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03 / Private communication

Open Shortcut Chat

Web project · Ongoing development

An invitation-based chat application with browser-side encryption and Apple Shortcuts messaging support.

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Project roomInvitation-only conversation
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From a shortcut.

A small message.
A simpler workflow.

Interface concept
Interface concept — no private messages or live room are shown.

Technical architecture

  • A browser frontend handles room invitations and AES-GCM message encryption.
  • Room keys are passed in URL fragments; the backend stores message ciphertext and initialization vectors.
  • An Express API and SQLite database manage rooms and bounded message history.

Current work & outcomes

  • Invitation-based rooms without a sign-up flow.
  • Browser-side encryption, message polling, and conversation export.
  • A public web entry point and a workflow designed for Apple Shortcuts.

Development status

Implementation details describe the current project, not an independent security audit. Anyone receiving a room invitation with its key can access that room. The illustration below is a concept, not a live conversation screenshot.