Trap Networks

	You will remember, Watson, how the dreadful business of the
Abernetty family was first brought to my notice by the depth which the
parsley had sunk into the butter upon a hot day.
		-- Sherlock Holmes

$where {p,q} are prime, n = pq, ed is congruent to 1 mod ((p-1)(q-1)), C = M^e(mod n), M = C^d(mod n)$