It sounds like you're working on a secure local network synchronization application using Python, which involves several key components: service discovery, secure pairing through X25519 key exchange, and a REST API for data sync. Let's break down the main parts of your implementation:
Service Discovery
You've implemented a simple service discovery mechanism using UDP broadcast messages. This allows devices to find each other on the local network without relying on external services like mDNS or Bonjour.
Key Points:
- UDP Broadcast: Devices periodically send out "ping" messages to discover others.
- Response Handling: When a device receives a ping, it responds with its own service information (e.g., IP address and port).
- Peer List Management: The application maintains an internal list of discovered peers.
Secure Pairing
The pairing process ensures that only trusted devices can communicate securely. This involves:
- X25519 Key Exchange: Devices exchange public keys to establish a shared secret.
- PIN Verification: A simple 6-digit PIN is used to authenticate the key exchange.
Key Points:
- Ephemeral Keys: Each pairing session uses temporary X25519 keys that are
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Ali NematiWritten by Ali
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