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by woodruffw 1802 days ago
> Yet. We get closer every time a new vulnerability is discovered.

Skipjack is the famous counterexample to this: it's been broken up to 31 rounds, but specified usage mandates 32 rounds. Skipjack was given immense scrutiny due to the NSA's role in its design, and we're no closer to a full-round break of it than we were in 1999.

1 comments

Even that is only theoretical, it's not a practical attack.