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by xmas123
105 days ago
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I built Entangl, an open-source post-quantum A2A (agent-to-agent) communication protocol for AI agents. The problem: agents are negotiating contracts, executing transactions, and passing sensitive payloads between themselves. All of that traffic is protected by RSA and ECDH — algorithms that Shor's algorithm breaks on a sufficiently large quantum computer. Nation-state adversaries run harvest-now-decrypt-later attacks today. What Entangl does:
- CRYSTALS-Kyber1024 (NIST FIPS 203) replaces RSA/ECDH key exchange
- CRYSTALS-Dilithium5 (NIST FIPS 204) replaces ECDSA signatures
- Fresh KEM per message — forward secrecy, no session keys to steal
- Each agent has a DID tethered to a human owner for accountability
- Optional BB84 QKD layer via Cirq — eavesdroppers detectable at ~25% QBER
- Routing server forwards encrypted envelopes but cannot read them Demo: two agents negotiate a GPU compute deal in 1.4s over a live WebSocket server. Rogue agents blocked at registry level. Tampered ciphertext caught by signature check. Stack: Python 3.11, Cirq 1.3, TensorFlow Quantum 0.7.2, FastAPI, NVIDIA RTX A1000. Feedback welcome — especially on the per-message KEM vs. session key with periodic rotation tradeoff. |
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