>Not sure they have an AES accelerator The ARM chips in the all of the Raspberry pis do not have AES accelerators. Encrypting your pis drive is going to be a s

>Not sure they have an AES accelerator The ARM chips in the all of the Raspberry pis do not have AES accelerators. Encrypting your pis drive is going to be a serious hit on performance like you said. I don't recommend it. If you really really really want to encrypt your Rpi then you need to use a disk cipher like Adiantum. It is based off of ChaCha12 and was made specifically for low end CPUs that lack AES accelerators.