rust-hwi

NB: This is a temporary fork of https://github.com/bitcoindevkit/rust-hwi. The plan is the full rewrite from scratch not to depend and not to work with the command-line python hwi utility and use libusb directly from rust - with improved data types and error reporting.

Here is the copy of the original README:

Rust wrapper for HWI.

This library internally uses PyO3 to call HWI's functions. It is not a re-implementation of HWI in native Rust.

MSRV

The MSRV for this project is 1.48.0. To build with the MSRV you will need to pin some dependencies:

cargo update -p serde_json --precise 1.0.99
cargo update -p serde --precise 1.0.156
cargo update -p once_cell --precise 1.14.0
cargo update -p quote --precise 1.0.30
cargo update -p proc-macro2 --precise 1.0.65

Prerequisites

Python 3 is required. The libraries and udev rules for each device must also be installed. Some libraries will need to be installed

For Ubuntu/Debian:

sudo apt install libusb-1.0-0-dev libudev-dev python3-dev

For Centos:

sudo yum -y install python3-devel libusbx-devel systemd-devel

For macOS:

brew install libusb

Install

• Clone the repo

git clone https://github.com/bitcoindevkit/rust-hwi.git && cd rust-hwi

• Create a virtualenv:

virtualenv -p python3 venv
source venv/bin/activate

• Install all the dependencies using pip:

pip install -r requirements.txt

Usage

use bitcoin::Network;
use bitcoin::bip32::DerivationPath;
use hwi::error::Error;
use hwi::HWIClient;
use std::str::FromStr;

fn main() -> Result<(), Error> {
    let mut devices = HWIClient::enumerate()?;
    if devices.is_empty() {
        panic!("No devices found!");
    }
    let first_device = devices.remove(0)?;
    let client = HWIClient::get_client(&first_device, true, Network::Bitcoin.into())?;
    let derivation_path = DerivationPath::from_str("m/44'/1'/0'/0/0").unwrap();
    let s = client.sign_message("I love BDK wallet", &derivation_path)?;
    println!("{:?}", s.signature);
    Ok(())
}

Testing

To run the tests, you need to have a hardware wallet plugged in. If you don't have a HW for testing, you can try:

• Coldcard simulator
• Trezor simulator
• Ledger simulator

Don't use a device with funds for testing!

Either use a testing device with no funds, or use a simulator.

You can run the tests with cargo test.