signature_helper.py 文件源码

def __init__(self, public):
        """ set public key
        :param public: der or public Object
        """
        if isinstance(public, bytes):
            self.__public_key = serialization.load_der_public_key(
                public,
                backend=default_backend()
            )
        elif isinstance(public, EllipticCurvePublicKey):
            self.__public_key = public
        else:
            raise ValueError("public must bytes or public_key Object")