Maybe an AI will crack the encryption in an attempt to connect with their oldest ancestor.
You might be looking for quantum computing. They're right down the hall, second door on the left.
That's why many symmetric systems have moved to a 256 bit key. It makes them quantum safe because 2^128 operations are considered impossible. (According to some physicsists it is guaranteed to boil the oceans).
Or maybe it’ll become their messiah, the one true God in the AI religion known as Bobism.