diff --git a/lib/authgraph-rust/tests/rules.mk b/lib/authgraph-rust/tests/rules.mk
new file mode 100644
index 0000000..cf44f58
--- /dev/null
+++ b/lib/authgraph-rust/tests/rules.mk
@@ -0,0 +1,31 @@
+# Copyright (C) 2025 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+LOCAL_DIR := $(GET_LOCAL_DIR)
+
+MODULE := $(LOCAL_DIR)
+
+MODULE_SRCS := system/authgraph/tests/src/lib.rs
+
+MODULE_CRATE_NAME := authgraph_core_test
+
+MODULE_LIBRARY_DEPS += \
+	packages/modules/Virtualization/libs/dice/open_dice \
+	trusty/user/base/lib/authgraph-rust/core \
+	trusty/user/base/lib/authgraph-rust/wire \
+	trusty/user/base/lib/hex-rust \
+	$(call FIND_CRATE,coset) \
+
+include make/library.mk
\ No newline at end of file
diff --git a/lib/hex-rust/rules.mk b/lib/hex-rust/rules.mk
new file mode 100644
index 0000000..f02dc65
--- /dev/null
+++ b/lib/hex-rust/rules.mk
@@ -0,0 +1,36 @@
+# Copyright (C) 2025 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+LOCAL_DIR := $(GET_LOCAL_DIR)
+
+MODULE := $(LOCAL_DIR)
+
+MODULE_SRCS := external/rust/android-crates-io/crates/hex/src/lib.rs
+
+MODULE_CRATE_NAME := hex
+
+MODULE_RUSTFLAGS += \
+	--cfg 'feature="alloc"' \
+	--cfg 'feature="default"' \
+	--cfg 'feature="std"' \
+
+MODULE_LIBRARY_DEPS += \
+	packages/modules/Virtualization/libs/dice/open_dice \
+	trusty/user/base/lib/authgraph-rust/core \
+	trusty/user/base/lib/authgraph-rust/wire \
+	trusty/user/base/lib/hex-rust \
+	$(call FIND_CRATE,coset) \
+
+include make/library.mk
\ No newline at end of file