70-test_tls13kexmodes.t revision 1.1.1.2 
1#! /usr/bin/env perl
2# Copyright 2017-2019 The OpenSSL Project Authors. All Rights Reserved.
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
9use strict;
10use OpenSSL::Test qw/:DEFAULT cmdstr srctop_file srctop_dir bldtop_dir/;
11use OpenSSL::Test::Utils;
12use File::Temp qw(tempfile);
13use TLSProxy::Proxy;
14use checkhandshake qw(checkhandshake @handmessages @extensions);
15
16my $test_name = "test_tls13kexmodes";
17setup($test_name);
18
19plan skip_all => "TLSProxy isn't usable on $^O"
20    if $^O =~ /^(VMS)$/;
21
22plan skip_all => "$test_name needs the dynamic engine feature enabled"
23    if disabled("engine") || disabled("dynamic-engine");
24
25plan skip_all => "$test_name needs the sock feature enabled"
26    if disabled("sock");
27
28plan skip_all => "$test_name needs TLSv1.3 enabled"
29    if disabled("tls1_3");
30
31$ENV{OPENSSL_ia32cap} = '~0x200000200000000';
32$ENV{CTLOG_FILE} = srctop_file("test", "ct", "log_list.conf");
33
34
35@handmessages = (
36    [TLSProxy::Message::MT_CLIENT_HELLO,
37        checkhandshake::ALL_HANDSHAKES],
38    [TLSProxy::Message::MT_SERVER_HELLO,
39        checkhandshake::HRR_HANDSHAKE | checkhandshake::HRR_RESUME_HANDSHAKE],
40    [TLSProxy::Message::MT_CLIENT_HELLO,
41        checkhandshake::HRR_HANDSHAKE | checkhandshake::HRR_RESUME_HANDSHAKE],
42    [TLSProxy::Message::MT_SERVER_HELLO,
43        checkhandshake::ALL_HANDSHAKES],
44    [TLSProxy::Message::MT_ENCRYPTED_EXTENSIONS,
45        checkhandshake::ALL_HANDSHAKES],
46    [TLSProxy::Message::MT_CERTIFICATE_REQUEST,
47        checkhandshake::CLIENT_AUTH_HANDSHAKE],
48    [TLSProxy::Message::MT_CERTIFICATE,
49        checkhandshake::ALL_HANDSHAKES & ~(checkhandshake::RESUME_HANDSHAKE | checkhandshake::HRR_RESUME_HANDSHAKE)],
50    [TLSProxy::Message::MT_CERTIFICATE_VERIFY,
51        checkhandshake::ALL_HANDSHAKES & ~(checkhandshake::RESUME_HANDSHAKE | checkhandshake::HRR_RESUME_HANDSHAKE)],
52    [TLSProxy::Message::MT_FINISHED,
53        checkhandshake::ALL_HANDSHAKES],
54    [TLSProxy::Message::MT_CERTIFICATE,
55        checkhandshake::CLIENT_AUTH_HANDSHAKE],
56    [TLSProxy::Message::MT_CERTIFICATE_VERIFY,
57        checkhandshake::CLIENT_AUTH_HANDSHAKE],
58    [TLSProxy::Message::MT_FINISHED,
59        checkhandshake::ALL_HANDSHAKES],
60    [0, 0]
61);
62
63@extensions = (
64    [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SERVER_NAME,
65        TLSProxy::Message::CLIENT,
66        checkhandshake::SERVER_NAME_CLI_EXTENSION],
67    [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_STATUS_REQUEST,
68        TLSProxy::Message::CLIENT,
69        checkhandshake::STATUS_REQUEST_CLI_EXTENSION],
70    [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SUPPORTED_GROUPS,
71        TLSProxy::Message::CLIENT,
72        checkhandshake::DEFAULT_EXTENSIONS],
73    [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_EC_POINT_FORMATS,
74        TLSProxy::Message::CLIENT,
75        checkhandshake::DEFAULT_EXTENSIONS],
76    [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SIG_ALGS,
77        TLSProxy::Message::CLIENT,
78        checkhandshake::DEFAULT_EXTENSIONS],
79    [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_ALPN,
80        TLSProxy::Message::CLIENT,
81        checkhandshake::ALPN_CLI_EXTENSION],
82    [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SCT,
83        TLSProxy::Message::CLIENT,
84        checkhandshake::SCT_CLI_EXTENSION],
85    [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_ENCRYPT_THEN_MAC,
86        TLSProxy::Message::CLIENT,
87        checkhandshake::DEFAULT_EXTENSIONS],
88    [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_EXTENDED_MASTER_SECRET,
89        TLSProxy::Message::CLIENT,
90        checkhandshake::DEFAULT_EXTENSIONS],
91    [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SESSION_TICKET,
92        TLSProxy::Message::CLIENT,
93        checkhandshake::DEFAULT_EXTENSIONS],
94    [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_KEY_SHARE,
95        TLSProxy::Message::CLIENT,
96        checkhandshake::DEFAULT_EXTENSIONS],
97    [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SUPPORTED_VERSIONS,
98        TLSProxy::Message::CLIENT,
99        checkhandshake::DEFAULT_EXTENSIONS],
100    [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_PSK_KEX_MODES,
101        TLSProxy::Message::CLIENT,
102        checkhandshake::PSK_KEX_MODES_EXTENSION],
103    [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_PSK,
104        TLSProxy::Message::CLIENT,
105        checkhandshake::PSK_CLI_EXTENSION],
106
107    [TLSProxy::Message::MT_SERVER_HELLO, TLSProxy::Message::EXT_SUPPORTED_VERSIONS,
108        TLSProxy::Message::SERVER,
109        checkhandshake::DEFAULT_EXTENSIONS],
110    [TLSProxy::Message::MT_SERVER_HELLO, TLSProxy::Message::EXT_KEY_SHARE,
111        TLSProxy::Message::SERVER,
112        checkhandshake::KEY_SHARE_HRR_EXTENSION],
113
114    [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SERVER_NAME,
115        TLSProxy::Message::CLIENT,
116        checkhandshake::SERVER_NAME_CLI_EXTENSION],
117    [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_STATUS_REQUEST,
118        TLSProxy::Message::CLIENT,
119        checkhandshake::STATUS_REQUEST_CLI_EXTENSION],
120    [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SUPPORTED_GROUPS,
121        TLSProxy::Message::CLIENT,
122        checkhandshake::DEFAULT_EXTENSIONS],
123    [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_EC_POINT_FORMATS,
124        TLSProxy::Message::CLIENT,
125        checkhandshake::DEFAULT_EXTENSIONS],
126    [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SIG_ALGS,
127        TLSProxy::Message::CLIENT,
128        checkhandshake::DEFAULT_EXTENSIONS],
129    [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_ALPN,
130        TLSProxy::Message::CLIENT,
131        checkhandshake::ALPN_CLI_EXTENSION],
132    [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SCT,
133        TLSProxy::Message::CLIENT,
134        checkhandshake::SCT_CLI_EXTENSION],
135    [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_ENCRYPT_THEN_MAC,
136        TLSProxy::Message::CLIENT,
137        checkhandshake::DEFAULT_EXTENSIONS],
138    [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_EXTENDED_MASTER_SECRET,
139        TLSProxy::Message::CLIENT,
140        checkhandshake::DEFAULT_EXTENSIONS],
141    [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SESSION_TICKET,
142        TLSProxy::Message::CLIENT,
143        checkhandshake::DEFAULT_EXTENSIONS],
144    [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_KEY_SHARE,
145        TLSProxy::Message::CLIENT,
146        checkhandshake::DEFAULT_EXTENSIONS],
147    [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SUPPORTED_VERSIONS,
148        TLSProxy::Message::CLIENT,
149        checkhandshake::DEFAULT_EXTENSIONS],
150    [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_PSK_KEX_MODES,
151        TLSProxy::Message::CLIENT,
152        checkhandshake::PSK_KEX_MODES_EXTENSION],
153    [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_PSK,
154        TLSProxy::Message::CLIENT,
155        checkhandshake::PSK_CLI_EXTENSION],
156
157    [TLSProxy::Message::MT_SERVER_HELLO, TLSProxy::Message::EXT_SUPPORTED_VERSIONS,
158        TLSProxy::Message::SERVER,
159        checkhandshake::DEFAULT_EXTENSIONS],
160    [TLSProxy::Message::MT_SERVER_HELLO, TLSProxy::Message::EXT_KEY_SHARE,
161        TLSProxy::Message::SERVER,
162        checkhandshake::KEY_SHARE_SRV_EXTENSION],
163    [TLSProxy::Message::MT_SERVER_HELLO, TLSProxy::Message::EXT_PSK,
164        TLSProxy::Message::SERVER,
165        checkhandshake::PSK_SRV_EXTENSION],
166
167    [TLSProxy::Message::MT_CERTIFICATE, TLSProxy::Message::EXT_STATUS_REQUEST,
168        TLSProxy::Message::SERVER,
169        checkhandshake::STATUS_REQUEST_SRV_EXTENSION],
170    [0,0,0,0]
171);
172
173use constant {
174    DELETE_EXTENSION => 0,
175    EMPTY_EXTENSION => 1,
176    NON_DHE_KEX_MODE_ONLY => 2,
177    DHE_KEX_MODE_ONLY => 3,
178    UNKNOWN_KEX_MODES => 4,
179    BOTH_KEX_MODES => 5
180};
181
182my $proxy = TLSProxy::Proxy->new(
183    undef,
184    cmdstr(app(["openssl"]), display => 1),
185    srctop_file("apps", "server.pem"),
186    (!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE})
187);
188
189#Test 1: First get a session
190(undef, my $session) = tempfile();
191$proxy->clientflags("-sess_out ".$session);
192$proxy->serverflags("-servername localhost");
193$proxy->sessionfile($session);
194$proxy->start() or plan skip_all => "Unable to start up Proxy for tests";
195plan tests => 11;
196ok(TLSProxy::Message->success(), "Initial connection");
197
198#Test 2: Attempt a resume with no kex modes extension. Should not resume
199$proxy->clear();
200$proxy->clientflags("-sess_in ".$session);
201my $testtype = DELETE_EXTENSION;
202$proxy->filter(\&modify_kex_modes_filter);
203$proxy->start();
204checkhandshake($proxy, checkhandshake::DEFAULT_HANDSHAKE,
205               checkhandshake::DEFAULT_EXTENSIONS
206               | checkhandshake::KEY_SHARE_SRV_EXTENSION
207               | checkhandshake::PSK_CLI_EXTENSION,
208               "Resume with no kex modes");
209
210#Test 3: Attempt a resume with empty kex modes extension. Should fail (empty
211#        extension is invalid)
212$proxy->clear();
213$proxy->clientflags("-sess_in ".$session);
214$testtype = EMPTY_EXTENSION;
215$proxy->start();
216ok(TLSProxy::Message->fail(), "Resume with empty kex modes");
217
218#Test 4: Attempt a resume with non-dhe kex mode only. Should resume without a
219#        key_share
220$proxy->clear();
221$proxy->clientflags("-allow_no_dhe_kex -sess_in ".$session);
222$proxy->serverflags("-allow_no_dhe_kex");
223$testtype = NON_DHE_KEX_MODE_ONLY;
224$proxy->start();
225checkhandshake($proxy, checkhandshake::RESUME_HANDSHAKE,
226               checkhandshake::DEFAULT_EXTENSIONS
227               | checkhandshake::PSK_KEX_MODES_EXTENSION
228               | checkhandshake::PSK_CLI_EXTENSION
229               | checkhandshake::PSK_SRV_EXTENSION,
230               "Resume with non-dhe kex mode");
231
232#Test 5: Attempt a resume with dhe kex mode only. Should resume with a key_share
233$proxy->clear();
234$proxy->clientflags("-sess_in ".$session);
235$testtype = DHE_KEX_MODE_ONLY;
236$proxy->start();
237checkhandshake($proxy, checkhandshake::RESUME_HANDSHAKE,
238               checkhandshake::DEFAULT_EXTENSIONS
239               | checkhandshake::PSK_KEX_MODES_EXTENSION
240               | checkhandshake::KEY_SHARE_SRV_EXTENSION
241               | checkhandshake::PSK_CLI_EXTENSION
242               | checkhandshake::PSK_SRV_EXTENSION,
243               "Resume with non-dhe kex mode");
244
245#Test 6: Attempt a resume with only unrecognised kex modes. Should not resume
246$proxy->clear();
247$proxy->clientflags("-sess_in ".$session);
248$testtype = UNKNOWN_KEX_MODES;
249$proxy->start();
250checkhandshake($proxy, checkhandshake::DEFAULT_HANDSHAKE,
251               checkhandshake::DEFAULT_EXTENSIONS
252               | checkhandshake::PSK_KEX_MODES_EXTENSION
253               | checkhandshake::KEY_SHARE_SRV_EXTENSION
254               | checkhandshake::PSK_CLI_EXTENSION,
255               "Resume with empty kex modes");
256
257#Test 7: Attempt a resume with both non-dhe and dhe kex mode. Should resume with
258#        a key_share
259$proxy->clear();
260$proxy->clientflags("-sess_in ".$session);
261$testtype = BOTH_KEX_MODES;
262$proxy->start();
263checkhandshake($proxy, checkhandshake::RESUME_HANDSHAKE,
264               checkhandshake::DEFAULT_EXTENSIONS
265               | checkhandshake::PSK_KEX_MODES_EXTENSION
266               | checkhandshake::KEY_SHARE_SRV_EXTENSION
267               | checkhandshake::PSK_CLI_EXTENSION
268               | checkhandshake::PSK_SRV_EXTENSION,
269               "Resume with non-dhe kex mode");
270
271#Test 8: Attempt a resume with both non-dhe and dhe kex mode, but unacceptable
272#        initial key_share. Should resume with a key_share following an HRR
273$proxy->clear();
274$proxy->clientflags("-sess_in ".$session);
275$proxy->serverflags("-curves P-256");
276$testtype = BOTH_KEX_MODES;
277$proxy->start();
278checkhandshake($proxy, checkhandshake::HRR_RESUME_HANDSHAKE,
279               checkhandshake::DEFAULT_EXTENSIONS
280               | checkhandshake::PSK_KEX_MODES_EXTENSION
281               | checkhandshake::KEY_SHARE_SRV_EXTENSION
282               | checkhandshake::KEY_SHARE_HRR_EXTENSION
283               | checkhandshake::PSK_CLI_EXTENSION
284               | checkhandshake::PSK_SRV_EXTENSION,
285               "Resume with both kex modes and HRR");
286
287#Test 9: Attempt a resume with dhe kex mode only and an unacceptable initial
288#        key_share. Should resume with a key_share following an HRR
289$proxy->clear();
290$proxy->clientflags("-sess_in ".$session);
291$proxy->serverflags("-curves P-256");
292$testtype = DHE_KEX_MODE_ONLY;
293$proxy->start();
294checkhandshake($proxy, checkhandshake::HRR_RESUME_HANDSHAKE,
295               checkhandshake::DEFAULT_EXTENSIONS
296               | checkhandshake::PSK_KEX_MODES_EXTENSION
297               | checkhandshake::KEY_SHARE_SRV_EXTENSION
298               | checkhandshake::KEY_SHARE_HRR_EXTENSION
299               | checkhandshake::PSK_CLI_EXTENSION
300               | checkhandshake::PSK_SRV_EXTENSION,
301               "Resume with dhe kex mode and HRR");
302
303#Test 10: Attempt a resume with both non-dhe and dhe kex mode, unacceptable
304#         initial key_share and no overlapping groups. Should resume without a
305#         key_share
306$proxy->clear();
307$proxy->clientflags("-allow_no_dhe_kex -curves P-384 -sess_in ".$session);
308$proxy->serverflags("-allow_no_dhe_kex -curves P-256");
309$testtype = BOTH_KEX_MODES;
310$proxy->start();
311checkhandshake($proxy, checkhandshake::RESUME_HANDSHAKE,
312               checkhandshake::DEFAULT_EXTENSIONS
313               | checkhandshake::PSK_KEX_MODES_EXTENSION
314               | checkhandshake::PSK_CLI_EXTENSION
315               | checkhandshake::PSK_SRV_EXTENSION,
316               "Resume with both kex modes, no overlapping groups");
317
318#Test 11: Attempt a resume with dhe kex mode only, unacceptable
319#         initial key_share and no overlapping groups. Should fail
320$proxy->clear();
321$proxy->clientflags("-curves P-384 -sess_in ".$session);
322$proxy->serverflags("-curves P-256");
323$testtype = DHE_KEX_MODE_ONLY;
324$proxy->start();
325ok(TLSProxy::Message->fail(), "Resume with dhe kex mode, no overlapping groups");
326
327unlink $session;
328
329sub modify_kex_modes_filter
330{
331    my $proxy = shift;
332
333    # We're only interested in the initial ClientHello
334    return if ($proxy->flight != 0);
335
336    foreach my $message (@{$proxy->message_list}) {
337        if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
338            my $ext;
339
340            if ($testtype == EMPTY_EXTENSION) {
341                $ext = pack "C",
342                    0x00;       #List length
343            } elsif ($testtype == NON_DHE_KEX_MODE_ONLY) {
344                $ext = pack "C2",
345                    0x01,       #List length
346                    0x00;       #psk_ke
347            } elsif ($testtype == DHE_KEX_MODE_ONLY) {
348                $ext = pack "C2",
349                    0x01,       #List length
350                    0x01;       #psk_dhe_ke
351            } elsif ($testtype == UNKNOWN_KEX_MODES) {
352                $ext = pack "C3",
353                    0x02,       #List length
354                    0xfe,       #unknown
355                    0xff;       #unknown
356            } elsif ($testtype == BOTH_KEX_MODES) {
357                #We deliberately list psk_ke first...should still use psk_dhe_ke
358                $ext = pack "C3",
359                    0x02,       #List length
360                    0x00,       #psk_ke
361                    0x01;       #psk_dhe_ke
362            }
363
364            if ($testtype == DELETE_EXTENSION) {
365                $message->delete_extension(
366                    TLSProxy::Message::EXT_PSK_KEX_MODES);
367            } else {
368                $message->set_extension(
369                    TLSProxy::Message::EXT_PSK_KEX_MODES, $ext);
370            }
371
372            $message->repack();
373        }
374    }
375}
376