S-boxes should be balanced (equal number of 0s and 1s in the boolean function truth table) Boolean functions must be non-linear Single bit changes on the input cause changes on 1/2 of the outputs Good ...

This gets into the Boolean weeds a bit, ... He’s able to then create strings that reference these truth tables. For example: the first line of [Phillip’s] AND table is #define AND_00 0.

A chart of a logical operation's inputs and outputs. The following example is a Boolean NAND truth table. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission ...