Cryptographer Matthew Green: publish negative results on AI cryptanalysis, silence is worst

matthew_d_green · x · 2026-10-09

Johns Hopkins cryptographer Matthew Green quipped that "I ran a top internal model for N trillion tokens at a frontier lab and it couldn't dent this fundamental assumption" should automatically win Best Paper at CRYPTO/Eurocrypt.

Addressing cryptanalysts working with models and the labs, he urged the community to publish negative results — empirical records of AI failing to break cryptographic assumptions: "what we need right now are negative results. Silence is the worst thing you could be publishing."

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