Module auth 

JWT authentication and middleware. JWT Authentication and Middleware

This module provides authentication infrastructure for the A.R.E.S API, including JWT token generation/validation and Axum middleware.

Module Structure

• auth::jwt - JWT token encoding, decoding, and claims
• auth::middleware - Axum layers and extractors for authentication

Security Features

• Password Hashing: Uses Argon2id (memory-hard) for secure password storage
• JWT Tokens: HS256 signed tokens with configurable expiration
• Claims: Standard JWT claims plus custom user data

Usage

Token Generation

use ares::auth::jwt::{encode_jwt, Claims};

let claims = Claims::new(user_id, username, &config.jwt_secret, expiry_hours);
let token = encode_jwt(&claims, &config.jwt_secret)?;

Middleware

The AuthLayer middleware validates JWT tokens and injects Claims into the request extensions:

use ares::auth::middleware::AuthLayer;

let app = Router::new()
    .route("/protected", get(handler))
    .layer(AuthLayer::new(jwt_secret));

Extracting Claims in Handlers

async fn protected_handler(
    Extension(claims): Extension<Claims>,
) -> impl IntoResponse {
    format!("Hello, {}!", claims.sub)
}

Configuration

Configure via ares.toml:

[server]
jwt_secret = "your-secret-key"  # Required, use a strong random value
jwt_expiry_hours = 24           # Token validity duration

Modules

jwt

JWT token generation, validation, and password hashing services.

middleware

Authentication middleware and extractors for protected routes.