Method for equivalently converting Java code into C++ code

Abstract

The invention relates to the technical field of information security, in particular to a method for equivalently converting a Java code into a C++ code, which comprises the following steps of: recording dex files to be unpacked by an APP as a set B; traversing all classes in the dex file in the set B, obtaining class names, function names and machine codes, and storing and recording the class names, the function names and the machine codes as a set C; converting a Java machine code into a C++ code through a user-defined llvm framework, writing the C++ code into a cpp file, further processing and compiling the cpp to generate a static library file, linking the static library file with a preset basic library file to obtain a dynamic library file F, deleting machine codes of elements in a set C, modifying a function mark, and packaging to obtain a set G; backfilling G and F into the app so as to complete the conversion from the Java code to the C++ code. Compared with the prior art, aiming at the problem that the security strength of traditional APP code protection is not enough, the security strength of the code is improved through a new technical means.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to a method for equivalently converting Java codes into C++ codes. Background technique [0002] With the rapid development of the mobile Internet, mobile terminal APPs have become a necessity in people's lives. The APPs of various industries and companies form a rich mobile life scene, which greatly facilitates people's lives. During the process, a large number of security issues emerged, including the risk of source code leakage, core technology leakage, user fund security, and user personal information leakage. During this process, the country has been improving and formulating industry rules and legal restrictions on mobile Internet In the industry, in the process of regulating and restricting the safety of the industry through policy means, it is essential to have the participation of technical means. [0003] There have been many mobile security APP reinforcement...

AI Technical Summary

Problems solved by technology

[0003] There have been many mobile security APP reinforcement technology solutions on the market to protect the security of mobile APPs. Among them, the confidentiality of APP codes is one of the most basic protection methods. Generally, the codes are encrypted to ensure the confidentiality of the codes. , but in the process of code running, the code needs to be decrypted and restored as a whole. There will be plaintext code in the running memory, and it is easy to be intercepted by malicious people to obtain the overall plaintext code. Later, more advanced code protection methods are derived, which are no longer necessary. Encrypt the code as a whole, start to encrypt the functions in the code separately, and only run to the corresponding function to decrypt and restore. This technical means is a relatively large improvement, and it is impossible for the attacker to obtain the entire code at one time. files, but there is still the problem of code restoration in memory. Through technical means, code fragments of all functions can be obtained, and then combined, most of the function codes can be obtained

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