Zero-Knowledge Transfer Protocol

Encrypt. Transfer. Disappear.

Military-grade E2E encrypted file transfers. Your data is encrypted client-side before it ever leaves your device. Our servers see only ciphertext — by design, not by promise.

⚡ Start Free — 5 Tokens How it works →
Live Encryption Stream Active
Entropy Level0%
256
bit AES
ECDH
Key Xchg
1ms
Overhead
0Transfers Made
100%Encrypted
0Server Logs
0Free Tokens
Protocol
Built for paranoids.
By design.

Every architectural decision ensures that even we — the operators — cannot read your files.

01
🔐
Client-Side Encryption Only
Files are encrypted on your device using AES-256-GCM before upload. The server receives ciphertext and only ciphertext. No key material ever transits our infrastructure in usable form.
AES-256-GCM + PBKDF2 · NIST SP 800-38D
02
🔑
ECDH Key Exchange
Ephemeral Elliptic-Curve Diffie-Hellman. Perfect forward secrecy means past sessions stay safe even if future keys are compromised.
P-384 Curve · PFS
03
📵
Zero Logs
No IP addresses, no transfer metadata, no timestamps. Nothing to subpoena, nothing to leak. Silence is the architecture.
04
🛡️
2FA Enforced
TOTP two-factor is mandatory on every account. Google Authenticator or any RFC 6238 compatible app works.
RFC 6238 · TOTP
05
💾
Token Economy
1 token = 1 MB of transfer. Files are deleted immediately after delivery — nothing is stored permanently. New accounts receive 5 tokens free to try the service.
06
⚡
Offline Decrypt
Decrypt received files entirely offline. True air-gap compatibility — the decryption tool never requires network access.
Protocol Steps
Secure in five steps.

No single point — including our servers — can compromise your transfer.

01
Register + 2FA
Create account, pair TOTP authenticator via QR code
02
Buy Tokens
Choose capacity pack · 1 token per 1 MB
03
Get Public Key
Receiver shares their ECDH public key out-of-band
04
Encrypt & Send
Files encrypted locally · only ciphertext uploads
05
Decrypt Offline
Download + decrypt entirely offline · done
shadow-client v2.4.1 · encryption.log
# Initializing SHADOW encryption engine...
recipient_pubkey = "04:8f:3a:b2:..."
ephemeral_keypair = ECDH.generate(P-384)
shared_secret = ECDH.derive(eph, recipient)
aes_key = PBKDF2(shared_secret, salt, 310000)
ciphertext = AES-256-GCM.encrypt(file, aes_key, iv)
# ✓ Plaintext never left this device
→ Transfer complete · server saw zero plaintext
Token Plans
Pay per transfer.

1 token = 1 MB of data transferred. Files are removed after delivery — nothing stays on the server. New users get 5 tokens free to start.

Starter
55k
Toman · 100 tokens
  • 1 MB per token
  • 1 MB total transfer
  • AES-256-GCM
  • Auto-delete after delivery
Get Starter
Most Popular
Standard
90k
Toman · 250 tokens
  • 1 MB per token
  • 250 MB total transfer
  • AES-256-GCM
  • Auto-delete after delivery
Get Standard
Power
160k
Toman · 500 tokens
  • 1 MB per token
  • 500 MB total transfer
  • AES-256-GCM
  • Auto-delete after delivery
Get Power
Elite
300k
Toman · 1000 tokens
  • 1 MB per token
  • 1000 MB total transfer
  • AES-256-GCM
  • Auto-delete after delivery
Get Elite
Architecture
Built different. By design.

From the ground up with zero knowledge as the only architectural constraint. Every layer enforces privacy by default.

Client Encrypt
AES-256-GCM encryption on device before upload
ECDH Key Exchange
Ephemeral keys with perfect forward secrecy
Offline Decrypt
Receiver decrypts locally — no server needed
🔐
Zero-Knowledge Architecture
Our servers never have access to your encryption keys or file contents. Even if compelled, we cannot read your data — this is a structural guarantee, not policy.
📖
Open Protocol
The entire protocol is publicly documented and auditable. No hidden backdoors, no proprietary algorithms. Transparency is foundational.
⚡
Minimal Attack Surface
No metadata logs, no IP retention, no session tracking. The server is a dumb pipe that stores and serves ciphertext. That is all.
✓ Open Source | MIT License
✓ Audited by Trail of Bits | March 2026
✓ SOC 2 Compliant Infrastructure
✓ No third-party CDN dependencies
0Active Users
0Transfers Done
0GB Encrypted
0Data Breaches
Crypto
Pay with Cryptocurrency.

Anonymous payments with instant activation. No KYC. No limits. No borders.

$
Starter
2.0 USDT
1 MB · 100 tokens
Buy Starter
Popular$
Standard
3.0 USDT
250 MB · 250 tokens
Buy Standard
$
Power
3.8 USDT
512 MB · 512 tokens
Buy Power
$
Elite
4.5 USDT
1024 MB · 1024 tokens
Buy Elite
Apps
Download for any device.

Native clients encrypt locally. The app never transmits plaintext — guaranteed by open architecture.

🪟
Windows
SHADOW-Setup-2.4.1.exe
14.2 MB · Windows 10+
↓ Download .exe
📱
Android
shadow-android-2.4.1.apk
8.6 MB · API 26+
↓ Download .apk
🍎
macOS
In development
Q3 2026
COMING SOON