Carry propagation is one pixel in the 4K movie that is safe crypto implementation. One reason not to link to trivia and factoids about safe crypto implementation is that it builds a dangerous false sense of competence.
There are programs that teach this, but they take years. Nobody who's passed through that is interested in creating an easy scaffolding whose levels are unclear.
There are programs that teach this, but they take years. Nobody who's passed through that is interested in creating an easy scaffolding whose levels are unclear.