Hoskinson says Vitalik’s AI warning could delay the internet’s quantum defenses

Hoskinson says Vitalik's AI warning could delay internet's quantum defenses

Background of Lattice-Based Cryptography

Cardano founder Charles Hoskinson accused Vitalik Buterin of undermining quantum-resistant cryptography with speculative warnings about AI-driven mathematical breakthroughs. In an Oct. 9 post, Hoskinson challenged the Ethereum co-founder's skepticism toward lattice-based cryptography, arguing that decades of security research had already accounted for the technology's known weaknesses.

Buterin's Warning and Hoskinson's Response

Buterin said Ethereum's long-term roadmap has moved toward hash-based signatures and proofs, avoiding lattice-based designs. Hoskinson rejected that reasoning, accusing Buterin of being too invested in Ethereum's existing research direction to reconsider its approach.

Mathematical Case Against Lattices

Hoskinson challenges the mathematical case against lattices, citing the history of integer factorization and the general number field sieve. He argued that AI could deliver decades of comparable mathematical progress in a much shorter period, potentially revealing unexpected shortcuts against lattice-based systems.

Post-Quantum Alternatives

The dispute concerns post-quantum alternatives to the elliptic-curve signatures used by Bitcoin and Ethereum. Hoskinson pointed to more than four decades of research, including advances in lattice reduction and sieving algorithms, that have progressively improved attacks without producing a general breakthrough capable of defeating properly configured systems.

Ethereum's Hash-Based Strategy

Hoskinson also challenged the assumption that hash-based cryptography offers greater protection against unforeseen mathematical discoveries. He cited historical weaknesses in MD5 and SHA-1 as evidence that hash functions can contain exploitable structures, although those failures do not establish vulnerabilities in modern constructions such as SHA-256.