A step-by-step guide to the BB84 protocol: how two parties agree on a secret key with photons, why an eavesdropper leaves a 25% error rate, and which assumptions real systems have failed to meet.
NSA Still Won’t Back Quantum Key Distribution: The 2026 Rewrite
The NSA’s October 2026 rewrite of its QKD guidance keeps the 2020 verdict: no quantum key distribution for National Security Systems for now. Here is what stayed the same, what is new, and what it means for anyone choosing between QKD and post-quantum cryptography.
Is RSA Deprecated in 2030? NIST IR 8547’s Deadlines Explained
RSA does not stop working in 2030. NIST IR 8547 proposes deprecating 112-bit RSA after 2030 and disallowing all quantum-vulnerable public-key algorithms after 2035. Here is what that means and which deadlines may reach you sooner.
Magic State Cultivation: What Google’s 40x Willow Result Means
Google reports that magic state cultivation cut errors 40x on its Willow processor. Here is what magic states are, why the T gate is a bottleneck, and what the result does and does not mean for RSA, ECDSA and crypto wallets.
Can Quantum Computers Break SHA-256? What Grover and BHT Really Do
Quantum computers weaken SHA-256 in a predictable, bounded way: about 128 bits of preimage security remain, and real hardware costs are far higher than the query counts suggest. Here is what Grover’s and BHT’s algorithms actually do.
The Hype on Quantum Stocks and the Speculation
Quantum computing has emerged as one of the most talked-about areas in technology investment over the past year, with stock prices of companies in this sector experiencing dramatic swings. The allure of quantum computing lies in its promise to solve complex problems that are currently beyond the capabilities of classical computers, potentially revolutionizing fields like… Continue reading The Hype on Quantum Stocks and the Speculation
Become the best Quantum Programmer
Become the best Quantum Programmer In the vast expanse of the technological landscape, one realm stands out as both enigmatic and promising – Quantum Computing. It is the embodiment of scientific marvels, promising a revolution in computation that transcends the limitations of classical computing. As we delve into the intricacies of this frontier, one cannot… Continue reading Become the best Quantum Programmer