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: Anthropic's Claude Mythos Preview model discovered a flaw in the proposed HAWK digital signature scheme, effectively halving its minimum key strength. HAWK is one of the candidate schemes to replace current network and bank signatures in a post-quantum environment. This AI-driven attack took approximately 60 hours, with a computational cost of around $100,000, reducing the effort required to break HAWK's minimum parameter set from roughly 2^64 operations to 2^38 operations, and diminishing the attractiveness of larger compensating key sizes. Current Bitcoin and Ethereum signatures remain unaffected. The results indicate that the capabilities of classical cryptanalysis attacks are improving, while Bitcoin and other networks continue to discuss when and how to migrate to quantum-resistant cryptography.
Anthropic stated that Claude Mythos Preview discovered improved attack methods against the post-quantum signature candidate scheme HAWK during cryptographic research, and reduced the effective key strength of HAWK-256 from 264264 to 238238, lowering the theoretical cracking cost.
: Anthropic's Claude Mythos Preview model discovered a flaw in the proposed HAWK digital signature scheme, effectively halving its minimum key strength. HAWK is one of the candidate schemes to replace current network and bank signatures in a post-quantum environment. This AI-driven attack took approximately 60 hours, with a computational cost of around $100,000, reducing the effort required to break HAWK's minimum parameter set from roughly 2^64 operations to 2^38 operations, and diminishing the attractiveness of larger compensating key sizes. Current Bitcoin and Ethereum signatures remain unaffected. The results indicate that the capabilities of classical cryptanalysis attacks are improving, while Bitcoin and other networks continue to discuss when and how to migrate to quantum-resistant cryptography.
Anthropic stated that Claude Mythos Preview discovered improved attack methods against the post-quantum signature candidate scheme HAWK during cryptographic research, and reduced the effective key strength of HAWK-256 from 264264 to 238238, lowering the theoretical cracking cost.