Why Cryptography?

We as engineers somewhere have a level somewhere where everything beneath that is a black box… Jake Wharton, Fragmented Episode 7, 1:12:00 For a while now, anything security or crypto related on Android has been a black box for me. For example, when I read the docs on Android’s KeyStore class or hear about Android’s Fingerprint authentication functionality on Fragmented, I often feel like I’m just barely understanding what’s being said. »