| 摘要 |
<p>It is possible to perform encryption by setting various decryption conditions. Encrypted data obtained by encryption data to be processed includes header data (501), basic condition data (502), encrypted condition data (503), and encrypted cut data (504). The basic condition data (502) contains data on the condition for allowing or inhibiting decryption of the encrypted condition data (503). In the decryption device, only the encrypted condition data which is allowed to be decrypted by the basic condition data (502) is decrypted into condition data. The condition data contains data on the condition for allowing or inhibiting decryption of the encrypted cut data. In the decryption device, only the encrypted cut data (504) allowed to be decrypted by the condition data (503) is decrypted.</p> |
