Ethereum-compatible networks could secure user accounts against quantum decryption years ahead of the mainnet’s native timeline, relying on proposed account abstraction upgrades rather than waiting for full protocol-wide overhauls, news.bitcoin.com reported.
Account Security Updates Under EIP-8130 and EIP-8355
“The recommendations that hemos formulado refer to measures that the mantenedores de las cadenas de bloques can apply by themselves hoy mismo,” Christopher Smith, co-founder and chief executive officer of quantum-secure blockchain Quantus, stated to news.bitcoin.com. The proposed route splits the monolithic quantum problem into manageable segments. Instead of attempting an immediate overhaul of entire consensus mechanisms, the framework targets user wallets and administrative keys directly. This approach could also protect critical infrastructure, such as sequencer and bridge keys.
The strategy hinges on two distinct Ethereum Improvement Proposals. EIP-8130, developed through Base, introduces a flexible account key store. This architecture permits accounts to register and rotate different authenticators without modifying their underlying addresses. A wallet can operate on standard ECDSA signatures today while appending a post-quantum ML-DSA key for future-proofing. Meanwhile, EIP-8355 integrates native verification for those ML-DSA signatures, supporting higher NIST security levels designed for long-duration keys.
Smith noted that these modifications cover transaction authorization and select consensus functions. However, the scope remains strictly bounded.
What Remains Unprotected in the Current Proposal
The architecture deliberately excludes protocol components that present heavier computational bottlenecks. Validator signatures, KZG blob commitments, cross-chain bridges, and pairing-based zero-knowledge proofs require separate engineering solutions. Networks operating independent validators would additionally need to deploy entirely new deposit and key registration systems.
Pure rollups might advance faster by inheriting Ethereum’s core consensus. Yet, they remain tethered to the mainnet for any cryptographic proofs executed on Layer 1. Smith acknowledged that the design remains theoretical rather than production-ready, noting that the concepts discussed draw on mechanisms already tested across various networks. “No lo hemos implementado ni probado, pero la mayoría de los EIP que hemos debatido se han implementado en alguna red,” Smith added.
Self-Custody Users Must Manually Transfer Assets to New Addresses
Protocol-level support alone does not automatically safeguard existing cryptocurrency wallets. Centralized exchanges and institutional custodians could handle backend migrations for client accounts, but users practicing self-custody would likely need to generate new seed phrases and transfer assets manually to post-quantum addresses. “Al hacer que las firmas poscuánticas estén disponibles, aunque sean opcionales, la cadena puede actualizarse sin tener que esperar a las aplicaciones,” Smith explained.
This targeted approach stands in stark contrast to Ethereum’s broader development trajectory. The overarching roadmap for Ethereum targets a fully quantum-resistant Layer 1 around December 2029. By making post-quantum signatures optionally available at the account layer, EVM chains could secure transaction authorization immediately, bypassing the multi-year timeline required to secure every protocol layer simultaneously.
