21CTO

Oct 23, 2026 · Backend Development

OpenSSL 4.1 Adds AVX-512 Optimizations for Post-Quantum Crypto & DTLS 1.3 Support

OpenSSL 4.1 introduces AVX-512 optimizations for ML-DSA and AES-CBC, adds DTLS 1.3 and GREASE support, drops Itanium/Windows CE, and publishes benchmarks showing performance gains across CPUs.