Patent ID: 11947673
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 4:
5. The method of claim 1, wherein the old version of the original data comprises an old version of a file data block, an old version of a hash data block, and an old version of a check data block, wherein the new version of the original data comprises a new version of the file data block, a new version of the hash data block, and a new version of the check data block, wherein the old version of the check data block comprises signature data of a root hash value in the old version of the hash data block, wherein the old version of the hash data block enables checking the old version of the file data block, wherein the new version of the check data block comprises signature data of a root hash value in the new version of the hash data block, wherein the new version of the hash data block enables checking the new version of the file data block, and wherein the method further comprises:
removing the old version of the hash data block from the old version of the original data to obtain an updated old version of the original data;
removing the new version of the hash data block from the new version of the original data to obtain an updated new version of the original data; and
performing data block-based differentiation based on the updated old version of the original data and the updated new version of the original data to obtain the differential data.