HyFabric
Now available in Cove, our new app for Mac

FABRIC

The HyFabric transport protocol. Many lanes, one session. Erasure-coded across paths, attested with post-quantum signatures, and shaped to look like everything but a VPN.

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Live demo

FABRIC, in your hands.

Tap the power button, switch tabs, test a rule. Everything here is simulated and runs entirely in your browser.

Interactive demo
HYFABRICOFF
Off · tap ⏻ to connect
38.2 GB of 100 GB23d left

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The powers

Built to survive hostile networks.

Every capability carries an honest status: what ships in Cove today, what's built in the engine, and what's still ahead.

Engine-ready

Cross-path erasure coding

Each block is split into data and parity shards and striped across lanes. Lose a lane or a chunk of packets and the block still rebuilds, with no retransmit. Parity adapts to measured loss.

Block · 4 data + 2 parity…

Click a lane to kill it. Shards restripe across survivors and the block still rebuilds with zero retransmit. Outlined cells are parity.

Parity shards
2
Live lanes
4 / 4
Blocks rebuilt
0/0
Retransmits
0

Parity adapts to measured loss.

Engine-ready

Switchable camouflage

Wrap traffic as web, API or DNS-style traffic and swap modes mid-session.

Camouflage · live switch
H3
LEN
DATA
DATA

Looks like HTTP/3. Switchable mid-session.

Live in Cove

Post-quantum attestation

Sessions are bound by both a classical and a post-quantum (FIPS 204 ML-DSA) signature, with replay protection and automatic key rotation.

Dual attestation · classical + post-quantum
  1. 1
    Client hello
    Session request with a fresh identity
  2. 2
    Challenge
    Bound to this server and this session
  3. 3
    Ed25519 signature
    Classical signature
  4. 4
    ML-DSA signature
    Post-quantum signature (FIPS 204)
  5. 5
    Verified
    Both must verify, with replay protection
Engine-ready

Auto-detour

If UDP is blocked, the session collapses onto TCP-based carriers instead of dying.

Auto-detour
QUIC / UDP35%
Reliable UDP35%
TLS + WebSocket15%
TCP / TLS15%

Traffic is spread by predictive scheduling. Illustrative split.

Engine-ready

Stealth pacing

Profile-matched timing, jitter and cover frames make flows resemble video, browsing or bulk traffic.

Stealth pacing · traffic profiles
Steady burstsdatachaff
Roadmap

Still ahead

  • → Non-QUIC listener wiring on the server
  • → MASQUE lane
  • → Per-lane wire camouflage for non-QUIC lanes
  • → gRPC and WebRTC lanes
How it compares

Capabilities, side by side.

CapabilityFABRICHysteria 2VLESS / REALITY
Cross-path FEC multipath✓——
Post-quantum attestation✓——
Switchable camouflage modes✓Salamander obfsREALITY (TLS)
Stealth traffic pacing + chaff✓——
Concurrent multi-lane session✓——
On-device ML path advisor✓——

Capability comparison from public protocol designs, not benchmarks. FABRIC items vary in shipping status; see the badges above.

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