Ethereum's Quantum Resistance Plan Sparks Debate Over Public Key Exposure
The Ethereum Foundation has announced its plan to make Ethereum L1 quantum-resistant by December 2029. This deadline is self-imposed and will be reassessed in January 2027 with outside experts.
Contrary to popular reports, this decision does not affect the price of ETH. The risk of hacking due to quantum computers is also exaggerated - most technical roadmaps place cryptographic relevance in the early to mid-2030s, far beyond the proposed deadline.
The real issue lies with the public key on Ethereum accounts. When a transaction is made, the signature sits on the chain, and the public key can be reconstructed from it. This applies to ordinary accounts (EOAs), staking validators, and rollup users, exposing over 0.1% of permanent holdings on Ethereum - a much smaller share than Bitcoin's.
The foundation ranks the attack surfaces by priority: ordinary user accounts (EOAs) are at the highest risk, followed by high-value operational keys, governance and upgrade keys, and validator keys. The migration to post-quantum designs is broader for Ethereum due to its larger number of active accounts.