Device, system and method for performing integrity verification based on distributed delegator

An individual device for performing an integrity verification based on a distributed delegator, which performs an integrity verification by being linked with a remote device management server, the individual device comprising:

• a random data generator configured to generate at least one of secret information, a nonce, and an encryption key;
• a verification data repository configured to store agreement information received from the remote device management server, the secret information, the nonce, and the encryption value;
• a memory traversal unit configured to perform memory scan and data extraction when evaluating a reliability of a verification delegator and measuring an integrity of a verification target device;
• a checksum calculator configured to calculate a checksum for evaluating the reliability of the verification delegator and measuring the integrity of the verification target device;
• a verification delegator selector configured to generate a challenge data based on the secret information when the individual device is selected as the verification delegator;
• a verifier reliability determiner configured to determine a reliability of the individual device selected as the verification delegator;
• and
• a distribution verification determiner configured to transmit a challenge data to the verification target device, and to perform an integrity verification for the verification target device when receiving a response to a challenge from the verification target device.

A method for performing an integrity verification of an individual device based on a distributed delegator, which is performed by linking a plurality of individual devices connected based on a network with a remote device management server, the method comprising:

• receiving a request of integrity verification for a verification target device which is one of the plurality of individual devices;
• selecting a verification delegator from among remaining individual devices excluding the verification target device of the plurality of individual devices;
• and
• verifying an integrity of the verification target device by the individual device selected as the verification delegator.