Re:Too Much Crypto [pdf]
by tptacek on Monday December 30, 2019 @10:59PM
(#21918842)
Are you suggesting it's going to look a lot different from the previous 45 years? Because the previous 45 years suggest pretty strongly that we do in fact know how to design a block cipher.
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Public knowledge of differential cryptanalysis is younger than 45 years, and was known to NSA 20+ years before its public "discovery" (and known to IBM 15 years before).
Multiple finalists in the AES competition (which selected Rijndael) had significant weaknesses found in the decade since, despite receiving relatively little attention (MARS, Serpent).