Copyright 2018 Asylo authors
The Asylo project documentation can be found at asylo.dev.
Example source code that contains a working Bazel workspace can be downloaded from the Asylo website and used as a template for a new project.
There are several ways of getting support with Asylo:
- Join the asylo-users mailing list to participate in discussions and get help troubleshooting problems.
- Ask questions and find curated answers on StackOverflow using the asylo tag.
Asylo provides a custom Docker image that contains all required dependencies, as well as Asylo's custom toolchain, which is required for compiling enclave applications for various enclave backends.
docker run -it --rm gcr.io/asylo-framework/asylo
See the Dockerfile for an in-depth view of what's inside the container image.
See this guide for additional details on how to pull images from Google's Container Registry.
To run the hello_world
example, first use the following set of commands to
grab the examples source code, and
save it to any directory of your choice.
MY_PROJECT=~/asylo-examples
mkdir -p "${MY_PROJECT}"
wget -q -O - https://asylo.dev/asylo-examples.tar.gz | \
tar -zxv --directory "${MY_PROJECT}"
Next, use Docker to build and run the hello_world
application, using a
simulated enclave backend.
NAMES="${USER}"
docker run -it --rm \
-v bazel-cache:/root/.cache/bazel \
-v "${MY_PROJECT}":/opt/my-project \
-w /opt/my-project \
gcr.io/asylo-framework/asylo \
bazel run --config=enc-sim //hello_world -- --names="${NAMES}"
You can also set NAMES
to a comma-separated list of names and see the
enclave's entry-point get invoked for each name.
In the above example, we use the following Docker flags:
-it
is used to allocate an interactive terminal in which the command is run.--rm
is used to automatically delete the temporary container after the command completes so that unnecessary images don't persist on disk.-v
is used to map local files to paths inside the container.- The example project files are mapped to
/opt/my-project
. - The local Bazel cache is mapped to
/root/.cache/bazel
, enabling incremental builds betweenbazel
invocations.
- The example project files are mapped to
-w
is used to set the working directory in the container so thatbazel run
command is executed in the example project.
If using the Intel SGX hardware backend (see the Manual Installation guide), the following Docker flags are needed to propagate the necessary capabilities from the host:
--device=/dev/isgx
gives the container access to the SGX device that is used to interact with the SGX hardware features.-v /var/run/aesmd/aesm.socket:/var/run/aesmd/aesm.socket
allows the container to access the Architectural Enclave Service Manager (AESM) daemon running on the host.
In the above example, we use the following Bazel flags:
--config=CONFIG
configures the Asylo toolchain to build the target for a given enclave backend. You can specify--config=enc-sim
to build the enclave for the enclave simulation backend or--config=sgx
to build the enclave for the Intel SGX hardware backend.--names="${NAMES}"
is the argument passed to the//hello_world
target.
Note: The example source code includes an additional Bazel configuration file,
.bazelrc
, at the root of the source tree. Remember to copy the contents of
this file into the .bazelrc
file at the root of any future Bazel workspaces
that use Asylo's toolchain.
You can follow the steps above to build your
own enclave application instead. You can use the examples code in MY_PROJECT
as a template for a new project, or simply change MY_PROJECT
to point to your
own Bazel project instead.
You can get an interactive terminal (instead of running a single command) by
omitting the bazel run ...
part of the docker
invocation. For instance, to
run the hello_world
example as above but in an interactive terminal, run:
docker run -it --rm \
-v bazel-cache:/root/.cache/bazel \
-v "${MYPROJECT}":/opt/my-project \
-w /opt/my-project \
gcr.io/asylo-framework/asylo
This opens a terminal inside the Docker container. From this terminal, you can run Bazel as usual:
bazel run --config=enc-sim //hello_world -- --names="${NAMES}"
To run our regression test suite, first clone the Asylo repository to a directory of your choice.
ASYLO_SDK=~/asylo-sdk
git clone https://github.com/google/asylo.git "${ASYLO_SDK}"
The regression test suite includes tests that unit-test code directly as well as tests that run inside a simulated enclave environment. You can run it with the following command:
docker run -it --rm \
-v "${ASYLO_SDK}:/opt/asylo/sdk" \
-v bazel-cache:/root/.cache/bazel \
-w "/opt/asylo/sdk" \
gcr.io/asylo-framework/asylo \
asylo/test/run_enclave_tests.sh
See Docker flags for a breakdown of the flags used in this
command. Note that in this command we also use -v
to map the Asylo SDK source
files to /opt/asylo/sdk
.
If you don't want to use the Asylo Docker image, you can manually install Asylo and its dependencies instead.
See INSTALL.md for detailed installation steps.
The following examples assume that the Asylo SDK was installed at ASYLO_SDK
,
which can be a directory of your choice. For example:
To run the hello_world
example, first use the following commands to grab the
examples source code and save it to
any directory of your choice.
MY_PROJECT=~/asylo-examples
mkdir -p "${MY_PROJECT}"
wget -q -O - https://asylo.dev/asylo-examples.tar.gz | \
tar -zxv --directory "${MY_PROJECT}"
Next, use Bazel to build and run the hello_world
application, which uses a
simulated enclave backend:
cd "${MY_PROJECT}"
NAMES="${USER}"
bazel run --config=enc-sim //hello_world -- --names="${NAMES}"
Refer to Bazel flags and workspace settings for an explanation of the flags and workspace configuration used in this example.
You can follow the steps above to build
your own enclave application instead. You can use the examples code in
MY_PROJECT
as the start of your own project, or simply change MY_PROJECT
to
point to your own Bazel project instead.
If you haven't already, use the following commands to clone the Asylo source code repository and copy it to a directory of your choice.
ASYLO_SDK=~/asylo-sdk
git clone https://github.com/google/asylo.git "${ASYLO_SDK}"
The regression test suite includes tests that unit-test code directly as well as tests that run inside a simulated enclave environment. You can run it with the following command:
"${ASYLO_SDK}"/asylo/test/run_enclave_tests.sh
This repository contains source code for the Asylo framework. The 0.3 release of the framework supports C++11 applications and a Bazel build environment.
The following packages contain source code that may be of particular interest to users of the Asylo framework as well as those looking to contribute to Asylo development.
- asylo
- crypto/
- Crypto utilities and wrappers around BoringSSL.
- distrib/
- Asylo toolchain and dependencies.
- examples/
- Sample applications written with the Asylo framework.
- grpc/
- identity/
- Identity and attestation support.
- platform/
- Implementation of enclave platforms and backends.
- test/
- Testing utilities provided to application writers.
- util/
- Common utilities provided for use both inside and outside an enclave environment.
- crypto/
This is not an officially supported Google product.
Asylo's support for various enclave backend technologies does not constitute an endorsement of those technologies or the security properties therein. Users of Asylo should perform due diligence in evaluating whether a backend technology meets the security requirements of their application. Users are advised to use defense-in-depth measures to protect their sensitive applications.