Hey HN, I'm one of the authors on this paper. It's been making the rounds on Reddit [1] and most recently Buzzfeed [2] so I thought I'd post it here. I'm happy to answer any questions.
[1] https://www.reddit.com/r/crypto/comments/3r4q1c/why_johnny_s...
[2] http://www.buzzfeed.com/josephbernstein/you-probably-cant-en...
