使用Python的密钥导出函数

# import utility for Base64 encoding
import base64
# import Fernet
from cryptography.fernet import Fernet
from cryptography.hazmat.primitives.kdf.pbkdf2 import PBKDF2HMAC
from cryptography.hazmat.primitives import hashes
# import getpass for secure input reading
from getpass import getpass
# read plain text password
plain_text_password: str = getpass(prompt='Password: ')
# convert the password to bytes
password_bytes = plain_text_password.encode('utf-8')
# some salt value for demonstration, use a secure random value in practice
salt = b'\x00' * 16
# use PBKDF2HMAC to derive a secure key from the password
kdf = PBKDF2HMAC(
    algorithm=hashes.SHA256(),
    length=32,
    salt=salt,
    iterations=100000
)
# encode the derived key with Base64
key = base64.urlsafe_b64encode(kdf.derive(password_bytes))
# create a Fernet instance with the derived key
fernet = Fernet(key)
# data to be encrypted
data = b'Some secret data'
# encrypt the data
encrypted_data = fernet.encrypt(data)
# decrypt the data
decrypted_data = fernet.decrypt(encrypted_data)
# print the decrypted data
print(f"Decrypted text: {decrypted_data.decode()}")