Importance

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Abstract

It is aimed to provide an encryption key distribution system which can be easily operated, highly freely share the data therein, and achieve high reliability for authentication of one or more unlocking right owners who are assigned to each encrypted folder. An encryption key distribution system 500 stores a lock used to lock a folder on a PC 100, and stores an unlocking key corresponding to the lock on a key distribution server 200. To view a locked folder (hereinafter referred to as the encrypted folder), a mobile telephone 300 accesses the key distribution server 200, and is authenticated by using authentication data unique to the mobile telephone 300. Under the condition that the authentication is successful, the key distribution server 200 distributes the unlocking key to the PC 100. The PC 100 unlocks the encrypted folder by using the unlocking key distributed from the key distribution server 200, thereby displaying the contents of the folder.

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First Claim