Xiaolin Talks Programming

Sep 12, 2026 · Backend Development

Spring Boot SM2/SM3/SM4 Integration: Pitfalls, Key Management & Performance Tuning

This article details practical integration of Chinese national cryptographic algorithms SM2, SM3, and SM4 into Spring Boot, covering dependency setup, encryption/decryption, signing/verification, anti-replay protection, JWT implementation, TLS offloading via Nginx, key rotation strategies, and performance optimizations that raised throughput from 300 to 1300 TPS.