Abstract: There is provided an information processing device including a holding unit configured to hold setting information regarding parental control for each user in association with user identification information, and a limit processing unit configured to limit usage of a predetermined function or device by the user on a basis of the setting information held by the holding unit.

Abstract: There is provided an information processing device including a holding unit configured to hold setting information regarding parental control for each user in association with user identification information, and a limit processing unit configured to limit usage of a predetermined function or device by the user on a basis of the setting information held by the holding unit.

Abstract: A management apparatus includes a registering unit configured to issue a first key corresponding to a first service in response to a request for registration with the first service from a first information processing apparatus; a storage unit configured to store an apparatus ID of the first information processing apparatus, the first key, and a second key corresponding to a second service while associating the apparatus ID, the first key, and the second key with each other; and a composite license issuing unit configured to issue a composite license including a first license and a second license, the first license including first encrypted data, which is a content key that is used to decrypt the encrypted content and that is encrypted with the first key, and the second license including second encrypted data, which is the content key that is encrypted with the second key.

Abstract: A content information providing system is disclosed which can protect the copyrights of contents while permitting users who do not purchase the contents to utilize the contents. A content information providing server includes a user information storage section for storing a user key unique to each user, a content key storage section for storing content keys unique to individual contents, a recommendation section for selecting a content to be recommended to the user, a content key encryption section for encrypting the selected content key with a user key of the user of a target of the recommendation, and a content information sender section for transmitting the encrypted content key to a content reproduction apparatus used by the user. The content reproduction apparatus includes a content information receiver section for receiving the content key, and a content key decryption section for decrypting the encrypted content key.

Abstract: A content information providing system is disclosed which can protect the copyrights of contents while permitting users who do not purchase the contents to utilize the contents. A content information providing server includes a user information storage section for storing a user key unique to each user, a content key storage section for storing content keys unique to individual contents, a recommendation section for selecting a content to be recommended to the user, a content key encryption section for encrypting the selected content key with a user key of the user of a target of the recommendation, and a content information sender section for transmitting the encrypted content key to a content reproduction apparatus used by the user. The content reproduction apparatus includes a content information receiver section for receiving the content key, and a content key decryption section for decrypting the encrypted content key.

Abstract: A content information providing system is disclosed which can protect the copyrights of contents while permitting users who do not purchase the contents to utilize the contents. A content information providing server includes a user information storage section for storing a user key unique to each user, a content key storage section for storing content keys unique to individual contents, a recommendation section for selecting a content to be recommended to the user, a content key encryption section for encrypting the selected content key with a user key of the user of a target of the recommendation, and a content information sender section for transmitting the encrypted content key to a content reproduction apparatus used by the user. The content reproduction apparatus includes a content information receiver section for receiving the content key, and a content key decryption section for decrypting the encrypted content key.

Abstract: There is provided a group registration device or the like which is capable of simplifying registration processing to readily perform group registration while retaining secure registration processing. A group registration device 10 includes a registration request detecting unit, a session ID generating unit for generating a session ID, a registration request message sending unit, a registration reply message receiving unit, a verification unit 231 for verifying non-redundancy of a message, and a storage unit 241 for storing an ID list included in a registration reply message in a storage region so as to be associated with a group ID. Within the same registration session, the registration request message is sent once, the registration reply message is received once, and processing is restricted to sending of the registration request message and receiving of the registration reply message.

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.

Abstract: A management apparatus includes a registering unit configured to issue a first key corresponding to a first service in response to a request for registration with the first service from a first information processing apparatus; a storage unit configured to store an apparatus ID of the first information processing apparatus, the first key, and a second key corresponding to a second service while associating the apparatus ID, the first key, and the second key with each other; and a composite license issuing unit configured to issue a composite license including a first license and a second license, the first license including first encrypted data, which is a content key that is used to decrypt the encrypted content and that is encrypted with the first key, and the second license including second encrypted data, which is the content key that is encrypted with the second key.

Abstract: An information receiving apparatus purchasing content through a service transmits a license-issuing request including information about a client type representing the type of the information receiving apparatus to an information transmitting apparatus. In the information transmitting apparatus, a license-issuing request processing function part analyzes data on the license-issuing request, and a request-sorting function part selects, in accordance with information about the combination of a profile ID representing the type of the service and the client type, a license-issuing request conversion function part that performs processing corresponding to the combination. The selected license-issuing request conversion function part converts the data into data corresponding to performance of the information receiving apparatus in accordance with the terms of use for using the content and the profile ID. A license-issuing function part creates a license having a predetermined format using the data.

Abstract: A content information providing system is disclosed which can protect the copyrights of contents while permitting users who do not purchase the contents to utilize the contents. A content information providing server includes a user information storage section for storing a user key unique to each user, a content key storage section for storing content keys unique to individual contents, a recommendation section for selecting a content to be recommended to the user, a content key encryption section for encrypting the selected content key with a user key of the user of a target of the recommendation, and a content information sender section for transmitting the encrypted content key to a content reproduction apparatus used by the user. The content reproduction apparatus includes a content information receiver section for receiving the content key, and a content key decryption section for decrypting the encrypted content key.

Abstract: An information receiving apparatus purchasing content through a service transmits a license-issuing request including information about a client type representing the type of the information receiving apparatus to an information transmitting apparatus. In the information transmitting apparatus, a license-issuing request processing function part analyzes data on the license-issuing request, and a request-sorting function part selects, in accordance with information about the combination of a profile ID representing the type of the service and the client type, a license-issuing request conversion function part that performs processing corresponding to the combination. The selected license-issuing request conversion function part converts the data into data corresponding to performance of the information receiving apparatus in accordance with the terms of use for using the content and the profileID. A license-issuing function part creates a license having a predetermined format using the data.