[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 Apache License 2.0 (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,
    FFDHE2048 => 0x0100,
    FFDHE3072 => 0x0101
};

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);
if (disabled("ec")) {
    $proxy->serverflags("-groups ffdhe3072");
} else {
    $proxy->serverflags("-groups 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);
if (disabled("ec")) {
    $proxy->serverflags("-groups ffdhe3072");
} else {
    $proxy->serverflags("-groups 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);
if (disabled("ec")) {
    $proxy->serverflags("-groups ffdhe2048");
} else {
    $proxy->serverflags("-groups P-256");
}
if (disabled("ec")) {
    $proxy->clientflags("-groups ffdhe3072");
} else {
    $proxy->clientflags("-groups 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");
if (disabled("ec")) {
    $proxy->clientflags("-groups ffdhe3072");
} else {
    $proxy->clientflags("-groups P-256");
}
$proxy->start();
ok(TLSProxy::Message->success(), "Non preferred key_share");
$proxy->filter(\&modify_key_shares_filter);

SKIP: {
    skip "No ec support in this OpenSSL build", 1 if disabled("ec");

    #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;
$selectedgroupid = 0;
if (disabled("ec")) {
    $proxy->clientflags("-groups ffdhe3072:ffdhe2048");
} else {
    $proxy->clientflags("-groups P-256:X25519");
}
$proxy->start();
if (disabled("ec")) {
    ok(TLSProxy::Message->success() && ($selectedgroupid == FFDHE3072),
       "Multiple acceptable key_shares");
} else {
    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();
if (disabled("ec")) {
    $proxy->clientflags("-curves ffdhe2048:ffdhe3072");
} else {
    $proxy->clientflags("-curves X25519:P-256");
}
$proxy->start();
if (disabled("ec")) {
    ok(TLSProxy::Message->success() && ($selectedgroupid == FFDHE2048),
       "Multiple acceptable key_shares (part 2)");
} else {
    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;
if (disabled("ec")) {
    $proxy->clientflags("-groups ffdhe3072");
} else {
    $proxy->clientflags("-groups 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;
if (disabled("ec")) {
    $proxy->serverflags("-groups ffdhe2048");
} else {
    $proxy->serverflags("-groups 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	3	#
909f1a2e	4	# Licensed under the Apache License 2.0 (the "License"). You may not use
5a8e54d9 MC	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,
dbc6268f MC	39	P_256 => 0x17,
	40	FFDHE2048 => 0x0100,
	41	FFDHE3072 => 0x0101
5a8e54d9 MC	42	};
	43
	44	my $testtype;
	45	my $direction;
	46	my $selectedgroupid;
	47
	48	my $test_name = "test_key_share";
	49	setup($test_name);
	50
	51	plan skip_all => "TLSProxy isn't usable on $^O"
c5856878	52	if $^O =~ /^(VMS)$/;
5a8e54d9 MC	53
	54	plan skip_all => "$test_name needs the dynamic engine feature enabled"
	55	if disabled("engine") \|\| disabled("dynamic-engine");
	56
	57	plan skip_all => "$test_name needs the sock feature enabled"
	58	if disabled("sock");
	59
	60	plan skip_all => "$test_name needs TLS1.3 enabled"
	61	if disabled("tls1_3");
	62
	63	$ENV{OPENSSL_ia32cap} = '~0x200000200000000';
	64
	65	my $proxy = TLSProxy::Proxy->new(
	66	undef,
	67	cmdstr(app(["openssl"]), display => 1),
	68	srctop_file("apps", "server.pem"),
	69	(!$ENV{HARNESS_ACTIVE} \|\| $ENV{HARNESS_VERBOSE})
	70	);
	71
	72	#We assume that test_ssl_new and friends will test the happy path for this,
	73	#so we concentrate on the less common scenarios
	74
38f5c30b	75	#Test 1: An empty key_shares extension should succeed after a HelloRetryRequest
5a8e54d9 MC	76	$testtype = EMPTY_EXTENSION;
	77	$direction = CLIENT_TO_SERVER;
	78	$proxy->filter(\&modify_key_shares_filter);
dbc6268f MC	79	if (disabled("ec")) {
	80	$proxy->serverflags("-groups ffdhe3072");
	81	} else {
	82	$proxy->serverflags("-groups P-256");
	83	}
5a8e54d9	84	$proxy->start() or plan skip_all => "Unable to start up Proxy for tests";
5e3766e2	85	plan tests => 22;
38f5c30b	86	ok(TLSProxy::Message->success(), "Success after HRR");
5a8e54d9	87
38f5c30b MC	88	#Test 2: The server sending an HRR requesting a group the client already sent
	89	# should fail
	90	$proxy->clear();
	91	$proxy->start();
	92	ok(TLSProxy::Message->fail(), "Server asks for group already provided");
	93
	94	#Test 3: A missing key_shares extension should not succeed
5a8e54d9 MC	95	$proxy->clear();
	96	$testtype = MISSING_EXTENSION;
	97	$proxy->start();
5a8e54d9 MC	98	ok(TLSProxy::Message->fail(), "Missing key_shares extension");
5a8e54d9 MC	99
38f5c30b MC	100	#Test 4: No initial acceptable key_shares should succeed after a
38f5c30b MC	101	# HelloRetryRequest
5a8e54d9	102	$proxy->clear();
38f5c30b	103	$proxy->filter(undef);
dbc6268f MC	104	if (disabled("ec")) {
	105	$proxy->serverflags("-groups ffdhe3072");
	106	} else {
	107	$proxy->serverflags("-groups P-256");
	108	}
5a8e54d9	109	$proxy->start();
38f5c30b	110	ok(TLSProxy::Message->success(), "No initial acceptable key_shares");
5a8e54d9	111
38f5c30b	112	#Test 5: No acceptable key_shares and no shared groups should fail
5a8e54d9 MC	113	$proxy->clear();
5a8e54d9 MC	114	$proxy->filter(undef);
dbc6268f MC	115	if (disabled("ec")) {
	116	$proxy->serverflags("-groups ffdhe2048");
	117	} else {
	118	$proxy->serverflags("-groups P-256");
	119	}
	120	if (disabled("ec")) {
	121	$proxy->clientflags("-groups ffdhe3072");
	122	} else {
	123	$proxy->clientflags("-groups P-384");
	124	}
38f5c30b MC	125	$proxy->start();
	126	ok(TLSProxy::Message->fail(), "No acceptable key_shares");
	127
	128	#Test 6: A non preferred but acceptable key_share should succeed
	129	$proxy->clear();
5a8e54d9	130	$proxy->clientflags("-curves P-256");
dbc6268f MC	131	if (disabled("ec")) {
	132	$proxy->clientflags("-groups ffdhe3072");
	133	} else {
	134	$proxy->clientflags("-groups P-256");
	135	}
5a8e54d9 MC	136	$proxy->start();
	137	ok(TLSProxy::Message->success(), "Non preferred key_share");
	138	$proxy->filter(\&modify_key_shares_filter);
	139
dbc6268f MC	140	SKIP: {
	141	skip "No ec support in this OpenSSL build", 1 if disabled("ec");
	142
	143	#Test 7: An acceptable key_share after a list of non-acceptable ones should
	144	#succeed
	145	$proxy->clear();
	146	$testtype = ACCEPTABLE_AT_END;
	147	$proxy->start();
	148	ok(TLSProxy::Message->success(), "Acceptable key_share at end of list");
	149	}
5a8e54d9	150
38f5c30b	151	#Test 8: An acceptable key_share but for a group not in supported_groups should
5a8e54d9 MC	152	#fail
	153	$proxy->clear();
	154	$testtype = NOT_IN_SUPPORTED_GROUPS;
	155	$proxy->start();
	156	ok(TLSProxy::Message->fail(), "Acceptable key_share not in supported_groups");
	157
38f5c30b	158	#Test 9: Too short group_id should fail
5a8e54d9 MC	159	$proxy->clear();
	160	$testtype = GROUP_ID_TOO_SHORT;
	161	$proxy->start();
	162	ok(TLSProxy::Message->fail(), "Group id too short");
	163
38f5c30b	164	#Test 10: key_exchange length mismatch should fail
5a8e54d9 MC	165	$proxy->clear();
	166	$testtype = KEX_LEN_MISMATCH;
	167	$proxy->start();
	168	ok(TLSProxy::Message->fail(), "key_exchange length mismatch");
	169
38f5c30b	170	#Test 11: Zero length key_exchange should fail
5a8e54d9 MC	171	$proxy->clear();
	172	$testtype = ZERO_LEN_KEX_DATA;
	173	$proxy->start();
	174	ok(TLSProxy::Message->fail(), "zero length key_exchange data");
	175
38f5c30b	176	#Test 12: Trailing data on key_share list should fail
5a8e54d9 MC	177	$proxy->clear();
	178	$testtype = TRAILING_DATA;
	179	$proxy->start();
	180	ok(TLSProxy::Message->fail(), "key_share list trailing data");
	181
38f5c30b	182	#Test 13: Multiple acceptable key_shares - we choose the first one
5a8e54d9 MC	183	$proxy->clear();
	184	$direction = SERVER_TO_CLIENT;
	185	$testtype = LOOK_ONLY;
dbc6268f MC	186	$selectedgroupid = 0;
	187	if (disabled("ec")) {
	188	$proxy->clientflags("-groups ffdhe3072:ffdhe2048");
	189	} else {
	190	$proxy->clientflags("-groups P-256:X25519");
	191	}
5a8e54d9	192	$proxy->start();
dbc6268f MC	193	if (disabled("ec")) {
	194	ok(TLSProxy::Message->success() && ($selectedgroupid == FFDHE3072),
	195	"Multiple acceptable key_shares");
	196	} else {
	197	ok(TLSProxy::Message->success() && ($selectedgroupid == P_256),
	198	"Multiple acceptable key_shares");
	199	}
5a8e54d9	200
38f5c30b	201	#Test 14: Multiple acceptable key_shares - we choose the first one (part 2)
5a8e54d9	202	$proxy->clear();
dbc6268f MC	203	if (disabled("ec")) {
	204	$proxy->clientflags("-curves ffdhe2048:ffdhe3072");
	205	} else {
	206	$proxy->clientflags("-curves X25519:P-256");
	207	}
5a8e54d9	208	$proxy->start();
dbc6268f MC	209	if (disabled("ec")) {
	210	ok(TLSProxy::Message->success() && ($selectedgroupid == FFDHE2048),
	211	"Multiple acceptable key_shares (part 2)");
	212	} else {
	213	ok(TLSProxy::Message->success() && ($selectedgroupid == X25519),
	214	"Multiple acceptable key_shares (part 2)");
	215	}
5a8e54d9	216
46f4e1be	217	#Test 15: Server sends key_share that wasn't offered should fail
5a8e54d9 MC	218	$proxy->clear();
5a8e54d9 MC	219	$testtype = SELECT_X25519;
dbc6268f MC	220	if (disabled("ec")) {
	221	$proxy->clientflags("-groups ffdhe3072");
	222	} else {
	223	$proxy->clientflags("-groups P-256");
	224	}
5a8e54d9 MC	225	$proxy->start();
	226	ok(TLSProxy::Message->fail(), "Non offered key_share");
	227
38f5c30b	228	#Test 16: Too short group_id in ServerHello should fail
5a8e54d9 MC	229	$proxy->clear();
	230	$testtype = GROUP_ID_TOO_SHORT;
	231	$proxy->start();
	232	ok(TLSProxy::Message->fail(), "Group id too short in ServerHello");
	233
38f5c30b	234	#Test 17: key_exchange length mismatch in ServerHello should fail
5a8e54d9 MC	235	$proxy->clear();
	236	$testtype = KEX_LEN_MISMATCH;
	237	$proxy->start();
	238	ok(TLSProxy::Message->fail(), "key_exchange length mismatch in ServerHello");
	239
38f5c30b	240	#Test 18: Zero length key_exchange in ServerHello should fail
5a8e54d9 MC	241	$proxy->clear();
	242	$testtype = ZERO_LEN_KEX_DATA;
	243	$proxy->start();
	244	ok(TLSProxy::Message->fail(), "zero length key_exchange data in ServerHello");
	245
38f5c30b	246	#Test 19: Trailing data on key_share in ServerHello should fail
5a8e54d9 MC	247	$proxy->clear();
	248	$testtype = TRAILING_DATA;
	249	$proxy->start();
	250	ok(TLSProxy::Message->fail(), "key_share trailing data in ServerHello");
	251
c423ecaa MC	252	SKIP: {
	253	skip "No TLSv1.2 support in this OpenSSL build", 2 if disabled("tls1_2");
	254
	255	#Test 20: key_share should not be sent if the client is not capable of
	256	# negotiating TLSv1.3
	257	$proxy->clear();
	258	$proxy->filter(undef);
	259	$proxy->clientflags("-no_tls1_3");
	260	$proxy->start();
	261	my $clienthello = $proxy->message_list->[0];
	262	ok(TLSProxy::Message->success()
	263	&& !defined $clienthello->extension_data->{TLSProxy::Message::EXT_KEY_SHARE},
	264	"No key_share for TLS<=1.2 client");
	265	$proxy->filter(\&modify_key_shares_filter);
	266
	267	#Test 21: A server not capable of negotiating TLSv1.3 should not attempt to
	268	# process a key_share
	269	$proxy->clear();
	270	$direction = CLIENT_TO_SERVER;
	271	$testtype = NO_ACCEPTABLE_KEY_SHARES;
	272	$proxy->serverflags("-no_tls1_3");
	273	$proxy->start();
	274	ok(TLSProxy::Message->success(), "Ignore key_share for TLS<=1.2 server");
	275	}
5a8e54d9	276
5e3766e2 MC	277	#Test 22: The server sending an HRR but not requesting a new key_share should
	278	# fail
	279	$proxy->clear();
597c51bc	280	$direction = SERVER_TO_CLIENT;
5e3766e2	281	$testtype = NO_KEY_SHARES_IN_HRR;
dbc6268f MC	282	if (disabled("ec")) {
	283	$proxy->serverflags("-groups ffdhe2048");
	284	} else {
	285	$proxy->serverflags("-groups X25519");
	286	}
5e3766e2 MC	287	$proxy->start();
	288	ok(TLSProxy::Message->fail(), "Server sends HRR with no key_shares");
	289
5a8e54d9 MC	290	sub modify_key_shares_filter
	291	{
	292	my $proxy = shift;
	293
	294	# We're only interested in the initial ClientHello
5e3766e2 MC	295	if (($direction == CLIENT_TO_SERVER && $proxy->flight != 0
5e3766e2 MC	296	&& ($proxy->flight != 1 \|\| $testtype != NO_KEY_SHARES_IN_HRR))
5a8e54d9 MC	297	\|\| ($direction == SERVER_TO_CLIENT && $proxy->flight != 1)) {
	298	return;
	299	}
	300
	301	foreach my $message (@{$proxy->message_list}) {
	302	if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO
	303	&& $direction == CLIENT_TO_SERVER) {
	304	my $ext;
	305	my $suppgroups;
	306
	307	#Setup supported groups to include some unrecognised groups
	308	$suppgroups = pack "C8",
	309	0x00, 0x06, #List Length
	310	0xff, 0xfe, #Non existing group 1
	311	0xff, 0xff, #Non existing group 2
	312	0x00, 0x1d; #x25519
	313
	314	if ($testtype == EMPTY_EXTENSION) {
	315	$ext = pack "C2",
	316	0x00, 0x00;
	317	} elsif ($testtype == NO_ACCEPTABLE_KEY_SHARES) {
	318	$ext = pack "C12",
	319	0x00, 0x0a, #List Length
	320	0xff, 0xfe, #Non existing group 1
	321	0x00, 0x01, 0xff, #key_exchange data
	322	0xff, 0xff, #Non existing group 2
	323	0x00, 0x01, 0xff; #key_exchange data
	324	} elsif ($testtype == ACCEPTABLE_AT_END) {
	325	$ext = pack "C11H64",
	326	0x00, 0x29, #List Length
	327	0xff, 0xfe, #Non existing group 1
	328	0x00, 0x01, 0xff, #key_exchange data
	329	0x00, 0x1d, #x25519
	330	0x00, 0x20, #key_exchange data length
	331	"155155B95269ED5C87EAA99C2EF5A593".
	332	"EDF83495E80380089F831B94D14B1421"; #key_exchange data
	333	} elsif ($testtype == NOT_IN_SUPPORTED_GROUPS) {
	334	$suppgroups = pack "C4",
	335	0x00, 0x02, #List Length
	336	0x00, 0xfe; #Non existing group 1
	337	} elsif ($testtype == GROUP_ID_TOO_SHORT) {
	338	$ext = pack "C6H64C1",
	339	0x00, 0x25, #List Length
	340	0x00, 0x1d, #x25519
	341	0x00, 0x20, #key_exchange data length
	342	"155155B95269ED5C87EAA99C2EF5A593".
	343	"EDF83495E80380089F831B94D14B1421"; #key_exchange data
	344	0x00; #Group id too short
	345	} elsif ($testtype == KEX_LEN_MISMATCH) {
	346	$ext = pack "C8",
	347	0x00, 0x06, #List Length
	348	0x00, 0x1d, #x25519
	349	0x00, 0x20, #key_exchange data length
	350	0x15, 0x51; #Only two bytes of data, but length should be 32
	351	} elsif ($testtype == ZERO_LEN_KEX_DATA) {
	352	$ext = pack "C10H64",
	353	0x00, 0x28, #List Length
	354	0xff, 0xfe, #Non existing group 1
	355	0x00, 0x00, #zero length key_exchange data is invalid
	356	0x00, 0x1d, #x25519
	357	0x00, 0x20, #key_exchange data length
	358	"155155B95269ED5C87EAA99C2EF5A593".
	359	"EDF83495E80380089F831B94D14B1421"; #key_exchange data
	360	} elsif ($testtype == TRAILING_DATA) {
361	$ext = pack "C6H64C1",
362	0x00, 0x24, #List Length
363	0x00, 0x1d, #x25519
364	0x00, 0x20, #key_exchange data length
365	"155155B95269ED5C87EAA99C2EF5A593".
366	"EDF83495E80380089F831B94D14B1421", #key_exchange data
367	0x00; #Trailing garbage
5e3766e2 MC	368	} elsif ($testtype == NO_KEY_SHARES_IN_HRR) {
	369	#We trick the server into thinking we sent a P-256 key_share -
	370	#but the client actually sent X25519
	371	$ext = pack "C7",
	372	0x00, 0x05, #List Length
	373	0x00, 0x17, #P-256
	374	0x00, 0x01, #key_exchange data length
	375	0xff; #Dummy key_share data
5a8e54d9 MC	376	}
5a8e54d9 MC	377
5e3766e2 MC	378	if ($testtype != EMPTY_EXTENSION
5e3766e2 MC	379	&& $testtype != NO_KEY_SHARES_IN_HRR) {
38f5c30b MC	380	$message->set_extension(
	381	TLSProxy::Message::EXT_SUPPORTED_GROUPS, $suppgroups);
	382	}
5a8e54d9 MC	383
	384	if ($testtype == MISSING_EXTENSION) {
	385	$message->delete_extension(
	386	TLSProxy::Message::EXT_KEY_SHARE);
	387	} elsif ($testtype != NOT_IN_SUPPORTED_GROUPS) {
	388	$message->set_extension(
	389	TLSProxy::Message::EXT_KEY_SHARE, $ext);
	390	}
	391
	392	$message->repack();
	393	} elsif ($message->mt == TLSProxy::Message::MT_SERVER_HELLO
	394	&& $direction == SERVER_TO_CLIENT) {
	395	my $ext;
	396	my $key_share =
ecc2f938	397	$message->extension_data->{TLSProxy::Message::EXT_KEY_SHARE};
5a8e54d9 MC	398	$selectedgroupid = unpack("n", $key_share);
	399
	400	if ($testtype == LOOK_ONLY) {
	401	return;
	402	}
597c51bc MC	403	if ($testtype == NO_KEY_SHARES_IN_HRR) {
	404	$message->delete_extension(TLSProxy::Message::EXT_KEY_SHARE);
	405	$message->set_extension(TLSProxy::Message::EXT_UNKNOWN, "");
	406	$message->repack();
	407	return;
	408	}
5a8e54d9 MC	409	if ($testtype == SELECT_X25519) {
	410	$ext = pack "C4H64",
	411	0x00, 0x1d, #x25519
	412	0x00, 0x20, #key_exchange data length
	413	"155155B95269ED5C87EAA99C2EF5A593".
	414	"EDF83495E80380089F831B94D14B1421"; #key_exchange data
	415	} elsif ($testtype == GROUP_ID_TOO_SHORT) {
	416	$ext = pack "C1",
	417	0x00;
	418	} elsif ($testtype == KEX_LEN_MISMATCH) {
	419	$ext = pack "C6",
	420	0x00, 0x1d, #x25519
	421	0x00, 0x20, #key_exchange data length
	422	0x15, 0x51; #Only two bytes of data, but length should be 32
	423	} elsif ($testtype == ZERO_LEN_KEX_DATA) {
	424	$ext = pack "C4",
	425	0x00, 0x1d, #x25519
	426	0x00, 0x00, #zero length key_exchange data is invalid
	427	} elsif ($testtype == TRAILING_DATA) {
	428	$ext = pack "C4H64C1",
	429	0x00, 0x1d, #x25519
	430	0x00, 0x20, #key_exchange data length
	431	"155155B95269ED5C87EAA99C2EF5A593".
	432	"EDF83495E80380089F831B94D14B1421", #key_exchange data
	433	0x00; #Trailing garbage
	434	}
ecc2f938	435	$message->set_extension(TLSProxy::Message::EXT_KEY_SHARE, $ext);
5a8e54d9 MC	436
5a8e54d9 MC	437	$message->repack();
597c51bc	438	}
5a8e54d9 MC	439	}
	440	}
	441
	442