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Some thoughts about Anthropic's new cryptanalysis results

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Anthropic's cryptanalysis results, cutting-edge AI safety research with high technical depth.

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Some thoughts about Anthropic's new cryptanalysis results
Summary

Anthropic's Claude Mythos produced two cryptanalysis results: an exponential-time key recovery on HAWK (post-quantum signature based on module-LIP) that halves its security bits using only existing tools, demonstrated with code running hours on a weakened instance; and a modest constant-factor improvement on a 7-round AES variant, far from breaking the full cipher. The HAWK outcome underscores AI's ability to systematically apply known cryptanalytic techniques, raising questions about security margins for proposed schemes.

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Matthew Green

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