APPARATUS, INFORMATION PROCESSING APPARATUS, MANAGEMENT METHOD, AND INFORMATION PROCESSING METHOD
First Claim
1. A management apparatus supplying a license for use of content to an information processing apparatus, the management apparatus comprising:
- a group management unit configured to register at least one information processing apparatus in each group and to deliver a group key specific to each group to the information processing apparatus registered in the group;
a storage unit configured to store an ID of the information processing apparatus registered in each group, a group ID of the group to which the information processing apparatus belongs, and the group key, which are in associated with each other;
a license issuing unit configured to issue a license which includes use conditions of the content and a content key with which encrypted content is decrypted and in which at least either of the use conditions of the content and the content key is encrypted with the group key, in response to a request from the information processing apparatus; and
a right information issuing unit configured to issue right information used for permitting the use of the content in a specified usage mode on the basis of the license to the information processing apparatus registered in the group, to which the use of the content in the specified usage mode is permitted.
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Accused Products
Abstract
A management apparatus supplying a license for use of content to an information processing apparatus includes a group management unit that registers at least one information processing apparatus in each group and delivers a group key specific to each group to the information processing apparatus; a storage unit that stores an ID of the information processing apparatus associated with a group ID of the group and the group key; a license issuing unit that issues a license including use conditions of the content and a content key with which encrypted content is decrypted, at least either of the use conditions of the content and the content key being encrypted with the group key; and a right information issuing unit that issues right information used for permitting the use of the content in a specified usage mode on the basis of the license to the permitted information processing apparatus.
53 Citations
20 Claims
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1. A management apparatus supplying a license for use of content to an information processing apparatus, the management apparatus comprising:
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a group management unit configured to register at least one information processing apparatus in each group and to deliver a group key specific to each group to the information processing apparatus registered in the group; a storage unit configured to store an ID of the information processing apparatus registered in each group, a group ID of the group to which the information processing apparatus belongs, and the group key, which are in associated with each other; a license issuing unit configured to issue a license which includes use conditions of the content and a content key with which encrypted content is decrypted and in which at least either of the use conditions of the content and the content key is encrypted with the group key, in response to a request from the information processing apparatus; and a right information issuing unit configured to issue right information used for permitting the use of the content in a specified usage mode on the basis of the license to the information processing apparatus registered in the group, to which the use of the content in the specified usage mode is permitted. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An information processing apparatus comprising:
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a storage unit configured to store a group key, a license, and right information used for permitting the use of content in a predetermined usage mode on the basis of the license, the group key being specific to a group in which at least one information processing apparatus is registered by a management apparatus, the license including use conditions of the content and a content key with which encrypted content is decrypted, at least either of the use conditions of the content and the content key being encrypted with the group key; and a use controlling unit configured to decrypt the license with the group key stored in the storage unit in response to a request to use the content in a specified usage mode to control the use of the content on the basis of the decrypted license and the presence of the right information corresponding to the specified usage mode. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A management method of supplying a license for use of content to an information processing apparatus, the management method comprising the steps of:
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registering at least one information processing apparatus which belongs to the same group in one group; delivering a group key specific to the group to the information processing apparatus registered in the group; storing an ID of the information processing apparatus registered in the same group, a group ID of the group to which the information processing apparatus belongs, and the group key, which are associated with each other; issuing a license which includes use conditions of the content and a content key with which encrypted content is decrypted and in which at least either of the use conditions of the content and the content key is encrypted with the group key; and issuing right information used for permitting the use of the content in a specified usage mode on the basis of the license to the information processing apparatus registered in the group, to which the use of the content in the specified usage mode is permitted.
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18. An information processing method comprising the steps of:
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storing a group key, a license, and right information used for permitting the use of content in a predetermined usage mode on the basis of the license in a storage unit, the group key being specific to a group in which at least one information processing apparatus is registered by a management apparatus, the license including use conditions of the content and a content key with which encrypted content is decrypted, at least either of the use conditions of the content and the content key being encrypted with the group key; decrypting the license with the group key in response to a request to use the content in a specified usage mode; and controlling the use of the content on the basis of the use conditions in the decrypted license and the presence of the right information corresponding to the specified usage mode.
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19. A management apparatus supplying a license for use of content to an information processing apparatus, the management apparatus comprising:
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group managing means for registering at least one information processing apparatus in each group and delivering a group key specific to each group to the information processing apparatus registered in the group; storing means for storing an ID of the information processing apparatus registered in each group, a group ID of the group to which the information processing apparatus belongs, and the group key, which are in associated with each other; license issuing means for issuing a license which includes use conditions of the content and a content key with which encrypted content is decrypted and in which at least either of the use conditions of the content and the content key is encrypted with the group key, in response to a request from the information processing apparatus; and right information issuing means for issuing right information used for permitting the use of the content in a specified usage mode on the basis of the license to the information processing apparatus registered in the group, to which the use of the content in the specified usage mode is permitted.
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20. An information processing apparatus comprising:
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storing means for storing a group key, a license, and right information used for permitting the use of content in a predetermined usage mode on the basis of the license, the group key being specific to a group in which at least one information processing apparatus is registered by a management apparatus, the license including use conditions of the content and a content key with which encrypted content is decrypted, at least either of the use conditions of the content and the content key being encrypted with the group key; and use controlling means for decrypting the license with the group key stored in the storage means in response to a request to use the content in a specified usage mode to control the use of the content on the basis of the decrypted license and the presence of the right information corresponding to the specified usage mode.
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Specification