30 def test_x25519_unsupported(backend):  argument
53     def test_rfc7748(self, vector, backend):  argument
62     def test_rfc7748_1000_iteration(self, backend):  argument
83     def test_null_shared_key_raises_error(self, backend):  argument
98     def test_public_bytes_bad_args(self, backend):  argument
132     def test_pub_priv_bytes_raw(self, private_bytes, public_bytes, backend):  argument
156     def test_generate(self, backend):  argument
161     def test_invalid_type_exchange(self, backend):  argument
166     def test_invalid_length_from_public_bytes(self, backend):  argument
173     def test_invalid_length_from_private_bytes(self, backend):  argument
180     def test_invalid_private_bytes(self, backend):  argument
203     def test_invalid_public_bytes(self, backend):  argument
255         self, encoding, fmt, encryption, passwd, load_func, backend  argument
262     def test_buffer_protocol(self, backend):  argument