Patent ID: 9158465
Filing Date: 2015-10-13
Classification: G06F,H04L

Abstract:
1. A computer apparatus for performing authorization control on file block access, comprising: a computing system with at least one processor and memory, the processor being configured to: divide a file into a plurality of file blocks; embed tag data including at least file block authorization information into each file block; receive an access request to a component of a file comprising a file block comprising file data wherein the file block is embedded with tag data comprising at least file block authorization information; retrieve the file block; extract the file block authorization information from tag data embedded in the file block; determine whether the access request matches the extracted file block authorization information; and perform the access request if the access request matches the extracted file block authorization information by merging the file data in file blocks that constitute the file so as to perform an operation with respect to the file and after completion of the operation with respect to the file, embedding the tag data into the file blocks upon dividing the merged file data file into file blocks for storing.