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REUSE SYSTEM, KEY GENERATION DEVICE, DATA SECURITY DEVICE, IN-VEHICLE COMPUTER, REUSE METHOD, AND COMPUTER PROGRAM
REUSE SYSTEM, KEY GENERATION DEVICE, DATA SECURITY DEVICE, IN-VEHICLE COMPUTER, REUSE METHOD, AND COMPUTER PROGRAM
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机译：重用系统，关键生成设备，数据安全设备，车载计算机，重用方法和计算机程序
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摘要
A reuse system includes: a key generation device; an in-vehicle computer that is detached from a first vehicle and is installed in a second vehicle; and a data security device that is installed in the second vehicle. The key generation device includes a vehicle interface, and a key generation unit that generates a first key that is the same as a key stored in the in-vehicle computer from a time when being installed in the first vehicle by using an in-vehicle computer identifier, and a master key that is common to the first and second vehicles, and transmits the first key to the second vehicle. The data security device includes a first interface unit, and a first cryptographic processing unit that encrypts first data, which is applied to the in-vehicle computer, with the first key to generate encrypted first data, and transmits the encrypted first data to the in-vehicle computer.
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