Module concrete_lib::guide::guide_part1_install

Part 1 of the Concrete guide where you set everything up to use Concrete library

Step 1: Install Rust and FFTW

To install rust on Linux or Macos, you can do the following

curl  --tlsv1.2 -sSf https://sh.rustup.rs | sh

If you want other rust installation methods, please refer to rust website

To use Concrete, you also need to install FFTW library.

Macos

The more straightward way to install fftw is to use Homebrew Formulae. To install homebrew, you can do the following

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"

And then install FFTW

brew install fftw

Linux

To install FFTW on a debian-based distribution, you can do :

sudo apt-get update && sudo apt-get install -y libfftw3-dev

From source

If you want to install FFTW from source, you can follow the steps described in FFTW's website

Step 2: Create a new Rust project (if you don't already have one)

To create a new Rust project, you need to have Rust installed so you can run this command:

cargo new play_with_fhe

Step 3: Add Concrete to your dependencies

First thing first, you need to add the Concrete library as a dependency in your Rust project. To do so, simply write concrete_lib = "0.1.0" in the Cargo.toml file.

Here is a simple example:

[package]
name = "play_with_fhe"
version = "0.1.0"
authors = ["FHE Curious"]
edition = "2018"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
concrete_lib = "0.1.0"
itertools = "0.9.0"

We also added itertools because we will use it in the next parts of the guide.

Now, you can compile your project with the cargo build command, which will fetch the Concrete library.

Step 4: Import the main API module

The last thing to do in order to use the Concrete library is to import the pro_api module. We can do that by writing use concrete_lib;

As an example you can use the your empty project from the previous step, here is the file main.rs:

/// file: main.rs
use concrete_lib::*;

fn main() {
    println!("Hello, world!");
}

And now you can compile and run your code with

cargo run

You're all set for the next part!