Powered by Zama FHEVM

The Only File Sharing Where Permissions Are Encrypted Too

Most "private" storage encrypts your files but leaks who you share with. FileZ encrypts everything — files, metadata, and access control, using Fully Homomorphic Encryption.

Powered by Zama
On-Chain Verified
Client-Side Encryption

ENDORSED BY INDUSTRY LEADERS

"

Very nice! Heard several companies ask for something like this, basically using blockchains for access control to files that can't be stored onchain. This can definitely be a startup.

R

Rand Hindi

Founder & CEO, Zama

@randhindi

THE PRIVACY PROBLEM

"Encrypted" Doesn't Mean Private

Every decentralized storage solution encrypts files. But they all leak the same thing: who you're sharing with.

Traditional "Encryption"

  • Files encrypted, permissions in plaintext
  • Metadata reveals sharing relationships
  • Access control relies on trusted servers
  • Anyone can see who shares with whom

FileZ with FHE

  • Files AND permissions encrypted
  • Metadata is cryptographically hidden
  • Smart contract validates without seeing data
  • Only intended recipients can decrypt

CORE FEATURES

Privacy That's Mathematically Proven

Built on cryptographic primitives, not promises.

Client-Side AES-256

Files encrypted in your browser before upload. Keys never touch our servers.

FHE Key Sharding

Encryption keys split into 4 chunks, each encrypted with Fully Homomorphic Encryption.

On-Chain Access Control

Smart contract enforces permissions without ever seeing the decrypted keys.

Private Sharing

Share by re-encrypting key chunks for recipients. No metadata leakage.

IPFS Storage

Encrypted files stored on decentralized infrastructure. No single point of failure.

Instant Indexing

Subgraph-powered queries for fast file retrieval and sharing history.

USE CASES

Built for Sensitive Data

Any industry that needs true privacy, not just compliance theater.

Legal & Compliance

Share contracts, NDAs, and sensitive legal documents with opposing counsel or clients.

M&A docsNDAsCourt filings

Healthcare

Transfer medical records, imaging, and patient data between providers securely.

Patient recordsLab resultsImaging

Enterprise

Protect trade secrets, R&D files, and internal communications from competitors.

R&D filesStrategy docsIP

Web3 & DAOs

Manage treasury docs, governance proposals, and sensitive operational files.

TreasuryProposalsMultisig

HOW IT WORKS

Four Steps to True Privacy

01

Upload & Encrypt

Select your file. AES-256-GCM encryption happens entirely in your browser.

02

Store Securely

Encrypted file goes to IPFS. Key splits into 4 FHE-encrypted chunks on-chain.

03

Share Privately

Key chunks re-encrypted for recipient's wallet. Only they can ever decrypt.

04

Access & Verify

Recipient retrieves chunks, decrypts via FHE, downloads the original file.

256-bit

AES Encryption

4×64

FHE Key Chunks

100%

Client-Side

0

Trusted Parties

SECURITY & TRUST

Built for Enterprise. Secured by Math.

FileZ is built on battle-tested cryptographic infrastructure. Our security doesn't rely on promises — it's enforced by mathematics and verified on-chain.

On-Chain Verification

Smart contract deployed & verified on Ethereum

Powered by Zama

Industry-leading Fully Homomorphic Encryption

Zero Knowledge Architecture

We can't see your files or who you share with

Security Architecture

Your Browser

AES-256-GCM encryption happens here

Zama FHEVM

Keys encrypted with FHE on-chain

IPFS Storage

Encrypted files on decentralized storage

End-to-End Encrypted

Ready for True Privacy?

Join the future of file sharing where your permissions are as private as your files.