@misc{Riv16y,
author = { Ronald L. Rivest },
title = { Keys Under Doormats },
howpublished = { Invited ("surprise speaker") talk given at the Enigma Conference (San Francisco) },
date = { 2016-01-27 },
OPTmonth = { January 27, },
OPTyear = { 2016 },
urla = { conference },
urlb = { conference-media},
urlc = { video },
}