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
Ready to share securely?
Start UploadingFor legal details, please consult our Privacy Policy and Terms of Service.