I'm also doubting that but before I knew Shape CPU, I believed because FURISC seems to be based on HEROIC, which is claimed to be the first processor emulation

I'm also doubting that but before I knew Shape CPU, I believed because FURISC seems to be based on HEROIC, which is claimed to be the first processor emulation over homomorphic encryption. https://past.date-conference.com/proceedings-archive/PAPERS/2014/DATE14/PDFFILES/09.3_4.PDF https://past.date-conference.com/proceedings-archive/PAPERS/... I think FURISC is more like HEROIC than ShapeCPU. By the way, I feel sad for there is no publication of ShapeCPU. I guess that this is one of the causes of FURISC paper is lacking reference for ShapeCPU.