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# jwt

2 posts

Spring Security — JWT Authentication from Scratch

Implement JWT authentication in Spring Boot 4 with Spring Security 7 — login endpoint, token generation, validation, refresh tokens, and protected routes.

JWT Deep Dive — Structure, Signing, Validation & Common Mistakes

Understand JSON Web Tokens from the inside — header, payload, signatures, HMAC vs RSA, token validation, refresh strategies, and the mistakes that lead to security breaches.