Security· ★★★· neutral·

Project Eleven: AI finds flaws in post-quantum schemes HAWK and Classic McEliece

  • —Anthropic's Claude Mythos found a key-recovery attack on HAWK, cutting HAWK-512 security from 2^150 to 2^108
  • —HAWK was withdrawn from NIST's post-quantum signature round in July 2026
  • —Key-recovery complexity for Classic McEliece is estimated as low as 2^94 operations
  • —Germany's BSI advised against deploying Classic McEliece in early October 2026
Why it matters: AI is compressing the timeline for finding flaws in post-quantum cryptography, forcing custody providers to revisit their key-security assumptions.
Source: Crypto Briefing
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