Android platform executable program encrypting method
A technology for executing programs and encryption methods, applied in the direction of program/content distribution protection, computer security devices, instruments, etc., can solve problems such as damaging the interests of application program developers, and achieve the effect of protecting interests and preventing decompilation
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[0027] The traditional Java virtual machine can implement class encryption through the defineClass method of ClassLoader. defineClass can convert a piece of data in the memory into a virtual machine class, but the Android virtual machine does not provide this method. In addition, since the Android virtual machine introduces a stage called dexopt, the dex file must be converted into an odex file through this program. The odex is generated when running or installing the apk, and stored on the disk. Due to the limitations of the Android virtual machine itself, normal methods cannot implement class encryption.
[0028] Such as image 3 As shown, the present invention adopts the method of replacing the API to realize the encryption of the APK. Since the Android Dalvik virtual machine and the APK run in the same process space, the key API of the Dalvik VM can be replaced to realize the runtime decryption of the APK.
[0029]Replacement API refers to the function of replacing the s...
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