I was once asked in a pub how to run a program on hardware hosted by an untrusted party, such that untrusted party can not know what the program is computing.
My immediate answer was fully homomorphic encryption #FHE. The next day I extended the answer to include indistinguishability obfuscation as well.
Initial idea was to develop this on partially reconfigurable #FPGA s, then I looked at the maths and the then state of the art. No, not doing that.
#cryptography is this more doable today?