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

Claim 14:
15. A mobile terminal comprising:
a memory configured to store instructions; and
a processor coupled to the memory and configured to execute the instructions to cause the mobile terminal to be configured to:
receive, from a server, over-the-air (OTA) data comprising header information and differential encrypted data, wherein the header information comprises either differential data encryption header information or the differential data encryption header information and destination data encryption header information, and wherein the differential encrypted data is based on encrypting differential data or encrypting and signing the differential data;
verify, based on the destination data encryption header information, a signature of the differential encrypted data;
decrypt the differential encrypted data based on the differential data encryption header information to obtain the differential data;
obtain an old version of original data of a system software;
integrate a new version of the original data based on the differential data and the old version of the original data; and
upgrade an old version of the system software to a new version of the system software using the new version of the original data.