def fp(saty):
    from cryptography.fernet import Fernet
    import base64
    F=Fernet(base64.b64encode(saty.encode()[:32]))
    class c:
        def up(te): return F.crypt(te)
        def down(te): return F.decrypt(te)
        def string(te):
            if isinstance(te,str):
                return F.up(te.encode())
            else:
                return F.down(te).decode()
    return c