DATA MANAGEMEMT APPARATUS FOF SECURELY UPDATING DYNAMIC DATA AND OPERATING METHOD THEREOF

摘要

The method of operating a data management device according to the present invention includes the steps of dividing data into a plurality of data blocks in a client device, generating tags corresponding to the plurality of data blocks in the client device, in the client device Generating a representative value by accumulating the tags, generating a client signature value by signing the representative value and a counter value corresponding to the last updated data block among the plurality of data blocks in the client device, and the The client device may include transmitting the data and the client signature value to a server.