1. Create your key on your device
Your passphrase is processed on your device first. Your raw passphrase is not sent to our servers.
How It Works
How NullBox Protects Your Files
Simple version: your files are encrypted first, then uploaded.
2. Encrypt before upload
Your files are encrypted before they leave your browser so storage only sees encrypted data.
3. Store safely in the cloud
Encrypted boxes are uploaded using temporary secure links with limited lifetime.
4. Open with your passphrase
When you open a box, your device recreates the key and decrypts the file locally.
Extra protection when available
When this feature is available, NullBox adds another layer of protection on top of standard encryption.