Claude AI Just Cracked a Post-Quantum Test Scheme and Found a Faster 7-Round AES Attack
Claude AI found a faster attack on 7-round AES and a key recovery attack on HAWK-256.
Anthropic's Claude AI has identified a significant speedup for an attack on seven-round AES-128, making it 200 to 800 times faster. Additionally, it derived an end-to-end key-recovery attack against HAWK-256, a post-quantum signature scheme candidate. Anthropic emphasizes that these findings do not impact current production systems, as the AES attack applies to a limited number of rounds and the HAWK attack targets a specific challenge parameter.
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The lesson from this incident
Full lessonAnthropic's Claude AI demonstrated that advanced AI models can accelerate cryptanalytic research, discovering a 200–800x speedup for a 7-round AES-128 attack and a full key-recovery attack against HAWK-256, a post-quantum signature scheme candidate. While these findings do not compromise production systems today, they signal that the threat landscape for cryptographic primitives is evolving faster than previously anticipated, partly driven by AI-assisted research. Organizations relying on non-standard cryptographic configurations, reduced-round implementations, or early-stage post-quantum candidates face emerging risk. This matters because cryptographic agility — the ability to rapidly swap out weakening algorithms — is no longer a theoretical best practice but an operational necessity as AI compresses the timeline of cryptanalytic breakthroughs.
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Indicators of Compromise
Extracted by AI from the linked source. Not reviewed by an editor. How this works
- malware — 7-round AES-128 attack