Use NIF instead of WASM to gain performances

.github/workflows/release.yml

@@ -0,0 +1,76 @@
+name: Build precompiled NIFs
+
+on:
+  push:
+    branches:
+      - master
+    tags:
+      - "*"
+
+jobs:
+  build_release:
+    name: NIF ${{ matrix.nif }} - ${{ matrix.job.target }} (${{ matrix.job.os }})
+    runs-on: ${{ matrix.job.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        nif: ["2.16"]
+        job:
+          - {
+              target: arm-unknown-linux-gnueabihf,
+              os: ubuntu-20.04,
+              use-cross: true,
+            }
+          - {
+              target: aarch64-unknown-linux-gnu,
+              os: ubuntu-20.04,
+              use-cross: true,
+            }
+          - { target: aarch64-apple-darwin, os: macos-14 }
+          - { target: x86_64-apple-darwin, os: macos-14 }
+          - { target: x86_64-unknown-linux-gnu, os: ubuntu-20.04 }
+          - {
+              target: x86_64-unknown-linux-musl,
+              os: ubuntu-20.04,
+              use-cross: true,
+            }
+
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@v3
+
+      - name: Extract project version
+        shell: bash
+        run: |
+          # Get the project version from mix.exs
+          echo "PROJECT_VERSION=$(grep 'version:' mix.exs | cut -d '"' -f2)" >> $GITHUB_ENV
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          toolchain: stable
+          target: ${{ matrix.job.target }}
+
+      - name: Build the project
+        id: build-crate
+        uses: philss/[email protected]
+        with:
+          project-name: bls
+          project-version: ${{ env.PROJECT_VERSION }}
+          target: ${{ matrix.job.target }}
+          nif-version: ${{ matrix.nif }}
+          use-cross: ${{ matrix.job.use-cross }}
+          project-dir: "native/bls"
+
+      - name: Artifact upload
+        uses: actions/upload-artifact@v3
+        with:
+          name: ${{ steps.build-crate.outputs.file-name }}
+          path: ${{ steps.build-crate.outputs.file-path }}
+
+      - name: Publish archives and packages
+        uses: softprops/action-gh-release@v1
+        with:
+          files: |
+            ${{ steps.build-crate.outputs.file-path }}
+        if: startsWith(github.ref, 'refs/tags/')

.gitignore

@@ -24,3 +24,5 @@ bls_ex-*.tar
 
 # Temporary files, for example, from tests.
 /tmp/
+
+.DS_Store

lib/bls_ex.ex

@@ -1,72 +1,80 @@
 defmodule BlsEx do
   @moduledoc """
-  BlsEx provides utility to leverage BLS signatures through WASM
-  """
-  alias __MODULE__.Keystore
+  BlsEx provides utility to leverage BLS signatures
 
-  @doc """
-  Verifies a single BLS signature
+  BLS scheme supports aggregation of public keys and aggregation of signatures.
 
-  ## Examples
+  Here an full example of aggregated signature verification
 
-      iex> {:ok, pid} = BlsEx.Keystore.start_link(seed: "myseed")
-      iex> {:ok, public_key} = BlsEx.Keystore.get_public_key(pid)
-      iex> {:ok, signature} = BlsEx.Keystore.sign(pid, "hello")
-      iex> BlsEx.verify_signature(public_key, "hello", signature)
-      {:ok, true}
+      iex> seed = :crypto.hash(:sha512, "myseed")
+      iex> public_key1 = BlsEx.get_public_key(seed)
+      iex> signature1 = BlsEx.sign(seed, "hello")
+      iex> seed2 = :crypto.hash(:sha512, "myseed2")
+      iex> public_key2 = BlsEx.get_public_key(seed2)
+      iex> signature2 = BlsEx.sign(seed2, "hello")
+      iex> aggregated_signature = BlsEx.aggregate_signatures([signature1, signature2], [public_key1, public_key2])
+      iex> aggregated_public_key = BlsEx.aggregate_public_keys([public_key1, public_key2])
+      iex> BlsEx.verify_signature(aggregated_public_key, "hello", aggregated_signature)
+      true
   """
-  @spec verify_signature(public_key :: binary(), message :: binary(), signature :: binary()) ::
-          {:ok, boolean()} | {:error, any()}
-  defdelegate verify_signature(public_key, message, signature), to: __MODULE__.StandaloneWasm
 
-  @doc """
-  Aggregate BLS signatures
+  @version Mix.Project.config()[:version]
 
-  ## Examples
+  use RustlerPrecompiled,
+    otp_app: :bls_ex,
+    crate: "bls",
+    base_url: "https://github.com/archethic-foundation/bls_ex/releases/download/v#{@version}",
+    force_build: System.get_env("BLS_EX_BUILD") in ["1", "true"],
+    targets:
+      Enum.uniq(["aarch64-unknown-linux-musl" | RustlerPrecompiled.Config.default_targets()]),
+    version: @version
 
-      iex> {:ok, pid} = BlsEx.Keystore.start_link(seed: "myseed")
-      iex> {:ok, public_key1} = BlsEx.Keystore.get_public_key(pid)
-      iex> {:ok, signature1} = BlsEx.Keystore.sign(pid, "hello")
-      iex> {:ok, pid2} = BlsEx.Keystore.start_link(seed: "myseed2")
-      iex> {:ok, public_key2} = BlsEx.Keystore.get_public_key(pid2)
-      iex> {:ok, signature2} = BlsEx.Keystore.sign(pid2, "hello")
-      iex> BlsEx.aggregate_signatures([signature1, signature2], [public_key1, public_key2])
-  """
-  @spec aggregate_signatures(signatures :: list(binary()), public_keys :: list(binary())) ::
-          {:ok, binary()} | {:error, any()}
-  defdelegate aggregate_signatures(signatures, public_keys), to: __MODULE__.StandaloneWasm
+  @type secret_key :: <<_::512>>
+  @type signature :: <<_::96>>
+  @type public_key :: <<_::48>>
 
   @doc """
-  Aggregate BLS public keys
-
-  ## Examples
+  Generate a public key from a secret key
+  """
+  @spec get_public_key(secret_key :: secret_key()) :: public_key()
+  def get_public_key(secret_key) when is_binary(secret_key) and byte_size(secret_key) == 512,
+    do: :erlang.nif_error(:nif_not_loaded)
 
-      iex> {:ok, pid} = BlsEx.Keystore.start_link(seed: "myseed")
-      iex> {:ok, public_key1} = BlsEx.Keystore.get_public_key(pid)
-      iex> {:ok, pid2} = BlsEx.Keystore.start_link(seed: "myseed2")
-      iex> {:ok, public_key2} = BlsEx.Keystore.get_public_key(pid2)
-      iex> {:ok, _aggregated_public_key} = BlsEx.aggregated_public_keys([public_key1, public_key2])
+  @doc """
+  Sign a message using the given secret key
   """
-  @spec aggregated_public_keys(public_keys :: list(binary())) :: {:ok, binary()} | {:error, any()}
-  defdelegate aggregated_public_keys(public_keys), to: __MODULE__.StandaloneWasm
+  @spec sign(secret_key :: secret_key(), message :: binary()) :: signature()
+  def sign(secret_key, data)
+      when is_binary(secret_key) and byte_size(secret_key) == 512 and is_binary(data),
+      do: :erlang.nif_error(:nif_not_loaded)
 
   @doc """
-  Verifies an aggregated BLS signature
+  Verifies a single BLS signature
+  """
+  @spec verify_signature(
+          public_key :: public_key(),
+          message :: binary(),
+          signature :: signature()
+        ) ::
+          boolean()
+  def verify_signature(public_key, message, signature)
+      when is_binary(public_key) and byte_size(public_key) == 48 and is_binary(message) and
+             is_binary(signature) and byte_size(signature) == 96,
+      do: :erlang.nif_error(:nif_not_loaded)
 
-  ## Examples
+  @doc """
+  Aggregate a list of signatures
+  """
+  @spec aggregate_signatures(list(signature()), list(public_key())) :: signature()
+  def aggregate_signatures(signatures, public_keys)
+      when is_list(signatures) and is_list(public_keys) and
+             length(signatures) == length(public_keys),
+      do: :erlang.nif_error(:nif_not_loaded)
 
-      iex> {:ok, pid} = BlsEx.Keystore.start_link(seed: "myseed")
-      iex> {:ok, public_key1} = BlsEx.Keystore.get_public_key(pid)
-      iex> {:ok, signature1} = BlsEx.Keystore.sign(pid, "hello")
-      iex> {:ok, pid2} = BlsEx.Keystore.start_link(seed: "myseed2")
-      iex> {:ok, public_key2} = BlsEx.Keystore.get_public_key(pid2)
-      iex> {:ok, signature2} = BlsEx.Keystore.sign(pid2, "hello")
-      iex> {:ok, aggregated_signature} = BlsEx.aggregate_signatures([signature1, signature2], [public_key1, public_key2])
-      iex> BlsEx.verify_aggregated_signature( [public_key1, public_key2], "hello", aggregated_signature)
-      {:ok, true}
+  @doc """
+  Aggregate a list of public keys
   """
-  @spec verify_aggregated_signature(list(binary()), binary(), binary()) ::
-          {:ok, boolean()} | {:error, any()}
-  defdelegate verify_aggregated_signature(public_keys, message, signature),
-    to: __MODULE__.StandaloneWasm
+  @spec aggregate_public_keys(list(public_key())) :: public_key()
+  def aggregate_public_keys(public_keys) when is_list(public_keys),
+    do: :erlang.nif_error(:nif_not_loaded)
 end