In a new blog post, Bruce Schneier responds to a series of posts by Matthew Green about AI's potential to revolutionize cryptanalysis. Green has been pessimistic, suggesting AI systems could vastly outperform human cryptanalysts on both symmetric and public-key ciphers.
Schneier says he is more optimistic. His confidence rests on the "over-engineering" of cryptographic systems—the practice of building in extra security margins beyond what is currently necessary. He believes this will provide a buffer against future AI-driven attacks.
The exchange highlights a growing debate in the security community about how to prepare for AI's long-term impact on cryptography. The source does not provide details on specific ciphers or timelines, but the disagreement is clear.