Anti-repackaging method and apparatus

Abstract

The invention discloses an anti-repackaging method and apparatus. The method comprises the steps of running a target file in an installation package and loading a secure dynamic library in the installation package; and according to a code in the target file, executing the following steps of obtaining digital watermark information embedded in the target file and verification information stored in the secure dynamic library; and according to the digital watermark information and the verification information, verifying whether the installation package is a re-packaged installation package or not. The installation package contains the verification code, so that the installation package verification process of a system cannot be avoided no matter how to transform the operation system, the problem that whether the installation package is repackaged or not cannot be effectively verified sometimes when the system verifies whether the installation package is repackaged or not by checking a self signature of the installation package in the prior art is solved, and the problem that the verification efficiency is relatively low sometimes when the system verifies whether the installation package is re-packaged or not by calculating a hash value of the installation package in the prior art is solved.

Description

technical field [0001] The present application relates to the field of computer technology, in particular to a method and device for preventing repackaging. Background technique [0002] At present, many malicious application software modify the original installation package through repackaging, embed advertisements in the original installation package, automatically download malicious software, and implement programs such as rooting. [0003] The process of repacking is as follows figure 1 Shown: First, the original installation package is decompiled to obtain the source code of the original installation package, and then the user modifies the source code, for example, adding other codes, which can be advertisements or automatic downloads Malware programs, etc., and finally, the modified file is repackaged to obtain a repackaged installation package. [0004] Since the source code is modified during the above repackaging process, the self-signature of the repackaged insta...

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Problems solved by technology

[0009] In view of the above problems, the present application provides an anti-repackage method and its device, which are used to solve the problem in the prior art that sometimes it is impossible to effectively verify whether the installation package is repackaged by verifying the self-signature of the installation package in the system , and solve the problem in the prior art that when the system checks whether the installation package is repackaged by calculating the hash value of the installation package, sometimes the installation package takes up a large amount of memory, resulting in low verification efficiency

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