Python Script - Password Manager 🔐

This Python-based password manager helps users securely save, store, generate, and encrypt passwords. The application uses Fernet encryption from the cryptography library to ensure that your passwords are protected.

Features ✨

• Add Password: Securely store a password for a specific username.
  • Optionally generate a strong, secure password automatically.
  • Checks the strength of manually entered passwords.
• Check Password: Verify if a given password matches the stored encrypted password.
• Find Password: Retrieve and decrypt the stored password for a given username.
• Delete Password: Remove a stored password entry for a given username.
• Master Password: Requires entering a master password to authenticate and access the password manager.
• Secure Storage: Uses Fernet symmetric encryption. The encryption key is stored locally in secret.key, and encrypted passwords are in passwords.txt.

Requirements 📋

• Python: Ensure Python 3 is installed on your system.
• IDE: You can use any IDE, such as PyCharm, VS Code, or even a simple text editor to edit the script.

Installation ⚙️

1. Clone or download this repository/script to your local machine.
2. Install the required Python library by running:

   pip install cryptography

How to Use 🚀

1. Run the Script: Execute the Python script (.py file) in your terminal or IDE.

   python your_script_name.py

2. Enter Master Password: Upon running the script for the first time, it will create a secret.key file for encryption. You will be prompted to enter the master password to authenticate yourself.

   • Important: You should change the hardcoded master password ("masterpass") in the script to a strong, unique password that only you know.

   # Locate this section in the main() function and change "masterpass"
   master_password_attempt = input("Enter master password: ")
   if master_password_attempt != "your_strong_master_password": # Replace "masterpass" here
       print("Incorrect master password. Exiting...")
       return

3. Menu Options: After successful authentication, the menu will appear with the following options:

   • 1. Add password:
     • Enter the username.
     • You'll be asked if you want to generate a secure password (y/n).
     • If 'y', a strong password will be generated, displayed, and saved.
     • If 'n', you'll be prompted to enter a password manually. The script will check its strength (length, lowercase, uppercase, number) before saving. If it's weak, it won't be saved, and you'll see the reason.
   • 2. Check password: Enter a username and password to see if it matches the stored entry.
   • 3. Find password: Enter a username to retrieve and display the decrypted password. Be cautious about using this option in insecure environments.
   • 4. Delete password: Enter a username to remove its password entry from the storage file.
   • 5. Exit: Exit the application.

4. Password Storage:

   • Passwords are encrypted using Fernet symmetric encryption.
   • The unique secret key is generated once and stored in secret.key. Do not lose or share this file! If lost, your passwords cannot be decrypted.
   • Encrypted passwords (along with usernames) are stored line-by-line in passwords.txt.

Security 🔒

• Master Password: Access to the manager is protected by a master password. Choose a strong one and keep it secret. Consider hashing the master password in future versions for better security instead of plain text comparison.
• Encryption: All stored passwords are encrypted using Fernet.
• Key Management: The secret.key file is crucial. Back it up securely. Anyone with access to this key file and the passwords.txt file can decrypt your passwords.
• Password Generation: The generation feature creates passwords with uppercase, lowercase, digits, and symbols, meeting common complexity requirements.
• Decryption Display: The "Find Password" option displays the password in plain text. Be mindful of shoulder surfing or using this feature on compromised systems.

License 📜

This project is licensed under the MIT License - see the LICENSE for more.

---

Original script structure by Robert Mezian, with modifications.