Post-Quantum Cryptography: Urgent Transition by 2030 🔐

The provided text outlines the urgent transition to post-quantum cryptography as mandated by the Australian Signals Directorate, which has set a strict 2030 deadline for phasing out traditional asymmetric algorithms. It serves as a practical engineering guide for hardening digital infrastructure using TLS 1.3, OpenSSH, and IPsec configurations that meet modern compliance standards. The source details specific approved algorithms such as ML-KEM and ML-DSA, while highlighting the necessity of AES-256 and high-bit rate hashing. Beyond technical settings, it emphasizes that cryptography is a system dependency, requiring rigorous lifecycle management and hardware-backed security. Ultimately, the text provides a roadmap for engineers to move away from legacy systems like RSA and ECDH in favour of quantum-resistant alternatives.