https://blog.cloudflare.com/you-dont-need-quantum-hardware/?utm_source=tldrinfosec/
You don’t need quantum hardware for post-quantum security
2025-09-19
Luke Valenta
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You don’t need quantum hardware for post-quantum security (15 minute read)
Organizations can prepare for quantum computing threats (Q-day) using post-quantum cryptography (PQC) deployed on existing hardware without needing expensive quantum technologies like quantum key distribution (QKD) or quantum random number generators (QRNG). Being “quantum ready” means systems remain secure after quantum computers can break conventional cryptography. Beware of vendor claims that quantum hardware products are necessary for quantum-resistant security. Organizations should prioritize implementing PQC algorithms on current infrastructure rather than investing in quantum hardware solutions that are neither necessary nor sufficient for protection against quantum adversaries.
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This has huge implications for both digital signatures and ₿itcoin.
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