BitBox02 Rust and TypeScript library

This repo contains both a BitBox02 client library for Rust and for TypeScript. The latter is produced from the Rust code using Rust WASM.

Rust

See README-rust.md.

TypeScript

The NPM package's README is located at README-npm.md.

The version of NPM package is defined in NPM_VERSION.

To build the TypeScript library, follow these steps:

Install wasm-pack using:

cargo install wasm-pack

If not yet installed, install clang so libsecp256k1 can be cross compiled, e.g. on Ubuntu:

sudo apt-get install clang

Also install the jq tool:

sudo apt-get install jq

The Rust library can be compiled to WASM package including TypeScript definitions using:

make wasm

The output of this compilation will be in ./pkg, which is a NPM package ready to be used.

M1 Macs

The default system clang installation currently cannot build wasm32 targets on M1 Macs. Therefore a new clang compiler and archiver needs to be installed via:

brew install llvm

In order to use that new clang compiler and archiver specify it when runing make wasm:

AR=/opt/homebrew/opt/llvm/bin/llvm-ar CC=/opt/homebrew/opt/llvm/bin/clang make wasm

Sandbox

A demo React project showcasing the TypeScript API. See sandbox.

Command to update the BitBox02 protobuf message files

Normally, Prost protobuf files are generated in build.rs during each compilation. This has a number of downsides:

• The generated .rs file is not committed and depends on the particular version of prost-build that is used, as well as on the system installation of the protoc compiler.
• As a consequence, re-building older version of this library might become tricky if the particular versions of these tools are not easy to install in the future.
• Downstream projects need to install protoc in order to build this library, on dev-machines, in CI scripts, etc.

By pre-generating the file and making it a regular committed source file, these problems fall away.

As a maintainer/developer of this library, to update the protobuf messages, follow these steps:

Clone the BitBox02 firmware repo:

Make sure you have protoc installed:

On Ubuntu:

sudo apt-get install protobuf-compiler

On MacOS:

brew install protobuf

Install rust-script:

cargo install rust-script

Then:

rm -rf messages/*.proto
cp /path/to/bitbox02-firmware/messages/*.proto messages/
rm messages/backup.proto
make build-protos

This will generate/update src/shiftcrypto.bitbox02.rs.