Compile based obfuscation

摘要

Compiler based obfuscation is described. To protect portions of a code project with obfuscations, the code is modified within a compiler to produce one or more modifications that obfuscate the code as part of a compilation process. A compiled version of the code is generated having the modifications that are produced within the compiler. In one approach, the compiler is configured to consume an obfuscation description that indicates portions of the code to protect and specifies the modifications to make to the indicated portions. Various different modifications of code may be performed during the compilation process to implement corresponding obfuscation features. For example, the modifications made within a compiler may include, but are not limited to, modifications designed to enable tamper detection, anti-debugging, and/or encryption of the code.

主权项

1. A method comprising:
modifying code for a development project within a compiler to produce one or more modifications to obfuscate a portion of the code as part of compilation of the code, including: obtaining an obfuscation description having directives that define the modifications, the modifications designed to enable one or more of: heap execution verification, or encryption of the code; and producing the modifications by applying the obfuscation description to intermediate code that combines the code for the development project with code to implement the directives, the obfuscation description configured to designate portions of the code to obfuscate and modifications to make to the one or more portions; and generating by the compiler a compiled version of the code having the modifications produced within the compiler to obfuscate the portion of code.