Intro

This project is an unofficial implementation of STATISTICAL RANDOM NUMBER GENERATOR ATTACK AGAINST THE KIRCHHOFF-LAW-JOHNSON-NOISE (KLJN) SECURE KEY EXCHANGE PROTOCOL. Not only the four attacks against KLJN scheme were implemented, but also a CTF challenge according to the attack was created. Make fun of it and issue (or PR :D) if there is any mistake.

The four attacks include

• Bilateral attack demonstration utilizing cross-correlations between Alice’s/Bob’s and Eve’s wire voltages, currents and powers
• Bilateral attack demonstration utilizing cross-correlations among the voltage sources
• Unilateral attack demonstration utilizing cross-correlations between Alice’s/Bob’s and Eve’s wire voltages, currents and powers
• Unilateral attack demonstration utilizing cross-correlations among the voltage sources

Usage

This Project includes three file as follow:

Implementation.py

python3 Implementation.py can output the result under four attacks, and the default ground truth = LH and M = 0.1 .

KLJN_Crack.py

python3 KLJN_Crack.py will generate a CTF challenge file data.py, with which challenger can solve the challenge by the first attack.

sol.py

After executing KLJN_Crack.py, python3 sol.py will solve the challenge and output the flag. By calculating cross-correlation coefficient of Uw, UHH, UHL, ULH, ULL, challenger can utilize the information leak and get the flag.