Management apparatus, computer program product, system, device, method, information processing apparatus, and server

A system comprising:

• a first management apparatus;
• a second management apparatus;
• and
• a plurality of devices that are connectable through a network, wherein
• the first management apparatus comprises:
• a storage configured to store therein pieces of information held by the devices;
• and
• one or more first processors configured to encrypt the pieces of information held by the devices and stored in the storage, and transmit the encrypted information to the second management apparatus,
• the second management apparatus comprises:
• one or more second processors;
• and
• a second transmitter, wherein
• the second processors are configured to:
• receive and decrypt the encrypted pieces of information held by the devices and stored in the storage from the first management apparatus;
• generate a list of inspection values indicating the pieces of information stored in the storage;
• and
• generate determination information including values of all digits of a bit string included in a first bloom filter based on the list;
• the second transmitter transmits the determination information to the respective devices;
• and
• the second processors are further configured to:
• acquire, from each of the devices, a determination result obtained by determining, based on the determination information, whether the inspection value indicating the information held by the device is included in the list;
• and
• based on determination results acquired from the respective devices, check whether the pieces of information stored in the storage are right information or not right information;
• wherein the storage stores therein device information including pieces of information individually held by the respective devices and stores therein group information including information held in common by devices belonging to a group,
• the second processors:
• generate a device list serving as the list of the inspection values indicating the device information stored in the storage;
• generate a group list serving as the list of the inspection values indicating the group information stored in the storage;
• generate device determination information including values of all digits of a bit string included in a first second bloom filter based on the device list;
• and
• generate group determination information including values of all digits of a bit string included in a second third bloom filter based on the group list, and
• the transmitter transmits the device determination information and the group determination information to the respective devices as the determination information.

A method executed in a management apparatus that manages pieces of information held by a plurality of devices, the management apparatus including storage configured to store therein the pieces of information held by the devices, the method comprising:

• generating, by the management apparatus, a list of inspection values indicating the pieces of information stored in the storage;
• generating, by the management apparatus, determination information including values of all digits of a bit string included in a first bloom filter based on the list;
• transmitting, by the management apparatus, the determination information to the respective devices;
• acquiring, by the management apparatus, from each of the devices, a determination result obtained by determining whether the inspection value indicating the information held by the device is included in the list based on the determination information;
• and
• based on determination results acquired from the respective devices, checking, by the management apparatus, whether the pieces of information stored in the storage are right information or not right information;
• wherein the storage stores therein device information including pieces of information individually held by the respective devices and stores therein group information including information held in common by devices belonging to a group,
• generating, by the management apparatus, a device list serving as the list of the inspection values indicating the device information stored in the storage;
• generating, by the management apparatus, e a group list serving as the list of the inspection values indicating the group information stored in the storage;
• generating, by the management apparatus, device determination information including values of all digits of a bit string included in a second bloom filter based on the device list;
• and
• generating, by the management apparatus, group determination information including values of all digits of a bit string included in a third bloom filter based on the group list, and
• the transmitter transmits the device determination information and the group determination information to the respective devices as the determination information.