Technical dictionary
Cryptographically Relevant Quantum Computer (CRQC)
A quantum computer large and reliable enough to break real-world public-key cryptography.
Definition
A CRQC is not a lab prototype that factors 15—it is a machine that can run Shor-class attacks against production key sizes in a meaningful timeframe.
Timelines are uncertain; HNDL and compliance regimes still push preparation before a public CRQC appears.