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cryptolith
Advanced tools
The Fastest Python Compiler that also makes your code impossible to reverse engineer.
Cryptolith is the high-performance alternative to Nuitka and PyArmor. While others focus only on hiding code, Cryptolith focuses on Speed and Defense-in-Depth.
numpy, pandas, and tensorflow.Workload: Multi-threaded CPU-bound mathematical loop (4 threads, 20M iterations total)
| Engine | Execution Time | Binary Size | Protection |
|---|---|---|---|
| Python (Raw) | 4.59s | < 1 KB | None |
| Nuitka (Standalone) | 2.69s | 18.3 MB | Native |
| PyArmor (Standard) | 7.74s | 0.6 MB | Bytecode |
| Cryptolith (Turbo) | 0.18s | 11.5 MB | Military Grade |
Unlike Nuitka or PyArmor, which are still bound by the Global Interpreter Lock (GIL), Cryptolith's Turbo Mode identifies performance-critical kernels and compiles them to native C with explicit GIL release, achieving a 25.5x speedup on modern architecture.
Standard tools offer Passive Protection (hiding code). Cryptolith offers Active Defense (detecting and misdirecting attackers).
| Feature | PyArmor | Nuitka | Cryptolith |
|---|---|---|---|
| Bytecode Hiding | Strong (VM) | Strong (Native) | Strongest (Native + VM) |
| Logic Obfuscation | Yes (CFF) | Weak/None | Yes (Polymorphic CFF) |
| Performance | Slower (Overhead) | Faster (Native) | 25x Faster (Turbo/No-GIL) |
| Competitive Advantage | Security only | Compilation only | Ultimate IP Performance |
Cryptolith follows an Open Core strategy. We believe free users are our best evangelists.
No watermarks. Build professional, protected tools for small projects and open-source use.
--include and --exclude.Cryptolith eats its own dog food. The compiler you download is protected by itself.
.pyd) is compiled using Cryptolith's own Obfuscation + VM + Turbo pipeline.The ultimate performance and security suite for enterprise-grade IP.
To generate a license for a customer, use the included helper script:
python scripts/admin_keygen.py generate-keys
python scripts/admin_keygen.py create-license --user "Customer Name" --tier "Pro" --private-key "YOUR_PRIVATE_KEY"
To lock to hardware, add --hardware-id "USER_HWID".For full details, see the Licensing Guide.
We have comprehensive, high-quality documentation for both Community and Pro users.
To view the full documentation as a beautiful website with search and detailed guides:
pip install mkdocs-material "mkdocstrings[python]"mkdocs servehttp://127.0.0.1:8000 in your browser.pip install cryptolith
[!NOTE] Requirements: BCC and Turbo modes require a C compiler.
Windows: Install Visual Studio Build Tools.
- Workload: Desktop development with C++
Linux (x86/ARM):
sudo apt install build-essential python3-devmacOS (Intel/ARM):
xcode-select --install
The smartest way to build. Automatically analyzes your code to enable the optimal security and performance settings. Detects deep learning libraries, web frameworks, and sensitive logic.
cryptolith build main.py --auto
Output: [+] Analysis: Torch detected. Enabling Turbo Mode. [+] Analysis: 'auth.py' detected. Enabling VM.
Full control over every optimization layer.
cryptolith build app.py --enable-bcc --enable-turbo --enable-vm --private
If you have a professional license, specify it to unlock Pro features:
cryptolith build main.py --license path/to/license.dat
Cryptolith includes a rigorous automated test runner that validates the entire stack:
cryptolith test
Automated builds and releases are managed via GitHub Actions. To trigger a new release (which builds wheels for Windows, Linux, and macOS and uploads them to GitHub Releases):
The pipeline will automatically:
.tar.gz for source-based installations.Cryptolith is Dual-Licensed:
See LICENSE file for the full End User License Agreement (EULA).
FAQs
Advanced Python source code obfuscator and compiler protection.
We found that cryptolith demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
Did you know?

Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.

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