Abstract: A server device is provided comprising: at least one processor, wherein the at least one processor is configured to execute a computer readable instructions so as to: receive at least one of person-under-restriction related information related to a person under restriction whose usage of a restricted item is restricted or usage related information related to usage of the restricted item by the person under restriction instructed by an instructor; and generate authentication key information generated based on at least one of the received person-under-restriction related information or the received usage related information, the authentication key information being used to authenticate input key information generated based on predetermined input-key generation rule information and the authentication key information and input to the restricted item by the person under restriction, and to release restriction of the restricted item.

Abstract: An object of the present invention is to perform offline management of use of usage target object by a user having a ticket, while reducing risk on security. A use permit that includes transaction information specifying usage conditions for the user to use the usage target object, is added as a two-dimensional code printed on a ticket. A utilization management device takes an image of the two-dimensional code added to the ticket to read the use permit from the image. Then, the utilization management device verifies a signature added to the use permit by using a public key provided in advance by a provider of the usage target object. If verification is established, the utilization management device refers transaction information included in the use permit to permit for user to use of the usage target object when usage condition specified by the transaction information are satisfied.

Abstract: The present invention reduces security risks while improving the convenience of use management technology for a usage target object. A utilization control device (1), upon receiving hole data with a first signature from a provider terminal (3), verifies the first signature by using a first public key, to set the hole data to the device (1) itself when the signature verification is established. Furthermore, upon receiving a use permit with a second signature from a user terminal (4), the utilization control device (1) verifies the second signature by using a second public key included in the hole data, transmits a nonce to the user terminal (4), receives a third signature to the nonce from the user terminal (4), and verifies the third signature by using a third public key included in the use permit.

Abstract: A rotation detection device according to one embodiment includes an angular velocity sensor attached to a rotating body that rotates and configured to detect an angular velocity of the rotating body, and at least one processor configured to perform a control based on the angular velocity detected by the angular velocity sensor, in which the at least one processor is configured to perform processing for calculating a first angle of the rotating body before a rotation operation is performed on the rotating body and a second angle of the rotating body after the rotation operation is performed on the rotating body based on the angular velocity sensor.

Abstract: According to the present invention, the convenience of a utilization management technology for a usage target object is enhanced and the security risk is reduced. This utilization control device (1) is capable of communicating only in a near field communication (63) and stores a first public key that is paired with a first secret key stored in a management device (2). When hole data is received with a first signature from a provider terminal (3), the first signature is verified by means of the first key, and when the signature verification is established, the hole data is set to an own device (1). The hole data includes a second public key that is paired with a second secret key stored in the management device (2). When a utilization permit card is received with a second signature from a user terminal (4), the second signature is verified with the second public key, and when the signature verification is validated, transaction information included in the utilization permit card is acquired.

Abstract: The present invention reduces security risks while improving the convenience of utilization control technology of an usage target object. A use permit issuance device (1): stores, for each user, authentication data and an authentication method in association with identification information of one or more users and upon receipt of a use permit issuance request from a setting terminal (5), issues a use permit to generate a signature, and identifies the authentication data associated with the user identification information and the authentication method included in the issuance request, and notifies the setting terminal (5) of setting information including the use permit, the signature and the authentication data. The setting terminal (5) registers the setting information in a use permit notification device (4).

Abstract: The present invention reduces security risks while improving convenience in a utilization control technique of a usage target object. A utilization control device (1) can communicate only via Near Field Communication, and is separated from a network. And in the utilization control device (1), a hole data including a public key is set. In a use permit notification device (2), a use permit and signature are registered for each user ID. The signature is generated by using a private key paired with the public key included in the hole data. The use permit notification device (2) sends the use permit and signature in connection with the ID read from an ID card (3) to the utilization control device (1) via the Near Field Communication.