diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
new file mode 100644
index 0000000..377eab9
--- /dev/null
+++ b/.github/workflows/CI.yml
@@ -0,0 +1,208 @@
+# This file is autogenerated by maturin v1.7.4
+# To update, run
+#
+#    maturin generate-ci github
+#
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - '*'
+  pull_request:
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    name: Run Unit Tests
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.12'
+      - name: Build wheel
+        uses: PyO3/maturin-action@v1
+        with:
+          command: build
+          args: -o dist -i python3.12
+      - name: Install wheel
+        run: |
+          pip install dist/*.whl
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt
+      - name: Run tests
+        run: |
+          pip install pytest
+          pytest tests.py
+  linux:
+    runs-on: ${{ matrix.platform.runner }}
+    needs: test
+    strategy:
+      matrix:
+        platform:
+          - runner: ubuntu-latest
+            target: x86_64
+          - runner: ubuntu-latest
+            target: x86
+          - runner: ubuntu-latest
+            target: aarch64
+          - runner: ubuntu-latest
+            target: armv7
+          - runner: ubuntu-latest
+            target: ppc64le
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: 3.x
+      - name: Build wheels
+        uses: PyO3/maturin-action@v1
+        with:
+          target: ${{ matrix.platform.target }}
+          args: --release --out dist --find-interpreter
+          sccache: 'true'
+          manylinux: auto
+      - name: Upload wheels
+        uses: actions/upload-artifact@v4
+        with:
+          name: wheels-linux-${{ matrix.platform.target }}
+          path: dist
+
+  musllinux:
+    runs-on: ${{ matrix.platform.runner }}
+    needs: test
+    strategy:
+      matrix:
+        platform:
+          - runner: ubuntu-latest
+            target: x86_64
+          - runner: ubuntu-latest
+            target: x86
+          - runner: ubuntu-latest
+            target: aarch64
+          - runner: ubuntu-latest
+            target: armv7
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: 3.x
+      - name: Build wheels
+        uses: PyO3/maturin-action@v1
+        with:
+          target: ${{ matrix.platform.target }}
+          args: --release --out dist --find-interpreter
+          sccache: 'true'
+          manylinux: musllinux_1_2
+      - name: Upload wheels
+        uses: actions/upload-artifact@v4
+        with:
+          name: wheels-musllinux-${{ matrix.platform.target }}
+          path: dist
+
+  windows:
+    runs-on: ${{ matrix.platform.runner }}
+    needs: test
+    strategy:
+      matrix:
+        platform:
+          - runner: windows-latest
+            target: x64
+          - runner: windows-latest
+            target: x86
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: 3.x
+          architecture: ${{ matrix.platform.target }}
+      - name: Build wheels
+        uses: PyO3/maturin-action@v1
+        with:
+          target: ${{ matrix.platform.target }}
+          args: --release --out dist --find-interpreter
+          sccache: 'true'
+      - name: Upload wheels
+        uses: actions/upload-artifact@v4
+        with:
+          name: wheels-windows-${{ matrix.platform.target }}
+          path: dist
+
+  macos:
+    runs-on: ${{ matrix.platform.runner }}
+    needs: test
+    strategy:
+      matrix:
+        platform:
+          - runner: macos-14
+            target: x86_64
+          - runner: macos-14
+            target: aarch64
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: 3.x
+      - name: Build wheels
+        uses: PyO3/maturin-action@v1
+        with:
+          target: ${{ matrix.platform.target }}
+          args: --release --out dist --find-interpreter
+          sccache: 'true'
+      - name: Upload wheels
+        uses: actions/upload-artifact@v4
+        with:
+          name: wheels-macos-${{ matrix.platform.target }}
+          path: dist
+
+  sdist:
+    runs-on: ubuntu-latest
+    needs: test
+    steps:
+      - uses: actions/checkout@v4
+      - name: Build sdist
+        uses: PyO3/maturin-action@v1
+        with:
+          command: sdist
+          args: --out dist
+      - name: Upload sdist
+        uses: actions/upload-artifact@v4
+        with:
+          name: wheels-sdist
+          path: dist
+
+  release:
+    name: Release
+    runs-on: ubuntu-latest
+    if: ${{ startsWith(github.ref, 'refs/tags/') || github.event_name == 'workflow_dispatch' }}
+    needs: [linux, musllinux, windows, macos, sdist]
+    permissions:
+      # Use to sign the release artifacts
+      id-token: write
+      # Used to upload release artifacts
+      contents: write
+      # Used to generate artifact attestation
+      attestations: write
+    steps:
+      - uses: actions/download-artifact@v4
+      - name: Generate artifact attestation
+        uses: actions/attest-build-provenance@v1
+        with:
+          subject-path: 'wheels-*/*'
+      - name: Publish to PyPI
+        if: "startsWith(github.ref, 'refs/tags/')"
+        uses: PyO3/maturin-action@v1
+        env:
+          MATURIN_PYPI_TOKEN: ${{ secrets.PYPI_API_TOKEN }}
+        with:
+          command: upload
+          args: --non-interactive --skip-existing wheels-*/*
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
deleted file mode 100644
index 5f0f2fb..0000000
--- a/.github/workflows/build.yml
+++ /dev/null
@@ -1,181 +0,0 @@
-name: Build wheels
-
-on:
-  push:
-    branches:
-      - main
-
-jobs:
-  macos:
-    runs-on: macos-latest
-    strategy:
-      matrix:
-        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12']
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
-        with:
-          python-version: ${{ matrix.python-version }}
-      - name: Install Rust toolchain
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: nightly-2024-02-04
-          target: aarch64-apple-darwin
-          profile: minimal
-          default: true
-      - name: Build wheels - universal2
-        if: ${{ matrix.python-version != '3.7' }}
-        uses: messense/maturin-action@v1
-        with:
-          args: -i python --release --universal2 --out dist
-          rust-toolchain: nightly-2024-02-04
-      - name: Install built wheel - universal2
-        if: ${{ matrix.python-version != '3.7' }}
-        run: |
-          pip install py-ed25519-zebra-bindings --no-index --find-links dist --force-reinstall
-      - name: Upload wheels
-        uses: actions/upload-artifact@v4
-        with:
-          name: dist-wheels-mac-${{ matrix.python-version }}
-          path: dist/*.whl
-  windows:
-    runs-on: windows-latest
-    strategy:
-      matrix:
-        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12']
-        target: [x64, x86]
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
-        with:
-          python-version: ${{ matrix.python-version }}
-          architecture: ${{ matrix.target }}
-      - name: Update rustup
-        run: rustup self update
-      - name: Install Rust toolchain
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: nightly-2024-02-04
-          profile: minimal
-          default: true
-      - name: Build
-        if: matrix.target == 'x64'
-        run: cargo build --release
-      - name: Build wheels
-        uses: messense/maturin-action@v1
-        with:
-          target: ${{ matrix.target }}
-          args: -i python --release --out dist
-          rust-toolchain: nightly-2024-02-04
-      - name: Install built wheel
-        run: |
-          pip install py-ed25519-zebra-bindings --no-index --find-links dist --force-reinstall
-      - name: Upload wheels
-        uses: actions/upload-artifact@v4
-        with:
-          name: dist-wheels-win-${{ matrix.target }}-${{ matrix.python-version }}
-          path: dist/*.whl
-
-  linux:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12']
-        target: [x86_64, i686]
-    steps:
-      - uses: actions/checkout@v4
-      - name: Install Rust toolchain
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: nightly-2024-02-04
-          profile: minimal
-          default: true
-      - name: Build
-        run: cargo build --release
-      - uses: actions/setup-python@v5
-        with:
-          python-version: ${{ matrix.python-version }}
-      - name: Build Wheels
-        uses: messense/maturin-action@v1
-        with:
-          target: ${{ matrix.target }}
-          rust-toolchain: nightly-2024-02-04
-          manylinux: auto
-          args: -i python${{ matrix.python-version }} --release --out dist
-      - name: Upload wheels
-        uses: actions/upload-artifact@v4
-        with:
-          name: dist-wheels-linux-${{ matrix.target }}-${{ matrix.python-version }}
-          path: dist/*.whl
-
-  muslwheels_x86:
-    name: Build musllinux wheels for x86
-    runs-on: ubuntu-latest
-
-    env:
-      CIBW_BUILD_VERBOSITY: 1
-      CIBW_BEFORE_ALL_LINUX: "curl https://sh.rustup.rs -sSf | sh -s -- --default-toolchain nightly-2024-02-04 -y"
-      CIBW_ARCHS_LINUX: "auto64"
-      CIBW_ENVIRONMENT: 'PATH="$PATH:$HOME/.cargo/bin"'
-      CIBW_BUILD: "*-musllinux_x86_64"
-      CIBW_SKIP: "cp27-* cp34-* cp35-* cp36-*"
-
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Build wheels
-        uses: pypa/cibuildwheel@v2.17.0
-        with:
-          output-dir: dist
-
-      - name: Upload wheels
-        uses: actions/upload-artifact@v4
-        with:
-          name: dist-wheels-musl
-          path: dist/*.whl
-
-  aarch64_wheels:
-    name: Build wheels for aarch64 linux
-    runs-on: ubuntu-latest
-
-    env:
-      CIBW_BUILD_VERBOSITY: 1
-      CIBW_BEFORE_ALL_LINUX: "curl https://sh.rustup.rs -sSf | sh -s -- --default-toolchain nightly-2024-02-04 -y"
-      CIBW_ARCHS_LINUX: "aarch64"
-      CIBW_ENVIRONMENT: 'PATH="$PATH:$HOME/.cargo/bin"'
-      CIBW_BUILD: "*-musllinux_aarch64 *-manylinux_aarch64"
-      CIBW_SKIP: "cp27-* cp34-* cp35-* cp36-*"
-
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v3
-        with:
-          platforms: arm64
-
-      - name: Build wheels
-        uses: pypa/cibuildwheel@v2.17.0
-        with:
-          output-dir: dist
-
-
-      - name: Upload wheels
-        uses: actions/upload-artifact@v4
-        with:
-          name: dist-wheels
-          path: dist/*.whl
-
-  build_sdist:
-    name: Build source distribution
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Build sdist
-        run: pipx run build --sdist
-
-      - uses: actions/upload-artifact@v4
-        with:
-          name: dist-src
-          path: dist/*.tar.gz
diff --git a/.github/workflows/pypi.yml b/.github/workflows/pypi.yml
deleted file mode 100644
index 243443e..0000000
--- a/.github/workflows/pypi.yml
+++ /dev/null
@@ -1,202 +0,0 @@
-name: Deploy to PyPI
-
-on:
-  release:
-    types: [ created ]
-
-jobs:
-  macos:
-    runs-on: macos-latest
-    strategy:
-      matrix:
-        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12']
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
-        with:
-          python-version: ${{ matrix.python-version }}
-      - name: Install Rust toolchain
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: nightly-2024-02-04
-          target: aarch64-apple-darwin
-          profile: minimal
-          default: true
-      - name: Build wheels - universal2
-        if: ${{ matrix.python-version != '3.7' }}
-        uses: messense/maturin-action@v1
-        with:
-          args: -i python --release --universal2 --out dist
-          rust-toolchain: nightly-2024-02-04
-      - name: Install built wheel - universal2
-        if: ${{ matrix.python-version != '3.7' }}
-        run: |
-          pip install py-ed25519-zebra-bindings --no-index --find-links dist --force-reinstall
-      - name: Upload wheels
-        uses: actions/upload-artifact@v4
-        with:
-          name: dist-wheels-mac-${{ matrix.python-version }}
-          path: dist/*.whl
-  windows:
-    runs-on: windows-latest
-    strategy:
-      matrix:
-        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12']
-        target: [x64, x86]
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
-        with:
-          python-version: ${{ matrix.python-version }}
-          architecture: ${{ matrix.target }}
-      - name: Update rustup
-        run: rustup self update
-      - name: Install Rust toolchain
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: nightly-2024-02-04
-          profile: minimal
-          default: true
-      - name: Build
-        if: matrix.target == 'x64'
-        run: cargo build --release
-      - name: Build wheels
-        uses: messense/maturin-action@v1
-        with:
-          target: ${{ matrix.target }}
-          args: -i python --release --out dist
-          rust-toolchain: nightly-2024-02-04
-      - name: Install built wheel
-        run: |
-          pip install py-ed25519-zebra-bindings --no-index --find-links dist --force-reinstall
-      - name: Upload wheels
-        uses: actions/upload-artifact@v4
-        with:
-          name: dist-wheels-win-${{ matrix.target }}-${{ matrix.python-version }}
-          path: dist/*.whl
-
-  linux:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12']
-        target: [x86_64, i686]
-    steps:
-      - uses: actions/checkout@v4
-      - name: Install Rust toolchain
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: nightly-2024-02-04
-          profile: minimal
-          default: true
-      - name: Build
-        run: cargo build --release
-      - uses: actions/setup-python@v5
-        with:
-          python-version: ${{ matrix.python-version }}
-      - name: Build Wheels
-        uses: messense/maturin-action@v1
-        with:
-          target: ${{ matrix.target }}
-          rust-toolchain: nightly-2024-02-04
-          manylinux: auto
-          args: -i python${{ matrix.python-version }} --release --out dist
-      - name: Upload wheels
-        uses: actions/upload-artifact@v4
-        with:
-          name: dist-wheels-linux-${{ matrix.target }}-${{ matrix.python-version }}
-          path: dist/*.whl
-
-  muslwheels_x86:
-    name: Build musllinux wheels for x86
-    runs-on: ubuntu-latest
-
-    env:
-      CIBW_BUILD_VERBOSITY: 1
-      CIBW_BEFORE_ALL_LINUX: "curl https://sh.rustup.rs -sSf | sh -s -- --default-toolchain nightly-2024-02-04 -y"
-      CIBW_ARCHS_LINUX: "auto64"
-      CIBW_ENVIRONMENT: 'PATH="$PATH:$HOME/.cargo/bin"'
-      CIBW_BUILD: "*-musllinux_x86_64"
-      CIBW_SKIP: "cp27-* cp34-* cp35-* cp36-*"
-
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Build wheels
-        uses: pypa/cibuildwheel@v2.17.0
-        with:
-          output-dir: dist
-
-      - name: Upload wheels
-        uses: actions/upload-artifact@v4
-        with:
-          name: dist-wheels-musl
-          path: dist/*.whl
-
-  aarch64_wheels:
-    name: Build wheels for aarch64 linux
-    runs-on: ubuntu-latest
-
-    env:
-      CIBW_BUILD_VERBOSITY: 1
-      CIBW_BEFORE_ALL_LINUX: "curl https://sh.rustup.rs -sSf | sh -s -- --default-toolchain nightly-2024-02-04 -y"
-      CIBW_ARCHS_LINUX: "aarch64"
-      CIBW_ENVIRONMENT: 'PATH="$PATH:$HOME/.cargo/bin"'
-      CIBW_BUILD: "*-musllinux_aarch64 *-manylinux_aarch64"
-      CIBW_SKIP: "cp27-* cp34-* cp35-* cp36-*"
-
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v3
-        with:
-          platforms: arm64
-
-      - name: Build wheels
-        uses: pypa/cibuildwheel@v2.17.0
-        with:
-          output-dir: dist
-
-
-      - name: Upload wheels
-        uses: actions/upload-artifact@v4
-        with:
-          name: dist-wheels
-          path: dist/*.whl
-
-  build_sdist:
-    name: Build source distribution
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Build sdist
-        run: pipx run build --sdist
-
-      - uses: actions/upload-artifact@v4
-        with:
-          name: dist-src
-          path: dist/*.tar.gz
-
-  release:
-    name: Release
-    runs-on: ubuntu-latest
-    if: "startsWith(github.ref, 'refs/tags/')"
-    needs: [macos, windows, linux, muslwheels_x86, build_sdist]
-    steps:
-      - uses: actions/download-artifact@v4
-        with:
-          pattern: dist-*
-          path: dist
-          merge-multiple: true
-      - uses: actions/setup-python@v2
-        with:
-          python-version: 3.9
-      - name: Publish to PyPi
-        env:
-          TWINE_USERNAME: __token__
-          TWINE_PASSWORD: ${{ secrets.PYPI_PASSWORD }}
-        run: |
-          pip install --upgrade twine
-          twine upload --skip-existing dist/*
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
deleted file mode 100644
index 2d970df..0000000
--- a/.github/workflows/test.yml
+++ /dev/null
@@ -1,45 +0,0 @@
-name: Run units tests
-
-on:
-  push:
-    branches:
-      - main
-      - develop
-  pull_request:
-
-jobs:
-  test:
-    name: Test
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ ubuntu-latest, macos-latest ]
-    runs-on: ${{ matrix.os }}
-    steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v2
-        with:
-          python-version: 3.8
-      - name: Install cffi and virtualenv
-        run: pip install cffi virtualenv
-      - name: Install RUST toolchain
-        uses: actions-rs/toolchain@v1
-        id: rustup
-        with:
-          profile: minimal
-          toolchain: nightly-2022-05-25
-          override: true
-      - name: Build bindings
-        run: |
-          pip install maturin
-          maturin build -i python3.8
-      - name: Install requirements
-        run: |
-          pip install -r requirements.txt
-      - name: Install bindings
-        run: |
-          pip install target/wheels/*.whl
-      - name: Test with pytest
-        run: |
-          pip install pytest
-          pytest tests.py
diff --git a/Cargo.lock b/Cargo.lock
index f266bcd..49f5941 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,45 +1,40 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "ahash"
-version = "0.7.6"
+version = "0.8.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fcb51a0695d8f838b1ee009b3fbf66bda078cd64590202a864a8f3e8c4315c47"
+checksum = "e89da841a80418a9b391ebaea17f5c112ffaaa96f621d2c285b5174da76b9011"
 dependencies = [
- "getrandom",
+ "cfg-if",
  "once_cell",
  "version_check",
+ "zerocopy",
 ]
 
 [[package]]
-name = "autocfg"
-version = "1.1.0"
+name = "allocator-api2"
+version = "0.2.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
+checksum = "5c6cb57a04249c6480766f7f7cef5467412af1490f8d1e243141daddada3264f"
 
 [[package]]
-name = "bitflags"
-version = "1.3.2"
+name = "autocfg"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
+checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
 
 [[package]]
 name = "block-buffer"
-version = "0.9.0"
+version = "0.10.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4152116fd6e9dadb291ae18fc1ec3575ed6d84c29642d97890f4b4a3417297e4"
+checksum = "3078c7629b62d3f0439517fa394996acacc5cbc91c5a20d8c658e77abd503a71"
 dependencies = [
  "generic-array",
 ]
 
-[[package]]
-name = "byteorder"
-version = "1.4.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
-
 [[package]]
 name = "cfg-if"
 version = "1.0.0"
@@ -48,49 +43,90 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "cpufeatures"
-version = "0.2.2"
+version = "0.2.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "59a6001667ab124aebae2a495118e11d30984c3a653e99d86d58971708cf5e4b"
+checksum = "608697df725056feaccfa42cffdaeeec3fccc4ffc38358ecd19b243e716a78e0"
 dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "crypto-common"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1bfb12502f3fc46cca1bb51ac28df9d618d813cdc3d2f25b9fe775a34af26bb3"
+dependencies = [
+ "generic-array",
+ "typenum",
+]
+
 [[package]]
 name = "curve25519-dalek"
-version = "3.2.1"
+version = "4.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "90f9d052967f590a76e62eb387bd0bbb1b000182c3cefe5364db6b7211651bc0"
+checksum = "97fb8b7c4503de7d6ae7b42ab72a5a59857b4c937ec27a3d4539dba95b5ab2be"
 dependencies = [
- "byteorder",
+ "cfg-if",
+ "cpufeatures",
+ "curve25519-dalek-derive",
  "digest",
- "rand_core 0.5.1",
+ "fiat-crypto",
+ "rustc_version",
  "subtle",
  "zeroize",
 ]
 
+[[package]]
+name = "curve25519-dalek-derive"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f46882e17999c6cc590af592290432be3bce0428cb0d5f8b6715e4dc7b383eb3"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "digest"
-version = "0.9.0"
+version = "0.10.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d3dd60d1080a57a05ab032377049e0591415d2b31afd7028356dbf3cc6dcb066"
+checksum = "9ed9a281f7bc9b7576e61468ba615a66a5c8cfdff42420a70aa82701a3b1e292"
 dependencies = [
- "generic-array",
+ "block-buffer",
+ "crypto-common",
+]
+
+[[package]]
+name = "ed25519"
+version = "2.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "115531babc129696a58c64a4fef0a8bf9e9698629fb97e9e40767d235cfbcd53"
+dependencies = [
+ "signature",
 ]
 
 [[package]]
 name = "ed25519-zebra"
-version = "3.1.0"
+version = "4.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7c24f403d068ad0b359e577a77f92392118be3f3c927538f2bb544a5ecd828c6"
+checksum = "7d9ce6874da5d4415896cd45ffbc4d1cfc0c4f9c079427bd870742c30f2f65a9"
 dependencies = [
  "curve25519-dalek",
+ "ed25519",
  "hashbrown",
  "hex",
- "rand_core 0.6.3",
+ "rand_core",
  "sha2",
  "zeroize",
 ]
 
+[[package]]
+name = "fiat-crypto"
+version = "0.2.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "28dea519a9695b9977216879a3ebfddf92f1c08c05d984f8996aecd6ecdc811d"
+
 [[package]]
 name = "generic-array"
 version = "0.14.6"
@@ -114,13 +150,20 @@ dependencies = [
 
 [[package]]
 name = "hashbrown"
-version = "0.12.3"
+version = "0.14.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
+checksum = "e5274423e17b7c9fc20b6e7e208532f9b19825d82dfd615708b70edd83df41f1"
 dependencies = [
  "ahash",
+ "allocator-api2",
 ]
 
+[[package]]
+name = "heck"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
+
 [[package]]
 name = "hex"
 version = "0.4.3"
@@ -129,80 +172,36 @@ checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
 
 [[package]]
 name = "indoc"
-version = "1.0.9"
+version = "2.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bfa799dd5ed20a7e349f3b4639aa80d74549c81716d9ec4f994c9b5815598306"
-
-[[package]]
-name = "instant"
-version = "0.1.12"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7a5bbe824c507c5da5956355e86a746d82e0e1464f65d862cc5e71da70e94b2c"
-dependencies = [
- "cfg-if",
-]
+checksum = "b248f5224d1d606005e02c97f5aa4e88eeb230488bcc03bc9ca4d7991399f2b5"
 
 [[package]]
 name = "libc"
-version = "0.2.131"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "04c3b4822ccebfa39c02fc03d1534441b22ead323fa0f48bb7ddd8e6ba076a40"
-
-[[package]]
-name = "lock_api"
-version = "0.4.7"
+version = "0.2.161"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "327fa5b6a6940e4699ec49a9beae1ea4845c6bab9314e4f84ac68742139d8c53"
-dependencies = [
- "autocfg",
- "scopeguard",
-]
+checksum = "8e9489c2807c139ffd9c1794f4af0ebe86a828db53ecdc7fea2111d0fed085d1"
 
 [[package]]
 name = "memoffset"
-version = "0.8.0"
+version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d61c719bcfbcf5d62b3a09efa6088de8c54bc0bfcd3ea7ae39fcc186108b8de1"
+checksum = "488016bfae457b036d996092f6cb448677611ce4449e970ceaf42695203f218a"
 dependencies = [
  "autocfg",
 ]
 
 [[package]]
 name = "once_cell"
-version = "1.17.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b7e5500299e16ebb147ae15a00a942af264cf3688f47923b8fc2cd5858f23ad3"
-
-[[package]]
-name = "opaque-debug"
-version = "0.3.0"
+version = "1.20.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "624a8340c38c1b80fd549087862da4ba43e08858af025b236e509b6649fc13d5"
+checksum = "1261fe7e33c73b354eab43b1273a57c8f967d0391e80353e51f764ac02cf6775"
 
 [[package]]
-name = "parking_lot"
-version = "0.11.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7d17b78036a60663b797adeaee46f5c9dfebb86948d1255007a1d6be0271ff99"
-dependencies = [
- "instant",
- "lock_api",
- "parking_lot_core",
-]
-
-[[package]]
-name = "parking_lot_core"
-version = "0.8.5"
+name = "portable-atomic"
+version = "1.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d76e8e1493bcac0d2766c42737f34458f1c8c50c0d23bcb24ea953affb273216"
-dependencies = [
- "cfg-if",
- "instant",
- "libc",
- "redox_syscall",
- "smallvec",
- "winapi",
-]
+checksum = "cc9c68a3f6da06753e9335d63e27f6b9754dd1920d941135b7ea8224f141adb2"
 
 [[package]]
 name = "ppv-lite86"
@@ -212,16 +211,16 @@ checksum = "eb9f9e6e233e5c4a35559a617bf40a4ec447db2e84c20b55a6f83167b7e57872"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.43"
+version = "1.0.89"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0a2ca2c61bc9f3d74d2886294ab7b9853abd9c1ad903a3ac7815c58989bb7bab"
+checksum = "f139b0662de085916d1fb67d2b4169d1addddda1919e696f3252b740b629986e"
 dependencies = [
  "unicode-ident",
 ]
 
 [[package]]
 name = "py-ed25519-zebra-bindings"
-version = "1.0.1"
+version = "1.1.0"
 dependencies = [
  "ed25519-zebra",
  "pyo3",
@@ -230,15 +229,16 @@ dependencies = [
 
 [[package]]
 name = "pyo3"
-version = "0.18.1"
+version = "0.22.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "06a3d8e8a46ab2738109347433cb7b96dffda2e4a218b03ef27090238886b147"
+checksum = "3d922163ba1f79c04bc49073ba7b32fd5a8d3b76a87c955921234b8e77333c51"
 dependencies = [
  "cfg-if",
  "indoc",
  "libc",
  "memoffset",
- "parking_lot",
+ "once_cell",
+ "portable-atomic",
  "pyo3-build-config",
  "pyo3-ffi",
  "pyo3-macros",
@@ -247,9 +247,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-build-config"
-version = "0.18.1"
+version = "0.22.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "75439f995d07ddfad42b192dfcf3bc66a7ecfd8b4a1f5f6f046aa5c2c5d7677d"
+checksum = "bc38c5feeb496c8321091edf3d63e9a6829eab4b863b4a6a65f26f3e9cc6b179"
 dependencies = [
  "once_cell",
  "target-lexicon",
@@ -257,9 +257,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-ffi"
-version = "0.18.1"
+version = "0.22.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "839526a5c07a17ff44823679b68add4a58004de00512a95b6c1c98a6dcac0ee5"
+checksum = "94845622d88ae274d2729fcefc850e63d7a3ddff5e3ce11bd88486db9f1d357d"
 dependencies = [
  "libc",
  "pyo3-build-config",
@@ -267,9 +267,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros"
-version = "0.18.1"
+version = "0.22.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bd44cf207476c6a9760c4653559be4f206efafb924d3e4cbf2721475fc0d6cc5"
+checksum = "e655aad15e09b94ffdb3ce3d217acf652e26bbc37697ef012f5e5e348c716e5e"
 dependencies = [
  "proc-macro2",
  "pyo3-macros-backend",
@@ -279,20 +279,22 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros-backend"
-version = "0.18.1"
+version = "0.22.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dc1f43d8e30460f36350d18631ccf85ded64c059829208fe680904c65bcd0a4c"
+checksum = "ae1e3f09eecd94618f60a455a23def79f79eba4dc561a97324bf9ac8c6df30ce"
 dependencies = [
+ "heck",
  "proc-macro2",
+ "pyo3-build-config",
  "quote",
  "syn",
 ]
 
 [[package]]
 name = "quote"
-version = "1.0.21"
+version = "1.0.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bbe448f377a7d6961e30f5955f9b8d106c3f5e449d493ee1b125c1d43c2b5179"
+checksum = "b5b9d34b8991d19d98081b46eacdd8eb58c6f2b201139f7c5f643cc155a633af"
 dependencies = [
  "proc-macro2",
 ]
@@ -305,7 +307,7 @@ checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
 dependencies = [
  "libc",
  "rand_chacha",
- "rand_core 0.6.3",
+ "rand_core",
 ]
 
 [[package]]
@@ -315,15 +317,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
 dependencies = [
  "ppv-lite86",
- "rand_core 0.6.3",
+ "rand_core",
 ]
 
-[[package]]
-name = "rand_core"
-version = "0.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "90bde5296fc891b0cef12a6d03ddccc162ce7b2aff54160af9338f8d40df6d19"
-
 [[package]]
 name = "rand_core"
 version = "0.6.3"
@@ -334,38 +330,36 @@ dependencies = [
 ]
 
 [[package]]
-name = "redox_syscall"
-version = "0.2.16"
+name = "rustc_version"
+version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fb5a58c1855b4b6819d59012155603f0b22ad30cad752600aadfcb695265519a"
+checksum = "cfcb3a22ef46e85b45de6ee7e79d063319ebb6594faafcf1c225ea92ab6e9b92"
 dependencies = [
- "bitflags",
+ "semver",
 ]
 
 [[package]]
-name = "scopeguard"
-version = "1.1.0"
+name = "semver"
+version = "1.0.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
+checksum = "61697e0a1c7e512e84a621326239844a24d8207b4669b41bc18b32ea5cbf988b"
 
 [[package]]
 name = "sha2"
-version = "0.9.9"
+version = "0.10.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4d58a1e1bf39749807d89cf2d98ac2dfa0ff1cb3faa38fbb64dd88ac8013d800"
+checksum = "793db75ad2bcafc3ffa7c68b215fee268f537982cd901d132f89c6343f3a3dc8"
 dependencies = [
- "block-buffer",
  "cfg-if",
  "cpufeatures",
  "digest",
- "opaque-debug",
 ]
 
 [[package]]
-name = "smallvec"
-version = "1.9.0"
+name = "signature"
+version = "2.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2fd0db749597d91ff862fd1d55ea87f7855a744a8425a64695b6fca237d1dad1"
+checksum = "77549399552de45a898a580c1b41d445bf730df867cc44e6c0233bbc4b8329de"
 
 [[package]]
 name = "subtle"
@@ -375,9 +369,9 @@ checksum = "6bdef32e8150c2a081110b42772ffe7d7c9032b606bc226c8260fd97e0976601"
 
 [[package]]
 name = "syn"
-version = "1.0.99"
+version = "2.0.85"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "58dbef6ec655055e20b86b15a8cc6d439cca19b667537ac6a1369572d151ab13"
+checksum = "5023162dfcd14ef8f32034d8bcd4cc5ddc61ef7a247c024a33e24e1f24d21b56"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -386,9 +380,9 @@ dependencies = [
 
 [[package]]
 name = "target-lexicon"
-version = "0.12.6"
+version = "0.12.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ae9980cab1db3fceee2f6c6f643d5d8de2997c58ee8d25fb0cc8a9e9e7348e5"
+checksum = "61c41af27dd6d1e27b1b16b489db798443478cef1f06a660c96db617ba5de3b1"
 
 [[package]]
 name = "typenum"
@@ -404,9 +398,9 @@ checksum = "c4f5b37a154999a8f3f98cc23a628d850e154479cd94decf3414696e12e31aaf"
 
 [[package]]
 name = "unindent"
-version = "0.1.10"
+version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "58ee9362deb4a96cef4d437d1ad49cffc9b9e92d202b6995674e928ce684f112"
+checksum = "c7de7d73e1754487cb58364ee906a499937a0dfabd86bcb980fa99ec8c8fa2ce"
 
 [[package]]
 name = "version_check"
@@ -421,29 +415,41 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
 
 [[package]]
-name = "winapi"
-version = "0.3.9"
+name = "zerocopy"
+version = "0.7.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+checksum = "1b9b4fd18abc82b8136838da5d50bae7bdea537c574d8dc1a34ed098d6c166f0"
 dependencies = [
- "winapi-i686-pc-windows-gnu",
- "winapi-x86_64-pc-windows-gnu",
+ "zerocopy-derive",
 ]
 
 [[package]]
-name = "winapi-i686-pc-windows-gnu"
-version = "0.4.0"
+name = "zerocopy-derive"
+version = "0.7.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+checksum = "fa4f8080344d4671fb4e831a13ad1e68092748387dfc4f55e356242fae12ce3e"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
 
 [[package]]
-name = "winapi-x86_64-pc-windows-gnu"
-version = "0.4.0"
+name = "zeroize"
+version = "1.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+checksum = "ced3678a2879b30306d323f4542626697a464a97c0a07c9aebf7ebca65cd4dde"
+dependencies = [
+ "zeroize_derive",
+]
 
 [[package]]
-name = "zeroize"
-version = "1.3.0"
+name = "zeroize_derive"
+version = "1.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4756f7db3f7b5574938c3eb1c117038b8e07f95ee6718c0efad4ac21508f1efd"
+checksum = "ce36e65b0d2999d2aafac989fb249189a141aee1f53c612c1f37d72631959f69"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
diff --git a/Cargo.toml b/Cargo.toml
index 6605501..b2935ec 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
 name = "py-ed25519-zebra-bindings"
 description = "Python bindings for the ed25519-zebra RUST crate"
 authors=["Stichting Polkascan (Polkascan Foundation)"]
-version = "1.0.1"
+version = "1.1.0"
 repository = "https://github.com/polkascan/py-ed25519-zebra-bindings"
 homepage = "https://github.com/polkascan/py-ed25519-zebra-bindings"
 license = "Apache-2.0"
@@ -10,7 +10,7 @@ readme = "README.md"
 edition = "2018"
 
 [dependencies]
-ed25519-zebra = { version = "3.0.0", default-features = false}
+ed25519-zebra = { version = "4.0.3", default-features = false}
 rand = "0.8.5"
 
 [lib]
@@ -18,5 +18,5 @@ name = "ed25519_zebra"
 crate-type = ["cdylib"]
 
 [dependencies.pyo3]
-version = "0.18.1"
+version = "0.22.5"
 features = ["extension-module"]
diff --git a/pyproject.toml b/pyproject.toml
index cb01c9d..eb4688c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,13 +1,13 @@
 [build-system]
-requires = ["maturin>=0.14,<0.15"]
+requires = ["maturin>=1.7.0,<1.8.0"]
 build-backend = "maturin"
 
 [project]
 name = "py-ed25519-zebra-bindings"
-version = "1.0.1"
+version = "1.1.0"
 description = "Python bindings for the ed25519-zebra RUST crate"
 readme = "README.md"
-requires-python = ">=3.7"
+requires-python = ">=3.9"
 license = {file = "LICENSE"}
 authors = [
   {email = "info@polkascan.org"},
@@ -19,9 +19,6 @@ maintainers = [
 classifiers = [
     "License :: OSI Approved :: Apache Software License",
     "Intended Audience :: Developers",
-    "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.7",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
diff --git a/requirements.txt b/requirements.txt
index 5c87ea3..f359ad7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 # Rust->Python build process
-maturin>=0.14,<0.15
+maturin~=1.7
 toml
 # Dev-only
 bumpversion
diff --git a/src/lib.rs b/src/lib.rs
index 1875cd7..f766a73 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -71,6 +71,23 @@ pub fn ed_from_seed(seed: &[u8]) -> PyResult<PyKeypair> {
 	Ok(PyKeypair(keypair.secret.into(), keypair.public.into()))
 }
 
+/// Returns a public key for the given private key.
+///
+/// # Arguments
+///
+/// * `secret` - A 32 byte private key.
+///
+/// # Returns
+///
+/// 32-byte public key.
+#[pyfunction]
+pub fn ed_public_from_secret(secret: &[u8], py: Python) -> PyResult<Py<PyBytes>> {
+	let secret = SigningKey::try_from(secret).map_err(|err| exceptions::PyValueError::new_err(format!("Invalid secret key: {}", err.to_string())))?;
+	let public = VerificationKey::from(&secret);
+
+	Ok(PyBytes::new_bound(py, &public.as_ref()).into())
+}
+
 /// Signs a message with the given keypair, returning the resulting signature.
 ///
 /// # Arguments
@@ -118,28 +135,30 @@ pub fn ed_verify(signature: &[u8], message: &[u8], public: &[u8]) -> bool {
 
 /// This module is a Python module implemented in Rust.
 #[pymodule]
-fn ed25519_zebra(_py: Python<'_>, m: &PyModule) -> PyResult<()> {
-    m.add_wrapped(wrap_pyfunction!(ed_from_seed))?;
-    m.add_wrapped(wrap_pyfunction!(ed_sign))?;
-    m.add_wrapped(wrap_pyfunction!(ed_verify))?;
-
+fn ed25519_zebra(m: &Bound<'_, PyModule>) -> PyResult<()> {
+    m.add_function(wrap_pyfunction!(ed_from_seed, m)?)?;
+    m.add_function(wrap_pyfunction!(ed_sign, m)?)?;
+    m.add_function(wrap_pyfunction!(ed_verify, m)?)?;
+    m.add_function(wrap_pyfunction!(ed_public_from_secret, m)?)?;
     Ok(())
 }
 
 // Convert Keypair object to a Python Keypair tuple
 impl IntoPy<PyObject> for PyKeypair {
     fn into_py(self, py: Python) -> PyObject {
-        let secret = PyBytes::new(py, &self.0);
-        let public = PyBytes::new(py, &self.1);
+        let secret = PyBytes::new_bound(py, &self.0);
+        let public = PyBytes::new_bound(py, &self.1);
 
-        PyTuple::new(py, vec![secret, public]).into_py(py)
+        PyTuple::new_bound(py, vec![secret, public]).into_py(py)
     }
 }
 
 // Convert Keypair object to a Python Keypair tuple
 impl IntoPy<PyObject> for PySignature {
     fn into_py(self, py: Python) -> PyObject {
-        let sig = PyBytes::new(py, &self.0);
+        // let sig = PyBytes::new(py, &self.0);
+        let sig = PyBytes::new_bound(py, &self.0);
+
         sig.into_py(py)
     }
 }
diff --git a/tests.py b/tests.py
index 82ab4b4..a1cbe71 100644
--- a/tests.py
+++ b/tests.py
@@ -69,6 +69,11 @@ def test_sign_invalid_private_key_length(self):
         with self.assertRaises(ValueError):
             ed25519_zebra.ed_sign(bytes(1), b"test")
 
+    def test_public_from_private(self):
+        private_key = bytes(32)
+        public_key = ed25519_zebra.ed_public_from_secret(private_key)
+        self.assertEqual(bytes.fromhex("3b6a27bcceb6a42d62a3a8d02a6f0d73653215771de243a63ac048a18b59da29"), public_key)
+
 
 if __name__ == '__main__':
     unittest.main()