TFHE deep dive

TFHE is a fully homomorphic encryption scheme that enables fast homomorphic operations on booleans, integers and reals.

By enabling both leveled and bootstrapped operations, TFHE can be used for a wide range of usecases, from homomorphic boolean circuits to homomorphic neural networks.

Here are a series of articles that guide you to go deeper into the understanding of the scheme:

• TFHE Deep Dive - Part I - Ciphertext types

• TFHE Deep Dive - Part II - Encodings and linear leveled operations

• TFHE Deep Dive - Part III - Key switching and leveled multiplications

• TFHE Deep Dive - Part IV - Programmable Bootstrapping

The TFHE-rs handbook makes an in-depth description of TFHE.

The article Guide to Fully Homomorphic Encryption over the Discretized Torus gives more mathematical details about the TFHE scheme.

You can also watch the video record of the original talk by Ilaria Chillotti for FHE.org: