'Verifies a message against a signature.
Args:
message: string or bytes, The message to verify. If string, will be
encoded to bytes as utf-8.
signature: string or bytes, The signature on the message.
Returns:
True if message was signed by the private key associated with the
public key that this object was constructed with.'

def verify(self, message, signature):

    message = _helpers._to_bytes(message, encoding='utf-8')
    return PKCS1_v1_5.new(self._pubkey).verify(SHA256.new(message), signature)
