Well, the paperclip maximizer may be imperfect in some aspect.
Maybe it didn't research cryptography, because at given time making more paperclips seemed like a better choice than researching cryptography. (All intelligent agents may at some moment face a choice between developing an abstract theory with uncertain possible future gains vs pursuing their goals more directly; and they may make a wrong choice.)
The crypto here is a bit of a red herring; you want that in adversarial contexts, but a paperclipper may not necessarily optimize much for adversaries (the universe looks very empty). However, a lot of agents are going to research error-checking and correction because you simply can't build very advanced computing hardware without ECC somewhere in it - a good chunk of every hard drive is devoted to ECC for each sector and discs like DVD/BDs have a lot of ECC built in as well. And historically, ECC either predates the most primitive general-purpose digital ...
Thought experiment:
Through whatever accident of history underlies these philosophical dilemmas, you are faced with a choice between two, and only two, mutually exclusive options:
* Choose A, and all life and sapience in the solar system (and presumably the universe), save for a sapient paperclipping AI, dies.
* Choose B, and all life and sapience in the solar system, including the paperclipping AI, dies.
Phrased another way: does the existence of any intelligence at all, even a paperclipper, have even the smallest amount of utility above no intelligence at all?
If anyone responds positively, subsequent questions would be which would be preferred, a paperclipper or a single bacteria; a paperclipper or a self-sustaining population of trilobites and their supporting ecology; a paperclipper or a self-sustaining population of australopithecines; and so forth, until the equivalent value is determined.