Part 1. Introduction to FHE
This part introduces fully homomorphic encryption: what it is, why it matters, and the landscape of schemes and tools that exist today. By the end, you'll know what FHE can and cannot do, and where CKKS, the scheme this guide focuses on, fits in.
In this section, we'll cover:
- what FHE is, and the difference between single-party and multiparty setups (1.1),
- the FHE landscape, from its origins to today's schemes and libraries (1.2),
- a taste of what 0xPARC is currently capable of building with FHE (1.3),
- a comparison to similar technologies (1.4), and
- an honest look at what FHE struggles to do (1.5).