You can do it with a single gate and a handful of passive parts. http://ieee-security.org/TC/SP2016/papers/0824a018.pdf http://ieee-security.org/TC/SP2016/paper

You can do it with a single gate and a handful of passive parts. http://ieee-security.org/TC/SP2016/papers/0824a018.pdf http://ieee-security.org/TC/SP2016/papers/0824a018.pdf