This project implements a PBKDF2-based password generator and password verification system using Python. It allows users to securely hash passwords using the PBKDF2 key derivation function, and then verify those passwords later using the stored hash and salt.

• PBKDF2 Password Hashing: Securely hashes passwords using the PBKDF2 algorithm with HMAC and SHA-256.
• Salt Generation: Random salt generation for each password to ensure that identical passwords don't produce the same hash.
• Password Verification: Verifies input passwords by comparing them with stored hashed passwords.
• User Sign-Up and Login: A simple simulation of user sign-up and login, where passwords are stored as salted hashes.
• File Storage: Stores user credentials (username, salt, and password hash) in a JSON file.

• hashlib: Used for PBKDF2 password hashing.
• os: For generating random salts.
• json: To store and load user credentials.
• Python 3.x: The project is built using Python 3.x.

1. Clone the repository:

   git clone [email protected]:sumanth-0/100LinesOfPythonCode.git

2. No external libraries are required to install. This project works with Python's standard library.

3. Run the program:

   python password_generator.py

• After running the program, you will be presented with a simple menu:
  • Sign Up: Create a new user by entering a username and password. The password is hashed and stored securely in the users.json file.
  • Log In: Enter your username and password to verify the credentials stored in the system.
  • Exit: Quit the program.

1) Sign Up
2) Log In
3) Exit
Choose an option: 1
Enter a username: alice
Enter a password: my_secure_password
User alice successfully registered!

1) Sign Up
2) Log In
3) Exit
Choose an option: 2
Enter your username: alice
Enter your password: my_secure_password
Welcome back, alice! Login successful.

• The generate_pbkdf2_password function creates a salted hash of the user's password using the PBKDF2 algorithm with 100,000 iterations.
• The generated hash and salt are stored in a users.json file.
• When the user attempts to log in, the stored salt is retrieved, and the entered password is hashed again and compared to the stored hash to verify its validity.

This project is licensed under the MIT License.

Contributions are welcome! Please fork this repository and submit a pull request with your improvements.

For any queries or issues, please reach out at [email protected].