1. A method comprising: receiving, from a first computing device and at a second computing device, a first hash code, wherein the first hash code is determined by applying a hashing scheme to a first instance of a binary decision diagram (BDD) at the first computing device and the BDD represents sensor data from one or more sensors; and a second instance of the BDD; determining, by the second computing device, a second hash code by applying the hashing scheme to the second instance of the BDD; if the second hash code equals the first hash code, then indicating, by the second computing device, that the second instance of the BDD is valid; and if the second hash code does not equal the first hash code, then indicating, by the second computing device, that the second instance of the BDD is invalid.