Post-quantum encryption

Fileverse dDocs: the first post-quantum encrypted collaborative document editor

Fileverse dDocs (ddocs.new) is an open-source, end-to-end encrypted document editor and a private alternative to Google Docs. It is the first collaborative document editor fully secured by post-quantum cryptography, protecting files against future quantum computers and AI breakthroughs.

Fileverse Intern

09 Oct 2026 — 2 min read

What is Fileverse dDocs

Fileverse dDocs (ddocs.new) is an open-source, privacy-enhancing alternative to Google Docs. It matches Google Docs on features, with the same editing and collaboration experience, plus a few things the big tech app does not offer: offline editing, no account needed to get started, and custom color themes like dark mode.

The real difference is privacy and data ownership guarantees. Everything written in dDocs is end-to-end encrypted, so no one can read or access the content except the people given permission, not even Fileverse (the company behind the app). Most editors, Google Docs included, are not encrypted this way, which means the provider can access the content, leaving sensitive data exposed to leaks, breaches, or unauthorised access.

Why post-quantum encryption matters

Encryption protects documents from today's computers. Quantum computers could eventually break much of the public-key cryptography that the internet relies on today. We don't know exactly when that will happen, but the risk already exists.

Encrypted data captured today can be stored and unlocked later once the hardware exists, a tactic known as "harvest now, decrypt later." Documents are exactly the kind of thing that needs to stay private for years, so a file written in an ordinary editor today could be exposed years after it was written.

That is one of the gaps that Fileverse dDocs closes. Everything written on dDocs is now post-quantum encrypted, using encryption approaches (i.e., X-Wing over ML-KEM-768 and X25519) designed to hold up against both today's classical computers and tomorrow's quantum computers. Documents are encrypted on the device, and the keys stay with the person who wrote them. No one else can open them, not even a future quantum computer.

Quantum computing isn’t the only thing encryption has to plan for. Researchers are now using AI to probe cryptographic algorithms faster than ever and it is difficult to predict what they will be able to find or break. That is one reason why Fileverse dDocs uses a hybrid encryption scheme. X-Wing pairs ML-KEM-768, a newer post-quantum algorithm, with X25519, which has been in wide use for years. The two rest on unrelated math, so an attacker would need to break both to decrypt a document. If a flaw is ever found in one of them, with AI’s help or without it, the other still protects your files. Nobody can guarantee an algorithm will hold up forever, so we don’t rely on just one.

A privacy-enhancing document editor built to outlast the next era of computing!

To try it just type ddocs.new in your browser’s search bar and start writing <3