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Top AI Repos tracks AI repositories on GitHub and answers two different questions about each one: is it moving right now, and would you bet a product on it.
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A Deep Learning Approach for Password Guessing (https://arxiv.org/abs/1709.00440)
| Date | Stars |
|---|---|
| 2026-07-31 | 2008 |
| 2026-08-04 | 2008 |
| 2026-08-06 | 2007 |
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# PassGAN This repository contains code for the [_PassGAN: A Deep Learning Approach for Password Guessing_](https://arxiv.org/abs/1709.00440) paper. The model from PassGAN is taken from [_Improved Training of Wasserstein GANs_](https://arxiv.org/abs/1704.00028) and it is assumed that the authors of PassGAN used the [improved_wgan_training](https://github.com/igul222/improved_wgan_training) tensorflow implementation in their work. For this reason, I have modified that reference implementation in this repository to make it easy to train (`train.py`) and sample (`sample.py`) from. This repo contributes: - A command-line interface - A pretrained PassGAN model trained on the RockYou dataset ## Getting Started ```bash # requires CUDA 8 to be pre-installed pip install -r requirements.txt ``` ### Generating password samples Use the pretrained model to generate 1,000,000 passwords, saving them to `gen_passwords.txt`. ```bash python sample.py \ --input-dir pretrained \ --checkpoint pretrained/checkpoints/195000.ckpt \ --output gen_passwords.txt \ --batch-size 1024 \ --num-samples 1000000 ``` ### Training your own models Training a model on a large dataset (100MB+) can take several hours on a GTX 1080. ```bash # download the rockyou training data # contains 80% of the full rockyou passwords (with repeats) # that are 10 characters or less curl -L -o data/train.txt https://github.com/brannondorsey/PassGAN/releases/download/data/rockyou-train.txt # train for 200000 iterations, saving checkpoints every 5000 # uses the default hyperparameters from the paper python train.py --output-dir output --training-data data/train.txt ``` You are encouraged to train using your own password leaks and datasets. Some great places to find those include: - [LinkedIn leak](https://github.com/brannondorsey/PassGAN/releases/download/data/68_linkedin_found_hash_plain.txt.zip) (1.7GB compressed, direct download. Mirror from [Hashes.org](https://hashes.org/leaks.php)) - [Exploit.in torrent](https://thepiratebay.org/torrent/16016494/exploit.in) (10GB+, 800 million accounts. Infamous!) - [Hashes.org](https://hashes.org/leaks.php): Awesome shared password recovery site. Consider donating if you have the resources ;) ## Results I've yet to do an exhaustive analysis of my attempt to reproduce the results from the PassGAN paper. However, using the pretrained rockyou model to generate 10⁸ password samples I was able to match 630,347 (23.97%) unique passwords in the test data, using a 80%/20% train/test split. In general, I am somewhat surprised (and dissapointed) that the authors of PassGAN referenced [prior work](https://www.usenix.org/system/files/conference/usenixsecurity16/sec16_paper_melicher.pdf) in the ML password generation domain but did not compare their results to that research. My initial experience with PassGAN leads me to believe that it would significantly underperform both the RNN and Markov-based approaches mentioned in that paper and I hope that it is not for this reason that the authors have chosen not to compare results. ## Attribution and License This code is released under an [MIT License](https://github.com/igul222/improved_wgan_training/blob/master/LICENSE). You are free to use, modify, distribute, or sell it under those terms. The majority of the credit for the code in this repository goes to @igul222 for his work on the [improved_wgan_training](https://github.com/igul222/improved_wgan_training). I've simply modularized his code a bit, added a command-line interface, and specialized it for the PassGAN paper. The PassGAN [research and paper](https://arxiv.org/abs/1709.00440) was published by Briland Hitaj, Paolo Gasti, Giuseppe Ateniese, Fernando Perez-Cruz.
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Brannon Dorsey · @runwayml · United States
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Would you bet a product on this? Bounded 0–100 and slow moving.
matched fp:b40eceff09428fd3, llm:Repository topics (deep-learning, gan, machine-learning, password, password-cracking, password-strength) and description: 'A Deep Learning Approach for Password Guessing' implementing PassGAN (Wasserstein GAN) with training and sampling scripts and pretrained model.
matched fp:b40eceff09428fd3, llm:Repository topics (deep-learning, gan, machine-learning, password, password-cracking, password-strength) and description: 'A Deep Learning Approach for Password Guessing' implementing PassGAN (Wasserstein GAN) with training and sampling scripts and pretrained model.