cryptnox-cli

CLI for managing Cryptnox smart card wallets

cryptnox-cli is a command-line interface for managing Cryptnox Smart cards, enabling secure seed initialization and cryptographic signing for Bitcoin and Ethereum.

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Supported hardware

• Cryptnox Smart cards 💳
• Standard PC/SC Smart card Readers: either USB NFC reader or a USB smart card reader → Readers are also available in the Cryptnox shop.

Get your card and readers here: shop.cryptnox.com

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Installation

Important

This is only a minimal setup. Additional packages may be required depending on your operating system. See Installation and requirements.

From PyPI

pip install cryptnox-cli

From MStore

mstore install cryptnox-cli

Visit the MStore page to install cryptnox-cli via the graphical user interface.

From source

git clone https://github.com/cryptnox/cryptnox-cli.git
cd cryptnox-cli
pip install .

This installs the package and makes the cryptnox command available (if your Python installation is in your system PATH).

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Quick usage examples

Tip

The examples below are only a subset of available commands. The complete list of commands and detailed usage instructions is described in the official documentation.

1. Dual initialization

1. Factory reset each card:
   cryptnox reset → enter PUK → verify reset.

2. Initialize each card:
   cryptnox init → (optional) set name/email → set PIN (4–9 digits) → set or generate PUK → verify init.

3. Run dual seed procedure:
   cryptnox seed dual — follow prompts: insert Card A (enter PIN), swap to Card B (enter PIN), swap back as requested.

2. Sign and send a Bitcoin transaction

1. Create or obtain a raw unsigned transaction externally.
2. Run the signing & send command:
   cryptnox btc send <recipient_address> <amount> [-f <fees>]

3. Change PIN code

1. Run command: cryptnox change_pin
2. Enter current PIN → enter new PIN → verify change.
3. Check with cryptnox info using new PIN (BTC & ETH accounts displayed).

3. Change PIN code

1. Run command: cryptnox change_pin
2. Enter current PIN → enter new PIN → verify change.
3. Check with cryptnox info using new PIN (BTC & ETH accounts displayed).

4. Get extended public key (xpub)

1. Run command: cryptnox get_xpub
2. Enter PIN → enter PUK
3. The card returns the xpub

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Documentation

The full User & Developer documentation is available at the Cryptnox CLI Documentation. It covers installation and setup, usage guides and examples, CLI command reference, and developer notes with API details.

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License

cryptnox-cli is dual-licensed:

• LGPL-3.0 for open-source projects and proprietary projects that comply with LGPL requirements
• Commercial license for projects that require a proprietary license without LGPL obligations (see COMMERCIAL.md for details)

For commercial inquiries, contact: contact@cryptnox.com