#5 - Quantum Security, Cryptography & the Future of Trust

How do you build quantum-secure systems before quantum computers even exist? In this episode of The Quantum Podcast, Christopher Smith (founder of Quantus Network) and Joe Mattia break down the misconceptions, mathematics, and market signals behind the global race toward post-quantum cryptography. They explore how cryptographic security is proven through mathematical guarantees rather than hardware tests, why Bitcoin's elliptic-curve signatures are vulnerable to quantum attacks, and why lattice-based cryptography — including Dilithium, now standardized by NIST — represents the next frontier of secure digital infrastructure. From safe-cracking analogies and electromagnetic side-channel attacks, to reversible transactions, photonic quantum computing, and the real-world politics of quantum-era Bitcoin, this episode maps the coming transformation of global security — and how Quantus is preparing the internet for the post-quantum world. Follow the Guests Christopher Smith https://x.com/YuviLightman  Joe Mattia https://x.com/JoeMattia  Quantus Network https://www.quantus.com/https://t.me/quantusnetwork https://linktr.ee/quantusnetwork  ⏱️ Chapters  00:00 – Quantum Monday & setting the record straight 02:00 – Why we don't need quantum computers to build quantum security 05:00 – Modeling quantum algorithms & the math that drives cryptography 08:00 – Classical vs quantum speed & why factorization breaks everything 11:00 – Debug loops, hardware evolution & why quantum machines are hard to build 14:00 – Market signals, investment flows & the real quantum arms race 17:00 – Bitcoin's elliptic-curve vulnerability & quantum-era politics 20:00 – Lattice cryptography, Dilithium & the future of secure signatures 24:00 – Side-channel attacks, constant-time coding & listening to the hardware 27:00 – The coming quantum upgrade & how Quantus is building ahead of it