Powered by Sui BlockchainBeta

Your Files,
Otter-ly Safe

End-to-end encrypted file sharing bound to email identity.No accounts. No trust. No compromise.

Features

Security Without Compromise

Built from the ground up for a post-quantum world

Post-Quantum Ready

AES-256-GCM encryption ensures your files remain secure even against future quantum computers.

Identity-Bound Access

Only the intended recipient can decrypt files, verified through cryptographic identity proofs.

Gas Sponsored

Recipients don't need crypto to claim files. Senders pre-fund transaction costs.

Zero Knowledge

We never see your files or encryption keys. Everything happens client-side.

Seal Protocol

Encryption keys are wrapped using Seal, unlockable only with identity proofs.

Privacy First

Expired tickets are automatically deleted from the blockchain. No traces left behind.

Simple & Secure

How It Works

1

Upload & Encrypt

Drop your file. It's instantly encrypted in your browser with AES-256-GCM. The encryption key never leaves your device unprotected.

2

Set Recipients

Enter email addresses. Each recipient gets a unique claim link. Keys are cryptographically bound to their identity.

3

Verify Identity

Recipients prove ownership of their email address. This cryptographically unlocks the encryption key bound to their identity.

4

Download Securely

The proof unlocks the encryption key. The file decrypts locally and downloads. Only the intended recipient can access it.

Technology

Built on the Best

Cutting-edge blockchain technology with proven cryptographic standards

Sui Blockchain

Lightning-fast Layer 1 with parallel transaction execution and programmable transaction blocks.

Walrus Protocol

Decentralized blob storage with erasure coding for availability and redundancy.

Seal Protocol

Identity-bound encryption using cryptographic proofs for fine-grained access control.

Ready to Send Securely?

No account needed. Connect your wallet and start sharing in seconds.

Launch App
LutraLutra

Built on Sui · Stored on Walrus · Secured by Seal