket and the encryption key on the basis of these information, and transmits an encrypted electronic ticket obtained as a result of encrypting the electronic ticket using the encryption key to the portable communication terminal. The portable communication terminal receives the encrypted electronic ticket, and decrypts the encrypted electronic ticket using the decryption key stored in the secure element. When the encrypted electronic ticket is successfully decrypted, the portable communication terminal displays the decrypted electronic ticket.</p> |
