Couldn't they also move the keys around in memory to every second or keep the bytes of the key separated (this seems like it would be similar to encrypting)? T

Couldn't they also move the keys around in memory to every second or keep the bytes of the key separated (this seems like it would be similar to encrypting)? These side channel attacks even under ideal conditions take a very long time and part of the problem is they basically need to guess at memory addresses. Even when data is in a known location, it is sketchy. Anything that slows down locating data would help immensely.