Password Generator with Encryption

This is a simple Python application for generating, encrypting, and decrypting passwords. It uses the cryptography library for encryption and decryption with the Fernet algorithm.

Requirements

• Python 3.x
• cryptography library (install with pip install cryptography)

Features

• Generate random passwords: The program generates passwords with random characters, including letters, digits, and punctuation.
• Encrypt passwords: The program encrypts the generated passwords using the Fernet encryption method.
• Decrypt passwords: The program allows decrypting passwords back to their original form.
• Key management: If the encryption key is missing, it will be automatically generated and saved in a file (key.key). If the key is already present, it will be used for encryption and decryption.

Installation

1. Clone the repository:

   git clone https://github.com/LLR1/Python-Password_Generator.git
   cd Python-Password_Generator

2. Install the necessary dependencies:

   pip install cryptography

Usage

1. Run the script to generate, encrypt, and decrypt a password:

   python password_generator.py

2. The program will ask for the desired password length and then show:

   • The generated password.
   • The encrypted password.
   • The decrypted password.

How It Works

• Password Generation: The program uses the secrets and string modules to generate random passwords that include uppercase and lowercase letters, digits, and punctuation characters.
• Encryption: The password is encrypted using the Fernet symmetric encryption algorithm from the cryptography library.
• Decryption: The program decrypts the password back to its original form using the same encryption key that was used for encryption.
• Key Management:
  • If the key.key file is missing, a new key is generated and saved to the file.
  • If the key.key file already exists, it is used to encrypt and decrypt passwords.

Key Management

• If the key.key file is missing, the program will generate a new encryption key and save it to key.key.
• If the key file already exists, the program will load the existing key to use for encryption and decryption.
• For better security, consider storing the key in an environment variable instead of the file system (especially for production environments).

Example Output

Welcome to the Password Generator with Encryption!
Enter the desired password length: 16
Generated password: Y#5gZ9b8%Nq7Lk@F
Encrypted password: b'gAAAAABlY... (encrypted string)'
Decrypted password: Y#5gZ9b8%Nq7Lk@F