11/14/2025
In today’s digital world, RSA‑2048 and ECC underpin online trust. Quantum computing could overturn this by factoring large integers and solving discrete logarithms far faster than classical machines. Where are we today? Some say the countdown to breaking classical public‑key cryptography has begun; others argue practical quantum computers remain far off due to engineering hurdles. This article explains the principles behind the threat, how quantum computers are built, the key engineering bottlenecks, and how far we are from a practical system capable of breaking RSA‑2048.