pretty good presentation on that by djb: https://projectbullrun.org/surveillance/2015/video-2015.html#bernstein https://projectbullrun.org/surveillance/2015/vid

pretty good presentation on that by djb: https://projectbullrun.org/surveillance/2015/video-2015.html#bernstein https://projectbullrun.org/surveillance/2015/video-2015.html...