Password Encryption and Decryption Script

This Python script allows you to encrypt and decrypt passwords using the Fernet encryption algorithm and store them securely.

Prerequisites

• Python 3
• cryptography library

You can install the required library using pip:

pip install cryptography

Usage

1. Generate Key: Run the script to generate a key file (key.key) required for encryption and decryption. If the key file already exists, this step is skipped.

2. Encrypt and Save Password: Choose option 1 to enter a username and password. The password will be encrypted using the generated key and saved to the user_data.txt file.

3. Decrypt Password: Choose option 2 to enter a username. The script will retrieve the corresponding encrypted password from the user_data.txt file, decrypt it using the key, and display the decrypted password.

4. Exit: Choose option 3 to exit the script.

File Descriptions

• password_encrypt_decrypt.py: The main Python script containing functions for generating, loading, encrypting, and decrypting passwords.
• key.key: The key file required for encryption and decryption.
• user_data.txt: The file where encrypted usernames and passwords are stored.

Important Notes

• Ensure that you keep the key.key file secure. Without it, you won't be able to decrypt the passwords.
• The script uses Fernet encryption, which provides secure encryption and decryption of passwords. However, it's essential to follow best practices for password management and storage.

Contributors

• Siva Shankar Reddy

License

This project is licensed under the MIT License.