Cryptographically Relevant Quantum Computer (CRQC)

Definition

A Cryptographically Relevant Quantum Computer is a quantum computer powerful enough to break current public-key cryptography. CRQCs would run Shor's algorithm to factor RSA keys and solve discrete logarithms for ECDSA. Current quantum computers lack the qubit count and error correction for CRQC status.

Technical Explanation

CRQC requirements: thousands of error-corrected logical qubits, sufficient quantum gates for Shor's algorithm circuits, low enough error rates for meaningful computation, and coherence times adequate for algorithm completion. Breaking 2048-bit RSA might require 4,000+ logical qubits; 256-bit ECDSA similar magnitude.

Current systems (IBM, Google, IonQ) have 50-1,000+ physical qubits with high error rates. Thousands of physical qubits typically yield few logical qubits after error correction. Timeline estimates for CRQCs range from 2030-2040, with substantial uncertainty.

SynX Relevance

SynX anticipates CRQC arrival by implementing quantum-resistant cryptography today. Whether CRQCs emerge in 2030 or 2040, SynX transactions remain secure. Kyber-768 and SPHINCS+ use problems that CRQCs cannot solve efficiently, regardless of qubit counts achieved.

Frequently Asked Questions

Does a CRQC exist today?: No—current quantum computers cannot break cryptography. CRQCs remain years to decades away.
Who will build the first CRQC?: Unknown—likely major tech companies (IBM, Google) or nation-state programs (US, China, EU).
Will we know when CRQCs exist?: Possibly not immediately—nation-states might keep cryptographic capabilities secret.

Protected before CRQCs arrive. Secure your assets with SynX now