Privacy at SILO.CAT
Your files are encrypted before they ever leave your device - only you hold the keys. Without the encryption key, no one can decrypt your files, not even us.
We simply don’t have what we cannot give. Lose your keys, and the files are gone forever — there’s no recovery, no backdoors, no exceptions.
Your File's Privacy Lifecycle
| Stage | What Happens | Who Has Access |
|---|---|---|
| 📁 On Your Device | Your file is encrypted in your browser using ChaCha20 before upload. You hold the encryption key. | Only You |
| 🚀 Upload in Progress | Encrypted file (or chunks) are transmitted to our servers. Large files are split into chunks, each salted independently. | Only Encrypted Data Visible to Us |
| ☁️ Cloud Storage | Encrypted files or chunks are stored across multiple silos using Backblaze and Cloudflare. Salts and nonces needed for decryption are stored separately. | We store encrypted data; no access to your original file |
| ⬇️ Download Process | Your encrypted file or chunks are fetched by the recipient. They must provide the correct encryption key to decrypt. | Only Encrypted Data Transmitted |
| 🔓 Decryption | Decryption happens in the recipient’s browser using the key. Without the key, files cannot be opened — not by us, not by anyone. | Only the Recipient with the Key |