Protecting python sources with cython There are other languages like Java/C++/C# for those things where all kinds of obfuscators and protectors are available in those ecosystems. The following methods exist to protect Python applications using Sentinel LDK: 1. Feb 3, 2025 · Therefore, protecting your code helps prevent such security threats. I did some research and provide a commonly Aug 25, 2023 · In this blog post, we will delve deeper into the world of Cython, exploring what it is, how to migrate your existing Python project to use Cython, the benefits and drawbacks of using Cython, and most importantly, how you can use Cython to protect your Python code from being read by users. 3. however, I would like to make other not important technique file open source. Next Explaining PCIe Slots Jan 19, 2025 · Principle Convert Python code into another format that is more difficult to understand or reverse-engineer. RAID Technology (Data Storage Virtualization) RAID (Redundant Array of Independent Disks, originally Redundant Array of Inexpensive Disks) is a data storage virtualization Protecting Python Applications. some Python files include very import technique, so I want to make those import technique files be close source. Software Protection (DRM) Solutions. The method is simple: write a setup. py build_ext --inplace and wait. Resulting extensions still can be reverse-engineered, but not reversed to equivalent source code (like from byte-code). I also don't think it is not a problem as Mar 12, 2019 · Cython unable to import and execute a function: Storing unsafe C derivative of temporary Python reference 2 Enhance the protection of my Python source code •Protect source from being read •Enforce usage restrictions •Protect from modification (e. I also had no interest in making them to think differently at that point of time. It can't. The . 0. Sloth image from IndiaToday | Cheetah image from Pixabay. Python is an interpreted language, it doesn't really have a compiled form at all, only a high-level bytecode that's not half as obscure as actually-compiled binaries. Topics. Python Source Code Obfuscators. Cause it’s interpreted ; with a small modification of python source code you could extract all the code (even if it’s obfuscated). --- If you have questions or are new to Python use r/LearnPython Perhaps the most reliable way of concealing source code is not to distribute your programs at all. c. During this article, I’ll write down the steps I’ve followed while trying to find a fit solution to the problem of protecting a Python based codebase. Used by clients worldwide, it is the most cost effective solution to help secure your Intellectual Property. g Companies such as Google apparently use Python and yet have no difficulty in concealing their source code from outsiders. 31 numpy: 1. Generally speaking, you can use it to convert your pure-python source code into compiled extension modules. Aug 25, 2023 · In this blog post, we will delve deeper into the world of Cython, exploring what it is, how to migrate your existing Python project to use Cython, the benefits and drawbacks of using Cython, and most importantly, how you can use Cython to protect your Python code from being read by users. Aug 31, 2017 · Protecting your Python sources from unwanted readers is easier said than done, because . Anyway the last thing I tried was using Cython to compile the libraries I made and compile also the main source code as a library too. Personally I support open source and never tried to do that. 04 / # Any linux os should work Python: 3. (as a . Aug 12, 2020 · As you know, it’s a bit hard to protect python code. It's a pretty weak protection, and is entirely accidental rather than by design. As an interpreted language, the source code must be available in some form in order to execute it. so libraries by parts. I did some research and provide a commonly Mar 20, 2025 · Protecting a Python application with Cython and Sentinel LDK Envelope consists of the following steps: 1. Ultimately, if someone gets access to the code, they can use it. If you’re not aware of what Cython is, it basically allows you to write Python code, convert Mar 31, 2021 · It probably is (there are python packages out there that come with cython'ed extensions, and they can be made work with pyinstaller), but you'll need to watch out for two things: entry-point script still needs to be a . Jan 13, 2017 · Eventually I quit my job after a year tired of fighting to convince them Python is not Java. -i, --inplace Whether compile python files in place. Here’s an overview of popular techniques to protect Python source code: 1. The second thing is that any "protection" you do get is when the . 1不兼容造成的。 Jul 19, 2023 · How to Protect Python Source Code. Examples. Script Envelope is an advanced command-line tool for applying Sentinel LDK Envelope protection to Python applications. Other way to protect is encrypt source files: This method based customization of the Python import mechanism described in PEP 302. python. Share: Previous NANO Antivirus Free – NANO Security Ltd. 0版本下编译的PyYAML<6. pyx: print(1/0) # division error! Then let's use Cython: This produces a test. 1. Mar 6, 2025 · With Cython you compile your Python code to C binaries and make it also difficult enough to reverse engineer. PyInstaller does not, and cannot, protect your source code from being viewed or decompiled. g. Prerequisites. Diligently using search engines reveals that at least three obfuscators exist which accept Python source code as input, and produce transformed code which is harder to understand Dec 24, 2021 · The Code is often obfuscated to protect intellectual property or trade secrets, Let me walk you through steps towards Python source code obfuscation using Cython. I have tried Cython to convert my python file to pyd file or so file on Linux. py Protecting Python Sources With Cython. Script Envelope is an advanced command-line tool for applying Sentinel LDK Envelope protection to Python applications on a Linux or Windows machine. First, introduce training and second add the automatic code scanners. Although it does not protect from reverse-engineering, it does make it a lot harder, and prevents someone from obtaining the exact original sources of your code. The obfuscation process renames variables, functions, and classes to non-descriptive names. medium. exe executable, nice! Dec 12, 2019 · One of my friend came to ask how to hide their source code, in Python, from the users. Freeze code using libraries like PyInstaller(can encrypt bytecode to),CxFreeze,Py2exe,pynsist,Nuitka,Cython. Cython enables the writing of Python code that can be compiled to C code for . Using windows; Cython Protecting Python Sources With Cython; About. Jul 31, 2017 · Recently, I worked on a Python project that required the whole codebase to be protected using Cython. Jun 17, 2021 · I create many python files. I did some research and provide a commonly Dự án bảo vệ mã nguồn Python dành cho người Việt - Made by MHP0920 with 💖 - MHP0920/python-protection-project Feb 10, 2025 · Download Cython for free. Protecting Python Applications. pyc文件存在问题-它们与使用其创建的python版本不兼容，与任何其他python版本都不兼容，这意味着您必须知道要在其上运行该产品的系统上正在运行哪个python版本。 Oct 16, 2023 · 重要安全免责声明**：我强烈反对任何人将PyYAML降级到5. exe file) To protect the my code, various searches on the Interne Apr 12, 2022 · The three main options for Python source protection are code obfuscation, modifying the interpreter, and compiling to binary; the other methods are basically ineffective. Protecting Python and Flask App Sources With Cython - compile. py file to . Securing Python code requires a combination of best practices, tools, and strategies to safeguard it against unauthorized access, reverse engineering, and tampering. We’ll use a Simple project Nov 25, 2019 · One of the possible solutions to protect the source code of a python application is to use Cython. The most widely used Python to C compiler. 3. The source files can be decrypted only with a key. Then with a twoliner python code I executed the main function from the imported C code. Aug 18, 2015 · As mgilson mentioned in the comments, Cython is probably your best bet here. It makes writing C extensions for Python as easy as Python itself. c file is compiled to a . But no matter how much your client reads through the code The official Python community for Reddit! Stay up to date with the latest news, packages, and meta information relating to the Python programming language. Two workarounds exist:. TLDR; Because of the open source nature of the Python, there are no viable tools available to obfuscate or encrypt your code. Cython translates source code into C/C++ code and compiles it. There is no impact on the performance of your running application as the decryption process takes place during the import of your module. Obfuscate Code Jan 5, 2021 · A better option is to wrap it using Cython which is a C extension of Python. Steps to Protect the Python Code. It took me a while to I understand that you want your customers to use the power of python but do not want expose the source code. The procedure works only when cython accept source code in memory. pyd/. Script Envelope. 2) Pick up the key and immediately delete the text file upon running Python As you know, it’s a bit hard to protect python code. use Cython to encapsulate my source code in a compiled C program 3. The following methods exist to protect Python applications using Sentinel LDK on a Windows or Linux machine: 1. I want to protect my source code of the pyd. The problem with distributing compiled extensions is that they are platform-specific. 29. Cython is a different language from Python but its syntax is similar to Python with additional static type declarations like C. Feb 20, 2014 · Here's what I would do: 1) Create a C script which produces a key and stores it to a text file. 5. Using Cython to compile and protect Odoo source code. Mar 26, 2017 · Why not encrypt all your python code as plain text files. pyd using Cython, but the problem is in the space where I'm willing to sell the code (forex trading algorithm), a lot of people make living off decompiling source codes ( with extensive Aug 16, 2023 · It helps protect and obfuscate Python scripts and packages. al/25cXVn--Track title: CC O Beethoven - Piano Sonata No 3 in C--Chapters00:00 Jan 12, 2022 · It's definitely a regression between Cython 3. c file itself will be very easy to read and work out what your code does. And for the record, tools that “compile” Python code tend not to do any sort of obfuscation (their main purpose is not to hide code, it’s to make a single-file runtime). "Protecting the source", just like any security thing, only makes sense with a defined threat model: who are you Python is an open source language and was created with open source ethos to begin with. My client wants me to install/deploy the server components on his local server managed by his IT guy and not cloud! I am wary of doing that as i understand it is “reasonably easy” to reverse engineer the python code. This PR (included in a10) swapped out the base class on Cython's custom build_ext distutils command (which pyyaml further subclasses to customize some stuff). This is especially true of Python source code, which often sits unencrypted on staging servers. Dec 1, 2023 · The relationship between Cython and Python is close, with Cython built on top of Python to extend its capabilities. pyx files in the given path to C extensions. py file first. We will use wheel as a Oct 4, 2023 · Hi, I have developed an application for commercial using Python code and libs. . While the primary intent of Cython is for enhanced performance, there shouldn't be any barriers for using it for source-code protection. The safest of these three options is to compile py files with Cython (but you need to be careful about compatibility). Knowing that this is a losing battle, and that I suspected that it was more about limiting curiosity rather than deliberate reverse engineering, I decided to investigate the use of cython to compile python via C into a binary. Nov 25, 2019 · One of the possible solutions to protect the source code of a python application is to use Cython. use Pyminifier to improve the software size and at the same time obfuscate the source code. This is the wrong language for someone coming from that kind of mindset. so/. I am really concerned about losing my IP! Questions: a) is reverse engineering possible by the Mar 27, 2024 · I was looking for a method to distribute some proprietary code to 3rd parties with some level of IP protection. python cython python3 odoo protect-python-source Source: Protecting Python Sources With Cython – Vitaly Gordon – Medium. It transforms the original Python code into a form that is harder to understand while maintaining its functionality. Using windows; Cython Nov 15, 2023 · Edit: Adding the work arounds which worked for people. However, I have never programmed in C, and I want to know if there are better ways to compile my source Python code, without the need to learn C. 2. 0 alpha has been able to build the pyyaml extension fine. py <-- python source code │ ├── main. 7 cython: 0. Write a layer between the client and the source code that does the decryption using the key. At best it can obfuscate it. The client code loads the libraries dynamically using the encryption layer. 0a10 #601 (comment) Oct 4, 2023 · a) Yes b) Not really worth the hassle c) No. Companies such as Google use a lot Python and have no difficulty in concealing their source code from outsiders. , to deactivate license checks) •Protect from reverse engineering and tampering •Keep it simple, stupid •Compile, Obfuscate, Encrypt •Implement license rules and checks •Sign scripts (and enforce signatures) •Implement run-time checks May 16, 2020 · After some research on how I can protect my python source code on similar topics here and other sites, most agree that I should convert my . apply a license (I thought to write an EULA license) Aug 25, 2023 · In this blog post, we will delve deeper into the world of Cython, exploring what it is, how to migrate your existing Python project to use Cython, the benefits and drawbacks of using Cython, and most importantly, how you can use Cython to protect your Python code from being read by users. SOURCEdefender can protect your plaintext Python source code with AES 256-bit Dec 20, 2024 · I am generating customized pyd with cython in a server. These are your Python files, now compiled. This will output some C and PYD files. Compilation is required 1. It also removes comments and restructures the code. Become part of the top 3% of the developers by applying to Toptal https://topt. This layer can be conveniently compiled once using cython. Jun 16, 2020 · It is indeed a popular opinion that using Cython is a way to protect a Python source code, see for example the article Protecting Python Sources With Cython. Here are my suggestions: (a) Write the critical pieces of the code as C or C++ libraries and then use SIP or swig to expose the C/C++ APIs to Python namespace. Python is just inherently a bad choice if you want to avoid people investigating your source code - 'compiled' python isn't all that hard to read relatively speaking. BGCython is a Cython implementation for BGE, building extensions automatically at GE start whenever the source files are modified. And the only way it can do so is by only shipping pyc files (readily decompiled) that optionally may have been encrypted (which only works if the encryption key is inside the bundle and easily readable, so trivially decrypted). Dec 26, 2022 · 2 stories · Cython. It only needs a single line of code to compile all of your . Best Practices for Protecting Python Source Code As Python is an interpreted language by design; and as it compiles code to a bytecode (- which doesn't help the fact you're trying to conceal it, as bytecodes are easier to reverse -) there's no real secure way to hide your source code whereby it is not recoverable, as is true for any programming language, really. Nov 30, 2019 · Using Cython library to create a C-wrapper for my program, making it compiled in C instead of Python. This is true no matter how much you obfuscate it. May 17, 2019 · 小埋酱最近几乎都在折腾AI相关的事情，而AI相关开发的首选肯定是Python。无论是第三方库的丰富程度，还是开发的速度都是其他语言难以比拟的。 随着算法库的不断完善，必定会带来一个问题，就是以后私有化部署的时… Sep 13, 2024 · These prerequisites, will help be ready to start optimizing Python code using Cython. 19. Options: -l, --layer <int> Level of protection: 1 - compileall; 2 - cython. 2 git Sample Code We will have a tiny python project which will just do addition, multiplication, square Apr 10, 2022 · The first thing to realize is that Cython isn't designed to "protect" Python sources. so file) Jul 25, 2021 · Protecting Python Sources With Cython 回答 9 运送. Unlike pyc/bytecode, the pyd files are binaries that do not contain the original python source. What Are Some Python Code Protection Techniques. Since C binaries are much harder to read, it will make the program significantly harder to decompile. pyd file. (b) Use cython instead of Python Feb 4, 2022 · Throughout this article, I’ll detail the compiling modules with Cython method/solution to the challenge of protecting a Python-based codebase. Are there ways to protect Python code? Compile using CPython · Option 2: Wrap with Cython · Conclusion · Reference Python is one of the most popular Feb 24, 2016 · @Torxed this is indeed not the same question, pyd files are produced by Cython. Protect the resulting Python native extension modules using Jan 23, 2024 · Licensing a Python library/module to other companies; Fortunately, developers can utilize obfuscation, encryption, bindings, license keys, and other tricks make it harder for attackers to misuse Python code. py <-- script for testing *app Jul 31, 2017 · Recently, I worked on a Python project that required the whole codebase to be protected using Cython. py file (although it only needs to call an entry-point function from you . 1，因为5. root project directory ├── app <-- application folder │ ├── includes <-- include folder (an example folder that you want to copy to wheel) │ ├── core. The best way to protect Python source code is to implement a twofold program. Cython is an optimizing static compiler for both the Python programming language and the extended Cython programming language (based on Pyrex). 1 documentation Jun 7, 2021 · Now, open a command prompt window in the same folder and run this command python setup. VMProtect A commercial software protection tool that can obfuscate and protect Python applications. FILES_OR_DIRS can be python files, wheel packages,source packages or dirs contain python files. Feb 21, 2023 · I have developed a program with Python language and I want to finally provide this program as an executable file for Windows. pyc bytecode is decompileable and the obfuscation is easily reverse-engineered. Cython is a static compiler for Python and Cython programming languages, it simplifies the job of writing Python C extensions. The method I will explain here is really solid and use a third-party tool named “The Enigma Protector”. Preinstall cython<3, then install pyyaml without build isolation, then install the rest of your dependencies "AttributeError: cython_sources" with Cython 3. 0a9 and a10; every previous 3. Those methods are give a good protection, but any changes in source files is requred re-compile for all target platforms. Project may compiled to binary file or . The intended purpose of Cython is to leverage the performance gain that C provides, but you can also use it to compile your Python code to C Goldenmask is a tool to protect your python source code easily. Compile the resulting C files into native Python extension modules (PYD/SO) using your platform’s C compiler. Themida Another commercial solution that offers advanced protection features. The sections covered in this tutorial are as follows: Python, CPython, and Cython; Cythonizing Simple Python Code; Cythonizing a for Loop; Assigning C Data Types to the Variables; Using Cython in Sep 25, 2021 · In response to the following question: "How can I truly "protect" the python source code we create for a commercial… wiki. SOURCEdefender is the easiest way to obfuscate Python code using AES-256 encryption. Here are some effective steps to protect your Python code: Step 1. org PyInstaller Manual - PyInstaller 4. Use Code Oct 1, 2020 · Platform: Ubuntu 20. Although protecting Python sources from reverse engineering seems like a futile task at first, cythonizing all the code leads to a reasonable amount of security (the binary is very difficult to disassemble, but … Nov 16, 2018 · BGCython See BGCython on GitHub WARNING: Tested only on Windows. Translate your Python (PY) modules into C code using Cython. Although protecting Python sources from reverse engineering seems like a futile task at first, cythonizing all the code leads to a reasonable amount of security (the binary is very difficult to disassemble, but it's still possible to e. py <-- python source code │ └── __init__. – Use Cython to get more than 30X speedup on your Python code; Protecting Python Sources With Cython; Distributing python packages protected with Cython; Docker multi-stage builds; Don’t leak your Docker image’s build secrets Nov 15, 2024 · CSDN问答为您找到python现成代码配置问题报错cython_sources相关问题答案，如果想了解更多关于python现成代码配置问题报错cython_sources python 技术问题等相关问答，请访问CSDN问答。 The very nature of Python makes the task of protecting the source code complicated. 4之前的版本都有a known CVE — CVE-2020-14343。; 此问题是由于在July 17, 2023上发布的Cython>=3. Let's take this simple example test. py <-- package mandatory file ├── example2. Thus I would prefer to encrypt the source code and then when I need generate the customized pyd, I can decrypt it and use cython to generate the customized pyd. Features To my surprise this never worked because of the urllib3 libraries. Let's compile it: It works! It produces a 140KB test. wqvdio lxysnynl esznstfg vzms rbvxa eccbvg htitcfr qme jusb luhi zyuqgg vzmqb cqlbhq civmhl ocrlu