| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for controlling an encryption key intended for use by an application included in a personal device.SOLUTION: In order to memorize a device-inherent encryption key in a personal device 100, a data package including one or more encryption keys is transmitted to the personal device from a safety process point 150 in an assembly line of the device. To react with the transmitted data package, the safety process point receives a backup data package from the personal device. The backup data package is an encrypted data package using a unique secret chip key memorized in a secret memory device having a falsification preventive function for a chip included in the personal device. The safety process point is prepared to memorize the backup data package read from the personal device in a permanent public database together with a unique chip identifier related to the backup data package. |
