advanced-bfv-fhe

advanced-bfv-fhe by Avdhut Bagal

A pure Python implementation of the Brakerski/Fan-Vercauteren (BFV) Fully Homomorphic Encryption (FHE) scheme.

This library provides a mathematically rigorous, dependency-light framework for exploring lattice-based cryptography. It implements advanced optimization techniques including the Residue Number System (RNS) and the Number Theoretic Transform (NTT) entirely in Python using NumPy.

⚠️ Disclaimer: This package is intended for educational, research, and proof-of-concept purposes. Pure Python cryptographic implementations are vulnerable to timing attacks and lack the performance required for production-grade security systems. For securing real-world sensitive data, please use established C++/Rust engines.

Features

• Pure Python Architecture: No C++ compilers or complex Rust toolchains required to install and run.
• Residue Number System (RNS): Avoids multi-precision arithmetic bottlenecks by decomposing large ciphertexts.
• Number Theoretic Transform (NTT): Accelerates polynomial multiplication from $O(N^2)$ to $O(N \log N)$.
• Relinearization: Prevents ciphertext expansion during homomorphic multiplication, keeping memory footprints manageable.

Installation

Install the package directly from PyPI using pip:

pip install advanced-bfv-fhe