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

Claim 18:
19. The mobile terminal of claim 18, wherein the header information comprises the differential data encryption header information and the destination data encryption header information, and wherein before integrating the new version of the original data, the instructions further cause the processor to be configured to:
extract, using the update application, the destination data encryption header information from the header information, wherein the destination data encryption header information comprises message digest algorithm information of the differential encrypted data and encryption algorithm information used for signature;
forward, using the update application and the CA, the message digest algorithm information and the encryption algorithm information to the TA;
verify, using the TA, the signature of the differential encrypted data based on signature information; and
further integrate the new version of the original data based on the differential data and the old version of the original data when verification succeeds.