Cryptnox Card Communication Libraries

Welcome to the Cryptnox Card Communication Libraries documentation. 

This section provides a technical reference for all commands used to interact with cards for hardware wallet functionalities — including secure key derivation, authentication, transaction signing, and address management. Each page focuses on a specific instruction, with clear explanations and usage examples. 

All examples are based on our official open-source Python library: 

 https://github.com/Cryptnox-Software/cryptnoxpy  

In addition to Python, the same hardware wallet functionality is also accessible through libraries in: 

• Rust – ideal for embedded or high-performance applications 
• C++ – for desktop and backend system integrations 

For more information, please check out our public Github repository on :  

https://github.com/Cryptnox-Software 

For mobile platforms, we offer dedicated commercial SDKs for: 

• iOS (Swift) 

• Android (Kotlin) 

These SDKs are designed specifically to integrate the hardware wallet features of Cryptnox cards into mobile apps. 

📩 For more information or to request access to the mobile SDKs, please contact us at: cryptnox.com/contact 

Use this documentation as your starting point to securely integrate hardware wallet capabilities into your applications.