import random

def generate_password(length=12):
    characters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!@#$%^&*()"
    password = ''.join(random.choice(characters) for _ in range(length))
    return password

print(generate_password())

def generate_custom_password(length=12, custom_chars="abc123!@#"):
    password = ''.join(random.choice(custom_chars) for _ in range(length))
    return password

print(generate_custom_password())

import math

def calculate_entropy(password, characters):
    L = len(password)
    N = len(characters)
    entropy = L * math.log2(N)
    return entropy

password = generate_password()
characters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!@#$%^&*()"
print(f"Password: {password}")
print(f"Entropy: {calculate_entropy(password, characters)} bits")

import re

def check_password_strength(password):
    if len(password) < 12:
        return "Weak: Password is too short."
    
    if not re.search("[a-z]", password):
        return "Weak: Password does not contain lowercase letters."
    
    if not re.search("[A-Z]", password):
        return "Weak: Password does not contain uppercase letters."
    
    if not re.search("[0-9]", password):
        return "Weak: Password does not contain digits."
    
    if not re.search("[!@#$%^&*()]", password):
        return "Weak: Password does not contain special characters."
    
    return "Strong: Password meets all criteria."

print(check_password_strength(password))

def generate_registration_password(length=12):
    characters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!@#$%^&*()"
    password = ''.join(random.choice(characters) for _ in range(length))
    return password

def register_user(username):
    password = generate_registration_password()
    print(f"User {username} registered with password: {password}")
    # 這里可以添加將用戶名和密碼保存到數(shù)據(jù)庫的代碼

register_user("john_doe")

def generate_backup_key(length=32):
    characters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
    key = ''.join(random.choice(characters) for _ in range(length))
    return key

backup_key = generate_backup_key()
print(f"Backup key generated: {backup_key}")
# 這里可以添加使用備份密鑰加密備份數(shù)據(jù)的代碼

import concurrent.futures

def generate_multiple_passwords(num_passwords, length=12):
    characters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!@#$%^&*()"
    with concurrent.futures.ThreadPoolExecutor() as executor:
        passwords = list(executor.map(lambda _: ''.join(random.choice(characters) for _ in range(length)), range(num_passwords)))
    return passwords

passwords = generate_multiple_passwords(10)
for i, password in enumerate(passwords):
    print(f"Password {i+1}: {password}")

import json

def save_passwords(passwords, filename="passwords.json"):
    with open(filename, "w") as file:
        json.dump(passwords, file)

def load_passwords(filename="passwords.json"):
    with open(filename, "r") as file:
        passwords = json.load(file)
    return passwords

def manage_passwords():
    passwords = {}
    while True:
        print("1. Generate Password")
        print("2. Save Passwords")
        print("3. Load Passwords")
        print("4. Exit")
        choice = input("Enter your choice: ")
        
        if choice == "1":
            length = int(input("Enter password length: "))
            password = generate_password(length)
            username = input("Enter username: ")
            passwords[username] = password
            print(f"Password generated for {username}: {password}")
        
        elif choice == "2":
            save_passwords(passwords)
            print("Passwords saved successfully.")
        
        elif choice == "3":
            passwords = load_passwords()
            print("Passwords loaded successfully.")
            for username, password in passwords.items():
                print(f"{username}: {password}")
        
        elif choice == "4":
            break
        
        else:
            print("Invalid choice. Please try again.")

manage_passwords()