Esempio n. 1
0
    def test_gen_without_hash_name(self):
        config = [(b'test', b'secret')]

        ext = psk_ext_gen(config)

        self.assertIsInstance(ext, PreSharedKeyExtension)
        self.assertEqual(len(ext.identities), 1)
        self.assertEqual(ext.binders, [bytearray(32)])
        self.assertEqual(ext.identities[0].identity, b'test')
Esempio n. 2
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    def test_gen(self):
        config = [(b'test', b'secret', 'sha256'),
                  (b'example', b'secret', 'sha384')]

        ext = psk_ext_gen(config)

        self.assertIsInstance(ext, PreSharedKeyExtension)
        self.assertEqual(len(ext.identities), 2)
        self.assertEqual(ext.binders, [bytearray(32), bytearray(48)])
        self.assertEqual(ext.identities[0].identity, b'test')
        self.assertEqual(ext.identities[1].identity, b'example')
Esempio n. 3
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    def test_gen_with_wrong_number_of_config_parameters(self):
        config = [(b'test', b'secret', 'sha256', 'extra')]

        with self.assertRaises(ValueError):
            psk_ext_gen(config)
Esempio n. 4
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    def test_gen_with_wrong_hash_name(self):
        config = [(b'test', b'secret', 'sha512')]

        with self.assertRaises(ValueError):
            psk_ext_gen(config)
Esempio n. 5
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    def test_gen_with_empty_name(self):
        config = [(b'', b'secret', 'sha256')]

        with self.assertRaises(ValueError):
            psk_ext_gen(config)
Esempio n. 6
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def main():
    host = "localhost"
    port = 4433
    num_limit = None
    run_exclude = set()
    psk_prf = "sha256"
    psk_secret = b'\xaa'
    psk_ident = b'test'

    argv = sys.argv[1:]
    opts, args = getopt.getopt(argv, "h:p:e:n:",
                               ["help", "psk=", "psk-iden=", "psk-sha384"])
    for opt, arg in opts:
        if opt == '-h':
            host = arg
        elif opt == '-p':
            port = int(arg)
        elif opt == '-e':
            run_exclude.add(arg)
        elif opt == '-n':
            num_limit = int(arg)
        elif opt == '--help':
            help_msg()
            sys.exit(0)
        elif opt == '--psk':
            psk_secret = a2b_hex(arg)
        elif opt == '--psk-iden':
            psk_ident = compatAscii2Bytes(arg)
        elif opt == '--psk-sha384':
            psk_prf = "sha384"
        else:
            raise ValueError("Unknown option: {0}".format(opt))

    if args:
        run_only = set(args)
    else:
        run_only = None

    conversations = {}

    conversation = Connect(host, port)
    node = conversation
    ciphers = []
    if psk_prf == "sha256":
        ciphers.append(CipherSuite.TLS_AES_128_GCM_SHA256)
    else:
        ciphers.append(CipherSuite.TLS_AES_256_GCM_SHA384)
    ext = OrderedDict()
    ext[ExtensionType.supported_versions] = SupportedVersionsExtension()\
        .create([TLS_1_3_DRAFT, (3, 3)])
    ext[ExtensionType.psk_key_exchange_modes] = PskKeyExchangeModesExtension()\
        .create([PskKeyExchangeMode.psk_ke])
    psk_settings = [(psk_ident, psk_secret, psk_prf)]
    ext[ExtensionType.pre_shared_key] = psk_ext_gen(psk_settings)
    mods = []
    mods.append(psk_ext_updater(psk_settings))
    node = node.add_child(
        ClientHelloGenerator(ciphers, extensions=ext, modifiers=mods))
    ext = {}
    ext[ExtensionType.supported_versions] = srv_ext_handler_supp_vers
    ext[ExtensionType.pre_shared_key] = gen_srv_ext_handler_psk(psk_settings)
    node = node.add_child(ExpectServerHello(extensions=ext))
    node = node.add_child(ExpectChangeCipherSpec())
    node = node.add_child(ExpectEncryptedExtensions())
    node = node.add_child(ExpectFinished())
    node = node.add_child(FinishedGenerator())
    node = node.add_child(
        ApplicationDataGenerator(bytearray(b"GET / HTTP/1.0\r\n\r\n")))

    # This message is optional and may show up 0 to many times
    cycle = ExpectNewSessionTicket()
    node = node.add_child(cycle)
    node.add_child(cycle)

    node.next_sibling = ExpectApplicationData()
    node = node.next_sibling.add_child(
        AlertGenerator(AlertLevel.warning, AlertDescription.close_notify))

    node = node.add_child(ExpectAlert())
    node.next_sibling = ExpectClose()
    conversations["sanity"] = conversation

    # run the conversation
    good = 0
    bad = 0
    failed = []
    if not num_limit:
        num_limit = len(conversations)

    # make sure that sanity test is run first and last
    # to verify that server was running and kept running throught
    sanity_test = ('sanity', conversations['sanity'])
    ordered_tests = chain([sanity_test],
                          islice(
                              filter(lambda x: x[0] != 'sanity',
                                     conversations.items()), num_limit),
                          [sanity_test])

    for c_name, c_test in ordered_tests:
        if run_only and c_name not in run_only or c_name in run_exclude:
            continue
        print("{0} ...".format(c_name))

        runner = Runner(c_test)

        res = True
        try:
            runner.run()
        except Exception:
            print("Error while processing")
            print(traceback.format_exc())
            res = False

        if res:
            good += 1
            print("OK\n")
        else:
            bad += 1
            failed.append(c_name)

    print("Basic script for psk_ke key exchange in TLS 1.3")
    print("Check if server supports a PSK handshake without use of DHE key")
    print("exchange.")
    print("version: {0}\n".format(version))

    print("Test end")
    print("successful: {0}".format(good))
    print("failed: {0}".format(bad))
    failed_sorted = sorted(failed, key=natural_sort_keys)
    print("  {0}".format('\n  '.join(repr(i) for i in failed_sorted)))

    if bad > 0:
        sys.exit(1)
def main():
    host = "localhost"
    port = 4433
    num_limit = None
    run_exclude = set()
    expected_failures = {}
    last_exp_tmp = None
    psk_prf = "sha256"
    psk_secret = b'\xaa'
    psk_ident = b'test'

    argv = sys.argv[1:]
    opts, args = getopt.getopt(argv, "h:p:e:x:X:n:",
                               ["help", "psk=", "psk-iden=", "psk-sha384"])
    for opt, arg in opts:
        if opt == '-h':
            host = arg
        elif opt == '-p':
            port = int(arg)
        elif opt == '-e':
            run_exclude.add(arg)
        elif opt == '-x':
            expected_failures[arg] = None
            last_exp_tmp = str(arg)
        elif opt == '-X':
            if not last_exp_tmp:
                raise ValueError("-x has to be specified before -X")
            expected_failures[last_exp_tmp] = str(arg)
        elif opt == '-n':
            num_limit = int(arg)
        elif opt == '--help':
            help_msg()
            sys.exit(0)
        elif opt == '--psk':
            psk_secret = a2b_hex(arg)
        elif opt == '--psk-iden':
            psk_ident = compatAscii2Bytes(arg)
        elif opt == '--psk-sha384':
            psk_prf = "sha384"
        else:
            raise ValueError("Unknown option: {0}".format(opt))

    if args:
        run_only = set(args)
    else:
        run_only = None

    conversations = {}

    conversation = Connect(host, port)
    node = conversation
    ciphers = []
    if psk_prf == "sha256":
        ciphers.append(CipherSuite.TLS_AES_128_GCM_SHA256)
    else:
        ciphers.append(CipherSuite.TLS_AES_256_GCM_SHA384)
    ext = OrderedDict()
    ext[ExtensionType.supported_versions] = SupportedVersionsExtension()\
        .create([TLS_1_3_DRAFT, (3, 3)])
    groups = [GroupName.secp256r1]
    key_shares = []
    for group in groups:
        key_shares.append(key_share_gen(group))
    ext[ExtensionType.key_share] = ClientKeyShareExtension().create(key_shares)
    ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\
        .create(groups)
    ext[ExtensionType.psk_key_exchange_modes] = PskKeyExchangeModesExtension()\
        .create([PskKeyExchangeMode.psk_dhe_ke])
    psk_settings = [(psk_ident, psk_secret, psk_prf)]
    ext[ExtensionType.pre_shared_key] = psk_ext_gen(psk_settings)
    mods = []
    mods.append(psk_ext_updater(psk_settings))
    node = node.add_child(
        ClientHelloGenerator(ciphers, extensions=ext, modifiers=mods))
    ext = {}
    ext[ExtensionType.supported_versions] = srv_ext_handler_supp_vers
    ext[ExtensionType.pre_shared_key] = gen_srv_ext_handler_psk(psk_settings)
    ext[ExtensionType.key_share] = srv_ext_handler_key_share
    node = node.add_child(ExpectServerHello(extensions=ext))
    node = node.add_child(ExpectChangeCipherSpec())
    node = node.add_child(ExpectEncryptedExtensions())
    node = node.add_child(ExpectFinished())
    node = node.add_child(FinishedGenerator())
    node = node.add_child(
        ApplicationDataGenerator(bytearray(b"GET / HTTP/1.0\r\n\r\n")))

    # This message is optional and may show up 0 to many times
    cycle = ExpectNewSessionTicket()
    node = node.add_child(cycle)
    node.add_child(cycle)

    node.next_sibling = ExpectApplicationData()
    node = node.next_sibling.add_child(
        AlertGenerator(AlertLevel.warning, AlertDescription.close_notify))

    node = node.add_child(ExpectAlert())
    node.next_sibling = ExpectClose()
    conversations["sanity"] = conversation

    # test with FFDHE
    conversation = Connect(host, port)
    node = conversation
    ciphers = []
    if psk_prf == "sha256":
        ciphers.append(CipherSuite.TLS_AES_128_GCM_SHA256)
    else:
        ciphers.append(CipherSuite.TLS_AES_256_GCM_SHA384)
    ext = OrderedDict()
    ext[ExtensionType.supported_versions] = SupportedVersionsExtension()\
        .create([TLS_1_3_DRAFT, (3, 3)])
    groups = [GroupName.ffdhe2048]
    key_shares = []
    for group in groups:
        key_shares.append(key_share_gen(group))
    ext[ExtensionType.key_share] = ClientKeyShareExtension().create(key_shares)
    ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\
        .create(groups)
    ext[ExtensionType.psk_key_exchange_modes] = PskKeyExchangeModesExtension()\
        .create([PskKeyExchangeMode.psk_dhe_ke])
    psk_settings = [(psk_ident, psk_secret, psk_prf)]
    ext[ExtensionType.pre_shared_key] = psk_ext_gen(psk_settings)
    mods = []
    mods.append(psk_ext_updater(psk_settings))
    node = node.add_child(
        ClientHelloGenerator(ciphers, extensions=ext, modifiers=mods))
    ext = {}
    ext[ExtensionType.supported_versions] = srv_ext_handler_supp_vers
    ext[ExtensionType.pre_shared_key] = gen_srv_ext_handler_psk(psk_settings)
    ext[ExtensionType.key_share] = srv_ext_handler_key_share
    node = node.add_child(ExpectServerHello(extensions=ext))
    node = node.add_child(ExpectChangeCipherSpec())
    node = node.add_child(ExpectEncryptedExtensions())
    node = node.add_child(ExpectFinished())
    node = node.add_child(FinishedGenerator())
    node = node.add_child(
        ApplicationDataGenerator(bytearray(b"GET / HTTP/1.0\r\n\r\n")))

    # This message is optional and may show up 0 to many times
    cycle = ExpectNewSessionTicket()
    node = node.add_child(cycle)
    node.add_child(cycle)

    node.next_sibling = ExpectApplicationData()
    node = node.next_sibling.add_child(
        AlertGenerator(AlertLevel.warning, AlertDescription.close_notify))

    node = node.add_child(ExpectAlert())
    node.next_sibling = ExpectClose()
    conversations["ffdhe2048"] = conversation

    # test with x25519
    conversation = Connect(host, port)
    node = conversation
    ciphers = []
    if psk_prf == "sha256":
        ciphers.append(CipherSuite.TLS_AES_128_GCM_SHA256)
    else:
        ciphers.append(CipherSuite.TLS_AES_256_GCM_SHA384)
    ext = OrderedDict()
    ext[ExtensionType.supported_versions] = SupportedVersionsExtension()\
        .create([TLS_1_3_DRAFT, (3, 3)])
    groups = [GroupName.x25519]
    key_shares = []
    for group in groups:
        key_shares.append(key_share_gen(group))
    ext[ExtensionType.key_share] = ClientKeyShareExtension().create(key_shares)
    ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\
        .create(groups)
    ext[ExtensionType.psk_key_exchange_modes] = PskKeyExchangeModesExtension()\
        .create([PskKeyExchangeMode.psk_dhe_ke])
    psk_settings = [(psk_ident, psk_secret, psk_prf)]
    ext[ExtensionType.pre_shared_key] = psk_ext_gen(psk_settings)
    mods = []
    mods.append(psk_ext_updater(psk_settings))
    node = node.add_child(
        ClientHelloGenerator(ciphers, extensions=ext, modifiers=mods))
    ext = {}
    ext[ExtensionType.supported_versions] = srv_ext_handler_supp_vers
    ext[ExtensionType.pre_shared_key] = gen_srv_ext_handler_psk(psk_settings)
    ext[ExtensionType.key_share] = srv_ext_handler_key_share
    node = node.add_child(ExpectServerHello(extensions=ext))
    node = node.add_child(ExpectChangeCipherSpec())
    node = node.add_child(ExpectEncryptedExtensions())
    node = node.add_child(ExpectFinished())
    node = node.add_child(FinishedGenerator())
    node = node.add_child(
        ApplicationDataGenerator(bytearray(b"GET / HTTP/1.0\r\n\r\n")))

    # This message is optional and may show up 0 to many times
    cycle = ExpectNewSessionTicket()
    node = node.add_child(cycle)
    node.add_child(cycle)

    node.next_sibling = ExpectApplicationData()
    node = node.next_sibling.add_child(
        AlertGenerator(AlertLevel.warning, AlertDescription.close_notify))

    node = node.add_child(ExpectAlert())
    node.next_sibling = ExpectClose()
    conversations["x25519"] = conversation

    # run the conversation
    good = 0
    bad = 0
    xfail = 0
    xpass = 0
    failed = []
    xpassed = []
    if not num_limit:
        num_limit = len(conversations)

    # make sure that sanity test is run first and last
    # to verify that server was running and kept running throughout
    sanity_tests = [('sanity', conversations['sanity'])]
    if run_only:
        if num_limit > len(run_only):
            num_limit = len(run_only)
        regular_tests = [(k, v) for k, v in conversations.items()
                         if k in run_only]
    else:
        regular_tests = [(k, v) for k, v in conversations.items()
                         if (k != 'sanity') and k not in run_exclude]
    sampled_tests = sample(regular_tests, min(num_limit, len(regular_tests)))
    ordered_tests = chain(sanity_tests, sampled_tests, sanity_tests)

    for c_name, c_test in ordered_tests:
        if run_only and c_name not in run_only or c_name in run_exclude:
            continue
        print("{0} ...".format(c_name))

        runner = Runner(c_test)

        res = True
        exception = None
        try:
            runner.run()
        except Exception as exp:
            exception = exp
            print("Error while processing")
            print(traceback.format_exc())
            res = False

        if c_name in expected_failures:
            if res:
                xpass += 1
                xpassed.append(c_name)
                print("XPASS-expected failure but test passed\n")
            else:
                if expected_failures[c_name] is not None and  \
                    expected_failures[c_name] not in str(exception):
                    bad += 1
                    failed.append(c_name)
                    print("Expected error message: {0}\n".format(
                        expected_failures[c_name]))
                else:
                    xfail += 1
                    print("OK-expected failure\n")
        else:
            if res:
                good += 1
                print("OK\n")
            else:
                bad += 1
                failed.append(c_name)

    print("Basic script for psk_dhe_ke key exchange in TLS 1.3")
    print("Check if server supports a PSK handshake with use of DHE key")
    print("exchange.")

    print("Test end")
    print(20 * '=')
    print("version: {0}".format(version))
    print(20 * '=')
    print("TOTAL: {0}".format(len(sampled_tests) + 2 * len(sanity_tests)))
    print("SKIP: {0}".format(
        len(run_exclude.intersection(conversations.keys()))))
    print("PASS: {0}".format(good))
    print("XFAIL: {0}".format(xfail))
    print("FAIL: {0}".format(bad))
    print("XPASS: {0}".format(xpass))
    print(20 * '=')
    sort = sorted(xpassed, key=natural_sort_keys)
    if len(sort):
        print("XPASSED:\n\t{0}".format('\n\t'.join(repr(i) for i in sort)))
    sort = sorted(failed, key=natural_sort_keys)
    if len(sort):
        print("FAILED:\n\t{0}".format('\n\t'.join(repr(i) for i in sort)))

    if bad or xpass:
        sys.exit(1)
Esempio n. 8
0
def main():
    host = "localhost"
    port = 4433
    num_limit = None
    run_exclude = set()
    expected_failures = {}
    last_exp_tmp = None
    dhe = False
    ocsp = False

    argv = sys.argv[1:]
    opts, args = getopt.getopt(argv, "h:p:e:x:X:n:d", ["help", "ocsp-enabled"])
    for opt, arg in opts:
        if opt == '-h':
            host = arg
        elif opt == '-p':
            port = int(arg)
        elif opt == '-e':
            run_exclude.add(arg)
        elif opt == '-x':
            expected_failures[arg] = None
            last_exp_tmp = str(arg)
        elif opt == '-X':
            if not last_exp_tmp:
                raise ValueError("-x has to be specified before -X")
            expected_failures[last_exp_tmp] = str(arg)
        elif opt == '-n':
            num_limit = int(arg)
        elif opt == '-d':
            dhe = True
        elif opt == '--ocsp-enabled':
            ocsp = True
        elif opt == '--help':
            help_msg()
            sys.exit(0)
        else:
            raise ValueError("Unknown option: {0}".format(opt))

    if args:
        run_only = set(args)
    else:
        run_only = None

    conversations = {}

    conversation = Connect(host, port)
    node = conversation
    if dhe:
        ext = {}
        groups = [GroupName.secp256r1, GroupName.ffdhe2048]
        ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\
            .create(groups)
        ext[ExtensionType.signature_algorithms] = \
            SignatureAlgorithmsExtension().create(SIG_ALL)
        ext[ExtensionType.signature_algorithms_cert] = \
            SignatureAlgorithmsCertExtension().create(SIG_ALL)
        ciphers = [
            CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
            CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
            CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA,
            CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV
        ]
    else:
        ext = None
        ciphers = [
            CipherSuite.TLS_RSA_WITH_AES_128_CBC_SHA,
            CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV
        ]
    node = node.add_child(ClientHelloGenerator(ciphers, extensions=ext))
    node = node.add_child(ExpectServerHello(description="first"))
    node = node.add_child(ExpectCertificate())
    if dhe:
        node = node.add_child(ExpectServerKeyExchange())
    node = node.add_child(ExpectServerHelloDone())
    node = node.add_child(ClientKeyExchangeGenerator())
    node = node.add_child(ChangeCipherSpecGenerator())
    node = node.add_child(FinishedGenerator())
    node = node.add_child(ExpectChangeCipherSpec())
    node = node.add_child(ExpectFinished())
    node = node.add_child(
        ApplicationDataGenerator(bytearray(b"GET / HTTP/1.0\r\n\r\n")))
    node = node.add_child(ExpectApplicationData())
    node = node.add_child(
        AlertGenerator(AlertLevel.warning, AlertDescription.close_notify))
    node = node.add_child(ExpectAlert())
    node.next_sibling = ExpectClose()
    conversations["sanity"] = conversation

    # sanity renegotiation test case
    conversation = Connect(host, port)
    node = conversation
    ext = OrderedDict()
    # TODO add session_ticket
    ext[ExtensionType.signature_algorithms] = \
        SignatureAlgorithmsExtension().create(SIG_ALL)
    ext[ExtensionType.signature_algorithms_cert] = \
        SignatureAlgorithmsCertExtension().create(SIG_ALL)
    groups = [GroupName.secp256r1, GroupName.ffdhe2048]
    ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\
        .create(groups)
    ext[ExtensionType.extended_master_secret] = AutoEmptyExtension()
    ext[ExtensionType.key_share] = key_share_ext_gen([GroupName.secp256r1])
    ext[ExtensionType.alpn] = \
        ALPNExtension().create([bytearray(b'http/1.1')])
    ext[ExtensionType.ec_point_formats] = \
        ECPointFormatsExtension().create([
            ECPointFormat.ansiX962_compressed_prime,
            ECPointFormat.ansiX962_compressed_char2,
            ECPointFormat.uncompressed])
    # 18 - signed_certificate_timestamp
    ext[18] = AutoEmptyExtension()
    ext[ExtensionType.status_request] = \
        StatusRequestExtension().create()
    ext[ExtensionType.post_handshake_auth] = AutoEmptyExtension()
    # yes, don't include TLS 1.3, as we want to be able to renegotiate...
    ext[ExtensionType.supported_versions] = SupportedVersionsExtension()\
        .create([(3, 3), (3, 2)])
    ext[ExtensionType.psk_key_exchange_modes] = \
        PskKeyExchangeModesExtension().create(
            [PskKeyExchangeMode.psk_dhe_ke, PskKeyExchangeMode.psk_ke])
    psk_settings = [(b'test', b'pre-shared key', 'sha256')]
    ext[ExtensionType.pre_shared_key] = psk_ext_gen(psk_settings)
    mods = []
    mods.append(psk_ext_updater(psk_settings))
    if dhe:
        ciphers = [
            CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
            CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
            CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA,
            CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV
        ]
    else:
        ciphers = [
            CipherSuite.TLS_RSA_WITH_AES_128_CBC_SHA,
            CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV
        ]
    node = node.add_child(
        ClientHelloGenerator(ciphers, extensions=ext, modifiers=mods))
    node = node.add_child(ExpectServerHello(description="first handshake"))
    node = node.add_child(ExpectCertificate())
    if ocsp:
        node = node.add_child(ExpectCertificateStatus())
    if dhe:
        node = node.add_child(ExpectServerKeyExchange())
    node = node.add_child(ExpectServerHelloDone())
    node = node.add_child(ClientKeyExchangeGenerator())
    node = node.add_child(ChangeCipherSpecGenerator())
    node = node.add_child(FinishedGenerator())
    node = node.add_child(ExpectChangeCipherSpec())
    node = node.add_child(ExpectFinished())
    node = node.add_child(ResetHandshakeHashes())
    renego_exts = OrderedDict(ext)
    # use None for autogeneration of the renegotiation_info with correct
    # payload
    renego_exts[ExtensionType.renegotiation_info] = None
    if ExtensionType.pre_shared_key in renego_exts:
        # make sure the PSK is the last extension
        tmp = renego_exts[ExtensionType.pre_shared_key]
        del renego_exts[ExtensionType.pre_shared_key]
        renego_exts[ExtensionType.pre_shared_key] = tmp
    renego_ciphers = list(ciphers)
    renego_ciphers.remove(CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV)
    node = node.add_child(
        ClientHelloGenerator(renego_ciphers,
                             extensions=renego_exts,
                             session_id=bytearray(0),
                             modifiers=mods))
    node = node.add_child(ExpectServerHello(description="second handshake"))
    node = node.add_child(ExpectCertificate())
    if dhe:
        node = node.add_child(ExpectServerKeyExchange())
    node = node.add_child(ExpectServerHelloDone())
    node = node.add_child(ClientKeyExchangeGenerator())
    node = node.add_child(ChangeCipherSpecGenerator())
    node = node.add_child(FinishedGenerator())
    node = node.add_child(ExpectChangeCipherSpec())
    node = node.add_child(ExpectFinished())

    node = node.add_child(
        ApplicationDataGenerator(bytearray(b"GET / HTTP/1.0\r\n\r\n")))
    node = node.add_child(ExpectApplicationData())
    node = node.add_child(
        AlertGenerator(AlertLevel.warning, AlertDescription.close_notify))
    node = node.add_child(ExpectAlert())
    node.next_sibling = ExpectClose()
    conversations["sanity - renegotiation"] = conversation

    # drop specific extensions in the renegotiated client hello
    # signature_algorithms and signature_algorithms_cert are covered
    # by the test-sig-algs-renegotiation-resumption.py
    for drop_ext, exp_result in [
        (ExtensionType.supported_groups, None),
        (ExtensionType.extended_master_secret,
         AlertDescription.handshake_failure),
        (ExtensionType.key_share, None),
        (ExtensionType.alpn, None),
        (ExtensionType.ec_point_formats, None),
        (18, None),  # signed_certificate_timestamp
        (ExtensionType.status_request, None),
        (ExtensionType.post_handshake_auth, None),
        (ExtensionType.supported_versions, None),
        (ExtensionType.psk_key_exchange_modes, None),
        (ExtensionType.pre_shared_key, None)
    ]:
        conversation = Connect(host, port)
        node = conversation
        ext = OrderedDict()
        ext[ExtensionType.signature_algorithms] = \
            SignatureAlgorithmsExtension().create(SIG_ALL)
        ext[ExtensionType.signature_algorithms_cert] = \
            SignatureAlgorithmsCertExtension().create(SIG_ALL)
        groups = [GroupName.secp256r1, GroupName.ffdhe2048]
        ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\
            .create(groups)
        ext[ExtensionType.extended_master_secret] = AutoEmptyExtension()
        ext[ExtensionType.key_share] = key_share_ext_gen([GroupName.secp256r1])
        ext[ExtensionType.alpn] = \
            ALPNExtension().create([bytearray(b'http/1.1')])
        ext[ExtensionType.ec_point_formats] = \
            ECPointFormatsExtension().create([
                ECPointFormat.ansiX962_compressed_prime,
                ECPointFormat.ansiX962_compressed_char2,
                ECPointFormat.uncompressed])
        # 18 - signed_certificate_timestamp
        ext[18] = AutoEmptyExtension()
        ext[ExtensionType.status_request] = \
            StatusRequestExtension().create()
        ext[ExtensionType.post_handshake_auth] = AutoEmptyExtension()
        # yes, don't include TLS 1.3, as we want to be able to renegotiate...
        ext[ExtensionType.supported_versions] = SupportedVersionsExtension()\
            .create([(3, 3), (3, 2)])
        ext[ExtensionType.psk_key_exchange_modes] = \
            PskKeyExchangeModesExtension().create(
                [PskKeyExchangeMode.psk_dhe_ke, PskKeyExchangeMode.psk_ke])
        ext[ExtensionType.pre_shared_key] = psk_ext_gen([(b'test',
                                                          b'pre-shared key')])
        if dhe:
            ciphers = [
                CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
                CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
                CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA,
                CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV
            ]
        else:
            ciphers = [
                CipherSuite.TLS_RSA_WITH_AES_128_CBC_SHA,
                CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV
            ]
        node = node.add_child(ClientHelloGenerator(ciphers, extensions=ext))
        node = node.add_child(ExpectServerHello(description="first handshake"))
        node = node.add_child(ExpectCertificate())
        if ocsp:
            node = node.add_child(ExpectCertificateStatus())
        if dhe:
            node = node.add_child(ExpectServerKeyExchange())
        node = node.add_child(ExpectServerHelloDone())
        node = node.add_child(ClientKeyExchangeGenerator())
        node = node.add_child(ChangeCipherSpecGenerator())
        node = node.add_child(FinishedGenerator())
        node = node.add_child(ExpectChangeCipherSpec())
        node = node.add_child(ExpectFinished())
        node = node.add_child(ResetHandshakeHashes())
        renego_exts = OrderedDict(ext)
        del renego_exts[drop_ext]
        # use None for autogeneration of the renegotiation_info with correct
        # payload
        renego_exts[ExtensionType.renegotiation_info] = None
        if ExtensionType.pre_shared_key in renego_exts:
            # make sure the PSK is the last extension
            tmp = renego_exts[ExtensionType.pre_shared_key]
            del renego_exts[ExtensionType.pre_shared_key]
            renego_exts[ExtensionType.pre_shared_key] = tmp
        renego_ciphers = list(ciphers)
        renego_ciphers.remove(CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV)
        node = node.add_child(
            ClientHelloGenerator(renego_ciphers,
                                 extensions=renego_exts,
                                 session_id=bytearray(0)))
        if exp_result is not None:
            node = node.add_child(ExpectAlert(AlertLevel.fatal, exp_result))
            node.add_child(ExpectClose())
        else:
            node = node.add_child(
                ExpectServerHello(description="second handshake"))
            node = node.add_child(ExpectCertificate())
            if dhe:
                node = node.add_child(ExpectServerKeyExchange())
            node = node.add_child(ExpectServerHelloDone())
            node = node.add_child(ClientKeyExchangeGenerator())
            node = node.add_child(ChangeCipherSpecGenerator())
            node = node.add_child(FinishedGenerator())
            node = node.add_child(ExpectChangeCipherSpec())
            node = node.add_child(ExpectFinished())

            node = node.add_child(
                ApplicationDataGenerator(bytearray(b"GET / HTTP/1.0\r\n\r\n")))
            node = node.add_child(ExpectApplicationData())
            node = node.add_child(
                AlertGenerator(AlertLevel.warning,
                               AlertDescription.close_notify))
            node = node.add_child(ExpectAlert())
            node.next_sibling = ExpectClose()
        conversations["drop {0} in renegotiation".format(
            ExtensionType.toStr(drop_ext))] = conversation

    # run the conversation
    good = 0
    bad = 0
    xfail = 0
    xpass = 0
    failed = []
    xpassed = []
    if not num_limit:
        num_limit = len(conversations)

    # make sure that sanity test is run first and last
    # to verify that server was running and kept running throughout
    sanity_tests = [('sanity', conversations['sanity'])]
    if run_only:
        if num_limit > len(run_only):
            num_limit = len(run_only)
        regular_tests = [(k, v) for k, v in conversations.items()
                         if k in run_only]
    else:
        regular_tests = [(k, v) for k, v in conversations.items()
                         if (k != 'sanity') and k not in run_exclude]
    sampled_tests = sample(regular_tests, min(num_limit, len(regular_tests)))
    ordered_tests = chain(sanity_tests, sampled_tests, sanity_tests)

    for c_name, c_test in ordered_tests:
        print("{0} ...".format(c_name))

        runner = Runner(c_test)

        res = True
        exception = None
        try:
            runner.run()
        except Exception as exp:
            exception = exp
            print("Error while processing")
            print(traceback.format_exc())
            res = False

        if c_name in expected_failures:
            if res:
                xpass += 1
                xpassed.append(c_name)
                print("XPASS-expected failure but test passed\n")
            else:
                if expected_failures[c_name] is not None and  \
                    expected_failures[c_name] not in str(exception):
                    bad += 1
                    failed.append(c_name)
                    print("Expected error message: {0}\n".format(
                        expected_failures[c_name]))
                else:
                    xfail += 1
                    print("OK-expected failure\n")
        else:
            if res:
                good += 1
                print("OK\n")
            else:
                bad += 1
                failed.append(c_name)

    print("Test how server behaves when the renegotiation Client Hello is")
    print("changed compared to the initial ClientHello.\n")
    print("If the renegotiation is supposed to be disabled use the")
    print("test-renegotiation-disabled.py or")
    print("test-renegotiation-disabled-client-cert.py scripts to verify")
    print("that.\n")

    print("Test end")
    print(20 * '=')
    print("version: {0}".format(version))
    print(20 * '=')
    print("TOTAL: {0}".format(len(sampled_tests) + 2 * len(sanity_tests)))
    print("SKIP: {0}".format(
        len(run_exclude.intersection(conversations.keys()))))
    print("PASS: {0}".format(good))
    print("XFAIL: {0}".format(xfail))
    print("FAIL: {0}".format(bad))
    print("XPASS: {0}".format(xpass))
    print(20 * '=')
    sort = sorted(xpassed, key=natural_sort_keys)
    if len(sort):
        print("XPASSED:\n\t{0}".format('\n\t'.join(repr(i) for i in sort)))
    sort = sorted(failed, key=natural_sort_keys)
    if len(sort):
        print("FAILED:\n\t{0}".format('\n\t'.join(repr(i) for i in sort)))

    if bad > 0:
        sys.exit(1)