Ethereum can quantum-proof accounts for just 7 cents, says Ethereum's Kohaku lead
Summary
Ethereum may be able to add post-quantum account protection for about $0.07 per account without a hard fork, using a proposal from Ethereum Foundation’s Kohaku project lead Nicolas Consigny. The idea adapts NIST’s SPHINCS+ signature scheme into “SPHINCS-,” aiming to lower onchain verification costs while avoiding protocol changes or a precompile. It is meant as an interim step toward a more efficient future system, “leanSPHINCS,” which would use aggregation to cut costs further. The goal is to reduce Ethereum’s long-term exposure to quantum attacks against its current elliptic-curve signatures.
