SecureDeliver

01_SECURE // one-time delivery

Send it once.
Then it's gone.

Encrypted in your browser with quantum-resistant AES-256 before anything leaves your device. Your recipient opens it once, and the server deletes it the moment it's downloaded.

  • AES-256-GCM
  • HKDF-SHA-512
  • Zero-knowledge
  • One-time link
  • Up to 300 MB
  • No accounts · no trackers
Optional if you attach a file.0 / 100,000
Attachment
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One file, up to 300 MB. Zip multiple files first.

01_ENCRYPT

Locked on your device

A fresh 256-bit key is generated in your browser. Your message and file are encrypted with AES-256-GCM in 4 MB chunks before upload. We only ever receive ciphertext.

10_DELIVER

Key stays in the link

The key lives after the “#” in the link, a part browsers never send to servers. Add a password for a second factor, hardened with 600,000 rounds of PBKDF2.

11_DESTROY

Opened once, then deleted

The first person to unlock it gets it; everyone after sees “already opened.” The encrypted data is deleted from the server as soon as the download completes.

100_QUANTUM

Built for the post-quantum era

No public-key crypto in the data path, so there's nothing for Shor's algorithm to break. AES-256 and SHA-512 keep a 128-bit-plus margin even against Grover's algorithm.