Polymorphic Capital

There has always been a contentious trade-off between extracting utility from a user’s data and preserving their privacy— what if you could do both? This article gives an introduction to Fully Homomorphic Encryption (FHE), a family of encryption schemes that allows users to perform computations on encrypted data, upending the utility-privacy trade-offs. The theory was first floated around in the late 70s (notably, by R and A of the RSA encryption team) but the first functional scheme was only...