Methods, Apparatuses, and Storage Mediums for Acquiring Legitimate Installation Packages

An apparatus, comprising:

• a processor;
• and
• a memory configured to store instructions executable by the processor,
• wherein the processor is configured to:
• acquire characteristic information of a first installation package, the characteristic information uniquely identifying codes of the first installation package;
• send the characteristic information to an authentication server, the characteristic information triggering the authentication server to feed back to the apparatus a differential package corresponding to the characteristic information when the authentication server determines that the first installation package is an illegitimate installation package based on the characteristic information;
• receive the differential package fed back by the authentication server, the differential package including a difference between the illegitimate installation package and a legitimate installation package corresponding to the illegitimate installation package;
• and
• combine the differential package with the first installation package to obtain the legitimate installation package.

A non-transitory computer-readable storage medium having stored therein instructions that, when executed by a processor of a mobile terminal, causes the mobile terminal to perform acts comprising:

• acquiring characteristic information of a first installation package, the characteristic information uniquely identifying codes of the first installation package;
• sending the characteristic information to an authentication server, the characteristic information triggering the authentication server to feed back to the terminal a differential package corresponding to the characteristic information when the authentication server determines that the first installation package is an illegitimate installation package based on the characteristic information;
• receiving the differential package fed back by the authentication server, the differential package including a difference between the illegitimate installation package and a legitimate installation package corresponding to the illegitimate installation package;
• and combining the differential package with the first installation package to obtain the legitimate installation package.