Blake3

Elixir bindings for the Rust Blake3 implementation. These bindings use :rustler to connect to the hashing functions.

Installation

The package can be installed by adding blake3 to your list of dependencies in mix.exs:

def deps do
  [
    {:blake3, "~> 1.0"}
  ]
end

run mix deps.get and mix deps.compile to pull and build the bindings

Configuration

There are feature options in the rust implementation that allow for additional SIMD instructions and multithreading. They can be set though environment variable or Mix.Config.

export BLAKE3_SIMD_MODE=neon
export BLAKE3_RAYON=true

or

config :blake3,
   simd_mode: :neon,
   rayon: :true

• neon enables ARM NEON support
• rayon enables Rayon-based multithreading

When changing configuration you will need to call mix deps.compile to enable the features.

Example Usage

> Blake3.hash("foobarbaz")
#<<192, 154, 254, 224, 201, 243, 97 ...

> Blake3.new() |> Blake3.update("foo") |> Blake3.update("bar") |> Blake3.update("baz") |> Blake3.finalize()
#<<192, 154, 254, 224, 201, 243, 97 ...

> Blake3.hash("boom") |> Base.encode16(case: :lower)
#"a74bb4d1d4e44d0a2981d131762f45db9a211313d8e9f2cd151b4e673a35a6c1"

Supported Elixir / Erlang / Rust

We follow Rustler itself, supporting latest three minor Elixir versions and major OTP versions. As for Rust itself, we only support stable.

Documentation can found at https://hexdocs.pm/blake3.