This conversation plays out hundreds of times a day, but (thankfully) only a handful of those involve me: Person: "I have [problem]." Cryptography nerd: "Oh, you probably want to use [sensible recommendation]." Person: "Ah, well, can I really trust that? The NSA probably backdoored it 30 years ago. Dual_EC, amirite?!" Cryptography nerd: ... Koblitz and…