These researchers come from secretive Los Alamos National Labs, too. If LANL is willing to divulge this work, what do ULTRA-secretive places like Fort Meade have going?
This sounds like a job for Alex Jones! But, seriously though, we know about this because they published a research paper. It's not like this is leaked, classified information.
That's what he's saying. If this is the NSA telling us what the s-boxes for DSA are, what's the equivalent to the DSA understanding differential cryptanalysis when designing the s-boxes?