A code conversion method and device based on an application installation package file

• Main Authors: HUA BAOJIAN, WANG DEJIA, LIU QINGCHUAN, GE QIFENG
• Format: Patent
• Language: Chinese; English
• Published: 09.04.2019
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention discloses a code conversion method and device based on an application installation package file. The method comprises the following steps: decompiling an application installation packagefile to obtain an abstract syntax tree; Processing the content in the node of the abstract syntax tree according to a preset conversion rule to obtain a conversion code corresponding to the to-be-protected code; Encrypting the conversion code according to a preset encryption rule to obtain an encrypted conversion code; Carrying out code replacement processing on the program code corresponding tothe to-be-protected code to obtain a replaced program code; And packaging and generating the application installation package file subjected to code conversion according to the encryption conversion code and the replaced program code. According to the method, the to-be-protected code in the application installation package file is converted into the code which is difficult to decompile, and the code obtained through conver