This guide will walk you through the process of implementing RS256 JWT authentication with Rust, using asymmetric keys (private and public keys) to ensure strong security. The API will be hosted on a high-performance Actix Web server and will store data in a PostgreSQL database.

This backend is built with Rust and Actix-web, powers a robust polling application. It supports Passkey Authentication (WebAuthn/FIDO2) and JWT-based secure access. Core features include poll management, real-time updates via SSE, and MongoDB integration for data storage. The backend ensures seamless user authentication, protected routes.