LLMs won't break symmetric crypto
- On July 28th Anthropic announced new cryptanalytic attacks discovered using their LLM Claude Mythos: A key-recovery attack on HAWK, a post-quantum signature scheme candidate in NIST’s “Additional Digital Signatures” standardization project.
- Except for the toy version HAWK-256 whose 64-bit security is practically breakable, the new attack is not practical.
- But it's a meaningful break of HAWK’s security, as it reduces the estimated security level of HAWK-512 from its 128-bit target to at most 108 bits and, speculatively, as little as 81 (see Appendix C of the paper.)An improved key-recovery atta
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- On July 28th Anthropic announced new cryptanalytic attacks discovered using their LLM Claude Mythos: A key-recovery attack on HAWK, a post-quantum signature scheme candidate in NIST’s “Additional Digital Signatures” standardization project.
- Except for the toy version HAWK-256 whose 64-bit security is practically breakable, the new attack is not practical.
- But it's a meaningful break of HAWK’s security, as it reduces the estimated security level of HAWK-512 from its 128-bit target to at most 108 bits and, speculatively, as little as 81 (see Appendix C of the paper.)An improved key-recovery atta
Sources: Bfswa