Information processing device, information processing method, and program

An information processing device comprising:

• a data processing unit;
• and
• a storage unit,
• wherein the storage unit
• is divided into a protected area in which an access is permitted based on accessibility determination by verification of a certificate of a device that requests an access, and a general purpose area in which the accessibility determination by the verification of a certificate of a device that requests an access is not necessary,
• stores, in the general purpose area, encrypted content, and a media ID verification value generated based on a media ID that is an identifier of the own device, and
• stores, in the protected area, an encryption key to be applied to a process of using the encrypted content, and
• the data processing unit
• verifies a certificate provided from a reproduction device that is to use the encrypted content, and permits reading of the encryption key by the reproduction device in accordance with confirmation of access right with respect to the protected area, and
• outputs a media ID to the reproduction device, and enables determination of content reproduction availability based on a matching process between a calculated verification value based on a media ID in the reproduction device and a media ID verification value stored in the general purpose area.

An information processing device comprising:

• a data processing unit configured to read encrypted content stored in a medium including a storage unit and to execute an encryption process and a reproduction process,
• wherein the medium stores the encrypted content, an encryption key to be applied to a process of using encrypted content, and a media ID verification value that is a verification value based on a media ID that is an identifier of the medium, and
• the data processing unit
• calculates a verification value based on the media ID acquired from the medium, and executes a process of reproducing the encrypted content stored in the medium by data processing to which the encryption key is applied on condition that a matching process between the calculated verification value and the media ID verification value stored in the medium is established.

An information processing device comprising:

• a storage unit configured to store encrypted content and an encryption key to be applied to a process of using the encrypted content;
• and
• a data processing unit,
• wherein the data processing unit
• has a configuration for outputting the encrypted content and the encryption key to a medium to which content is output, and causing the medium to record the encrypted content and the encryption key,
• the medium
• includes a storage unit divided into a protected area in which an access is permitted based on accessibility determination by verification of a certificate of a device that requests an access, and a general purpose area in which the accessibility determination by the verification of a certificate of a device that requests an access is not necessary, and
• the data processing unit
• presents a certificate of the own device to the memory card, and writes the encryption key in the protected area in which an access is permitted based on verification of the certificate by the memory card.

An information processing method executed in an information processing device including a data processing unit and a storage unit,

• the storage unit
• being divided into a protected area in which an access is permitted based on accessibility determination by verification of a certificate of a device that requests an access, and a general purpose area in which the accessibility determination by the verification of a certificate of a device that requests an access is not necessary,
• storing, in the general purpose area, encrypted content, and a media ID verification value generated based on a media ID that is an identifier of the own device, and
• storing, in the protected area, an encryption key to be applied to a process of using the encrypted content,
• the data processing unit
• verifying a certificate provided from a reproduction device that is to use the encrypted content, and permitting reading of the encryption key by the reproduction device in accordance with confirmation of access right with respect to the protected area, and
• outputting a media ID to the reproduction device, and enabling determination of content reproduction availability based on a matching process between a calculated verification value based on a media ID in the reproduction device and a media ID verification value stored in the general purpose area.

An information processing method executed in an information processing device, comprising:

• a data processing step, executed by a data processing unit of the information processing device, of reading encrypted content stored in a medium including a storage unit and executing an encryption process and a reproduction process;
• and
• storing, by the medium, the encrypted content, an encryption key to be applied to a process of using encrypted content, and a media ID verification value that is a verification value based on a media ID that is an identifier of the medium,
• wherein the data processing step
• is a step of calculating a verification value based on the media ID acquired from the medium, and executing a process of reproducing the encrypted content stored in the medium by data processing to which the encryption key is applied on condition that a matching process between the calculated verification value and the media ID verification value stored in the medium is established.

A program for causing an information processing device to execute an information process, comprising:

• a data processing step for causing a data processing unit of the information processing device to read encrypted content stored in a medium including a storage unit and to execute an encryption process and a reproduction process;
• and
• storing, by the medium, the encrypted content, an encryption key to be applied to a process of using encrypted content, and a media ID verification value that is a verification value based on a media ID that is an identifier of the medium,
• wherein, in the data processing step,
• calculating a verification value based on the media ID acquired from the medium, and executing a process of reproducing the encrypted content stored in the medium by data processing to which the encryption key is applied on condition that a matching process between the calculated verification value and the media ID verification value stored in the medium is established.