Information processing with data storage

A data storage device for an information processing device, the data storage device comprising:

• an encryption circuit for encrypting desired data by use of a first encryption key and for encrypting the first encryption key and personal identification information by use of a second encryption key created out of a given piece of the personal identification information;
• a recording medium for recording the data encrypted by use of the first encryption key, the first encryption key encrypted by use of the second encryption key, and the personal identification information encrypted by use of the second key;
• and
• a control unit for executing user verification by use of the encrypted personal identification information stored in the recording medium.

A hard disk device comprising:

• a magnetic disk being a recording medium;
• a read-and-write mechanism for writing and reading data in and out of the magnetic disk;
• and
• a control mechanism having an encryption function for encrypting data to be written in the magnetic disk and for decrypting the encrypted data to be read out of the magnetic disk, the control mechanism for controlling reading and writing the data by the reading-and-writing mechanism,
• wherein the control mechanism executes encryption of the data to be written in the magnetic disk for each unit of writing and reading data in and out of a storage area of the magnetic disk upon processing of writing the data in the magnetic disk, in response to turning on and off of the encryption mechanism.

An information processing device comprising:

• an operation control unit for executing various operation processing;
• and
• a data storage device for storing data to be processed by the operation control unit,
• wherein the data storage device includes an encryption function for encrypting desired data by use of a data encryption key and for encrypting personal identification information by use of an verification encryption key created out of a given piece of the personal identification information, and
• the data storage device executes user verification by use of the encrypted personal identification information.

A data processing method for a data storage device for executing data writing and reading in and out of a recording medium of a data storage device, the data processing method for a data storage device comprising the steps of:

• creating an encryption key out of a given piece of personal identification information;
• encrypting the personal identification information by use of the encryption key and thereby recording the encrypted personal identification information in the recording medium as verification data;
• executing user verification based on the verification data recorded in the recording medium;
• and
• executing any of encrypting write data transmitted from a host system by use of the encryption key and thereby recording the encrypted write data in the recording medium, and, decrypting the data read out of the recording medium by use of the encryption key and thereby transmitting the decrypted data to the host system.

A data processing method for a data storage device for executing data writing and reading in and out of a recording medium of a data storage device, the data processing method for a data storage device comprising the steps of:

• creating a verification encryption key out of a given piece of personal identification information;
• encrypting the personal identification information by use of the verification encryption key and recording the encrypted personal identification information in the recording medium as verification data, and further encrypting a data encryption key by use of the verification encryption key and thereby recording the encrypted data encryption key in the recording medium;
• executing user verification based on the verification data recorded in the recording medium;
• decrypting the data encryption key recorded in the recording medium by use of the verification encryption key;
• and
• executing any of encrypting write data transmitted from a host system by use of the decrypted data encryption key and thereby recording the encrypted write data in the recording medium, and decrypting the data read out of the recording medium by use of the data encryption key and thereby transmitting the decrypted data to the host system.

A program for controlling a computer to control data writing and reading in and out of a magnetic disk, the program causing the computer to execute the processes of:

• creating an encryption key out of a given piece of personal identification information;
• encrypting the personal identification information by use of the encryption key and thereby recording the encrypted personal identification information in the magnetic disk as verification data;
• executing user verification based on the verification data recorded in the magnetic disk;
• and
• executing any of encrypting write data transmitted from a host system by use of the encryption key and thereby recording the encrypted write data in the magnetic disk, and decrypting the data read out of the magnetic disk by use of the encryption key and thereby transmitting the decrypted data to the host system.

A program for controlling a computer to control data writing and reading in and out of a magnetic disk, the program causing the computer to execute the processes of:

• creating an verification encryption key out of a given piece of personal identification information;
• encrypting the personal identification information by use of the verification encryption key and recording the encrypted personal identification information in the magnetic disk as verification data, and further encrypting a data encryption key by use of the verification encryption key and thereby recording the encrypted data encryption key in the magnetic disk;
• executing user verification based on the verification data recorded in the magnetic disk;
• decrypting the data encryption key recorded in the magnetic disk by use of the verification encryption key;
• and
• executing any of encrypting write data transmitted from a host system by use of the decrypted data encryption key and thereby recording the encrypted write data in the magnetic disk, and decrypting the data read out of the magnetic disk by use of the data encryption key and thereby transmitting the decrypted data to the host system.