[xpe]

Crib sheets (i.e. listing various flavors of encryption algorithms) IMO work reasonably well when people have a decent conceptual mindset to start with.

I strive to assume very little when it comes to the knowledge of I meet. With cryptography, even less so. For example, given some developers you interact with, to what degree do they understand encryption versus digesting? I'm not even talking about the details; I'm talking about the big picture of when each is applicable.

So, even before something like a crib sheet of techniques, some people would benefit from something even simpler: an "IF-THEN" flowchart helping them recognize when they want, say, encryption versus digesting versus something else.