Password Strength Checker Python code | Python Project

 Understanding Password Strength: A Python Implementation

Passwords play a pivotal role in securing our digital presence, and ensuring they are robust is paramount. Creating a robust password involves more than just picking a word or phrase; it requires a combination of characters. To evaluate the strength of a password, a Python script can be employed, analyzing its complexity based on various criteria.

''' Password Strength Checker www.knowledgewithdev.tech ------------------------------------------------------------- ''' import string import getpass def check_password_strength(): password = getpass.getpass('Enter the password: ') strength = 0 remarks = '' lower_count = upper_count = num_count = wspace_count = special_count = 0 for char in list(password): if char in string.ascii_lowercase: lower_count += 1 elif char in string.ascii_uppercase: upper_count += 1 elif char in string.digits: num_count += 1 elif char == ' ': wspace_count += 1 else: special_count += 1 if lower_count >= 1: strength += 1 if upper_count >= 1: strength += 1 if num_count >= 1: strength += 1 if wspace_count >= 1: strength += 1 if special_count >= 1: strength += 1 if strength == 1: remarks = ('That\'s a very bad password.' ' Change it as soon as possible.') elif strength == 2: remarks = ('That\'s a weak password.' ' You should consider using a tougher password.') elif strength == 3: remarks = 'Your password is okay, but it can be improved.' elif strength == 4: remarks = ('Your password is hard to guess.' ' But you could make it even more secure.') elif strength == 5: remarks = ('Now that\'s one hell of a strong password!!!' ' Hackers don\'t have a chance guessing that password!') print('Your password has:-') print(f'{lower_count} lowercase letters') print(f'{upper_count} uppercase letters') print(f'{num_count} digits') print(f'{wspace_count} whitespaces') print(f'{special_count} special characters') print(f'Password Score: {strength / 5}') print(f'Remarks: {remarks}') def check_pwd(another_pw=False): valid = False if another_pw: choice = input( 'Do you want to check another password\'s strength (y/n) : ') else: choice = input( 'Do you want to check your password\'s strength (y/n) : ') while not valid: if choice.lower() == 'y': return True elif choice.lower() == 'n': print('Exiting...') return False else: print('Invalid input...please try again. \n') if __name__ == '__main__': print('===== Welcome to Password Strength Checker =====') check_pw = check_pwd() while check_pw: check_password_strength() check_pw = check_pwd(True) ''' ------------------------------------------------------------ www.knowledgewithdev.tech ------------------------------------------------------------- '''

How It Works

1. User Input: The program begins by prompting the user to input a password using getpass.getpass(), which conceals the password during input for security.
2. Password Analysis: The script then analyzes the entered password character by character. It counts the occurrences of lowercase letters, uppercase letters, digits, whitespaces, and special characters.
3. Strength Calculation: Based on the counts of different character types, the script assigns a strength score to the password. The more diverse the characters, the higher the score.
4. Remarks: After evaluating the password, the program generates remarks regarding its strength, ranging from very weak to very strong, and suggests improvements accordingly.
5. Repeat or Exit: It then prompts the user to check another password or exit the program, providing an option to continue analyzing passwords for their strength.

Usage

1. Running the Program: Upon execution, the user is welcomed and asked if they want to check their password's strength.
2. Input Password: The user enters their password securely (characters are not displayed as they type) and receives an analysis of its strength, including a breakdown of the types of characters present.
3. Feedback and Improvement: Based on the analysis, the program provides feedback on the password's strength and advises on potential improvements.
4. Option to Check Another Password: The user is given the option to check another password or exit the program.

Conclusion

Creating a strong password is crucial in safeguarding personal and sensitive information. This Python script serves as a helpful tool to evaluate password strength based on character diversity. However, it's essential to consider additional factors beyond character types, such as length and uniqueness, when creating robust passwords.