End-to-End Encryption
Your notes are encrypted on your device before they ever leave it. Not even we can read your data.
How It Works
Zettelcrypt uses AES-256-GCM encryption with keys derived from your password using Argon2id. Your password never leaves your device — only encrypted data is transmitted and stored on our servers.
Zero-Knowledge Architecture
We operate on a zero-knowledge principle: our servers store only encrypted blobs. We cannot decrypt, read, or analyze your notes. Even in the event of a server breach, your data remains protected.
Key Management
Your encryption key is derived from your password each time you log in. There are no recovery keys or backdoors — if you forget your password, your data cannot be recovered. This is by design to ensure maximum security.
