About

An implementation of the paper "Honey Badger of BFT Protocols" in Rust. This is a modular library of consensus. There are examples illustrating the use of this algorithm.

Requirements

hbbft has optional protobuf support. To use protobuf, enable the feature serialization-protobuf in your Cargo.toml, and make sure you have Google's Protocol Buffer Compiler, protoc binary, located somewhere in your $PATH. You must be using Protocol Buffer Compiler version 3 or greater. Running any of the following install methods will save a protoc binary at /usr/local/bin/protoc.

Note: as of writing this, the latest stable release of protoc is v3.5.1. You can find out what is the latest compiler version is here, if you are not installing protoc on Debian 9 or Ubuntu 17, change your cURL URL and zip file names accordingly.

Installing protoc on Debian 9 (Strech) and Ubuntu 17 (Artful)

$ sudo apt-get update
$ sudo apt-get install -y protobuf-compiler

Installing protoc on other versions of Debian and Ubuntu

$ sudo apt-get update
$ sudo apt-get install -y unzip
$ cd <some temporary working directory>
$ curl -OL https://github.com/google/protobuf/releases/download/v3.5.1/protoc-3.5.1-linux-x86_64.zip
$ sudo unzip protoc-3.5.1-linux-x86_64.zip -d /usr/local bin/protoc
$ sudo chown $(whoami) /usr/local/bin/protoc
$ rm protoc-3.5.1-linux-x86_64.zip

Installing protoc on OSX

$ cd <some temporary working directory>
$ curl -OL https://github.com/google/protobuf/releases/download/v3.5.1/protoc-3.5.1-osx-x86_64.zip
$ sudo unzip protoc-3.5.1-osx-x86_64.zip -d /usr/local bin/protoc
$ rm protoc-3.5.1-osx-x86_64.zip

Building

Once you have verified that the protoc binary is in your $PATH, you can build hbbft using cargo:

$ cargo build [--release]