Password Strength Sim

✨ Password Strength Simulator

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A lightweight, modern, and password analysis tool built with Python, NumPy, and CustomTkinter. This project demonstrates how to use vectorized math to score password security and log audit data in real-time.

🚀 Features

Vectorized Scoring:

Uses NumPy's np.clip and np.select for lightning-fast character analysis.

Modern GUI:

A sleek, Dark Mode interface powered by CustomTkinter.

Real-time Feedback:

Dynamic color-coded results (Strong 💪, Moderate 😁, Weak 😟).

Security Logging:

Automatically generates a Password_log.log file to track audit history (without saving the actual passwords for safety!).

Regex Integration:

Detailed checks for digits, special characters, and uppercase letters.

Screenshots

App Screenshot

🛠️ Installation

Clone the repository:

git clone https://github.com/reory/password-strength-sim.git
cd password-strength-sim

Install dependencies:

pip install numpy customtkinter

Run the app:

python gui.py

🧠 How It Works (The NumPy Logic)

This app doesn't just use standard Python loops. It treats password metrics as data arrays.

Length Clipping:

Uses $np.clip(length, 0, 12)$ to ensure length contributes a maximum of 12 points to the total score, preventing "length-padding" from tricking the system.

Categorization:

Uses $np.select(conditions, choices)$ to map numerical scores to human-readable labels instantly.

🗺️ Future Roadmap

[ ] Common Password Blacklist: Use NumPy to cross-reference a database of 10,000+ leaked passwords.
[ ] Entropy Meter: Implement a Shannon Entropy formula for scientific randomness scoring.
[ ] Password Generator: A button to create high-entropy, randomized passwords.
[ ] Data Visualization: A popup graph showing your password strength trends over time.

Built By Roy Peters 😁