Secure documents.
Protected with End-to-End Encryption.
Foxcolab Docs is a production-grade markdown workspace designed for extreme privacy. Real-time typing, offline storage, and document keys are secured at the hardware and browser sandbox layers.
🔒 Zero-Knowledge Warning: All document modifications are synced live over state vectors encrypted using AES-256-GCM.
1. Algorithm Design
This spec covers the multi-level key derivation algorithm...
Secure collaborative documents without compromises
Foxcolab Docs combines the convenience of cloud workspaces with the absolute cryptographic privacy of client-side encryption.
Zero-Knowledge E2EE
All document content and folder structures are encrypted using client-side keys. We never have access to your keys or readable files.
Real-Time State Sync
Seamless real-time editing powered by Yjs CRDTs. Collaborative updates are securely synchronized and decrypted in-memory.
Offline Workspace
Snapshots are cached in your local IndexedDB. Keep working offline and synchronize when reconnected without risking data loss.
Multi-Level Cryptographic Architecture
Your identities, workspaces, and files are mapped using distinct keys client-side to isolate data breaches.
Zero-Knowledge Document Keys
Every document has a unique, random 256-bit symmetric key. This document key encrypts title, content state, and comments. It is never stored in plaintext on our database.
Master Identity Key (MIK)
Derived using PBKDF2 hashing directly from your master password. Used as a master key to wrap and encrypt your Workspace key and Document keys before uploading them.
Asymmetric Key Wrapping
Collaborative sharing uses Libsodium asymmetric key exchange. When sharing a document, your document key is securely encrypted using the recipient's public key.
Frequently Asked Questions
Ready to secure your docs?
Create an account or start immediately. Protect your thoughts, documentation, code specs, and tasks behind bulletproof browser-level E2EE keys.