30 def test_ed448_unsupported(backend):  argument
59     def test_sign_input(self, vector, backend):  argument
79     def test_invalid_signature(self, backend):  argument
88     def test_generate(self, backend):  argument
100     def test_pub_priv_bytes_raw(self, vector, backend):  argument
160         self, encoding, fmt, encryption, passwd, load_func, backend  argument
167     def test_invalid_type_public_bytes(self, backend):  argument
171     def test_invalid_type_private_bytes(self, backend):  argument
175     def test_invalid_length_from_public_bytes(self, backend):  argument
181     def test_invalid_length_from_private_bytes(self, backend):  argument
187     def test_invalid_private_bytes(self, backend):  argument
210     def test_invalid_public_bytes(self, backend):  argument
228     def test_buffer_protocol(self, backend):  argument
240     def test_malleability(self, backend):  argument