Because this doesn't work at all, and would only help with one very specific kind of side channel (e.g. remote timing). I've written about this before on this

Because this doesn't work at all, and would only help with one very specific kind of side channel (e.g. remote timing). I've written about this before on this site: https://news.ycombinator.com/item?id=16069502 https://news.ycombinator.com/item?id=16069502