| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent tampering processing.SOLUTION: A display control unit displays a setting screen for setting setting information of an operation object to be operated by driver software in a display unit. An encryption key generation unit 45 generates an encryption key for encrypting specific setting information in setting information set through the setting screen, and an encryption unit 47 encrypts the specific setting information with the generated encryption key. A setting storage unit 42 stores the encrypted specific setting information, and setting information in which the operation object is not encrypted in a first storage unit for driver software. A decryption key generation unit 52 generates a decryption key for decrypting the encrypted specific setting information, and a decryption unit 54 decrypts the encrypted specific setting information stored in the first storage unit with the generated decryption key. An execution unit 56 uses unencrypted setting information stored in the first storage unit and the decrypted setting information to operate the operation object.</p> |
