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Android

Version 2.1.0

  • Released November 8, 2026

Added

  • Set up app fully (enroll with C2, register with SKA-P, and download tunnel configs) by scanning single QR code.
  • Diagnostics screen that shows detailed connectivity status.
  • Support for using client credentials with SKA-P registration.

Changed

  • Updated UI look and feel.
  • Re-wrote many app internals.
  • Now performs SKA-P key rotations every 5 minutes while tunnel is up.
  • Now reports SKA-P device UID and other invertory properties to C2.
  • Upgraded to Arqit SKA Platform™ Kotlin/Java SDK version 26.06.

Removed

  • Removed support for user-installed CA certificates.

Fixed

  • Fixed bottom portion of some screens not being visible on devices with small screens.

Version 2.0.1

  • Released April 2, 2026

Changed

  • Redesigned create tunnel screen layout
  • Improved button styling and consistency across dialogs
  • About screen is now scrollable on smaller displays

Fixed

  • Fixed button height mismatch on the registration screen
  • Fixed About screen content being cut off on smaller devices

Version 2.0.0

  • Released March 24, 2026

Important

Crux is a new app that replaces Crux VPN. This is a new Play Store listing — existing Crux VPN users will need to install Crux separately.

Added

  • New app identity — rebranded from Crux VPN to Crux
  • 16KB memory page size support for newer Android devices
  • Proprietary licensing (EULA)

Changed

  • New package name (com.sirius.crux) — separate debug and release installs
  • Upgraded build system: AGP 9.1, Kotlin 2.2, Gradle 9.3, NDK r28, target API 36
  • Upgraded WireGuard native dependencies (wireguard-go, wireguard-tools)
  • Rebuilt liboqs from source for improved compatibility and smaller binary size
  • Updated SKA device identity to "Crux for Android by Sirius"
  • Updated GitHub Actions to v4 for CI/CD

Fixed

  • Cherry-picked upstream WireGuard bug fixes
  • Applied upstream UI/UX improvements
  • Resolved Kotlin build warnings
  • Removed unused language translations and dead code
  • Removed upstream WireGuard updater and donation code

Version 1.3.0

  • Released January 26, 2026

Added

  • Advanced registration option for custom SKA domains
  • Automatic migration of existing registrations when updating from version 1.2.1 or older

Changed

  • Registration flow updated
  • Simple mode is now the default registration method
  • Advanced mode replaces the previous URL based registration
  • Updated default SKA tenancy settings

Fixed

  • Resolved an issue where authentication was not restored after app restarts or updates
  • Fixed background heartbeat not restarting for already registered devices
  • Improved reliability of re-authentication when the tunnel state changes

Version 1.2.1

  • Released September 3, 2025

Fixed

  • Fixed registration URL parsing for custom SKA-EC URLs.

Version 1.2.0

  • Released August 29, 2025

Added

  • Support for custom URLs when registering with Arqit SKA-Platform™

Changed

  • Complete UI redesign for easier use and better alignment with the Web UI
  • Field names adjusted for more consistent naming across platforms
  • App icon refreshed with a new design

Fixed

  • Crash related to log handling

Version 1.1.6

  • Released July 26, 2025

Added

  • Support for upcoming changes to Arqit SKA-Platform™ architecture.

Changed

  • Android 13 devices are now able to fully authenticate with Arqit SKA-Platform™, resolving a prior issue related to Java versioning.

Version 1.1.5

  • Released May 14, 2025

Added

  • Allows the use of user certificates.

Version 1.1.4

  • Released May 8, 2025

Added

  • Biometrics are now required in order to reveal the private key.

Changed

  • A "double opt-in" confirmation is now implemented when deleting a tunnel.
  • Additional editable fields for Arqit SKA-Platform™ configuration.

Version 1.1.1

  • Released May 7, 2025

Changed

  • Improved performance and readability of application logs.

Version 1.1.0

  • Released April 28, 2025

Added

  • Users can now register their device with Arqit SKA-Platform™ directly through the app.
  • The app pulls and displays relevant information from Arqit SKA-Platform™ SKA.
  • Displays time remaining until the next WireGuard handshake.
  • Session stats now include received and sent traffic.
  • Added double opt-out flow for device de-registration with Arqit SKA-Platform™.

Changed

  • Tunnel creation is now disabled for devices without Arqit SKA-Platform™ support.

Version 1.0.0

  • Released April 16, 2025

  • Initial Release