DATA STORAGE DEVICE, INFORMATION PROCESSING APPARATUS MOUNTED THEREWITH, AND DATA PROCESSING METHOD AND PROGRAM THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a technology for the encryption processing of stored data and the management of an encryption key suitably applicable to the case that the user authentication and encryption of stored data are both applied to a storage device.

SOLUTION: The storage device is provided with an encryption circuit 54 for using an encryption key created from prescribed individual identification information such as a password to encrypt desired data and the individual identification information itself, a magnetic disk 10 for recording the data and the individual identification information encrypted by the encryption circuit 54, and a CPU 58 for using the encrypted individual identification information stored in the magnetic disk 10 to authenticate a user. Then the storage device authenticates the user on the basis of authentication data, uses the encryption key to encrypt write data transmitted from a host system and records the encrypted data to the magnetic disk 10, or uses the encryption key to decrypt the data read from the magnetic disk 10 and to transmit the decrypted data to the host system.

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