TFHE Deep Dive - Part I - Ciphertext types

TFHE-rs is a Rust implementation of the Fully Homomorphic Encryption (FHE) scheme TFHE, designed for developers and researchers seeking control over encryption processes without delving into low-level implementations. The blog post is part of a series exploring TFHE, also known as CGGI, which enables computations over encrypted data and is based on the Learning With Errors (LWE) problem and its variants. TFHE distinguishes itself through fast bootstrapping that reduces noise while evaluating functions. The post details various types of ciphertexts, including GLWE, GLev, and GGSW, and explains that each type has specific properties beneficial for homomorphic operations. The process of encryption and decryption in TFHE is illustrated with examples, emphasizing the importance of managing noise. Although the blog post introduces complex concepts gradually, it aims to deepen understanding of FHE by discussing key elements such as ciphertext types and bootstrapping techniques, inviting readers to explore further in subsequent parts.