Use management method for peripheral device, electronic system and component device thereof

An electronic system consisting of a host apparatus and a predetermined peripheral device connected via a communications channel, wherein

• said predetermined peripheral device is a disc drive unit;
• said host apparatus has first control means and first security means that operate independently;
• said peripheral device connected via the communications channel to the host apparatus has second control means and second security means that operate independently;
• said first control means executes an operating system and a program running on said operating system;
• said first security means sends the policy information defining use contents permissible for said peripheral device and key information identifying said program for authorization to said peripheral device, and causes said program to read the intrinsic information having substantially same content as the key information sent to said peripheral device;
• said second control means controls the operation permissible for said peripheral device;
• and
• said second security means makes a determination whether or not said program is valid by collating said intrinsic information with said received key information, when said program gains access to the peripheral device with said intrinsic information, and causes said program to pass a use mode according to said received policy information to said second control means, if said program is determined to be valid.

A host apparatus capable of connecting a predetermined peripheral device, comprising first control means and first security means that operate independently;

• wherein said predetermined peripheral device is a disc drive unit;
• wherein said first control means executes an operating system and a program running on said operating system;
• and
• said first security means sends the policy information defining use contents permissible for said peripheral device connected to the host apparatus and key information identifying said program for authorization to said peripheral device, and causes said program to read the intrinsic information having substantially same contents as the key information sent to said peripheral device;
• whereby a determination is made whether or not said program is valid by collating said intrinsic information with said received key information, when said program gains access to the peripheral device with said intrinsic information, and permits said program to operate in the use mode according to said received policy information, if said program is determined to be valid.

An electronic system comprising:

• a host apparatus and a peripheral device connected to said host apparatus, said peripheral device comprising second control means and second security means that operate independently, and said predetermined peripheral device being a disc drive unit;
• wherein said host apparatus executes an operating system and an application program running on said operating system, sends the policy information defining use contents permissible for said peripheral device and key information identifying said application program for authorization to said peripheral device, and causes said program to read the intrinsic information having substantially same content as the key information sent to said peripheral device;
• said second control means controls the operation permissible for said peripheral device;
• and
• said second security means makes a determination whether or not said program is valid by collating said intrinsic information with said received key information, when said program gains access to the peripheral device with said intrinsic information, and causes said program to pass the use mode according to said received policy information to said second control means, if said program is determined to be valid.