You don’t need quantum hardware for post-quantum security

What this post added

This post clarifies that post-quantum cryptography (PQC) is the primary solution for quantum readiness and can be deployed on existing hardware. It contrasts PQC with quantum technologies like Quantum Key Distribution (QKD) and Quantum Random Number Generation (QRNG), explaining why the latter are not necessary or sufficient for protecting against quantum adversaries. The post details the limitations of QKD, particularly its lack of scalability for internet-wide use and implementation challenges, and argues that investments in quantum technology should not be based on the need for quantum security.