CIA/e-voting-system
Alexis Bruneteau 6cd555a552 feat: Add transaction broadcasting between PoA validators
Problem: Votes were being submitted to one validator but not shared with
other validators, preventing them from being included in blocks.

Root cause: When a validator received a transaction via eth_sendTransaction,
it added it to its pending_transactions pool but did NOT broadcast it to
peer validators. Only blocks were being broadcast.

This meant:
- validator-1 receives vote → adds to pending_transactions
- validator-2 (responsible for next block) never receives the vote
- validator-2 can't include vote in block because it doesn't know about it
- Result: votes sit in pending queue forever

Solution:
- Add broadcast_transaction() method following same pattern as broadcast_block()
- Broadcast transaction to all known peers via /p2p/new_transaction endpoint
- Call broadcast on receipt of each transaction
- Peer validators receive and add to their pending_transactions pool
- All validators now have same pending transactions
- Any validator can create blocks with all pending transactions

The /p2p/new_transaction endpoint already existed, so validators can now
receive and process transactions from peers.

This fixes the issue where votes were submitted successfully but never
appeared on the blockchain.

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>
2025-11-07 17:00:14 +01:00
..

E-Voting System - Post-Quantum Cryptography

Système de vote électronique sécurisé avec cryptographie post-quantique hybride certifiée NIST FIPS 203/204.

🚀 Démarrer

# Lancer tous les services
docker-compose up -d

# Frontend: http://localhost:3000
# API: http://localhost:8000/docs
# Database: localhost:3306

🔐 Sécurité Post-Quantique

  • Signatures: RSA-PSS + ML-DSA-65 (Dilithium) - FIPS 204
  • Chiffrement: ML-KEM-768 (Kyber) + ElGamal - FIPS 203
  • Hachage: SHA-256 (quantum-resistant)
  • Approche hybride: Defense-in-depth

Voir .claude/POSTQUANTUM_CRYPTO.md pour les détails.

📁 Structure

.
├── docker/                 # Configuration Docker
├── src/
│   ├── backend/           # API FastAPI
│   ├── crypto/            # Cryptographie classique + PQC
│   └── frontend/          # Interface web
├── tests/                 # Tests unitaires
├── docker-compose.yml
└── README.md

🧪 Tests

pytest tests/ -v

🔑 Clés Cryptographiques

  • Génération: Clés hybrides RSA + Dilithium + Kyber à l'inscription
  • Stockage: Base de données sécurisée
  • Signatures: RSA-PSS + Dilithium sur chaque vote
  • Chiffrement: ML-KEM-768 (Kyber)

📊 Endpoints API

  • POST /api/auth/register - Inscription avec génération de clés PQC
  • POST /api/auth/login - Authentification JWT
  • GET /api/elections/active - Élection active
  • POST /api/votes/submit - Vote signé avec signatures hybrides
  • GET /api/elections/{id}/results - Résultats

Voir http://localhost:8000/docs pour API interactive.


Production-ready post-quantum e-voting system 🔐 MIT