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Work · June 23, 2025

Enigma Machine and Bombe Implemented in eBPF – Turing's 113th Birthday

I implemented the Enigma encryption machine and Bombe decryption device in eBPF to honor Alan Turing's legacy. This project uses eBPF to process network packets through virtual Enigma rotors and reflectors, just like the original WWII-era machines. Messages sent through virtual interfaces are not only encrypted but also decrypted in real-time, demonstrating how Turing's pioneering work can be reimagined with modern systems programming. The implementation includes configurable rotors, reflectors, and position settings.

Enigma Machine and Bombe Implemented in eBPF – Turing's 113th Birthday launched on June 23, 2025 with 5 votes and more than 75% of that year's launches. The site was still online in September 2026, 1 year on.

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What it does

Virtual Enigma and Bombe eBPF simulation for real-time network packet encryption and cryptanalysis on Linux - aanm/enigma

This project implements a virtual Enigma encryption machine and a Bombe decryption device using eBPF. The system processes network packets in real-time, encrypting outgoing traffic and attempting (using bombe) to decrypt incoming traffic. make setup-network This creates a network namespace called 'testns' and sets up a pair of virtual ethernet interfaces (veth0 and veth1) connected to each other, with IP addresses 10.0.0.1 and 10.0.0.2 respectively. Network Communication +----------------------+ +------------------------+ | | veth pair | | | Host Namespace | | testns Namespace | | | | (World / Allies' Side) | | | +-------------------+ | | | | | | | | | [nc] | | | | | | | | | | | | | v | | |…from github.com

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