Kryptur Research presents a layered platform that bonds Multipath TCP transport, hybrid Quantum Key Distribution with post-quantum cryptography, and laboratory Bell-state path intelligence — keeping sessions alive across satellite, cellular, and fiber.
Single-path TCP fails when heterogeneous access degrades. This work bonds three UDP laboratory paths — Starlink, 5G, and fiber — under MPTCP-style scheduling, with QKD where a quantum channel exists and NIST PQC (ML-KEM / ML-DSA) otherwise, plus a cautious Bell-state path picker for traffic intelligence.
Live lab console — bonding status, Bell-state path pick, and BB84 session protection.
View project →Quantum Multipath Bonding — MPTCP, hybrid QKD/PQC, and Bell-state path intelligence on Zenodo.
View project →Data, control, security, and intelligence planes with independent graceful fallbacks.
View project →Laboratory Starlink, 5G, and fiber UDP paths from the CDNER-X bonding engine.
View project →Decoy-state QKD where available; FIPS 203/204 ML-KEM and ML-DSA otherwise.
View project →| Plane | Responsibility | Graceful fallback |
|---|---|---|
| Data | Forwarding on the hot path | Remaining interface continues as ordinary IP |
| Control | MPTCP lifecycle and scheduling | Weighted round-robin or lowest-RTT |
| Security | QKD where available; PQC elsewhere | ML-KEM / ML-DSA only |
| Intelligence | Forecast and anomaly scores | Freeze last known-good weights |
| Name | Kind | Bind | Target |
|---|---|---|---|
| Starlink | satellite | 127.0.0.1:9001 | 127.0.0.1:10001 |
| 5G | cellular | 127.0.0.1:9002 | 127.0.0.1:10002 |
| Fiber | terrestrial | 127.0.0.1:9003 | 127.0.0.1:10003 |
| Item | Target / role |
|---|---|
| Wavelength | 1550 nm |
| Protocol | Decoy-state BB84 · abort ~QBER > 11% |
| FIPS 203 ML-KEM | Key encapsulation when QKD is absent |
| FIPS 204 ML-DSA | Signatures and authentication (ML-DSA-65 default) |
| Item | Value |
|---|---|
| Algorithm | bell_state_path_optimization |
| Shots | 1024 |
| Count of 00 / 11 | 479 / 545 |
| Selected path | Fiber |
| Setting | Bonded mix | Security note |
|---|---|---|
| Maritime | LEO, GEO, coastal cellular | Continuity across beam and coastal hand-over |
| Remote mining | Satellite, 4G, site mesh | Hybrid QKD/PQC for operations data |
| Disaster response | Whatever links remain | Protect medical and command traffic |
| Enterprise backup | Fiber, 5G, satellite | Shift load before the primary path fails |
Raja Ram M. — Main author, R&D lead, corresponding author (Kryptur OU / Krypur Quantum R&D). Contributors: Muskan S. (Data T), Vipul Jain (AE Quantum / DCN), Kalinga Swain (Zius). Data manager: Borel Sigma Data Center.