Xiaolin Talks Programming

Aug 15, 2026 · Information Security

Enterprise API Security in Spring Boot: OAuth 2.1, mTLS & Signature Verification

This article details a comprehensive enterprise API security implementation using Spring Boot, covering OAuth 2.1 with PKCE and token exchange, mutual TLS for transport security, API signature verification to prevent tampering and replay, JWT encryption with JWE, fine-grained permission control, security auditing, gateway-level authentication, and alignment with OWASP API Top 10 vulnerabilities.