Add ATECC608 simulator

.github/workflows/atecc608-sdk-test.yml

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+name: ATECC608 SDK test
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: ['**']
+  workflow_dispatch:
+
+jobs:
+  sdk-test:
+    name: cryptoauthlib + OpenSSL cross-verification
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: docker/setup-buildx-action@v3
+
+      - name: Build sdk-test image
+        uses: docker/build-push-action@v6
+        with:
+          context: ATECC608Sim
+          file: ATECC608Sim/Dockerfile.sdk-test
+          tags: atecc608-sdk-test:ci
+          load: true
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+
+      - name: Run sdk-test suite
+        run: docker run --rm atecc608-sdk-test:ci

.github/workflows/atecc608-test-suite.yml

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+name: ATECC608 test suite
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: ['**']
+  workflow_dispatch:
+
+jobs:
+  cargo-test:
+    name: cargo test (unit + integration)
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: dtolnay/rust-toolchain@stable
+
+      - uses: Swatinem/rust-cache@v2
+        with:
+          workspaces: ATECC608Sim/atecc608-sim
+
+      - name: cargo test
+        run: |
+          cargo test --manifest-path ATECC608Sim/atecc608-sim/Cargo.toml \
+            -- --test-threads=1

.github/workflows/atecc608-wolfcrypt-test.yml

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+name: ATECC608 wolfCrypt test
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: ['**']
+  workflow_dispatch:
+
+jobs:
+  wolfcrypt-test:
+    name: wolfCrypt + cryptoauthlib integration
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: docker/setup-buildx-action@v3
+
+      - name: Build wolfcrypt-test image
+        uses: docker/build-push-action@v6
+        with:
+          context: ATECC608Sim
+          file: ATECC608Sim/Dockerfile.wolfcrypt
+          tags: atecc608-wolfcrypt-test:ci
+          load: true
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+
+      - name: Run wolfCrypt test suite
+        run: docker run --rm atecc608-wolfcrypt-test:ci

ATECC608Sim/.gitignore

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+# Build artifacts
+target/
+atecc608-sim/target/
+
+# Runtime state
+atecc608_store.json
+
+# Editor files
+.idea/
+.vscode/
+*.swp
+*.swo
+*~
+
+# OS files
+.DS_Store
+Thumbs.db

ATECC608Sim/Dockerfile

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+FROM rust:1.85-bookworm
+
+WORKDIR /app
+
+COPY atecc608-sim/ /app/atecc608-sim/
+
+RUN cd /app/atecc608-sim && cargo build 2>&1
+
+CMD ["cargo", "test", "--manifest-path", "/app/atecc608-sim/Cargo.toml", "--", "--test-threads=1", "--nocapture"]

ATECC608Sim/Dockerfile.sdk-test

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+# Stage 1: build the Rust simulator TCP server
+FROM rust:1.85-bookworm AS sim-builder
+
+WORKDIR /app
+COPY atecc608-sim/ /app/atecc608-sim/
+RUN cd /app/atecc608-sim && cargo build --release --bin tcp_server 2>&1
+
+# =============================================================================
+# Stage 2: build cryptoauthlib + test binary
+# =============================================================================
+FROM debian:bookworm
+
+RUN apt-get update && apt-get install -y \
+    build-essential cmake git pkg-config \
+    libssl-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY --from=sim-builder /app/atecc608-sim/target/release/tcp_server /app/atecc608-sim-server
+
+# ---- Build cryptoauthlib ----
+WORKDIR /app
+# Pin to a recent known-working tag. v3.7.8 is the latest as of early 2026.
+RUN git clone --branch v3.7.8 --depth 1 \
+    https://github.com/MicrochipTech/cryptoauthlib.git /app/cryptoauthlib
+
+# We register our HAL at runtime by populating ATCAIfaceCfg.atcacustom, so
+# cryptoauthlib just needs ATCA_HAL_CUSTOM=ON and the other HALs disabled
+# (they pull in libraries we don't have in the container).
+RUN mkdir -p /app/cryptoauthlib/build && cd /app/cryptoauthlib/build && \
+    cmake .. \
+        -DCMAKE_BUILD_TYPE=Release \
+        -DCMAKE_C_FLAGS="-fPIC" \
+        -DATCA_HAL_CUSTOM=ON \
+        -DATCA_HAL_I2C=OFF \
+        -DATCA_HAL_SPI=OFF \
+        -DATCA_HAL_KIT_UART=OFF \
+        -DATCA_HAL_KIT_HID=OFF \
+        -DATCA_HAL_KIT_BRIDGE=OFF \
+        -DATCA_BUILD_SHARED_LIBS=OFF \
+        -DATCA_OPENSSL=OFF \
+        -DATCA_ATECC608_SUPPORT=ON \
+        -DATCA_PRINTF=ON \
+        2>&1 && \
+    cmake --build . -j$(nproc) 2>&1 && \
+    cmake --install . 2>&1
+
+# ---- Build test binary ----
+COPY sdk-test/ /app/sdk-test/
+
+# We link hal_tcp.c directly into the test binary (cryptoauthlib's CMake
+# compiles a stubbed `hal_custom.c` into the archive but doesn't link
+# user code, so we supply it here ourselves).
+RUN gcc -o /app/test_atecc608 \
+    /app/sdk-test/test_atecc608.c \
+    /app/sdk-test/hal_tcp.c \
+    -I/app/sdk-test \
+    -I/usr/include/cryptoauthlib \
+    -I/app/cryptoauthlib/build/lib \
+    -L/usr/lib \
+    -lcryptoauth -lssl -lcrypto -lpthread \
+    2>&1
+
+COPY sdk-test/run_test.sh /app/run_test.sh
+RUN chmod +x /app/run_test.sh
+
+CMD ["/app/run_test.sh"]