Enarx 0.4.0: Fort of Dhat al-Hajj

Enarx 0.4.0: Fort of Dhat al-Hajj
Source: Wikipedia Heritage Commission

Not Production Ready

This release is a developer-only, preview release. It is not production ready. We hope that you will experiment with it to see the progress we are making.

What's Changed

  • Improved TLS support
  • Improved SGX with Enclave Dynamic Memory Management (EDMM) / SGX2 platform support
  • Support legacy CPUs using KVM backend
  • Programming language support:
  • Experimental programming language support:
  • User experience improvements
    • Added sub-commands for downloading and caching VCEK for AMD SEV-SNP hardware
    • Added sub-command for registering SGX hardware with Intel's key server
  • Migration to cargo's binary dependencies for sub-crates
  • Various bugfixes

Breaking Changes

  • For SGX 2 support, custom kernel has to be installed from here.
  • SGX support deprecated. Hardware with SGX 2 support, required to use SGX backend.
  • AESMD w/ PCCS daemon connection needs to be running.


  1. A supported hardware platform
  2. Rust nightly
  3. A custom kernel for non-KVM backends:
    • For the SGX backend:
      • Hardware with SGX 2 support required. SGX support deprecated.
      • Custom kernel has to be installed from here.
    • For the SEV-SNP backend:
      • Hardware with SEV-SNP. SEV support deprecated.
      • Custom kernel has to be installed from here.

For build instructions, see our build documentation.


For installation instructions please see our page on Installing Enarx.

Known (Temporary) Issues

  • Logging is forcibly enabled and outputs to standard error
  • Incomplete WASI support
  • Missing support for unmap, remap and mprotect for SGX2
  • Custom kernel required for SGX.


A hearty thanks to everyone who has contributed over the last few years. This release would not be successful without you!

@MikeCamel @npmccallum @haraldh @connorkuehl @lkatalin @mbestavros @wgwoods @axelsimon @ueno @ziyi-yan @ambaxter @squidboylan @blazebissar @michiboo @matt-ross16 @jyotsna-penumaka @steveeJ @greyspectrum @rvolosatovs @lilienbm @CyberEpsilon @kubkon @nickvidal @uudiin @zeenix @sagiegurari @platten @greyspectrum @bstrie @jarkkojs @definitelynobody @rjzak @Deepansharora27 @mayankkumar2 @moksh-pathak

Full Changelog: https://github.com/enarx/enarx/compare/v0.3.0...v0.4.0