The SPHINCS- proposal aims to reduce the cost of post-quantum signature verification on Ethereum while the network works toward a longer-term solution.
Ethereum could begin adding post-quantum protections to accounts for as little as $0.07, without waiting for a hard fork, according to the Ethereum Foundation's Kohaku project lead Nicolas Consigny.
In a Saturday X post, Consigny shared a paper proposing a cheaper way for Ethereum users to protect their accounts against future quantum-computing threats. The approach adapts SPHINCS+, a post-quantum signature standard developed by the US National Institute of Standards and Technology, to work more efficiently on Ethereum.
Dubbed “SPHINCS-,” the proposal aims to reduce onchain verification costs without requiring a protocol change or precompile. Consigny described SPHINCS- as a bridge toward a future post-quantum signature system dubbed “leanSPHINCS,” which aims to further reduce verification costs through aggregation.
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