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Rust SGX SDK provides the ability to write Intel SGX applications in Rust Programming Language.

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Rust SGX Logo

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Rust SGX SDK

Rust SGX SDK helps developers write Intel SGX applications in Rust programming language. [Paper pdf]

Good news! Our paper "Towards Memory Safety for Enclave Programs with Rust-SGX" has been accepted in ACM CCS'19. See you guys in London!

We open-sourced gbdt-rs, a light-weight, amazingly fast, memory safe, and trustworthy gradient boosting decision tree implementation and the paper has been accepted by IEEE S&P'19! It is optimized for SGX!

To achieve better security, we recommend developers to apply Non-bypassable Security Paradigm (NbSP) to the system design and implementation.

To help understand this project and know how to use it, we are writing some wiki articles. Please send me an email if you'd like to see other topics. We'll add it as soon as possible.

Current wiki pages:

v1.0.9 Release

Supports Intel SGX SDK v2.6, and Rust nightly-2019-08-01. Bumps everything to edition. Removed third_party directory since we have all of those dependencies forked and maintained with merge bot. Since Intel SGX SDK v2.6 imports some breaking changes in global thread metata, thread local features of v1.0.9 is not works on Intel SGX SDK v2.5. EDL and common headers are changed respectively. For detailed information, please refer to release_notes for more details.

v1.0.8 Release

Supports the most recent Rust nightly (nightly-2019-05-22) and Rust stable (stable-2019-05-14). Code coverage support has been added to sgx_cov. Bug fixes in memory allocator and panicking routines. New third party libraries to support kvdb-memorydb. Please refer to release_notes for more details.

v1.0.7 Release

Supports Intel SGX SDK v2.5. Master branch supports Rust nightly build (nightly-2019-04-26) and stable branch supports Rust stable build (stable-2019-04-25). Refactored sgx_tstd to support mio. More sample codes added, including Java/Go clients for ue-ra (Thanks to @bradyjoestar)!. And we are maintaining forks of popular crates on Github organization mesalock-linux. The ported crates are syncing with the original crates with the help of Pull bot and we manually port almost all tests from the original crates to test if the ported crate works well in SGX. Please refer to release_notes for further details.

We changed the built-in EDL files. Please carefully upgrade your EDL files on import statements. If you encountered any problems during compilation, please create issue and let me know. Thanks!

ATTENTION: (Ubuntu Channel) Starts from Intel SGX SDK 2.5, aesmd requires a environment variable to start. If you are using docker, please start aesmd as:

LD_LIBRARY_PATH=/opt/intel/libsgx-enclave-common/aesm /opt/intel/libsgx-enclave-common/aesm/aesm_service

(CentOS Channel) As of 2.6, CentOS branch of Intel SGX SDK is still in format of bin executable. Please start the aesmd as past:

LD_LIBRARY_PATH=/opt/intel/sgxpsw/aesm /opt/intel/sgxpsw/aesm/aesm_service

v1.0.6 Release

Fix bugs in sgx_alloc, sgx_types, ucd-generate and improve sgx_tunittest. Added rust-base58. Thanks to @elichai, @cbeck88, @brenzi and @nhynes.

v1.0.5 Release

This version supports Rust nightly build (nightly-2019-01-28, v1.34.0) in the master branch and the most recent stable build (stable-2019-01-16, v1.32.0) in the rust-stable branch. It supports the latest Intel SGX SDK v2.4.0 and Ubuntu Linux 16.04+18.04. We provide support to Intel's Protected Code Loader. We provide sgx_ucrypto and sgx_crypto_helper for using SGX-style crypto primitives in untrusted app and RSA keypair serialization/deserialization in both trusted and untrusted programs. We re-organize ocall related interfaces and provide them in a new crate sgx_libc with a bunch of new ocall functions. In addition, we port net2 to SGX. Please refer to release_notes for further details.

v1.0.4 Release

This version supports Rust nightly build (nightly-2018-10-01) in the master branch and the most recent stable build (stable-2018-09-25) in the rust-stable branch. It supports the latest Intel SGX SDK v2.3.1 and Ubuntu Linux 18.04. It now contains further third party libraries including: bit-vec, chrono, erased-serde, fxhash, nan-preserving-float, num-bigint, quick-error, raft-rs, time, webpki-roots, and yasna. Some third party libraries, like untrusted, parity-wasm and lazy-static, are removed because they support no_std and can be used directly from crates.io. We strongly recommend developers upgrade to v1.0.4 and use the most recent Rust release to build it due to the Security advisory for the standard library. Please refer to release_notes for further details.

v1.0.1 Release

This version supports the Rust nightly build (nightly-2018-07-16) in master branch and the most recent Rust stable build (stable-2018-07-10). And it supports the latest Intel SGX SDK v2.2. New third party libraries include: bytes, http, iovec, rust-crypto, rust-fnv and rust-threshold-secret-sharing. New code sample 'secretsharing' and 'rust-threshold-secret-sharing' is provided by @davidp94. Please refer to release_notes for further details.

v1.0.0 Release

We proudly announce v1.0.0 of rust-sgx-sdk! We port Parity's Webassembly Interpreter to Intel SGX and provide a full functional in-enclave wasmi sample, and a sample solution of two-party private-set-intersection resisting side-channel attacks! From this version, we start to support most recent stable branch of Rust instead of nightly for better stability and future production use. Thus, the stable branch of v1.0.0 supports the most recent Rust stable toolchain (1.26.0 stable-2018-05-07), while the master only supports Rust nightly toolchain of nightly-2018-04-11. Please refer to release_notes for further details.

v0.9.8 Release

This version provides security updates regards to recent Spectre attacks in Intel SGX, and supports Rust stable (2018-03-01) (in branch named 'rust-stable'). It contains support of Intel SGX SDK 2.1.2 and a series of API functions to stop speculative execution on demand. In addition, we provide a ported version of rust-protobuf v1.4.4. Please refer to release_notes for further details.

v0.9.7 Release

This version provides a new namespace: sgx_tstd::untrusted, including sgx_tstd::untrusted::fs sgx_tstd::untrusted::time and sgx_tstd::untrusted::path, providing supports to operation to ocalls in a untrusted namespace. The untrusted namespace is always enabled no matter untrusted_* is set or not. We urge the developers to use the sgx_tstd::untrusted namespace to port their crates, instead of using the untrusted_ series of features. Also, we renamed the untrusted_net feature to net for feature name unification. Please refer to release_notes for further details.

Run Rust SGX applications in Mesalock Linux

MesaLock Linux is a general purpose Linux distribution which aims to provide a safe and secure user space environment. Now we can run Rust SGX applications in Mesalock Linux within a few steps. Please refer to the tutorial for details.

Requirement

Ubuntu 16.04 or 18.04

Intel SGX SDK 2.5 for Linux installed

Docker (Recommended)

Configuration

The docker image now supports Intel ME. If you need it, please refer to the sgxtime readme for instructions.

Native without docker (Not recommended)

Install Intel SGX driver and SDK first. And refer to Dockerfile or stable branch Dockerfile to setup your own native Rust-SGX environment.

Using docker (Recommended) without ME support

  • As of v1.0.7, we provide 4 docker images: baiduxlab/sgx-rust:1604-1.0.7 baiduxlab/sgx-rust:1804-1.0.7 baiduxlab/sgx-rust-stable:1604-1.0.7 baiduxlab/sgx-rust-stable:1804-1.0.7. The latest tag pins on baiduxlab/sgx-rust:1604-1.0.7.

First, make sure Intel SGX Driver 2.5 is installed and functions well. /dev/isgx should appear.

Second, pull the docker image. If you'd like to work on stable branch of Rust and rust-stable branch of this SDK, please pull baiduxlab/sgx-rust-stable instead.

$ docker pull baiduxlab/sgx-rust

Third, start a docker with sgx device support and the Rust SGX SDK.

$ docker run -v /your/path/to/rust-sgx:/root/sgx -ti --device /dev/isgx baiduxlab/sgx-rust

Next, start the aesm service inside the docker

root@docker:/# LD_LIBRARY_PATH=/opt/intel/libsgx-enclave-common/aesm /opt/intel/libsgx-enclave-common/aesm/aesm_service &

Finally, check if the sample code works

root@docker:~/sgx/samplecode/helloworld# make

root@docker:~/sgx/samplecode/helloworld# cd bin

root@docker:~/sgx/samplecode/helloworld/bin# ./app

Build the docker image by yourself

Make sure Intel SGX SDK is properly installed and service started on the host OS. Then cd dockerfile and run docker build -t rust-sgx-docker -f Dockerfile.1604.nightly . to build.

Use simulation mode for non SGX-enabled machine (includes macOS)

Intel provides a simulation mode so you can develop on regular machines, by building the enclave app using the libraries sgx_urts_sim, lsgx_uae_service_sim, sgx_trts_sim, sgx_tservice_sim.

First, pull the docker image. If you'd like to work on stable branch of Rust and rust-stable branch of this SDK, please pull baiduxlab/sgx-rust-stable instead.

$ docker pull baiduxlab/sgx-rust

Second, start a docker with the Rust SGX SDK.

$ docker run -v /your/path/to/rust-sgx:/root/sgx -ti baiduxlab/sgx-rust

But when building any sample code, set the SGX_MODE to SW in Makefile.

root@docker:~/sgx/samplecode/helloworld# vi Makefile

Replace SGX_MODE ?= HW with SGX_MODE ?= SW

or run export SGX_MODE=SW in your terminal.

Finally, check if the sample code works

root@docker:~/sgx/samplecode/helloworld# make

root@docker:~/sgx/samplecode/helloworld# cd bin

root@docker:~/sgx/samplecode/helloworld/bin# ./app

If not set, you could get an error:

Info: Please make sure SGX module is enabled in the BIOS, and install SGX driver afterwards.
Error: Invalid SGX device.

Documents

The online documents for SDK crates can be found here.

We recommend to use cargo doc to generate documents for each crate in this SDK by yourself. The auto generated documents are easy to read and search.

Sample Codes

We provide eighteen sample codes to help developers understand how to write Enclave codes in Rust. These codes are located at samplecode directory.

  • helloworld is a very simple app. It shows some basic usages of argument passing, Rust string and ECALL/OCALLs.

  • crypto shows the usage of crypto APIs provided by Intel SGX libraries. It does some crypto calculations inside the enclave, which is recommended in most circumstances.

  • localattestation is a sample ported from the original Intel SGX SDK. It shows how to do local attestation in Rust programming language.

  • sealeddata sample shows how to seal secret data in an enclave and how to verify the sealed data.

  • thread sample is a sample ported from the original Intel SGX SDK, showing some basic usages of threading APIs.

  • remoteattestation sample shows how to make remote attestation with Rust SGX SDK. The sample is forked from linux-sgx-attestation and credits to Blackrabbit ([email protected]). The enclave in Rust is shipped in this sample and Makefiles are modified accordingly.

  • hugemem sample shows how to use huge mem in SGX enclave. In this sample, we allocate reserve 31.75GB heap space and allocate 31.625GB buffers!

  • file sample shows how to read/write files in SGX enclave.

  • hello-rust is the helloworld sample writtin in pure Rust.

  • backtrace is a sample showing how to enabling backtrace mechanism inside the enclave.

  • unit-test shows the way of writing unit tests and conduct unit testing.

  • zlib-lazy-static-sample shows how to use ported third party crates inside enclave.

  • machine-learning shows how to use rusty-machine for machine learning inside Intel SGX enclave.

  • tls contains a pair of TLS client/server runs perfectly in SGX enclave!

  • sgxtime shows how to acquire trusted timestamp via Intel ME. Please refer to this instruction for detail.

  • protobuf shows how to use the ported rust-protobuf to pass messages to the enclave using protobuf. Please install protobuf-compiler by apt-get install protobuf-compiler and protobuf-codegen by cargo install protobuf-codegen --vers=2.0.3 before compiling this sample.

  • wasmi shows how to pass WebAssembly test suites using the ported WebAssembly interpreter.

  • psi is a prototype solution of the Private-Set-Intersection problem.

  • secretsharing shows the usage of Shamir sharing in Rust-SGX environment (provided by @davidp94).

  • switchless shows the usage of latest "switchless" execution model provided by intel. Please pay attention to the Makefile and the position of link flag "-lsgx_tswitchless".

  • mutual-ra provides remote attestation based TLS connection between SGX enclaves. See the readme for details.

  • ue-ra provides remote attestation based TLS connection between an untrusted party and one SGX enclave. See the readme for details.

  • sgx-cov shows how to use lcov with Rust SGX enclave to generate code coverage report. See the readme for details.

  • tcmalloc shows how to link Rust-SGX enclave with tcmalloc (provided by Intel SGX SDK), and test its performance with different kinds of workload.

Tips for writing enclaves in Rust

Writing EDL

  • For fixed-length array in ECALL/OCALL definition, declare it as an array. For dynamic-length array, use the keyword size= to let the Intel SGX knows how many bytes should be copied.

ECALL Function Naming

  • Add #[no_mangle] for every ECALL function.

Passing/returning arrays

  • For dynamic-length array, the only way is to use raw pointers in Rust. There are several functions to get/set data using raw pointers such as offset method. One can also use slice::from_raw_parts to convert the array to a slice.

  • For Fixed-length array, the above method is acceptable. And according to discussions in issue 30382 and issue 31227, thin-pointers (such as fixed-length array) are FFI-safe for now, but undocumented. In the sample codes, we use fixed-length arrays for passing and returning some fixed-length data.

License

Baidu Rust-SGX SDK is provided under the BSD license. Please refer to the License file for details.

Authors

Ran Duan, Long Li, Shi Jia, Yu Ding, Yulong Zhang, Yueqiang Cheng, Lenx Wei, Tanghui Chen

Baidu X-Lab Logo

Acknowledgement

Thanks to Prof. Jingqiang Lin for his contribution to this project.

Contacts

Yu Ding, [email protected]

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Rust SGX SDK provides the ability to write Intel SGX applications in Rust Programming Language.

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