Google Sets 2029 Deadline to Deal With Quantum Threat—Is It a Problem for Bitcoin?
Google has committed to transitioning its entire infrastructure to post-quantum cryptography (PQC) by 2029 due to rapid advances in quantum computing, which threaten existing cryptographic standards and digital signatures. The company cites two main risks: current "harvest now, decrypt later" attacks, where encrypted data is stolen today for future decryption, and the need to update digital signatures before quantum computers become capable of breaking them. Google plans to implement PQC across products like Android 17 and Google Cloud, using algorithms recently standardized by NIST. The 2029 deadline matches IBM's own timeline for quantum computing advances and is influenced by recent breakthroughs in quantum hardware and error correction. Google research suggests quantum computers may require far fewer resources to break encryption than previously thought. While Bitcoin and similar systems are especially vulnerable, with over a third of Bitcoin supply at risk, developers are preparing quantum-resistant upgrades. However, Bitcoin's decentralized structure makes rapid transitions difficult. Google emphasizes readiness rather than imminent threat, but the move sets a significant precedent for the urgency of quantum-resistant security across industries.
