Real-Time Password Strength Checker using Python

This project is a web-based password strength checker that provides real-time feedback on password strength, including an estimation of how long it would take to crack the password using a brute force attack, along with user-friendly suggestions and educational content. The Web Application UI was created using HTML and CSS with the help of AI

Features

• Real-time password strength evaluation
• Visual strength meter
• Detailed feedback on how to improve password strength
• Estimated time to crack the password
• User-friendly suggestions for password improvement
• Generation of strong password examples
• Educational tooltips on password best practices
• Dark-themed, responsive user interface

How It Works

Backend (app.py)

The backend is built using Flask, a lightweight Python web framework. Here's how it functions:

1. Password Strength Checking:

   • The check_password_strength() function evaluates the password based on several criteria:
     • Length
     • Presence of uppercase letters
     • Presence of lowercase letters
     • Presence of numbers
     • Presence of special characters
   • It assigns a strength rating (Very Weak, Weak, Moderate, Strong, Very Strong) based on these criteria.
   • It also generates feedback on how to improve the password.

2. Cracking Time Estimation:

   • The estimate_cracking_time() function calculates an estimated time to crack the password using a brute force attack.
   • It considers the character set used in the password and the password length.
   • The estimation assumes a rate of 1 billion guesses per second.

3. Improvement Tips:

   • The get_password_improvement_tips() function generates specific tips based on what the current password is lacking (e.g., "Add uppercase letters" if there are none).

4. Strong Password Generation:

   • The generate_strong_password() function creates a random strong password as an example for the user.

5. API Endpoint:

   • The /check_password route accepts POST requests with the password.
   • It returns a JSON response with the strength rating, feedback, estimated cracking time, improvement tips, and a strong password suggestion.