Cryptnox Docs

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Introduction To Cryptnox

We1 are an aspiring leader in the secure hardware solutions for digital asset management and authentication. Combining cutting-edge smart card technology with user-friendly design, and an app-enabled software control, Cryptnox provides a robust foundation for protecting your business and customers an increasingly interconnected world. We are dedicated to safeguarding your digital presence. If you are a blockchain enthusiast looking for secure authentication solutions, Cryptnox delivers advanced tools to ensure your data remains protected. With our emphasis on security, simplicity, and user friendliness, we aim to empower you to take full control of your digital finance life.

Our solutions are designed for interoperability, allowing easy integration with existing blockchain platforms and authentication systems. Whether you’re accessing decentralized finance applications or securing your online accounts, Cryptnox ensures a smooth and secure experience.

We have a range of products to facilitate this unparalleled experience:

  • Hardware wallet
  • FIDO2 Card
  • Specialized business solutions

Go to the Cryptnox Products section for more information on each product.

Hardware Wallet

Overview

The hardware wallet is a solution based on the latest smartcard technology compatible with the BIP32 and BIP39 standards. We enable you with an intuitive mobile application with a streamlined initialization and backup process to prioritize the safeguarding of your digital assets in simplest possible manner. Our hardware wallets are perfect for both beginners and advanced users. The hardware wallets can integrate with popular platforms like MetaMask and WalletConnect, providing secure access to DeFi, NFTs, and more.

Features

The following are some technical features of Cryptnox hardware wallet:

  1. Standards: Cryptnox hardware wallets are compatible with the BIP32 and BIP39 standards.
  2. Privacy: Cryptnox cards store the key pairs inside the secure element ensuring your privacy.
  3. Backup: You can back up your keys with the backup card and the dual card initialisation process.
  4. Cross compatibility: You can connect your Cryptnox hardware wallet to other wallets like MetaMask, or Web3 platforms like WalletConnect for greater functionality.
  5. Manual token setup: You can manually add blockchain networks and tokens to your mobile application as long as they are EVM compatible.
  6. Recovery: You can recover the lost or forgotten key using PIN and PUK.

What do you get?

With the hardware wallet solution, you get the access to the following set of products from Cryptnox:

  1. Physical cards (hardware wallet): You get two cards- a primary card and a backup card for you to use. We exclusively provide a backup card in case you lose the primary card or face any technical difficulties while performing a transaction.

  2. Mobile application: You can keep track of your financial portfolio and manage your spend using the Cryptnox mobile app, specially designed to simplify your experience. Using this application in parallel to the card and biometric authentication, you can quickly sign transactions, securely transfer valuable cryptocurrencies, or store the cryptocurrencies. You can also use this application to check the balances in your crypto portfolio but you will need a card to perform transactions.

Additional support information

The following section outlines some of the important things that might be of your interest with regard to this solution.

Legal Compliances

Cryptnox is compliant with the data protection laws and does not have any visibility on or access to your wallet. A wallet is always created by the owner and Cryptnox has no way to access it. We follow highest level of security standards and we were audited by the Cybersecurity firm Cure53 after we appointed them to perform a security analysis of the Cryptnox card firmware. For more information on Cure53, visit the Cure53 website.

Software Standards

The hardware wallet, in combination with the app, is compatible with BIP 32 and BIP 39 standards. As a result, if your seed originates from a BIP32/BIP39 wallet, you can inject it in a Cryptnox Hardware Wallet card. You can inject a seed as a part of the initialization process. This process is outlined further in the documentation.

Best Practices

Using defi and other web3 applications using Cryptnox card.

The mobile application is compatible with the WalletConnect, which allows you to connect to most of the online web3 dapps. To do so, select ‘WalletConnect’ as a wallet option, scan the QR code with your phone app, and follow the instructions on the screen to connect your wallet. You can then perform defi transactions and even mint or transfer NFTs.

Resetting the card in case of lost PIN/PUK credentials.

As a standard practice,

  • Store your PIN and PUK together either with your backup card (if you performed a dual card Setup).
  • Or store a copy of your BIP39 (12 or 24 words) seed if it was externally injected.

This a major security requirement. For additional protection, the PUK is required for reset.

The PIN and the PUK work in a similar way for accessing a phone sim card. The PIN and the PUK work in the following manner:

  • The PIN is generally required for executing a transaction on other Cryptnox card-compatible applications.
  • The PUK has administrative privileges, and is required for pairing your card with the biometrics of your phone, or for a reset.

Performing a dual card setup with any pair of Cryptnox wallet card.

You can only perform a dual card setup with a pair or cards that was provided in the same pack. The printed serial numbers on the cards should vary by one unit.

Accessible blockchain networks.

The Cryptnox hardware wallet cards are compatible with Bitcoin and Ethereum virtual machine (EVM) based blockchains. You can also manually add an EVM based network or coin that is not listed in the Cryptnox wallet application.
  • Updated 6 months ago
Cryptnox Products
Hardware Wallet
  • Updated 6 months ago

What’s Next

Cryptnox Products

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. 

Product Documentation

Admin Commands

Signature Commands

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