Breaking passwords with a microphone
This repository contains a Python proof-of-concept for breaking passwords with a microphone, using machine learning.
Because keyboards are mechanical devices, each key may create a slightly different sound due to various manufacturing considerations. The fact that keys make a somewhat unique sound is a vulnerability. Although it is not easily picked up by our ear, it can be exploited by an algorithm...
Please have a look at my original article here: http://charleslabs.fr/en/project-Breaking+Passwords+with+a+Microphone
- Keras and Tensorflow (
pip3 install keras tensorflow)
- argparse (
pip3 install argparse)
Disclaimer: this is research code, build as a proof-of-concept. It is not meant to be a practical application.
This repository includes two executable Python files:
- split_audio.py, a script that breaks up an audio recording file in WAV format into individual files for each key presses. It is used to generate the train data.
- audio_reco.py, a script that actually performs the key recognition. Several methods are included.
To generate the train data, call the "split_audio.py" script:
./split_audio.py --input ./path/to/file_with_KEY_presses.wav --out-dir ./path/to/train --label KEY
To launch the learning process, save the model and make a prediction:
./audio_reco.py --train-path ./path/to/train --test-path ./path/to/test.wav --model ../path/to/save/trained_model.h5
You may want to use the
--help option on both scripts.