Method test_vectors_invalid

tests/hazmat/primitives/test_aead.py:1355–1386

(self, backend, subtests)

                assert computed_pt == pt

    def test_vectors_invalid(self, backend, subtests):
        vectors = _load_all_params(
            os.path.join("ciphers", "AES", "GCM-SIV"),
            [
                "openssl.txt",
                "aes-192-gcm-siv.txt",
            ],
            load_nist_vectors,
        )
        for vector in vectors:
            with subtests.test():
                key = binascii.unhexlify(vector["key"])
                nonce = binascii.unhexlify(vector["iv"])
                aad = binascii.unhexlify(vector.get("aad", b""))
                ct = binascii.unhexlify(vector["ciphertext"])

                # AWS-LC and BoringSSL only support AES-GCM-SIV with
                # 128- and 256-bit keys
                if len(key) == 24 and (
                    rust_openssl.CRYPTOGRAPHY_IS_BORINGSSL
                    or rust_openssl.CRYPTOGRAPHY_IS_AWSLC
                ):
                    continue

                aesgcmsiv = AESGCMSIV(key)
                with pytest.raises(InvalidTag):
                    badkey = AESGCMSIV(AESGCMSIV.generate_key(256))
                    badkey.decrypt(nonce, ct, aad)
                with pytest.raises(InvalidTag):
                    aesgcmsiv.decrypt(nonce, ct, b"nonsense")
                with pytest.raises(InvalidTag):
                    aesgcmsiv.decrypt(nonce, b"nonsense", aad)

    @pytest.mark.parametrize(
        ("nonce", "data", "associated_data"),