Password Strength Tester

A simple full-stack app to evaluate password strength and suggest strong passphrases. Backend: Flask (Python). Frontend: vanilla HTML/CSS/JS.

Features

• Score passwords with multiple signals (length, character variety, dictionary/sequence checks, breach heuristics).
• Suggest strong passphrases with separators, digits, and symbols.
• REST API: POST /api/evaluate, GET /api/suggest, GET /api/health.
• CORS enabled for local frontend development.

Project Structure

• app.py — Flask entrypoint and API wiring.
• backend/ — password evaluation logic (checker.py), helpers (utils.py), config data (config.py), routes (routes.py).
• index.html, script.js, style.css — simple frontend to call the API.

Requirements

• Python 3.10+ recommended.
• Install: pip install flask flask-cors

Run Backend

python app.py

The API listens on http://localhost:5000.

Run Frontend

Open index.html in a browser (or serve via a simple static server). The frontend expects the backend at http://localhost:5000.

API

• POST /api/evaluate — body: { "password": "..." }, returns strength, tips, and indicators.
• GET /api/suggest — returns { "suggestion": "passphrase" }.
• GET /api/health — returns { "status": "ok" }.

Notes

• Do not reuse weak or breached passwords.
• For production, run Flask behind a real server (gunicorn/uwsgi) and disable debug.

Password Strength Tester (Python Flask Backend)

This project now includes a Python Flask backend for password strength evaluation.

How to Run

1. Make sure you have Python 3.x installed.
2. Install Flask:

   pip install flask
   

3. Start the backend server:

   python app.py
   

4. Update your frontend (HTML/JS) to send password checks to http://localhost:5000/api/evaluate via AJAX/fetch.

Features

• Evaluates password strength using length, character variety, and dictionary checks
• Returns strength, tips, indicators, and estimated crack time
• Can be extended with a larger dictionary or more rules

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If you need help connecting the frontend to this backend, let me know!