# Future Goals

This handbook is a living document. While the current version covers the foundational ciphertexts and basic linear operations, the world of Fully Homomorphic Encryption (TFHE) is vast.

Here is the roadmap for upcoming content expansions and refinements.

***

### Refining the Core

*Continuous improvement of the existing sections.*

* **Visualizations:** Integrating more diagrams to visualize vector packing, polynomial rotation, and noise growth.
* **Interactive Examples:** Adding simple Python or Rust code snippets (using libraries like `tfhe-rs` or `Concrete`) to demonstrate the math in action.
* **Feedback Integration:** refining the "ELI5" (Explain Like I'm 5) analogies based on reader feedback to ensure maximum clarity.

***

### Planned New Sections

*The next major modules to be added to the handbook.*

#### 1. The Heavy Machinery (Non-Linear Operations)

Currently, the handbook covers linear operations (Addition, Const Mult). The next phase will cover the operations required for multiplication and noise management:

* **Key Switching:** How to change the secret key of a ciphertext homomorphically.
* **External Product:** Multiplying a GLWE ciphertext by a GGSW ciphertext.
* **CMux Gates:** The encrypted "If/Else" logic gate.

#### 2. The Engine of FHE: Bootstrapping (PBS)

Bootstrapping is the "Holy Grail" feature of TFHE that allows for infinite computation depth by resetting noise.

* **Blind Rotation:** The mathematical trick that enables Programmable Bootstrapping.
* **Modulus Switching:** Compressing ciphertexts to fit into rotation domains.
* **Sample Extraction:** Moving from Polynomial (GLWE) back to Scalar (LWE).

#### 3. Binary Arithmetic & Logic

* **Gate Bootstrapping:** How to build standard logic gates (AND, OR, XOR, NAND) over encrypted bits.
* **Circuit Construction:** Combining gates to perform complex logic like comparison (`>`,`<`) and max/min functions.

***

### How to Contribute

If you spot an error or have a suggestion for a topic you'd like to see covered, or want to contribute to this handbook please feel free to DM. The goal is to make this the most accessible TFHE resource available.


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