Utilization management system, management device, utilization control device, utilization management method, and computer-readable program

A utilization management system that manages use of a usage target object, comprising:

• a utilization control device that controls use of the usage target object by locking/unlocking, access control or encrypting/decrypting based on a use permit;
• a management device that manages the usage target object by association with the utilization control device;
• a provider terminal that sets hole data required for verification of the use permit in the utilization control device;
• and
• a user terminal that notifies the utilization control device of the use permit, wherein
• the management device comprises:
• a transaction management means that manages transaction information including conditions for using the usage target object;
• an object management means that manages a first secret key/public key in association with the utilization control device;
• a hole management means that manages a second secret key/public key in association with the utilization control device;
• a hole data processing means that generates a first signature on the hole data including the second public key managed by the hole management means by using the first secret key managed by the object management means to send the hole data and the first signature to the provider terminal;
• and
• a use permit processing means that generates a second signature on the use permit including the transaction information managed by the transaction management means by using the second secret key managed by the hole management means to send the use permit and the second signature to the user terminal;
• the provider terminal sends the hole data and the first signature received from the management device to the utilization control device via Near Field Communication;
• the user terminal sends the use permit and the second signature received from the management device to the utilization control device via the Near Field Communication;
• and
• the utilization control device communicates only via the Near Field Communication, and comprises:
• a hole setting means that verifies the first signature received together with the hole data from the provider terminal by using pre-registered the first public key to set the hole data in the utilization control device itself when the verification being established;
• a transaction information obtaining means that verifies the second signature received together with the use permit from the user terminal by using the second public key included in the hole data set in the utilization control device itself to obtain the transaction information included in the use permit when the verification being established;
• and
• a lifting means that lifts restriction on use of the usage target object with referring to the transaction information obtained by the transaction obtaining means when conditions specified by the transaction information being satisfied.

A management device for managing a utilization control device that controls, based on a use permit, use of a usage target object by locking/unlocking, access control, or encrypting/decrypting, comprising:

• a transaction management means that manages transaction information that includes conditions for using the usage target object;
• an object management means that manages a first secret key/public key by association with the utilization control device;
• a hole management means that manages a second secret key/public key by association with the utilization control device;
• a hole data processing means that generates a first signature on hole data required for verification of the use permit and including the second public key managed by the hole management means by using the first secret key managed by the object management means to send the hole data and the first signature to a provider terminal setting the hole data to the utilization control device;
• and
• a use permit processing means that generates a second signature on the use permit including the transaction information managed by the transaction management means by using the second secret key managed by the hole management means to send the use permit and the second signature to a user terminal notifying the utilization control device of the use permit.

A utilization control device that controls use of a usage target object by locking/unlocking, access control, or encrypting/decrypting, based on a use permit, wherein

• the utilization control device communicates only via Near Field Communication, and comprises:
• a hole setting means that verifies a first signature received together with hole data required for verification of the use permit from a provider terminal by using a pre-registered first public key to set the hole data in the utilization control device itself when the verification being established;
• and
• a lifting means that verifies a second signature received together with use permit from a user terminal by using a second public key included in the hole data set in the utilization control device itself to refer to transaction information included in the use permit when the verification being established and to lift restriction on use of the usage target object when conditions specified by the transaction information being satisfied.

A utilization management method for managing use of a usage target object by using:

• a utilization control device that controls use of the usage target object by locking/unlocking, access control, or encrypting/decrypting based on a use permit;
• a management device that manages the usage target object by association with the utilization control device;
• a provider terminal that sets hole data required for verification of the use permit in the utilization control device;
• and a user terminal that notifies the utilization control device of the use permit, wherein
• the management device
• manages transaction information including conditions for using the usage target object, and manages a first secret key/public key and a second secret key/public key in association with the utilization control device;
• generates a first signature on the hole data including the second public key by using the first secret key to send the hole data and the first signature to the provider terminal;
• and
• generates a second signature on the use permit including the transaction information by using the second secret key to send the use permit and the second signature to the user terminal;
• the provider terminal
• sends the hole data and the first signature received from the management device to the utilization control device via Near Field Communication;
• the user terminal
• sends the use permit and the second signature received from the management device to the utilization control device via the Near Field Communication;
• the utilization control device:
• communicates only via the Near Field Communication;
• verifies the first signature received together with the hole data from the provider terminal by using a pre-registered first public key to set the hole data in the utilization control device itself when the verification being established;
• and
• verifies the second signature received together with the use permit from the user terminal by using the second public key included in the hole data set in the utilization control device itself to refer to the transaction information included in the use permit when the verification being established and to lift restriction on use of the usage target object if the conditions specified by the transaction information being satisfied.

A computer-readable program, wherein

• the program makes a computer function as a management device that manages a utilization control device for controlling use of a usage target object by locking/unlocking, access control, or encrypting/decrypting based on a use permit;
• and
• the management device comprises:
• a transaction management means that manages transaction information including conditions for using the usage target object;
• an object management means that manages a first secret key/public key in association with the utilization control device;
• a hole management means that manages a second secret key/public key in association with the utilization control device;
• a hole data processing means that generates a first signature on hole data required for verification of the use permit and including the second public key managed by the hole management means by using the first secret key managed by the object management means to send the hole data and the first signature to a provider terminal setting the hole data to the utilization control device;
• and
• use permit processing means that generates a second signature on the use permit including the transaction information managed by the transaction management means by using the second secret key managed by the hole management means to send the use permit and the second signature to a user terminal notifying the utilization control device of the use permit.

A computer-readable program, wherein

• the program makes a computer function as a utility control device that controls use of a usage target object by locking/unlocking, access control, or encrypting/decrypting, based on a use permit;
• and
• the utilization control device:
• communicates only via Near Field Communication, and comprises:
• a hole setting means that verifies the first signature received together with the hole data from the provider terminal by using pre-registered the first public key to set the hole data in the utilization control device itself when the verification being established;
• and
• a lifting means that lifts restriction on use of the usage target object with referring to the transaction information obtained by the transaction obtaining means when conditions specified by the transaction information being satisfied.