Previous crumb: Key+Stone=
So:
Key = Adm R/No Such Agency (W&W)
Stone = Potus/USMIL
???
How did the NSA hack our emails?
Professor Edward Frenkel discusses the mathematics behind the NSA Surveillance controversy
Part 1, 11 mins: https://www.youtube.com/watch?v=ulg_AHBOIQU
Part 2, 4 mins: https://www.youtube.com/watch?v=1O69uBL22nY