Abstract: A content reproduction system includes an information processing terminal (102) and a secure device (103). The information processing terminal (102) receives a copyright protection application program (315) from an application distribution server (113). The copyright protection application program includes a first program having a first execution format executable in the information processing terminal (102) and a second program having a second execution format different from the first execution format and executable in the secure device (103). The second program is encrypted with a program key (515) held in the secure device (103). By extracting and executing the first program, the information processing terminal (102) extracts the second program and transmits the second program to the secure device (103).

Abstract: An information management method collects log information of one or more home electrical apparatuses corresponding to service providers. Display screen data is generated which indicates a status of the log information. The display screen data includes groups of information which each contain information on an apparatus, a service provider corresponding to the apparatus, and log information output from the apparatus. Provision of the log information of each group is individually selectable. The display screen data is provided via a network to a display terminal that performs access to a server device. Information is received from the display terminal, which indicates that selection on whether or not provision of the log information is performed. Provision of the log information is stopped on the selected group when a determination is made that refusal of provision of the log information on the selected group is performed.

Abstract: An information management method includes collecting log information of one or more home electrical apparatuses, generating display screen data indicating a status of the log information of the apparatuses corresponding service providers based on the collected log information, where the display screen data includes groups of information each contain information on an apparatus, a service provider corresponding to the apparatus, and log information output from the apparatus, and provision of the log information of each group is individually selectable, providing the display screen data via a network to a display terminal that performs access to a server device, receiving information from the display terminal, which indicates that selection on whether or not provision of the log information is performed, and stopping provision of the log information on the selected group when a determination is made that the refusal of provision of the log information on the selected group is performed.

Abstract: When it is determined that a position of the display terminal is within a range of a prescribed distance from the house and when it is determined that the log information and the information indicating the operational state of the one electric home appliance are not consistent with each other, the server provides the display terminal with information on a possibility of a malfunction of the one electric home appliance while the position of the display terminal is still within the range of the prescribed distance from the house.

Abstract: An authentication system according to the present disclosure includes a first controller connected to a first server via a first network, a second controller connected to a second server via a second network, and a device. The device compares a next issue date described in a first certificate revocation list acquired from the first controller and an issue date described in a second certificate revocation list acquired from the second controller thereby determining whether the first controller is invalid or not.

Abstract: A data processing method for processing usage history data of at least one electrical device used by a user, including: obtaining first usage history data indicating a usage history of at least one electrical device used by the user; obtaining second usage history data indicating a fixed dummy usage history; generating third usage history data by combining the first usage history data and the second usage history data; and transmitting the third usage history data from a first apparatus to a second apparatus.

Abstract: A data search method of a first device storing multiple sets of privacy data acquired from multiple persons and multiple reference features corresponding to the multiple sets of privacy data, where the multiple reference features each are expressed by an n-dimensional vector, includes receiving first encrypted features from a second device connected to the first device, generating multiple second converted features by a second conversion of the multiple reference features, generating of multiple second encrypted features by encrypting the multiple second converted features using inner product encryption, acquiring multiple inner product values by performing inner product computation of each of the first encrypted features and the multiple second encrypted features, determining whether or not the first features and the first reference features are similar, and transmitting of first privacy data corresponding to the first reference features out of the multiple sets of privacy data to the second device.

Abstract: A battery history information management device for managing history information of a secondary battery includes: a connection determination unit which determines whether a charge/discharge device connected to the secondary battery is (i) a first charge/discharge device connected via a communication network to a server which manages the history information or (ii) a second charge/discharge device not connected to the server; a battery history recording unit which records, when it is determined that the charge/discharge device is the second charge/discharge device, charge/discharge history for second charge/discharge device into battery history data; and a history upload control unit which transmits, when it is determined that the charge/discharge device is the first charge/discharge device, the battery history data to the server via the first charge/discharge device.

Abstract: A smart meter includes: a power supply control unit which causes stoppage of a supply of power passing through the smart meter to an television and so on, when an RD command to stop the supply is received; a first communication unit which performs a first communication through which the RD command is received; a second communication unit which performs a second communication; and a communication control unit which: causes the performance of the first communication before the RD command is received; and prohibit the performance of the first communication and cause only the performance of the second communication, after the RD command is received.

Abstract: A management apparatus which collects, from a home appliance, home appliance information which is information related to the home appliance and provides a user with to-be-provided information which is information obtained from the collected home appliance information, includes: a managing unit which manages the home appliance information; and a home appliance information holding unit which holds, in association with each other, (i) the home appliance information and (ii) share information which is for sharing the home appliance information and is associated with the user. The managing unit refers to data held by the home appliance information holding unit when a request for to-be-provided information is issued by the user, obtains the home appliance information held in association with share information identical to the share information associated with the user, and provides the user with to-be-provided information obtained from the obtained information.

Abstract: A similar-information search method includes obtaining an instruction indicating which of an encrypted search and an unencrypted search a data computation device is to perform; generating an encrypted feature quantity and transmitting the encrypted feature quantity to the data computation device; generating an encrypted similarity value and transmitting the encrypted similarity value; and receiving encrypted reference data from the data computation device and decrypting the encrypted reference data. A homomorphic encryption scheme that makes decryption by the data computation device unsuccessful is used when the encrypted search is performed, whereas an encryption scheme that makes decryption by the data computation device successful is used when the unencrypted search is performed.

Abstract: To aim provide a software update apparatus including an install module group composed of a plurality of install modules. Each of the install modules has a function of receiving, from an external server, a replacement protection control module to be used for updating a protection control module having a function of verifying whether a predetermined application has been tampered with. Each of the install modules simultaneously running is verified by at least another one of the install modules simultaneously running, as to whether the install module has a possibility of performing malicious operations. If any of the install modules is verified as having the possibility of performing the malicious operations, any another one of the install modules that is verified as not having the possibility revokes the any install module verified as having the possibility.

Abstract: A smart meter includes: a power supply control unit which causes stoppage of a supply of power passing through the smart meter to an television and so on, when an RD command to stop the supply is received; a first communication unit which performs a first communication through which the RD command is received; a second communication unit which performs a second communication; and a communication control unit which: causes the performance of the first communication before the RD command is received; and prohibit the performance of the first communication and cause only the performance of the second communication, after the RD command is received.

Abstract: In an authentication method according to the present disclosure, (1) a device transmits device history information with a CRL added thereto (hereinafter, device history information with added CRL) to a controller, (2) the controller transmits the device history information with added CRL to a server, and (3) if the version of the CRL included in the device history information with added CRL is older than the version of the CRL stored on the server, the server judges that the controller is unauthorized.

Abstract: A method of managing map information including: attaching a retrieval identifier, according to input information, to map information which is obtained by retrieval based on the input information, the retrieval identifier indicating whether the map information is personal data or public data; storing the map information as the personal data into a storage device, the map information being indicated to be the personal data by the retrieval identifier attached in the attaching, and storing the map information as the public data into the storage device, the map information being indicated to be the public data by the retrieval identifier; and executing a navigation process using at least one of the personal data and the public data which are stored in the storage device.

Abstract: An information providing apparatus includes: an inputter that obtains log information and personal information corresponding thereto; a tentative ID giver that gives each tentative ID to the personal information at each predetermined timing; a first storage that stores correspondence-relationship information indicating a correspondence relationship between the personal information and the each tentative ID; a receiver that receives a request for outputting information including a requested tentative ID identified by a current tentative ID given and the one past timing when the requested ID was given; an information processor that determines, in accordance with the request, link-relationship information indicating a correspondence relationship between the requested tentative ID and the current tentative ID; a second storage that stores the determined link-relationship information; and an outputter that outputs first information including the requested tentative ID or second information indicating that first-in

Abstract: A similar-information search method includes receiving, with a data computation device, an encrypted feature quantity and an encrypted similarity value from a user terminal device; calculating, with the data computation device, an encrypted distance between an encrypted reference feature quantity and the encrypted feature quantity; determining, with the data computation device, whether the encrypted distance matches the encrypted similarity value; generating, with the data computation device, encrypted reference data that is information obtained by encrypting reference data if it is determined that the encrypted distance matches the encrypted similarity value; and transmitting, with the data computation device, the generated encrypted reference data to the user terminal device.

Abstract: An access control method including: receiving a log information item indicating use history of electrical equipment that is used together with an intended product; receiving product information including information for identifying the intended product; storing the log information item received in the receiving of a log information item and the product information received in the receiving of product information, in association with each other; and controlling whether or not to allow access to the log information item based on the product information associated with the log information item when access to the log information item is attempted.

Abstract: A first device, upon detecting participation in an authentication system, transmits new and old identification information of a first certificate revocation list that the first device manages to a second device. In a case where the new and old identification information of a second certificate revocation list that the second device manages is older than the new and old identification information of the received first certificate revocation list, the second device transmits a transmission request for the first certificate revocation list to the first device. Upon receiving the transmission request for the first certificate revocation list from the second device, the first device transmits the first certificate revocation list to the second device. the second device updates the second certificate revocation list using the received first certificate revocation list.

Abstract: This data providing method is carried out by a computer (460) built in a data processing system (1) which is designed to collect log information from electronic devices through a network (30) and provide services based on that log information for authenticated users. The method includes: receiving a fridge's (100a, 100b) log information through the network; generating display data, representing a trend of change of a recovery time that indicates how long it takes for the fridge's inside temperature to recover a preset operating temperature since the fridge's door was closed, by reference to pieces of information which are included in the fridge's log information and which indicate (i) the preset operating temperature inside the fridge, (ii) the temperature of the ambient surrounding the fridge, (iii) a temperature inside the fridge, and (iv) opening and closing history of the fridge; and providing the display data for an authenticated user's display terminal (130a, 130b).