test_ssl.py 文件源码

def test_passwd_callback_too_long(self):
        """
        If the passphrase returned by the passphrase callback returns a string
        longer than the indicated maximum length, it is truncated.
        """
        # A priori knowledge!
        passphrase = b("x") * 1024
        pemFile = self._write_encrypted_pem(passphrase)
        def passphraseCallback(maxlen, verify, extra):
            assert maxlen == 1024
            return passphrase + b("y")

        context = Context(TLSv1_METHOD)
        context.set_passwd_cb(passphraseCallback)
        # This shall succeed because the truncated result is the correct
        # passphrase.
        context.use_privatekey_file(pemFile)