Patent ID: 8595512

Claim:
A data control method for cloud storage comprising: converting original data into irreversible data blocks via a preset method to form a physical part of the original data; storing the physical part of the original data in a cloud storage data center; outputting information, which is necessary for restoring the physical part back to the original data, as a logical part of the original data; and storing the logical part of the original data in a storage media, which is controlled by the owner of the original data; wherein the converting step comprises: dividing the original data, starting from the data head by a predetermined length, into several data blocks, and de-duplicating the data blocks before forming source data; restructuring contents of the source data to form new data; and encrypting the new data with a one-time pad encryption algorithm to form the physical part of the original data; wherein the restructuring step comprises: acquiring data in the same position of each source data, based on queuing discipline of preset fixed order; and combining the acquired data in order to form new data.