Enclosed

Enclosed is a web‑based utility that lets users create and share notes and file attachments that are encrypted on the client side before they ever reach the server. Encryption uses AES‑GCM with a 256‑bit key derived via PBKDF2, and the server stores only ciphertext, so it has zero knowledge of the content. Users can protect a note with a password, set a time‑to‑live expiration, and optionally have the note self‑destruct after it is read.

The interface is minimalistic and responsive, supporting dark mode and multiple languages, and it offers optional email/password authentication for managing notes. A command‑line interface is also provided for creating notes from a terminal. The application is open source under the Apache‑2.0 license, can be self‑hosted through Docker, and is designed for low environmental impact.

Enclosed targets individuals or teams that need a simple, secure way to exchange confidential text or files without relying on third‑party services that can access the data. Its self‑hostable nature and configurable security options make it suitable for private deployments as well as public use via the hosted demo.