🔒 Password Strength Analyzer

📖 Overview

Password Strength Analyzer is a robust, Python-based security tool designed to evaluate password strength using comprehensive criteria. It supports both users and developers in creating and validating secure passwords through industry-standard security checks and detailed feedback.

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🌟 Key Features

• ✅ Advanced Length Validation: Ensures password length meets security standards.
• 🔍 Multi-Factor Complexity Analysis: Checks for uppercase, lowercase, numbers, and special characters.
• 🚫 Pattern Recognition & Prevention: Flags common patterns that weaken passwords.
• 📊 Vulnerability Assessment: Compares passwords against known weak or vulnerable lists.
• 💯 Detailed Scoring System: Provides an overall security score.
• 📝 Actionable Security Feedback: Offers specific improvement suggestions.

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🛠️ Installation

1. Clone the Repository

   git clone https://github.com/yourusername/password-strength-analyzer.git

2. Navigate to Project Directory

   cd password-strength-analyzer

3. Install Dependencies

   pip install -r requirements.txt

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💻 Usage

Basic Implementation

Use the following code snippet to analyze password strength programmatically:

from password_analyzer import PasswordStrengthAnalyzer

# Initialize analyzer
analyzer = PasswordStrengthAnalyzer()

# Analyze password
result = analyzer.analyze_password("YourPassword123!")

# Get results
print(f"Strength Score: {result['score']}/100")
print(f"Feedback: {result['feedback']}")

Command-Line Interface (CLI)

Analyze a password directly from the command line:

python password_analyzer.py --password "YourPassword123!"

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📊 Scoring Criteria

Criterion	Points	Description
Length	20	Minimum 8 characters
Complexity	30	Mix of character types
Patterns	25	Absence of common patterns
Dictionary	25	Resistance to dictionary attacks

Score Interpretation

• 🔴 0-20: Very Weak
• 🟠 21-40: Weak
• 🟡 41-60: Moderate
• 🟢 61-80: Strong
• 🔵 81-100: Very Strong

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🔍 Security Features

• Character Complexity
  • Uppercase Letters (A-Z)
  • Lowercase Letters (a-z)
  • Numbers (0-9)
  • Special Characters (!@#$%^&*)
• Pattern Detection
  • Keyboard Patterns (e.g., qwerty, 12345)
  • Repeated Characters
  • Sequential Patterns
  • Common Word Substitutions

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🤝 Contributing

We welcome contributions! Please follow these steps:

1. Fork the repository.
2. Create your feature branch:

   git checkout -b feature/AmazingFeature

3. Commit your changes:

   git commit -m 'Add some AmazingFeature'

4. Push to the branch:

   git push origin feature/AmazingFeature

5. Open a Pull Request for review.