Add Frodo-KEM (#76)

This code follows the Round 3 submission

https://frodokem.org/files/FrodoKEM-specification-20210604.pdf

.github/workflows/frodo-kem.yml

@@ -0,0 +1,144 @@
+name: frodo-kem
+
+on:
+  pull_request:
+    paths:
+      - "frodo-kem/**"
+      - "Cargo.*"
+    paths-ignore: 
+      - README.md
+      - SECURITY.md
+      - LICENSE-APACHE
+      - LICENSE-MIT
+      - .pants-ignore
+      - rustfmt.toml
+  push:
+    branches: master
+      - "frodo-kem/**"
+      - "Cargo.*"
+    paths-ignore:
+      - README.md
+      - SECURITY.md
+      - LICENSE-APACHE
+      - LICENSE-MIT
+      - .pants-ignore
+      - rustfmt.toml
+
+env:
+  CARGO_INCREMENTAL: 0
+  CARGO_TERM_COLOR: always
+  RUST_LOG_STYLE: always
+  RUSTFLAGS: "-Dwarnings"
+  RUSTDOCFLAGS: "-Dwarnings"
+
+defaults:
+  run:
+    working-directory: frodo-kem
+    shell: bash
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: stable
+      - run: cargo build --no-default-features --features=frodo
+      - run: cargo build --no-default-features --features=efrodo
+      - run: cargo build --no-default-features || [ $? -eq 101 ]
+      - run: cargo build --all-features
+
+
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: stable
+      - run: cargo build --all-features --benches --release --keep-going
+      - run: cargo test --all-features --release
+      - run: cargo test --no-default-features --features=frodo,efrodo,serde --release
+
+  careful:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@nightly
+      - run: cargo install cargo-careful
+      - run: cargo careful test tests
+      - run: cargo careful test test_vector --release
+
+  clippy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: stable
+          components: clippy
+      - run: cargo clippy --all --all-features -- -D warnings
+      - run: cargo clippy --all --no-default-features --features=frodo,efrodo,serde -- -D warnings
+
+  rustfmt:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: stable
+          components: rustfmt
+      - run: cargo fmt -- --check
+
+  doc:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: stable
+      - run: cargo doc --all-features
+
+  deps:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@nightly
+      - run: cargo install cargo-udeps
+      - run: cargo udeps --all-targets --all-features
+
+  outdated:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@nightly
+      - run: cargo install cargo-outdated
+      - run: cargo outdated --root-deps-only --exit-code 1
+
+  pants:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@nightly
+      - run: cargo install cargo-pants
+      - run: cargo pants --loud --dev
+
+  cross:
+    needs: set-msrv
+    strategy:
+      matrix:
+        include:
+          - target: powerpc-unknown-linux-gnu
+            rust: ${{needs.set-msrv.outputs.msrv}}
+          - target: powerpc-unknown-linux-gnu
+            rust: stable
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: ${{ matrix.rust }}
+          targets: ${{ matrix.target }}
+      - uses: RustCrypto/actions/cross-install@master
+      - run: cross test --release --target ${{ matrix.target }} --all-features