70-test_tls13kexmodes.t
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#! /usr/bin/env perl
# Copyright 2017-2018 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 srctop_dir bldtop_dir/;
use OpenSSL::Test::Utils;
use File::Temp qw(tempfile);
use TLSProxy::Proxy;
use checkhandshake qw(checkhandshake @handmessages @extensions);
my $test_name = "test_tls13kexmodes";
setup($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 TLSv1.3 enabled"
if disabled("tls1_3");
$ENV{OPENSSL_ia32cap} = '~0x200000200000000';
$ENV{CTLOG_FILE} = srctop_file("test", "ct", "log_list.conf");
@handmessages = (
[TLSProxy::Message::MT_CLIENT_HELLO,
checkhandshake::ALL_HANDSHAKES],
[TLSProxy::Message::MT_SERVER_HELLO,
checkhandshake::HRR_HANDSHAKE | checkhandshake::HRR_RESUME_HANDSHAKE],
[TLSProxy::Message::MT_CLIENT_HELLO,
checkhandshake::HRR_HANDSHAKE | checkhandshake::HRR_RESUME_HANDSHAKE],
[TLSProxy::Message::MT_SERVER_HELLO,
checkhandshake::ALL_HANDSHAKES],
[TLSProxy::Message::MT_ENCRYPTED_EXTENSIONS,
checkhandshake::ALL_HANDSHAKES],
[TLSProxy::Message::MT_CERTIFICATE_REQUEST,
checkhandshake::CLIENT_AUTH_HANDSHAKE],
[TLSProxy::Message::MT_CERTIFICATE,
checkhandshake::ALL_HANDSHAKES & ~(checkhandshake::RESUME_HANDSHAKE | checkhandshake::HRR_RESUME_HANDSHAKE)],
[TLSProxy::Message::MT_CERTIFICATE_VERIFY,
checkhandshake::ALL_HANDSHAKES & ~(checkhandshake::RESUME_HANDSHAKE | checkhandshake::HRR_RESUME_HANDSHAKE)],
[TLSProxy::Message::MT_FINISHED,
checkhandshake::ALL_HANDSHAKES],
[TLSProxy::Message::MT_CERTIFICATE,
checkhandshake::CLIENT_AUTH_HANDSHAKE],
[TLSProxy::Message::MT_CERTIFICATE_VERIFY,
checkhandshake::CLIENT_AUTH_HANDSHAKE],
[TLSProxy::Message::MT_FINISHED,
checkhandshake::ALL_HANDSHAKES],
[0, 0]
);
@extensions = (
[TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SERVER_NAME,
checkhandshake::SERVER_NAME_CLI_EXTENSION],
[TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_STATUS_REQUEST,
checkhandshake::STATUS_REQUEST_CLI_EXTENSION],
[TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SUPPORTED_GROUPS,
checkhandshake::DEFAULT_EXTENSIONS],
[TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_EC_POINT_FORMATS,
checkhandshake::DEFAULT_EXTENSIONS],
[TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SIG_ALGS,
checkhandshake::DEFAULT_EXTENSIONS],
[TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_ALPN,
checkhandshake::ALPN_CLI_EXTENSION],
[TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SCT,
checkhandshake::SCT_CLI_EXTENSION],
[TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_ENCRYPT_THEN_MAC,
checkhandshake::DEFAULT_EXTENSIONS],
[TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_EXTENDED_MASTER_SECRET,
checkhandshake::DEFAULT_EXTENSIONS],
[TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SESSION_TICKET,
checkhandshake::DEFAULT_EXTENSIONS],
[TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_KEY_SHARE,
checkhandshake::DEFAULT_EXTENSIONS],
[TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SUPPORTED_VERSIONS,
checkhandshake::DEFAULT_EXTENSIONS],
[TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_PSK_KEX_MODES,
checkhandshake::PSK_KEX_MODES_EXTENSION],
[TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_PSK,
checkhandshake::PSK_CLI_EXTENSION],
[TLSProxy::Message::MT_SERVER_HELLO, TLSProxy::Message::EXT_SUPPORTED_VERSIONS,
checkhandshake::DEFAULT_EXTENSIONS],
[TLSProxy::Message::MT_SERVER_HELLO, TLSProxy::Message::EXT_KEY_SHARE,
checkhandshake::KEY_SHARE_HRR_EXTENSION],
[TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SERVER_NAME,
checkhandshake::SERVER_NAME_CLI_EXTENSION],
[TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_STATUS_REQUEST,
checkhandshake::STATUS_REQUEST_CLI_EXTENSION],
[TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SUPPORTED_GROUPS,
checkhandshake::DEFAULT_EXTENSIONS],
[TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_EC_POINT_FORMATS,
checkhandshake::DEFAULT_EXTENSIONS],
[TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SIG_ALGS,
checkhandshake::DEFAULT_EXTENSIONS],
[TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_ALPN,
checkhandshake::ALPN_CLI_EXTENSION],
[TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SCT,
checkhandshake::SCT_CLI_EXTENSION],
[TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_ENCRYPT_THEN_MAC,
checkhandshake::DEFAULT_EXTENSIONS],
[TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_EXTENDED_MASTER_SECRET,
checkhandshake::DEFAULT_EXTENSIONS],
[TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SESSION_TICKET,
checkhandshake::DEFAULT_EXTENSIONS],
[TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_KEY_SHARE,
checkhandshake::DEFAULT_EXTENSIONS],
[TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SUPPORTED_VERSIONS,
checkhandshake::DEFAULT_EXTENSIONS],
[TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_PSK_KEX_MODES,
checkhandshake::PSK_KEX_MODES_EXTENSION],
[TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_PSK,
checkhandshake::PSK_CLI_EXTENSION],
[TLSProxy::Message::MT_SERVER_HELLO, TLSProxy::Message::EXT_SUPPORTED_VERSIONS,
checkhandshake::DEFAULT_EXTENSIONS],
[TLSProxy::Message::MT_SERVER_HELLO, TLSProxy::Message::EXT_KEY_SHARE,
checkhandshake::KEY_SHARE_SRV_EXTENSION],
[TLSProxy::Message::MT_SERVER_HELLO, TLSProxy::Message::EXT_PSK,
checkhandshake::PSK_SRV_EXTENSION],
[TLSProxy::Message::MT_CERTIFICATE, TLSProxy::Message::EXT_STATUS_REQUEST,
checkhandshake::STATUS_REQUEST_SRV_EXTENSION],
[0,0,0]
);
use constant {
DELETE_EXTENSION => 0,
EMPTY_EXTENSION => 1,
NON_DHE_KEX_MODE_ONLY => 2,
DHE_KEX_MODE_ONLY => 3,
UNKNOWN_KEX_MODES => 4,
BOTH_KEX_MODES => 5
};
my $proxy = TLSProxy::Proxy->new(
undef,
cmdstr(app(["openssl"]), display => 1),
srctop_file("apps", "server.pem"),
(!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE})
);
#Test 1: First get a session
(undef, my $session) = tempfile();
$proxy->clientflags("-sess_out ".$session);
$proxy->serverflags("-servername localhost");
$proxy->sessionfile($session);
$proxy->start() or plan skip_all => "Unable to start up Proxy for tests";
plan tests => 11;
ok(TLSProxy::Message->success(), "Initial connection");
#Test 2: Attempt a resume with no kex modes extension. Should not resume
$proxy->clear();
$proxy->clientflags("-sess_in ".$session);
my $testtype = DELETE_EXTENSION;
$proxy->filter(\&modify_kex_modes_filter);
$proxy->start();
checkhandshake($proxy, checkhandshake::DEFAULT_HANDSHAKE,
checkhandshake::DEFAULT_EXTENSIONS
| checkhandshake::KEY_SHARE_SRV_EXTENSION
| checkhandshake::PSK_CLI_EXTENSION,
"Resume with no kex modes");
#Test 3: Attempt a resume with empty kex modes extension. Should fail (empty
# extension is invalid)
$proxy->clear();
$proxy->clientflags("-sess_in ".$session);
$testtype = EMPTY_EXTENSION;
$proxy->start();
ok(TLSProxy::Message->fail(), "Resume with empty kex modes");
#Test 4: Attempt a resume with non-dhe kex mode only. Should resume without a
# key_share
$proxy->clear();
$proxy->clientflags("-allow_no_dhe_kex -sess_in ".$session);
$proxy->serverflags("-allow_no_dhe_kex");
$testtype = NON_DHE_KEX_MODE_ONLY;
$proxy->start();
checkhandshake($proxy, checkhandshake::RESUME_HANDSHAKE,
checkhandshake::DEFAULT_EXTENSIONS
| checkhandshake::PSK_KEX_MODES_EXTENSION
| checkhandshake::PSK_CLI_EXTENSION
| checkhandshake::PSK_SRV_EXTENSION,
"Resume with non-dhe kex mode");
#Test 5: Attempt a resume with dhe kex mode only. Should resume with a key_share
$proxy->clear();
$proxy->clientflags("-sess_in ".$session);
$testtype = DHE_KEX_MODE_ONLY;
$proxy->start();
checkhandshake($proxy, checkhandshake::RESUME_HANDSHAKE,
checkhandshake::DEFAULT_EXTENSIONS
| checkhandshake::PSK_KEX_MODES_EXTENSION
| checkhandshake::KEY_SHARE_SRV_EXTENSION
| checkhandshake::PSK_CLI_EXTENSION
| checkhandshake::PSK_SRV_EXTENSION,
"Resume with non-dhe kex mode");
#Test 6: Attempt a resume with only unrecognised kex modes. Should not resume
$proxy->clear();
$proxy->clientflags("-sess_in ".$session);
$testtype = UNKNOWN_KEX_MODES;
$proxy->start();
checkhandshake($proxy, checkhandshake::DEFAULT_HANDSHAKE,
checkhandshake::DEFAULT_EXTENSIONS
| checkhandshake::PSK_KEX_MODES_EXTENSION
| checkhandshake::KEY_SHARE_SRV_EXTENSION
| checkhandshake::PSK_CLI_EXTENSION,
"Resume with empty kex modes");
#Test 7: Attempt a resume with both non-dhe and dhe kex mode. Should resume with
# a key_share
$proxy->clear();
$proxy->clientflags("-sess_in ".$session);
$testtype = BOTH_KEX_MODES;
$proxy->start();
checkhandshake($proxy, checkhandshake::RESUME_HANDSHAKE,
checkhandshake::DEFAULT_EXTENSIONS
| checkhandshake::PSK_KEX_MODES_EXTENSION
| checkhandshake::KEY_SHARE_SRV_EXTENSION
| checkhandshake::PSK_CLI_EXTENSION
| checkhandshake::PSK_SRV_EXTENSION,
"Resume with non-dhe kex mode");
#Test 8: Attempt a resume with both non-dhe and dhe kex mode, but unacceptable
# initial key_share. Should resume with a key_share following an HRR
$proxy->clear();
$proxy->clientflags("-sess_in ".$session);
$proxy->serverflags("-curves P-256");
$testtype = BOTH_KEX_MODES;
$proxy->start();
checkhandshake($proxy, checkhandshake::HRR_RESUME_HANDSHAKE,
checkhandshake::DEFAULT_EXTENSIONS
| checkhandshake::PSK_KEX_MODES_EXTENSION
| checkhandshake::KEY_SHARE_SRV_EXTENSION
| checkhandshake::KEY_SHARE_HRR_EXTENSION
| checkhandshake::PSK_CLI_EXTENSION
| checkhandshake::PSK_SRV_EXTENSION,
"Resume with both kex modes and HRR");
#Test 9: Attempt a resume with dhe kex mode only and an unacceptable initial
# key_share. Should resume with a key_share following an HRR
$proxy->clear();
$proxy->clientflags("-sess_in ".$session);
$proxy->serverflags("-curves P-256");
$testtype = DHE_KEX_MODE_ONLY;
$proxy->start();
checkhandshake($proxy, checkhandshake::HRR_RESUME_HANDSHAKE,
checkhandshake::DEFAULT_EXTENSIONS
| checkhandshake::PSK_KEX_MODES_EXTENSION
| checkhandshake::KEY_SHARE_SRV_EXTENSION
| checkhandshake::KEY_SHARE_HRR_EXTENSION
| checkhandshake::PSK_CLI_EXTENSION
| checkhandshake::PSK_SRV_EXTENSION,
"Resume with dhe kex mode and HRR");
#Test 10: Attempt a resume with both non-dhe and dhe kex mode, unacceptable
# initial key_share and no overlapping groups. Should resume without a
# key_share
$proxy->clear();
$proxy->clientflags("-allow_no_dhe_kex -curves P-384 -sess_in ".$session);
$proxy->serverflags("-allow_no_dhe_kex -curves P-256");
$testtype = BOTH_KEX_MODES;
$proxy->start();
checkhandshake($proxy, checkhandshake::RESUME_HANDSHAKE,
checkhandshake::DEFAULT_EXTENSIONS
| checkhandshake::PSK_KEX_MODES_EXTENSION
| checkhandshake::PSK_CLI_EXTENSION
| checkhandshake::PSK_SRV_EXTENSION,
"Resume with both kex modes, no overlapping groups");
#Test 11: Attempt a resume with dhe kex mode only, unacceptable
# initial key_share and no overlapping groups. Should fail
$proxy->clear();
$proxy->clientflags("-curves P-384 -sess_in ".$session);
$proxy->serverflags("-curves P-256");
$testtype = DHE_KEX_MODE_ONLY;
$proxy->start();
ok(TLSProxy::Message->fail(), "Resume with dhe kex mode, no overlapping groups");
unlink $session;
sub modify_kex_modes_filter
{
my $proxy = shift;
# We're only interested in the initial ClientHello
return if ($proxy->flight != 0);
foreach my $message (@{$proxy->message_list}) {
if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
my $ext;
if ($testtype == EMPTY_EXTENSION) {
$ext = pack "C",
0x00; #List length
} elsif ($testtype == NON_DHE_KEX_MODE_ONLY) {
$ext = pack "C2",
0x01, #List length
0x00; #psk_ke
} elsif ($testtype == DHE_KEX_MODE_ONLY) {
$ext = pack "C2",
0x01, #List length
0x01; #psk_dhe_ke
} elsif ($testtype == UNKNOWN_KEX_MODES) {
$ext = pack "C3",
0x02, #List length
0xfe, #unknown
0xff; #unknown
} elsif ($testtype == BOTH_KEX_MODES) {
#We deliberately list psk_ke first...should still use psk_dhe_ke
$ext = pack "C3",
0x02, #List length
0x00, #psk_ke
0x01; #psk_dhe_ke
}
if ($testtype == DELETE_EXTENSION) {
$message->delete_extension(
TLSProxy::Message::EXT_PSK_KEX_MODES);
} else {
$message->set_extension(
TLSProxy::Message::EXT_PSK_KEX_MODES, $ext);
}
$message->repack();
}
}
}