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Here's one, from Bruce Schneier some nine years ago: > It took the academic community two decades to figure out that the NSA "tweaks" actually improved the sec

• EthanHeilman 13y ago
  Yes, the NSA created sboxes that were resistant to differential cryptanalysis. I was asking for a citation in regard to the claim that: >The small key size was later discovered to be right around the actual security level the cipher provides (larger key sizes would not have improved security by much). I have never heard this claim before and without any source backing it up I am liable to doubt it.