Perfectly nonlinear functions
( go to the article → https://www.johndcook.com/blog/2020/10/09/perfectly-nonlinear-functions/ )
The other day I heard someone suggest that a good cocktail party definition of cryptography is puzzle making. Cryptographers create puzzles that are easy to solve given the key, but ideally impossible without the key. Linearity is very useful in solving puzzles, and so a puzzle maker would like to create functions that are as […] The post Perfectly nonlinear functions first appeared on John D. Cook.
Oct. 9, 2020, 3:01 p.m.