[thirdparty/openssl.git] / test / recipes / 70-test_key_share.t

#! /usr/bin/env perl
# Copyright 2015-2018 The OpenSSL Project Authors. All Rights Reserved.
#
# Licensed under the OpenSSL license (the "License").  You may not use
# this file except in compliance with the License.  You can obtain a copy
# in the file LICENSE in the source distribution or at
# https://www.openssl.org/source/license.html

use strict;
use OpenSSL::Test qw/:DEFAULT cmdstr srctop_file bldtop_dir/;
use OpenSSL::Test::Utils;
use TLSProxy::Proxy;
use File::Temp qw(tempfile);

use constant {
    LOOK_ONLY => 0,
    EMPTY_EXTENSION => 1,
    MISSING_EXTENSION => 2,
    NO_ACCEPTABLE_KEY_SHARES => 3,
    NON_PREFERRED_KEY_SHARE => 4,
    ACCEPTABLE_AT_END => 5,
    NOT_IN_SUPPORTED_GROUPS => 6,
    GROUP_ID_TOO_SHORT => 7,
    KEX_LEN_MISMATCH => 8,
    ZERO_LEN_KEX_DATA => 9,
    TRAILING_DATA => 10,
    SELECT_X25519 => 11,
    NO_KEY_SHARES_IN_HRR => 12
};

use constant {
    CLIENT_TO_SERVER => 1,
    SERVER_TO_CLIENT => 2
};


use constant {
    X25519 => 0x1d,
    P_256 => 0x17
};

my $testtype;
my $direction;
my $selectedgroupid;

my $test_name = "test_key_share";
setup($test_name);

plan skip_all => "TLSProxy isn't usable on $^O"
    if $^O =~ /^(VMS)$/;

plan skip_all => "$test_name needs the dynamic engine feature enabled"
    if disabled("engine") || disabled("dynamic-engine");

plan skip_all => "$test_name needs the sock feature enabled"
    if disabled("sock");

plan skip_all => "$test_name needs TLS1.3 enabled"
    if disabled("tls1_3");

$ENV{OPENSSL_ia32cap} = '~0x200000200000000';

my $proxy = TLSProxy::Proxy->new(
    undef,
    cmdstr(app(["openssl"]), display => 1),
    srctop_file("apps", "server.pem"),
    (!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE})
);

#We assume that test_ssl_new and friends will test the happy path for this,
#so we concentrate on the less common scenarios

#Test 1: An empty key_shares extension should succeed after a HelloRetryRequest
$testtype = EMPTY_EXTENSION;
$direction = CLIENT_TO_SERVER;
$proxy->filter(\&modify_key_shares_filter);
$proxy->serverflags("-curves P-256");
$proxy->start() or plan skip_all => "Unable to start up Proxy for tests";
plan tests => 22;
ok(TLSProxy::Message->success(), "Success after HRR");

#Test 2: The server sending an HRR requesting a group the client already sent
#        should fail
$proxy->clear();
$proxy->start();
ok(TLSProxy::Message->fail(), "Server asks for group already provided");

#Test 3: A missing key_shares extension should not succeed
$proxy->clear();
$testtype = MISSING_EXTENSION;
$proxy->start();
ok(TLSProxy::Message->fail(), "Missing key_shares extension");

#Test 4: No initial acceptable key_shares should succeed after a
#        HelloRetryRequest
$proxy->clear();
$proxy->filter(undef);
$proxy->serverflags("-curves P-256");
$proxy->start();
ok(TLSProxy::Message->success(), "No initial acceptable key_shares");

#Test 5: No acceptable key_shares and no shared groups should fail
$proxy->clear();
$proxy->filter(undef);
$proxy->serverflags("-curves P-256");
$proxy->clientflags("-curves P-384");
$proxy->start();
ok(TLSProxy::Message->fail(), "No acceptable key_shares");

#Test 6: A non preferred but acceptable key_share should succeed
$proxy->clear();
$proxy->clientflags("-curves P-256");
$proxy->start();
ok(TLSProxy::Message->success(), "Non preferred key_share");
$proxy->filter(\&modify_key_shares_filter);

#Test 7: An acceptable key_share after a list of non-acceptable ones should
#succeed
$proxy->clear();
$testtype = ACCEPTABLE_AT_END;
$proxy->start();
ok(TLSProxy::Message->success(), "Acceptable key_share at end of list");

#Test 8: An acceptable key_share but for a group not in supported_groups should
#fail
$proxy->clear();
$testtype = NOT_IN_SUPPORTED_GROUPS;
$proxy->start();
ok(TLSProxy::Message->fail(), "Acceptable key_share not in supported_groups");

#Test 9: Too short group_id should fail
$proxy->clear();
$testtype = GROUP_ID_TOO_SHORT;
$proxy->start();
ok(TLSProxy::Message->fail(), "Group id too short");

#Test 10: key_exchange length mismatch should fail
$proxy->clear();
$testtype = KEX_LEN_MISMATCH;
$proxy->start();
ok(TLSProxy::Message->fail(), "key_exchange length mismatch");

#Test 11: Zero length key_exchange should fail
$proxy->clear();
$testtype = ZERO_LEN_KEX_DATA;
$proxy->start();
ok(TLSProxy::Message->fail(), "zero length key_exchange data");

#Test 12: Trailing data on key_share list should fail
$proxy->clear();
$testtype = TRAILING_DATA;
$proxy->start();
ok(TLSProxy::Message->fail(), "key_share list trailing data");

#Test 13: Multiple acceptable key_shares - we choose the first one
$proxy->clear();
$direction = SERVER_TO_CLIENT;
$testtype = LOOK_ONLY;
$proxy->clientflags("-curves P-256:X25519");
$proxy->start();
ok(TLSProxy::Message->success() && ($selectedgroupid == P_256),
   "Multiple acceptable key_shares");

#Test 14: Multiple acceptable key_shares - we choose the first one (part 2)
$proxy->clear();
$proxy->clientflags("-curves X25519:P-256");
$proxy->start();
ok(TLSProxy::Message->success() && ($selectedgroupid == X25519),
   "Multiple acceptable key_shares (part 2)");

#Test 15: Server sends key_share that wasn't offered should fail
$proxy->clear();
$testtype = SELECT_X25519;
$proxy->clientflags("-curves P-256");
$proxy->start();
ok(TLSProxy::Message->fail(), "Non offered key_share");

#Test 16: Too short group_id in ServerHello should fail
$proxy->clear();
$testtype = GROUP_ID_TOO_SHORT;
$proxy->start();
ok(TLSProxy::Message->fail(), "Group id too short in ServerHello");

#Test 17: key_exchange length mismatch in ServerHello should fail
$proxy->clear();
$testtype = KEX_LEN_MISMATCH;
$proxy->start();
ok(TLSProxy::Message->fail(), "key_exchange length mismatch in ServerHello");

#Test 18: Zero length key_exchange in ServerHello should fail
$proxy->clear();
$testtype = ZERO_LEN_KEX_DATA;
$proxy->start();
ok(TLSProxy::Message->fail(), "zero length key_exchange data in ServerHello");

#Test 19: Trailing data on key_share in ServerHello should fail
$proxy->clear();
$testtype = TRAILING_DATA;
$proxy->start();
ok(TLSProxy::Message->fail(), "key_share trailing data in ServerHello");

SKIP: {
    skip "No TLSv1.2 support in this OpenSSL build", 2 if disabled("tls1_2");

    #Test 20: key_share should not be sent if the client is not capable of
    #         negotiating TLSv1.3
    $proxy->clear();
    $proxy->filter(undef);
    $proxy->clientflags("-no_tls1_3");
    $proxy->start();
    my $clienthello = $proxy->message_list->[0];
    ok(TLSProxy::Message->success()
       && !defined $clienthello->extension_data->{TLSProxy::Message::EXT_KEY_SHARE},
       "No key_share for TLS<=1.2 client");
    $proxy->filter(\&modify_key_shares_filter);

    #Test 21: A server not capable of negotiating TLSv1.3 should not attempt to
    #         process a key_share
    $proxy->clear();
    $direction = CLIENT_TO_SERVER;
    $testtype = NO_ACCEPTABLE_KEY_SHARES;
    $proxy->serverflags("-no_tls1_3");
    $proxy->start();
    ok(TLSProxy::Message->success(), "Ignore key_share for TLS<=1.2 server");
}

#Test 22: The server sending an HRR but not requesting a new key_share should
#         fail
$proxy->clear();
$direction = SERVER_TO_CLIENT;
$testtype = NO_KEY_SHARES_IN_HRR;
$proxy->serverflags("-curves X25519");
$proxy->start();
ok(TLSProxy::Message->fail(), "Server sends HRR with no key_shares");

sub modify_key_shares_filter
{
    my $proxy = shift;

    # We're only interested in the initial ClientHello
    if (($direction == CLIENT_TO_SERVER && $proxy->flight != 0
                && ($proxy->flight != 1 || $testtype != NO_KEY_SHARES_IN_HRR))
            || ($direction == SERVER_TO_CLIENT && $proxy->flight != 1)) {
        return;
    }

    foreach my $message (@{$proxy->message_list}) {
        if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO
                && $direction == CLIENT_TO_SERVER) {
            my $ext;
            my $suppgroups;

            #Setup supported groups to include some unrecognised groups
            $suppgroups = pack "C8",
                0x00, 0x06, #List Length
                0xff, 0xfe, #Non existing group 1
                0xff, 0xff, #Non existing group 2
                0x00, 0x1d; #x25519

            if ($testtype == EMPTY_EXTENSION) {
                $ext = pack "C2",
                    0x00, 0x00;
            } elsif ($testtype == NO_ACCEPTABLE_KEY_SHARES) {
                $ext = pack "C12",
                    0x00, 0x0a, #List Length
                    0xff, 0xfe, #Non existing group 1
                    0x00, 0x01, 0xff, #key_exchange data
                    0xff, 0xff, #Non existing group 2
                    0x00, 0x01, 0xff; #key_exchange data
            } elsif ($testtype == ACCEPTABLE_AT_END) {
                $ext = pack "C11H64",
                    0x00, 0x29, #List Length
                    0xff, 0xfe, #Non existing group 1
                    0x00, 0x01, 0xff, #key_exchange data
                    0x00, 0x1d, #x25519
                    0x00, 0x20, #key_exchange data length
                    "155155B95269ED5C87EAA99C2EF5A593".
                    "EDF83495E80380089F831B94D14B1421";  #key_exchange data
            } elsif ($testtype == NOT_IN_SUPPORTED_GROUPS) {
                $suppgroups = pack "C4",
                    0x00, 0x02, #List Length
                    0x00, 0xfe; #Non existing group 1
            } elsif ($testtype == GROUP_ID_TOO_SHORT) {
                $ext = pack "C6H64C1",
                    0x00, 0x25, #List Length
                    0x00, 0x1d, #x25519
                    0x00, 0x20, #key_exchange data length
                    "155155B95269ED5C87EAA99C2EF5A593".
                    "EDF83495E80380089F831B94D14B1421";  #key_exchange data
                    0x00;       #Group id too short
            } elsif ($testtype == KEX_LEN_MISMATCH) {
                $ext = pack "C8",
                    0x00, 0x06, #List Length
                    0x00, 0x1d, #x25519
                    0x00, 0x20, #key_exchange data length
                    0x15, 0x51; #Only two bytes of data, but length should be 32
            } elsif ($testtype == ZERO_LEN_KEX_DATA) {
                $ext = pack "C10H64",
                    0x00, 0x28, #List Length
                    0xff, 0xfe, #Non existing group 1
                    0x00, 0x00, #zero length key_exchange data is invalid
                    0x00, 0x1d, #x25519
                    0x00, 0x20, #key_exchange data length
                    "155155B95269ED5C87EAA99C2EF5A593".
                    "EDF83495E80380089F831B94D14B1421";  #key_exchange data
            } elsif ($testtype == TRAILING_DATA) {
                $ext = pack "C6H64C1",
                    0x00, 0x24, #List Length
                    0x00, 0x1d, #x25519
                    0x00, 0x20, #key_exchange data length
                    "155155B95269ED5C87EAA99C2EF5A593".
                    "EDF83495E80380089F831B94D14B1421", #key_exchange data
                    0x00; #Trailing garbage
            } elsif ($testtype == NO_KEY_SHARES_IN_HRR) {
                #We trick the server into thinking we sent a P-256 key_share -
                #but the client actually sent X25519
                $ext = pack "C7",
                    0x00, 0x05, #List Length
                    0x00, 0x17, #P-256
                    0x00, 0x01, #key_exchange data length
                    0xff;       #Dummy key_share data
            }

            if ($testtype != EMPTY_EXTENSION
                    && $testtype != NO_KEY_SHARES_IN_HRR) {
                $message->set_extension(
                    TLSProxy::Message::EXT_SUPPORTED_GROUPS, $suppgroups);
            }

            if ($testtype == MISSING_EXTENSION) {
                $message->delete_extension(
                    TLSProxy::Message::EXT_KEY_SHARE);
            } elsif ($testtype != NOT_IN_SUPPORTED_GROUPS) {
                $message->set_extension(
                    TLSProxy::Message::EXT_KEY_SHARE, $ext);
            }

            $message->repack();
        } elsif ($message->mt == TLSProxy::Message::MT_SERVER_HELLO
                     && $direction == SERVER_TO_CLIENT) {
            my $ext;
            my $key_share =
                $message->extension_data->{TLSProxy::Message::EXT_KEY_SHARE};
            $selectedgroupid = unpack("n", $key_share);

            if ($testtype == LOOK_ONLY) {
                return;
            }
            if ($testtype == NO_KEY_SHARES_IN_HRR) {
                $message->delete_extension(TLSProxy::Message::EXT_KEY_SHARE);
                $message->set_extension(TLSProxy::Message::EXT_UNKNOWN, "");
                $message->repack();
                return;
            }
            if ($testtype == SELECT_X25519) {
                $ext = pack "C4H64",
                    0x00, 0x1d, #x25519
                    0x00, 0x20, #key_exchange data length
                    "155155B95269ED5C87EAA99C2EF5A593".
                    "EDF83495E80380089F831B94D14B1421";  #key_exchange data
            } elsif ($testtype == GROUP_ID_TOO_SHORT) {
                $ext = pack "C1",
                    0x00;
            } elsif ($testtype == KEX_LEN_MISMATCH) {
                $ext = pack "C6",
                    0x00, 0x1d, #x25519
                    0x00, 0x20, #key_exchange data length
                    0x15, 0x51; #Only two bytes of data, but length should be 32
            } elsif ($testtype == ZERO_LEN_KEX_DATA) {
                $ext = pack "C4",
                    0x00, 0x1d, #x25519
                    0x00, 0x00, #zero length key_exchange data is invalid
            } elsif ($testtype == TRAILING_DATA) {
                $ext = pack "C4H64C1",
                    0x00, 0x1d, #x25519
                    0x00, 0x20, #key_exchange data length
                    "155155B95269ED5C87EAA99C2EF5A593".
                    "EDF83495E80380089F831B94D14B1421", #key_exchange data
                    0x00; #Trailing garbage
            }
            $message->set_extension(TLSProxy::Message::EXT_KEY_SHARE, $ext);

            $message->repack();
        }
    }
}
Commit	Line	Data
5a8e54d9	1	#! /usr/bin/env perl
6738bf14	2	# Copyright 2015-2018 The OpenSSL Project Authors. All Rights Reserved.
5a8e54d9 MC	3	#
	4	# Licensed under the OpenSSL license (the "License"). You may not use
	5	# this file except in compliance with the License. You can obtain a copy
	6	# in the file LICENSE in the source distribution or at
	7	# https://www.openssl.org/source/license.html
	8
	9	use strict;
	10	use OpenSSL::Test qw/:DEFAULT cmdstr srctop_file bldtop_dir/;
	11	use OpenSSL::Test::Utils;
	12	use TLSProxy::Proxy;
	13	use File::Temp qw(tempfile);
	14
	15	use constant {
	16	LOOK_ONLY => 0,
	17	EMPTY_EXTENSION => 1,
	18	MISSING_EXTENSION => 2,
	19	NO_ACCEPTABLE_KEY_SHARES => 3,
	20	NON_PREFERRED_KEY_SHARE => 4,
	21	ACCEPTABLE_AT_END => 5,
	22	NOT_IN_SUPPORTED_GROUPS => 6,
	23	GROUP_ID_TOO_SHORT => 7,
	24	KEX_LEN_MISMATCH => 8,
	25	ZERO_LEN_KEX_DATA => 9,
	26	TRAILING_DATA => 10,
5e3766e2 MC	27	SELECT_X25519 => 11,
5e3766e2 MC	28	NO_KEY_SHARES_IN_HRR => 12
5a8e54d9 MC	29	};
	30
	31	use constant {
	32	CLIENT_TO_SERVER => 1,
	33	SERVER_TO_CLIENT => 2
	34	};
	35
	36
	37	use constant {
	38	X25519 => 0x1d,
	39	P_256 => 0x17
	40	};
	41
	42	my $testtype;
	43	my $direction;
	44	my $selectedgroupid;
	45
	46	my $test_name = "test_key_share";
	47	setup($test_name);
	48
	49	plan skip_all => "TLSProxy isn't usable on $^O"
c5856878	50	if $^O =~ /^(VMS)$/;
5a8e54d9 MC	51
	52	plan skip_all => "$test_name needs the dynamic engine feature enabled"
	53	if disabled("engine") \|\| disabled("dynamic-engine");
	54
	55	plan skip_all => "$test_name needs the sock feature enabled"
	56	if disabled("sock");
	57
	58	plan skip_all => "$test_name needs TLS1.3 enabled"
	59	if disabled("tls1_3");
	60
	61	$ENV{OPENSSL_ia32cap} = '~0x200000200000000';
	62
	63	my $proxy = TLSProxy::Proxy->new(
	64	undef,
	65	cmdstr(app(["openssl"]), display => 1),
	66	srctop_file("apps", "server.pem"),
	67	(!$ENV{HARNESS_ACTIVE} \|\| $ENV{HARNESS_VERBOSE})
	68	);
	69
	70	#We assume that test_ssl_new and friends will test the happy path for this,
	71	#so we concentrate on the less common scenarios
	72
38f5c30b	73	#Test 1: An empty key_shares extension should succeed after a HelloRetryRequest
5a8e54d9 MC	74	$testtype = EMPTY_EXTENSION;
	75	$direction = CLIENT_TO_SERVER;
	76	$proxy->filter(\&modify_key_shares_filter);
38f5c30b	77	$proxy->serverflags("-curves P-256");
5a8e54d9	78	$proxy->start() or plan skip_all => "Unable to start up Proxy for tests";
5e3766e2	79	plan tests => 22;
38f5c30b	80	ok(TLSProxy::Message->success(), "Success after HRR");
5a8e54d9	81
38f5c30b MC	82	#Test 2: The server sending an HRR requesting a group the client already sent
	83	# should fail
	84	$proxy->clear();
	85	$proxy->start();
	86	ok(TLSProxy::Message->fail(), "Server asks for group already provided");
	87
	88	#Test 3: A missing key_shares extension should not succeed
5a8e54d9 MC	89	$proxy->clear();
	90	$testtype = MISSING_EXTENSION;
	91	$proxy->start();
5a8e54d9 MC	92	ok(TLSProxy::Message->fail(), "Missing key_shares extension");
5a8e54d9 MC	93
38f5c30b MC	94	#Test 4: No initial acceptable key_shares should succeed after a
38f5c30b MC	95	# HelloRetryRequest
5a8e54d9	96	$proxy->clear();
38f5c30b MC	97	$proxy->filter(undef);
38f5c30b MC	98	$proxy->serverflags("-curves P-256");
5a8e54d9	99	$proxy->start();
38f5c30b	100	ok(TLSProxy::Message->success(), "No initial acceptable key_shares");
5a8e54d9	101
38f5c30b	102	#Test 5: No acceptable key_shares and no shared groups should fail
5a8e54d9 MC	103	$proxy->clear();
5a8e54d9 MC	104	$proxy->filter(undef);
38f5c30b MC	105	$proxy->serverflags("-curves P-256");
	106	$proxy->clientflags("-curves P-384");
	107	$proxy->start();
	108	ok(TLSProxy::Message->fail(), "No acceptable key_shares");
	109
	110	#Test 6: A non preferred but acceptable key_share should succeed
	111	$proxy->clear();
5a8e54d9 MC	112	$proxy->clientflags("-curves P-256");
	113	$proxy->start();
	114	ok(TLSProxy::Message->success(), "Non preferred key_share");
	115	$proxy->filter(\&modify_key_shares_filter);
	116
38f5c30b	117	#Test 7: An acceptable key_share after a list of non-acceptable ones should
5a8e54d9 MC	118	#succeed
	119	$proxy->clear();
	120	$testtype = ACCEPTABLE_AT_END;
	121	$proxy->start();
	122	ok(TLSProxy::Message->success(), "Acceptable key_share at end of list");
	123
38f5c30b	124	#Test 8: An acceptable key_share but for a group not in supported_groups should
5a8e54d9 MC	125	#fail
	126	$proxy->clear();
	127	$testtype = NOT_IN_SUPPORTED_GROUPS;
	128	$proxy->start();
	129	ok(TLSProxy::Message->fail(), "Acceptable key_share not in supported_groups");
	130
38f5c30b	131	#Test 9: Too short group_id should fail
5a8e54d9 MC	132	$proxy->clear();
	133	$testtype = GROUP_ID_TOO_SHORT;
	134	$proxy->start();
	135	ok(TLSProxy::Message->fail(), "Group id too short");
	136
38f5c30b	137	#Test 10: key_exchange length mismatch should fail
5a8e54d9 MC	138	$proxy->clear();
	139	$testtype = KEX_LEN_MISMATCH;
	140	$proxy->start();
	141	ok(TLSProxy::Message->fail(), "key_exchange length mismatch");
	142
38f5c30b	143	#Test 11: Zero length key_exchange should fail
5a8e54d9 MC	144	$proxy->clear();
	145	$testtype = ZERO_LEN_KEX_DATA;
	146	$proxy->start();
	147	ok(TLSProxy::Message->fail(), "zero length key_exchange data");
	148
38f5c30b	149	#Test 12: Trailing data on key_share list should fail
5a8e54d9 MC	150	$proxy->clear();
	151	$testtype = TRAILING_DATA;
	152	$proxy->start();
	153	ok(TLSProxy::Message->fail(), "key_share list trailing data");
	154
38f5c30b	155	#Test 13: Multiple acceptable key_shares - we choose the first one
5a8e54d9 MC	156	$proxy->clear();
	157	$direction = SERVER_TO_CLIENT;
	158	$testtype = LOOK_ONLY;
	159	$proxy->clientflags("-curves P-256:X25519");
	160	$proxy->start();
	161	ok(TLSProxy::Message->success() && ($selectedgroupid == P_256),
	162	"Multiple acceptable key_shares");
	163
38f5c30b	164	#Test 14: Multiple acceptable key_shares - we choose the first one (part 2)
5a8e54d9 MC	165	$proxy->clear();
	166	$proxy->clientflags("-curves X25519:P-256");
	167	$proxy->start();
	168	ok(TLSProxy::Message->success() && ($selectedgroupid == X25519),
	169	"Multiple acceptable key_shares (part 2)");
	170
46f4e1be	171	#Test 15: Server sends key_share that wasn't offered should fail
5a8e54d9 MC	172	$proxy->clear();
	173	$testtype = SELECT_X25519;
	174	$proxy->clientflags("-curves P-256");
	175	$proxy->start();
	176	ok(TLSProxy::Message->fail(), "Non offered key_share");
	177
38f5c30b	178	#Test 16: Too short group_id in ServerHello should fail
5a8e54d9 MC	179	$proxy->clear();
	180	$testtype = GROUP_ID_TOO_SHORT;
	181	$proxy->start();
	182	ok(TLSProxy::Message->fail(), "Group id too short in ServerHello");
	183
38f5c30b	184	#Test 17: key_exchange length mismatch in ServerHello should fail
5a8e54d9 MC	185	$proxy->clear();
	186	$testtype = KEX_LEN_MISMATCH;
	187	$proxy->start();
	188	ok(TLSProxy::Message->fail(), "key_exchange length mismatch in ServerHello");
	189
38f5c30b	190	#Test 18: Zero length key_exchange in ServerHello should fail
5a8e54d9 MC	191	$proxy->clear();
	192	$testtype = ZERO_LEN_KEX_DATA;
	193	$proxy->start();
	194	ok(TLSProxy::Message->fail(), "zero length key_exchange data in ServerHello");
	195
38f5c30b	196	#Test 19: Trailing data on key_share in ServerHello should fail
5a8e54d9 MC	197	$proxy->clear();
	198	$testtype = TRAILING_DATA;
	199	$proxy->start();
	200	ok(TLSProxy::Message->fail(), "key_share trailing data in ServerHello");
	201
c423ecaa MC	202	SKIP: {
	203	skip "No TLSv1.2 support in this OpenSSL build", 2 if disabled("tls1_2");
	204
	205	#Test 20: key_share should not be sent if the client is not capable of
	206	# negotiating TLSv1.3
	207	$proxy->clear();
	208	$proxy->filter(undef);
	209	$proxy->clientflags("-no_tls1_3");
	210	$proxy->start();
	211	my $clienthello = $proxy->message_list->[0];
	212	ok(TLSProxy::Message->success()
	213	&& !defined $clienthello->extension_data->{TLSProxy::Message::EXT_KEY_SHARE},
	214	"No key_share for TLS<=1.2 client");
	215	$proxy->filter(\&modify_key_shares_filter);
	216
	217	#Test 21: A server not capable of negotiating TLSv1.3 should not attempt to
	218	# process a key_share
	219	$proxy->clear();
	220	$direction = CLIENT_TO_SERVER;
	221	$testtype = NO_ACCEPTABLE_KEY_SHARES;
	222	$proxy->serverflags("-no_tls1_3");
	223	$proxy->start();
	224	ok(TLSProxy::Message->success(), "Ignore key_share for TLS<=1.2 server");
	225	}
5a8e54d9	226
5e3766e2 MC	227	#Test 22: The server sending an HRR but not requesting a new key_share should
	228	# fail
	229	$proxy->clear();
597c51bc	230	$direction = SERVER_TO_CLIENT;
5e3766e2 MC	231	$testtype = NO_KEY_SHARES_IN_HRR;
	232	$proxy->serverflags("-curves X25519");
	233	$proxy->start();
	234	ok(TLSProxy::Message->fail(), "Server sends HRR with no key_shares");
	235
5a8e54d9 MC	236	sub modify_key_shares_filter
	237	{
	238	my $proxy = shift;
	239
	240	# We're only interested in the initial ClientHello
5e3766e2 MC	241	if (($direction == CLIENT_TO_SERVER && $proxy->flight != 0
5e3766e2 MC	242	&& ($proxy->flight != 1 \|\| $testtype != NO_KEY_SHARES_IN_HRR))
5a8e54d9 MC	243	\|\| ($direction == SERVER_TO_CLIENT && $proxy->flight != 1)) {
	244	return;
	245	}
	246
	247	foreach my $message (@{$proxy->message_list}) {
	248	if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO
	249	&& $direction == CLIENT_TO_SERVER) {
	250	my $ext;
	251	my $suppgroups;
	252
	253	#Setup supported groups to include some unrecognised groups
	254	$suppgroups = pack "C8",
	255	0x00, 0x06, #List Length
	256	0xff, 0xfe, #Non existing group 1
	257	0xff, 0xff, #Non existing group 2
	258	0x00, 0x1d; #x25519
	259
	260	if ($testtype == EMPTY_EXTENSION) {
	261	$ext = pack "C2",
	262	0x00, 0x00;
	263	} elsif ($testtype == NO_ACCEPTABLE_KEY_SHARES) {
	264	$ext = pack "C12",
	265	0x00, 0x0a, #List Length
	266	0xff, 0xfe, #Non existing group 1
	267	0x00, 0x01, 0xff, #key_exchange data
	268	0xff, 0xff, #Non existing group 2
	269	0x00, 0x01, 0xff; #key_exchange data
	270	} elsif ($testtype == ACCEPTABLE_AT_END) {
	271	$ext = pack "C11H64",
	272	0x00, 0x29, #List Length
	273	0xff, 0xfe, #Non existing group 1
	274	0x00, 0x01, 0xff, #key_exchange data
	275	0x00, 0x1d, #x25519
	276	0x00, 0x20, #key_exchange data length
	277	"155155B95269ED5C87EAA99C2EF5A593".
	278	"EDF83495E80380089F831B94D14B1421"; #key_exchange data
	279	} elsif ($testtype == NOT_IN_SUPPORTED_GROUPS) {
	280	$suppgroups = pack "C4",
	281	0x00, 0x02, #List Length
	282	0x00, 0xfe; #Non existing group 1
	283	} elsif ($testtype == GROUP_ID_TOO_SHORT) {
	284	$ext = pack "C6H64C1",
	285	0x00, 0x25, #List Length
	286	0x00, 0x1d, #x25519
	287	0x00, 0x20, #key_exchange data length
	288	"155155B95269ED5C87EAA99C2EF5A593".
	289	"EDF83495E80380089F831B94D14B1421"; #key_exchange data
	290	0x00; #Group id too short
	291	} elsif ($testtype == KEX_LEN_MISMATCH) {
	292	$ext = pack "C8",
	293	0x00, 0x06, #List Length
	294	0x00, 0x1d, #x25519
	295	0x00, 0x20, #key_exchange data length
	296	0x15, 0x51; #Only two bytes of data, but length should be 32
	297	} elsif ($testtype == ZERO_LEN_KEX_DATA) {
	298	$ext = pack "C10H64",
	299	0x00, 0x28, #List Length
	300	0xff, 0xfe, #Non existing group 1
	301	0x00, 0x00, #zero length key_exchange data is invalid
	302	0x00, 0x1d, #x25519
	303	0x00, 0x20, #key_exchange data length
	304	"155155B95269ED5C87EAA99C2EF5A593".
	305	"EDF83495E80380089F831B94D14B1421"; #key_exchange data
	306	} elsif ($testtype == TRAILING_DATA) {
307	$ext = pack "C6H64C1",
308	0x00, 0x24, #List Length
309	0x00, 0x1d, #x25519
310	0x00, 0x20, #key_exchange data length
311	"155155B95269ED5C87EAA99C2EF5A593".
312	"EDF83495E80380089F831B94D14B1421", #key_exchange data
313	0x00; #Trailing garbage
5e3766e2 MC	314	} elsif ($testtype == NO_KEY_SHARES_IN_HRR) {
	315	#We trick the server into thinking we sent a P-256 key_share -
	316	#but the client actually sent X25519
	317	$ext = pack "C7",
	318	0x00, 0x05, #List Length
	319	0x00, 0x17, #P-256
	320	0x00, 0x01, #key_exchange data length
	321	0xff; #Dummy key_share data
5a8e54d9 MC	322	}
5a8e54d9 MC	323
5e3766e2 MC	324	if ($testtype != EMPTY_EXTENSION
5e3766e2 MC	325	&& $testtype != NO_KEY_SHARES_IN_HRR) {
38f5c30b MC	326	$message->set_extension(
	327	TLSProxy::Message::EXT_SUPPORTED_GROUPS, $suppgroups);
	328	}
5a8e54d9 MC	329
	330	if ($testtype == MISSING_EXTENSION) {
	331	$message->delete_extension(
	332	TLSProxy::Message::EXT_KEY_SHARE);
	333	} elsif ($testtype != NOT_IN_SUPPORTED_GROUPS) {
	334	$message->set_extension(
	335	TLSProxy::Message::EXT_KEY_SHARE, $ext);
	336	}
	337
	338	$message->repack();
	339	} elsif ($message->mt == TLSProxy::Message::MT_SERVER_HELLO
	340	&& $direction == SERVER_TO_CLIENT) {
	341	my $ext;
	342	my $key_share =
ecc2f938	343	$message->extension_data->{TLSProxy::Message::EXT_KEY_SHARE};
5a8e54d9 MC	344	$selectedgroupid = unpack("n", $key_share);
	345
	346	if ($testtype == LOOK_ONLY) {
	347	return;
	348	}
597c51bc MC	349	if ($testtype == NO_KEY_SHARES_IN_HRR) {
	350	$message->delete_extension(TLSProxy::Message::EXT_KEY_SHARE);
	351	$message->set_extension(TLSProxy::Message::EXT_UNKNOWN, "");
	352	$message->repack();
	353	return;
	354	}
5a8e54d9 MC	355	if ($testtype == SELECT_X25519) {
	356	$ext = pack "C4H64",
	357	0x00, 0x1d, #x25519
	358	0x00, 0x20, #key_exchange data length
	359	"155155B95269ED5C87EAA99C2EF5A593".
	360	"EDF83495E80380089F831B94D14B1421"; #key_exchange data
	361	} elsif ($testtype == GROUP_ID_TOO_SHORT) {
	362	$ext = pack "C1",
	363	0x00;
	364	} elsif ($testtype == KEX_LEN_MISMATCH) {
	365	$ext = pack "C6",
	366	0x00, 0x1d, #x25519
	367	0x00, 0x20, #key_exchange data length
	368	0x15, 0x51; #Only two bytes of data, but length should be 32
	369	} elsif ($testtype == ZERO_LEN_KEX_DATA) {
	370	$ext = pack "C4",
	371	0x00, 0x1d, #x25519
	372	0x00, 0x00, #zero length key_exchange data is invalid
	373	} elsif ($testtype == TRAILING_DATA) {
	374	$ext = pack "C4H64C1",
	375	0x00, 0x1d, #x25519
	376	0x00, 0x20, #key_exchange data length
	377	"155155B95269ED5C87EAA99C2EF5A593".
	378	"EDF83495E80380089F831B94D14B1421", #key_exchange data
	379	0x00; #Trailing garbage
	380	}
ecc2f938	381	$message->set_extension(TLSProxy::Message::EXT_KEY_SHARE, $ext);
5a8e54d9 MC	382
5a8e54d9 MC	383	$message->repack();
597c51bc	384	}
5a8e54d9 MC	385	}
	386	}
	387
	388