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Ghost Chain: Quantum-Resistant Hybrid Consensus

The "2" Strategy: Quantum Hardening

We are integrating Post-Quantum Cryptography (PQC) into the Substrate pallet to make Ghost Chain "Future-Proof".

⚖️ Hybrid PQC-Classical Signature Scheme

  • Primary: Crystals-Dilithium (NIST Round 3 Winner). Used for block finalization by the PoS committee.
  • Security: Level 5 (equivalent to AES-256).
  • PoW synergy: The PoW puzzle now includes a "PQC hash-check" where miners must solve a lattice-based challenge, making them partially resistant to future quantum-accelerated hashing (Grover's algorithm).

🛠️ Substrate Implementation

  • Added pqc_logic.rs to the workspace.
  • The committee signature verification will move from Ed25519 to Dilithium in the finalize_block phase.

Current Progress

  1. Drafted PQC signature wrapper.
  2. Integrate lattice-based difficulty adjustment into PoW logic.
  3. Benchmarking PQC signature verification in WASM.