Скачать или смотреть 5 SECRETS to JWT Authentication Success

How JWT Works: Step-by-Step Explanation #jwtauthentication #programming #java

JSON Web Tokens (JWTs) provide a stateless, secure way to transmit identity and authorization data between a client and server. Here’s a step-by-step breakdown of how JWT authentication typically works:
1️⃣ User Logs In
The user enters their credentials (e.g., username and password) on the login page and submits them to the authentication server.

2️⃣ Server Verifies Credentials
The server checks the credentials against the database.
✅ If valid, the server generates a JWT containing user data (e.g., user ID, role) and optional metadata (like token expiration time).

3️⃣ JWT is Sent to the Client
The server signs the JWT using a secret (HMAC) or a private key (RSA) and sends the token back to the client (usually in the response body or HTTP header).

4️⃣ Client Stores the Token
The client (typically a web or mobile app) stores the JWT:

In localStorage or sessionStorage (for SPAs)
Or in memory for extra security
5️⃣ Client Sends JWT with Each Request
For all future API requests, the client includes the JWT in the Authorization header:



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