Information Processing Device and Information Processing System

An information processing system that connects to an external recording device and an information processing device via a communications network, the information processing device comprising:

• a tamper-proof IC chip that includes a storage area and that can read and process data from the storage area,
• wherein the external recording device includes a storage area and an access control portion that performs two-way authentication with the IC chip via a communications network and that controls access to a storage area of the external recording device,
• first key data is stored in the IC chip storage area for, at least one of, the purpose of performing two-way authentication between the IC chip and the access control portion of the external recording device and the purpose of encrypting and decrypting data stored in the storage area of the external recording device,
• second key data is stored in the storage area of the external recording device for, at least one of, the purpose of performing two-way authentication between the IC chip and the access control portion of the external recording device and the purpose of encrypting and decrypting data stored in the storage area of the external recording device,
• a cache area is allocated to the storage area of the IC chip to temporarily store data, and
• the IC chip, in accordance with a request from an external device, after performing the two-way authentication with the access control portion via the communications network based on the first key data, securely reads specified data that is used to satisfy the request from the external device from the storage area of the external recording device into the cache area of the IC chip, and processes one of a part of the data and all of the data read into the cache area.

An information processing device that connects to an external recording device via a communications network, the information processing device comprising:

• a tamper-proof IC chip that includes a storage area and that can process data read from the storage area,
• wherein the external recording device includes an access control portion that performs two-way authentication between a storage area and the IC chip via a communications network, and controls access to the storage area of the external recording device,
• first key data is stored in the IC chip storage area for, at least one of, the purpose of performing two-way authentication between the IC chip and the access control portion of the external recording device and the purpose of encrypting and decrypting data stored in the storage area of the external recording device,
• second key data is stored in the storage area of the external recording device for, at least one of, the purpose of performing two-way authentication between the IC chip and the access control portion of the external recording device and the purpose of encrypting and decrypting data stored in the storage area of the external recording device,
• a cache area is allocated to the storage area of the IC chip to temporarily store data, and
• the IC chip, in accordance with a request from an external device, after performing the two-way authentication with the access control portion via the communications network based on the first key data, securely reads specified data that is used to satisfy the request from the external device from the storage area of the external recording device into the cache area of the IC chip, and processes one of a part of the data and all of the data read into the cache area.