Information processing device and method
First Claim
1. An information processing device comprising:
- a recording medium interface for executing reading of data from an information recording medium; and
a data processing unit for executing recording processing of new data either generated or obtained applying information obtained from said information recording medium;
wherein said information recording medium is an information recording medium storing recorded data in increments of content management units including encrypted data encrypted by unit keys each of which are set as different encryption keys;
and wherein said data processing unit obtains a unit key corresponding to a content management unit to which said obtained information belongs or a unit key corresponding to a new content management unit, executes encryption processing of said new data applying the obtained unit key, and executes recording processing with the generated encrypted data as data configuring the content management unit.
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Accused Products
Abstract
A configuration is provided which enables usage management and secure data management of data newly generated or obtained that is different from data already stored in an information recording medium. New data such as information which the user has newly generated or downloaded related to content information increments of content management information stored in an information recording medium is recorded as configuration data of the content management unit, in the form of encrypted data to which a unit key corresponding to the content management unit, or a unit key corresponding to a new content management unit, has been applied. According to this configuration, secure data management and usage management is realized for new data the same as with data corresponding to original units.
80 Citations
35 Claims
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1. An information processing device comprising:
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a recording medium interface for executing reading of data from an information recording medium; and
a data processing unit for executing recording processing of new data either generated or obtained applying information obtained from said information recording medium;
wherein said information recording medium is an information recording medium storing recorded data in increments of content management units including encrypted data encrypted by unit keys each of which are set as different encryption keys;
and wherein said data processing unit obtains a unit key corresponding to a content management unit to which said obtained information belongs or a unit key corresponding to a new content management unit, executes encryption processing of said new data applying the obtained unit key, and executes recording processing with the generated encrypted data as data configuring the content management unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An information processing device comprising:
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a recording medium interface for executing reading of data from an information recording medium; and
a data processing unit for executing processing of a program included in information read from said information recording medium;
wherein said data processing unit is configured to determine the type of the information recording medium from which the program has been read, and to execute the program under the condition that the program is of a type regarding which execution permission has been set beforehand. - View Dependent Claims (15)
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16. An information processing method comprising:
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a data reading step for reading of data from an information recording medium; and
a data processing step for executing recording processing of new data either generated or obtained applying information obtained from said information recording medium;
wherein said information recording medium is an information recording medium storing recorded data in increments of content management units including encrypted data encrypted by unit keys each of which are set as different encryption keys;
and wherein said data processing step includes an obtaining step for obtaining a unit key corresponding to a content management unit to which said obtained information belongs or a unit key corresponding to a new content management unit, a step for executing encryption processing of said new data applying the obtained unit key, and a step for executing recording processing with the generated encrypted data as data configuring the content management unit. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. An information processing method comprising:
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a data reading step for reading data from an information recording medium; and
a data processing step for executing processing of a program included in information read from said information recording medium;
wherein said data processing step includes a step for determining the type of the information recording medium from which the program has been read, and executing of the program under the condition that the program is of a type regarding which execution permission has been set beforehand. - View Dependent Claims (30)
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31. A computer program for executing an information processing method, comprising:
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a data reading step for reading data from an information recording medium; and
a data processing step for executing recording processing of new data either generated or obtained applying information obtained from said information recording medium;
wherein said information recording medium is an information recording medium storing recorded data in increments of content management units including encrypted data encrypted by unit keys each of which are set as different encryption keys;
and wherein said data processing step includes an obtaining step for obtaining a unit key corresponding to a content management unit to which said obtained information belongs or a unit key corresponding to a new content management unit, a step for executing encryption processing of said new data applying the obtained unit key, and a step for executing recording processing with the generated encrypted data as data configuring the content management unit. - View Dependent Claims (32, 33, 34)
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35. A computer program for executing information processing method, comprising:
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a data reading step for reading of data from an information recording medium; and
a data processing step for executing processing of a program included in information read from said information recording medium;
wherein said data processing step includes a step for determining the type of the information recording medium from which the program has been read, and executing of the program under the condition that the program is of a type regarding which execution permission has been set beforehand.
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Specification