generate_password_verify.py

# Problem: Secure Password Generator

#

# Create a Python program that generates a secure password based on user input.

# The program should ask the user for the desired length and whether they want to include:

# - Uppercase letters

# - Lowercase letters

# - Numbers

# - Special characters

#

# The program should then generate a random password that meets the user's criteria.

#

# Constraints:

# - The minimum password length is 6 characters.

# - The maximum password length is 64 characters.

# - The program should handle invalid inputs gracefully.

import random

import string

def generate_password(length, use_uppercase, use_lowercase, use_numbers, use_special):

    if length < 6 or length > 64:

        raise ValueError("Password length must be between 6 and 64 characters.")

   

    char_pool = ""

    if use_uppercase:

        char_pool += string.ascii_uppercase

    if use_lowercase:

        char_pool += string.ascii_lowercase

    if use_numbers:

        char_pool += string.digits

    if use_special:

        char_pool += string.punctuation

   

    if not char_pool:

        raise ValueError("At least one character type must be selected.")

   

    return "".join(random.choice(char_pool) for _ in range(length))

def verify_password(password, use_uppercase, use_lowercase, use_numbers, use_special):

    if len(password) < 6 or len(password) > 64:

        return False

   

    has_upper = any(char in string.ascii_uppercase for char in password) if use_uppercase else True

    has_lower = any(char in string.ascii_lowercase for char in password) if use_lowercase else True

    has_digit = any(char in string.digits for char in password) if use_numbers else True

    has_special = any(char in string.punctuation for char in password) if use_special else True

   

    return has_upper and has_lower and has_digit and has_special

# Example usage

if __name__ == "__main__":

    try:

        length = int(input("Enter password length (6-64): "))

        use_uppercase = input("Include uppercase letters? (y/n): ").strip().lower() == "y"

        use_lowercase = input("Include lowercase letters? (y/n): ").strip().lower() == "y"

        use_numbers = input("Include numbers? (y/n): ").strip().lower() == "y"

        use_special = input("Include special characters? (y/n): ").strip().lower() == "y"

       

        password = generate_password(length, use_uppercase, use_lowercase, use_numbers, use_special)

        print(f"Generated password: {password}")

       

        print("Password verification result:", verify_password(password, use_uppercase, use_lowercase, use_numbers, use_special))

    except ValueError as e:

        print(f"Error: {e}")