Python fernet无效令牌

Question

嘿，伙计们，我已经研究这个问题好几天了，使用bcrypt和其他方法在mysql服务器上存储加密的密码。似乎什么都不起作用，而且似乎没有人有解决这个问题的办法。目前正在使用fernet作为bcrypt的替代品，但它仍然不起作用。我创建了一个要加密的类：

class PwdCipher:
    def generate_key(self,usr:str):
        if os.path.isfile("pass_keys/"+usr+".key"):
            return 1
        else:
            key = Fernet.generate_key()
            with open("pass_keys/"+usr+".key","wb") as key_file:
                key_file.write(key)
            return 0

    def load_key(self,usr:str):
        if os.path.isfile("pass_keys/"+usr+".key"):
            return open("pass_keys/"+usr+".key","rb").read()
        else:
            return 1

    def encrypt(self,usr:str,pwd:str):
        if self.generate_key(usr) == 0:
            key = self.load_key(usr)
            encoded_pwd = pwd.encode()
            f = Fernet(key)
            return f.encrypt(encoded_pwd)
        else:
            return 1

    def decrypt(self,usr:str,encrypted_pwd):
        if self.load_key(usr) == 1:
            return 1
        else:
            key = self.load_key(usr)
            f = Fernet(key)
            encoded_pwd = encrypted_pwd.encode()
            decrypted_msg = f.decrypt(encoded_pwd)
            print(decrypted_msg)

它是由以下代码调用的：

    def root_task_handler(self,task):
        if task[0][2:] ==  "create_user":
            usr = task[1]
            pwd = task[2]
            email = task[3][:-1]
            encrypted_pwd = self.pwd_cipher.encrypt(usr,pwd)
            if encrypted_pwd == 1:
                print("[" + str(datetime.datetime.now()) + " - INFO] " + "USR KEY ALREADY EXISTS ...ABORTING " + usr)
            else:
                if self.query.create_user(usr,encrypted_pwd,email) == 0:
                    print("[" + str(datetime.datetime.now()) + " - INFO] " + "ROOT USER CREATED ACCOUNT " + usr)
        elif task[0][2:] ==  "delete_user":
            usr = task[1]
            pwd = task[2][:-1]
            encrypted_pwd = self.query.get_password(usr)
            db_pwd = self.pwd_cipher.decrypt(usr,encrypted_pwd)

在这一点上，我恳求一个答案。如果你知道什么，请让我知道！我将非常感谢这一点：)

Answer 1

我对我的问题没有答案。但一种解决方案是只加密MySql中的密码。唯一有效的方法就是。