Mythos attack on 3rd-round PQC algorithm candidate puts it out of commission
A quantum-resistant cryptography algorithm that was under consideration as an official US standard has been taken out of the running after an Anthropic security model helped find a flaw that rendered it broken. The algorithm is known as HAWK. It's a digital signature scheme designed to withstand future attacks from quantum computers. HAWK had survived two rounds of testing by NIST (the National Institute of Standards and Technology) for evaluating the security of PQC (post-quantum cryptographic)
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An AI security model discovered a previously unknown flaw in HAWK, a quantum-resistant cryptography algorithm that was being evaluated as a potential US standard. The flaw allows attackers to reduce the key strength of HAWK by half, making it less secure than competing algorithms and causing its developer to withdraw it from consideration. This matters because it demonstrates that AI can find weaknesses in cryptographic systems by combining existing mathematical methods in novel ways, which could signal important advances in breaking cryptography used for privacy and security. The discovered weakness is considered significant because HAWK had survived years of testing without revealing this fatal flaw, yet it was uncovered during a third round of evaluation designed to catch exactly these kinds of problems.
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