mysql - 无法解密从mysql中选择

Question

我正在尝试从 mysql 中选择 fernet 加密密码并对其进行解密，但是当我执行代码时出现以下错误：

raise InvalidToken
cryptography.fernet.InvalidToken

这是我的功能，我在这里选择数据，然后在没有“）”“]”等的情况下使其看起来不错，然后我将其转换为字节并尝试解密：

def select():
  email = entry1.get()
  print(email)

  passw = entry2.get()
  print(passw)

  mydb = mysql.connector.connect(
    host="localhost",
    user="root",
    password="",
    database="camp"
  )

  mycursor = mydb.cursor()

  mycursor.execute("SELECT password FROM campuser WHERE username =%s", (email,))

  myresult = mycursor.fetchall()
  resu = str(myresult)
  resusplit = resu.split(",")[0]
  resurep = resusplit.replace("[(", "").replace("'", "").replace(")]", "")
  passwnc= resurep
  passwbyte = bytes(passwnc, 'utf-8')
  print(a)


  

  if(message==myresult):
      print("ok")



  for x in myresult:
    print(x)

  def decrypt():
      f = Fernet(key)
      decrypted = f.decrypt(passwbyte)  # Decrypt the bytes. The returning object is of type bytes
      text=bytes(decrypted).decode("utf-8")
      print(text)
  decrypt()