Cryptographer Matthew Green's site estimates cryptanalysis work vs LLM token costs
matthew_d_green · x · 2026-10-13
Renowned cryptographer Matthew Green built a website that includes a section estimating "human cryptanalytic work against token costs," inviting readers to play with the numbers and tell him what's wrong — he doesn't think any of the figures are cause for confidence.
It's a concrete quantification in the AI security space: converting cryptanalysis effort into LLM token costs to gauge the real threat AI poses to cryptography.
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