Ethereum eyes 7-cent quantum account protection
Ethereum could introduce post-quantum protection for user accounts at a cost of roughly $0.07 per account under a new proposal from Ethereum Foundation Kohaku project lead Nicolas Consigny.
Consigny outlined a framework called SPHINCS-, which adapts the SPHINCS+ post-quantum signature standard developed by the National Institute of Standards and Technology to operate more efficiently on Ethereum.
The proposal aims to reduce onchain verification costs while avoiding the need for a protocol upgrade, hard fork or specialised precompile, potentially allowing quantum-resistant protections to be deployed sooner than more comprehensive network changes.
Consigny described SPHINCS- as an interim solution that could eventually lead to a more advanced system known as leanSPHINCS, which seeks to lower verification costs further through signature aggregation techniques.
The initiative is designed to address the long-term threat that quantum computers may pose to Ethereum’s current elliptic curve cryptography, which secures user accounts and transactions across the network.
Interest in post-quantum security has grown across the cryptocurrency industry following recent demonstrations of quantum computing capabilities, including research by Giancarlo Lelli, who successfully used a quantum computer to break a 15-bit elliptic curve key.
While modern cryptocurrency networks use significantly stronger 256-bit encryption, researchers continue to explore mitigation strategies because a sufficiently powerful quantum computer could theoretically compromise existing cryptographic systems through algorithms such as Shor’s algorithm.
According to Glassnode, approximately 1.92 million Bitcoin are considered structurally vulnerable in a future quantum attack scenario, while an additional 4.12 million BTC face operational risks linked to address and key management practices.
The proposal highlights growing efforts within both the Ethereum and Bitcoin communities to prepare for future advances in quantum computing long before the technology becomes capable of threatening current blockchain security standards.
At the time of reporting, Ethereum price was $1,718.88.
