It can be done ! http://people.csail.mit.edu/nickolai/papers/popa-cryptdb-cacm.pdf http://people.csail.mit.edu/nickolai/papers/popa-cryptdb-cac... That said,

It can be done ! http://people.csail.mit.edu/nickolai/papers/popa-cryptdb-cacm.pdf http://people.csail.mit.edu/nickolai/papers/popa-cryptdb-cac... That said, I doubt that Google is doing it. More interesting is that this tech appeared two years ago, I thought the world would rush to pick it up and as far as I know no one has!