Abstract: An ID switching device (10) includes an ID request unit (16) and an ID determination unit (17). The ID request unit (16) outputs an ID request (16a) that requests switching to a new ID. The ID determination unit (17) refers to rule information (12a) and history information (15a) when the ID request (16a) is outputted, and determines an ID that agrees with the rule information (12a), as the new ID. The rule information (12a) is information for determining the new ID. In the rule information (12a), a history condition that is a use history of the new ID is defined as a condition for determining the new ID. The history information (15a) is information having a plurality of history records in each of which an ID and a use history of the ID are associated.

Abstract: In a search device (102), a data search unit (233) acquires an encrypted query including one keyword from a data storage unit (232), the encrypted query being stored in the storage unit (232) since before the encrypted data is received by the data reception unit (231). The data search unit (233) determines whether a value of the encrypted data and the keyword of the encrypted query coincide, with both of the encrypted data and the encrypted query remaining encrypted. A data transmission unit (234) transmits identification data indicating an identifier of the encrypted query when it is determined by the data search unit (233) that the value of the encrypted data and the keyword of the encrypted query coincide.

Abstract: Using a dependency table generated from communication with a component in operation of a system configuration element and describing the component in operation of each system configuration element and a dependency between the system configuration elements, and a CFIA analysis table which describes a redundancy detail of each system configuration element, a design information integration part associates the redundancy detail to the component in operation of each system configuration element. A display part displays the component in operation of each system configuration element and a dependency between system configuration elements. Based on associating by the design information integration part, the display part displays the redundancy detail of each system configuration element in correspondence with displaying the component in operation of each system configuration element.