test/recipes/70-test_tls13kexmodes.t

   1 #! /usr/bin/env perl
   2 # Copyright 2017-2021 The OpenSSL Project Authors. All Rights Reserved.
   3 #
   4 # Licensed under the Apache License 2.0 (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 srctop_dir bldtop_dir/;
  11 use OpenSSL::Test::Utils;
  12 use File::Temp qw(tempfile);
  13 use TLSProxy::Proxy;
  14 use checkhandshake qw(checkhandshake @handmessages @extensions);
  15
  16 my $test_name = "test_tls13kexmodes";
  17 setup($test_name);
  18
  19 plan skip_all => "TLSProxy isn't usable on $^O"
  20     if $^O =~ /^(VMS)$/;
  21
  22 plan skip_all => "$test_name needs the dynamic engine feature enabled"
  23     if disabled("engine") || disabled("dynamic-engine");
  24
  25 plan skip_all => "$test_name needs the sock feature enabled"
  26     if disabled("sock");
  27
  28 plan skip_all => "$test_name needs TLSv1.3 enabled"
  29     if disabled("tls1_3") || (disabled("ec") && disabled("dh"));
  30
  31 plan skip_all => "$test_name needs EC enabled"
  32     if disabled("ec");
  33
  34 $ENV{OPENSSL_ia32cap} = '~0x200000200000000';
  35
  36
  37 @handmessages = (
  38     [TLSProxy::Message::MT_CLIENT_HELLO,
  39         checkhandshake::ALL_HANDSHAKES],
  40     [TLSProxy::Message::MT_SERVER_HELLO,
  41         checkhandshake::HRR_HANDSHAKE | checkhandshake::HRR_RESUME_HANDSHAKE],
  42     [TLSProxy::Message::MT_CLIENT_HELLO,
  43         checkhandshake::HRR_HANDSHAKE | checkhandshake::HRR_RESUME_HANDSHAKE],
  44     [TLSProxy::Message::MT_SERVER_HELLO,
  45         checkhandshake::ALL_HANDSHAKES],
  46     [TLSProxy::Message::MT_ENCRYPTED_EXTENSIONS,
  47         checkhandshake::ALL_HANDSHAKES],
  48     [TLSProxy::Message::MT_CERTIFICATE_REQUEST,
  49         checkhandshake::CLIENT_AUTH_HANDSHAKE],
  50     [TLSProxy::Message::MT_CERTIFICATE,
  51         checkhandshake::ALL_HANDSHAKES & ~(checkhandshake::RESUME_HANDSHAKE | checkhandshake::HRR_RESUME_HANDSHAKE)],
  52     [TLSProxy::Message::MT_CERTIFICATE_VERIFY,
  53         checkhandshake::ALL_HANDSHAKES & ~(checkhandshake::RESUME_HANDSHAKE | checkhandshake::HRR_RESUME_HANDSHAKE)],
  54     [TLSProxy::Message::MT_FINISHED,
  55         checkhandshake::ALL_HANDSHAKES],
  56     [TLSProxy::Message::MT_CERTIFICATE,
  57         checkhandshake::CLIENT_AUTH_HANDSHAKE],
  58     [TLSProxy::Message::MT_CERTIFICATE_VERIFY,
  59         checkhandshake::CLIENT_AUTH_HANDSHAKE],
  60     [TLSProxy::Message::MT_FINISHED,
  61         checkhandshake::ALL_HANDSHAKES],
  62     [0, 0]
  63 );
  64
  65 @extensions = (
  66     [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SERVER_NAME,
  67         TLSProxy::Message::CLIENT,
  68         checkhandshake::SERVER_NAME_CLI_EXTENSION],
  69     [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_STATUS_REQUEST,
  70         TLSProxy::Message::CLIENT,
  71         checkhandshake::STATUS_REQUEST_CLI_EXTENSION],
  72     [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SUPPORTED_GROUPS,
  73         TLSProxy::Message::CLIENT,
  74         checkhandshake::DEFAULT_EXTENSIONS],
  75     [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_EC_POINT_FORMATS,
  76         TLSProxy::Message::CLIENT,
  77         checkhandshake::DEFAULT_EXTENSIONS],
  78     [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SIG_ALGS,
  79         TLSProxy::Message::CLIENT,
  80         checkhandshake::DEFAULT_EXTENSIONS],
  81     [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_ALPN,
  82         TLSProxy::Message::CLIENT,
  83         checkhandshake::ALPN_CLI_EXTENSION],
  84     [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SCT,
  85         TLSProxy::Message::CLIENT,
  86         checkhandshake::SCT_CLI_EXTENSION],
  87     [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_ENCRYPT_THEN_MAC,
  88         TLSProxy::Message::CLIENT,
  89         checkhandshake::DEFAULT_EXTENSIONS],
  90     [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_EXTENDED_MASTER_SECRET,
  91         TLSProxy::Message::CLIENT,
  92         checkhandshake::DEFAULT_EXTENSIONS],
  93     [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SESSION_TICKET,
  94         TLSProxy::Message::CLIENT,
  95         checkhandshake::DEFAULT_EXTENSIONS],
  96     [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_KEY_SHARE,
  97         TLSProxy::Message::CLIENT,
  98         checkhandshake::DEFAULT_EXTENSIONS],
  99     [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SUPPORTED_VERSIONS,
 100         TLSProxy::Message::CLIENT,
 101         checkhandshake::DEFAULT_EXTENSIONS],
 102     [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_PSK_KEX_MODES,
 103         TLSProxy::Message::CLIENT,
 104         checkhandshake::PSK_KEX_MODES_EXTENSION],
 105     [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_PSK,
 106         TLSProxy::Message::CLIENT,
 107         checkhandshake::PSK_CLI_EXTENSION],
 108
 109     [TLSProxy::Message::MT_SERVER_HELLO, TLSProxy::Message::EXT_SUPPORTED_VERSIONS,
 110         TLSProxy::Message::SERVER,
 111         checkhandshake::DEFAULT_EXTENSIONS],
 112     [TLSProxy::Message::MT_SERVER_HELLO, TLSProxy::Message::EXT_KEY_SHARE,
 113         TLSProxy::Message::SERVER,
 114         checkhandshake::KEY_SHARE_HRR_EXTENSION],
 115
 116     [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SERVER_NAME,
 117         TLSProxy::Message::CLIENT,
 118         checkhandshake::SERVER_NAME_CLI_EXTENSION],
 119     [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_STATUS_REQUEST,
 120         TLSProxy::Message::CLIENT,
 121         checkhandshake::STATUS_REQUEST_CLI_EXTENSION],
 122     [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SUPPORTED_GROUPS,
 123         TLSProxy::Message::CLIENT,
 124         checkhandshake::DEFAULT_EXTENSIONS],
 125     [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_EC_POINT_FORMATS,
 126         TLSProxy::Message::CLIENT,
 127         checkhandshake::DEFAULT_EXTENSIONS],
 128     [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SIG_ALGS,
 129         TLSProxy::Message::CLIENT,
 130         checkhandshake::DEFAULT_EXTENSIONS],
 131     [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_ALPN,
 132         TLSProxy::Message::CLIENT,
 133         checkhandshake::ALPN_CLI_EXTENSION],
 134     [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SCT,
 135         TLSProxy::Message::CLIENT,
 136         checkhandshake::SCT_CLI_EXTENSION],
 137     [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_ENCRYPT_THEN_MAC,
 138         TLSProxy::Message::CLIENT,
 139         checkhandshake::DEFAULT_EXTENSIONS],
 140     [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_EXTENDED_MASTER_SECRET,
 141         TLSProxy::Message::CLIENT,
 142         checkhandshake::DEFAULT_EXTENSIONS],
 143     [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SESSION_TICKET,
 144         TLSProxy::Message::CLIENT,
 145         checkhandshake::DEFAULT_EXTENSIONS],
 146     [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_KEY_SHARE,
 147         TLSProxy::Message::CLIENT,
 148         checkhandshake::DEFAULT_EXTENSIONS],
 149     [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_SUPPORTED_VERSIONS,
 150         TLSProxy::Message::CLIENT,
 151         checkhandshake::DEFAULT_EXTENSIONS],
 152     [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_PSK_KEX_MODES,
 153         TLSProxy::Message::CLIENT,
 154         checkhandshake::PSK_KEX_MODES_EXTENSION],
 155     [TLSProxy::Message::MT_CLIENT_HELLO, TLSProxy::Message::EXT_PSK,
 156         TLSProxy::Message::CLIENT,
 157         checkhandshake::PSK_CLI_EXTENSION],
 158
 159     [TLSProxy::Message::MT_SERVER_HELLO, TLSProxy::Message::EXT_SUPPORTED_VERSIONS,
 160         TLSProxy::Message::SERVER,
 161         checkhandshake::DEFAULT_EXTENSIONS],
 162     [TLSProxy::Message::MT_SERVER_HELLO, TLSProxy::Message::EXT_KEY_SHARE,
 163         TLSProxy::Message::SERVER,
 164         checkhandshake::KEY_SHARE_SRV_EXTENSION],
 165     [TLSProxy::Message::MT_SERVER_HELLO, TLSProxy::Message::EXT_PSK,
 166         TLSProxy::Message::SERVER,
 167         checkhandshake::PSK_SRV_EXTENSION],
 168
 169     [TLSProxy::Message::MT_CERTIFICATE, TLSProxy::Message::EXT_STATUS_REQUEST,
 170         TLSProxy::Message::SERVER,
 171         checkhandshake::STATUS_REQUEST_SRV_EXTENSION],
 172     [0,0,0,0]
 173 );
 174
 175 use constant {
 176     DELETE_EXTENSION => 0,
 177     EMPTY_EXTENSION => 1,
 178     NON_DHE_KEX_MODE_ONLY => 2,
 179     DHE_KEX_MODE_ONLY => 3,
 180     UNKNOWN_KEX_MODES => 4,
 181     BOTH_KEX_MODES => 5
 182 };
 183
 184 my $proxy = TLSProxy::Proxy->new(
 185     undef,
 186     cmdstr(app(["openssl"]), display => 1),
 187     srctop_file("apps", "server.pem"),
 188     (!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE})
 189 );
 190
 191 #Test 1: First get a session
 192 (undef, my $session) = tempfile();
 193 $proxy->clientflags("-sess_out ".$session);
 194 $proxy->serverflags("-servername localhost");
 195 $proxy->sessionfile($session);
 196 $proxy->start() or plan skip_all => "Unable to start up Proxy for tests";
 197 plan tests => 11;
 198 ok(TLSProxy::Message->success(), "Initial connection");
 199
 200 #Test 2: Attempt a resume with no kex modes extension. Should not resume
 201 $proxy->clear();
 202 $proxy->clientflags("-sess_in ".$session);
 203 my $testtype = DELETE_EXTENSION;
 204 $proxy->filter(\&modify_kex_modes_filter);
 205 $proxy->start();
 206 checkhandshake($proxy, checkhandshake::DEFAULT_HANDSHAKE,
 207                checkhandshake::DEFAULT_EXTENSIONS
 208                | checkhandshake::KEY_SHARE_SRV_EXTENSION
 209                | checkhandshake::PSK_CLI_EXTENSION,
 210                "Resume with no kex modes");
 211
 212 #Test 3: Attempt a resume with empty kex modes extension. Should fail (empty
 213 #        extension is invalid)
 214 $proxy->clear();
 215 $proxy->clientflags("-sess_in ".$session);
 216 $testtype = EMPTY_EXTENSION;
 217 $proxy->start();
 218 ok(TLSProxy::Message->fail(), "Resume with empty kex modes");
 219
 220 #Test 4: Attempt a resume with non-dhe kex mode only. Should resume without a
 221 #        key_share
 222 $proxy->clear();
 223 $proxy->clientflags("-allow_no_dhe_kex -sess_in ".$session);
 224 $proxy->serverflags("-allow_no_dhe_kex");
 225 $testtype = NON_DHE_KEX_MODE_ONLY;
 226 $proxy->start();
 227 checkhandshake($proxy, checkhandshake::RESUME_HANDSHAKE,
 228                checkhandshake::DEFAULT_EXTENSIONS
 229                | checkhandshake::PSK_KEX_MODES_EXTENSION
 230                | checkhandshake::PSK_CLI_EXTENSION
 231                | checkhandshake::PSK_SRV_EXTENSION,
 232                "Resume with non-dhe kex mode");
 233
 234 #Test 5: Attempt a resume with dhe kex mode only. Should resume with a key_share
 235 $proxy->clear();
 236 $proxy->clientflags("-sess_in ".$session);
 237 $testtype = DHE_KEX_MODE_ONLY;
 238 $proxy->start();
 239 checkhandshake($proxy, checkhandshake::RESUME_HANDSHAKE,
 240                checkhandshake::DEFAULT_EXTENSIONS
 241                | checkhandshake::PSK_KEX_MODES_EXTENSION
 242                | checkhandshake::KEY_SHARE_SRV_EXTENSION
 243                | checkhandshake::PSK_CLI_EXTENSION
 244                | checkhandshake::PSK_SRV_EXTENSION,
 245                "Resume with non-dhe kex mode");
 246
 247 #Test 6: Attempt a resume with only unrecognised kex modes. Should not resume
 248 $proxy->clear();
 249 $proxy->clientflags("-sess_in ".$session);
 250 $testtype = UNKNOWN_KEX_MODES;
 251 $proxy->start();
 252 checkhandshake($proxy, checkhandshake::DEFAULT_HANDSHAKE,
 253                checkhandshake::DEFAULT_EXTENSIONS
 254                | checkhandshake::PSK_KEX_MODES_EXTENSION
 255                | checkhandshake::KEY_SHARE_SRV_EXTENSION
 256                | checkhandshake::PSK_CLI_EXTENSION,
 257                "Resume with empty kex modes");
 258
 259 #Test 7: Attempt a resume with both non-dhe and dhe kex mode. Should resume with
 260 #        a key_share
 261 $proxy->clear();
 262 $proxy->clientflags("-sess_in ".$session);
 263 $testtype = BOTH_KEX_MODES;
 264 $proxy->start();
 265 checkhandshake($proxy, checkhandshake::RESUME_HANDSHAKE,
 266                checkhandshake::DEFAULT_EXTENSIONS
 267                | checkhandshake::PSK_KEX_MODES_EXTENSION
 268                | checkhandshake::KEY_SHARE_SRV_EXTENSION
 269                | checkhandshake::PSK_CLI_EXTENSION
 270                | checkhandshake::PSK_SRV_EXTENSION,
 271                "Resume with non-dhe kex mode");
 272
 273 #Test 8: Attempt a resume with both non-dhe and dhe kex mode, but unacceptable
 274 #        initial key_share. Should resume with a key_share following an HRR
 275 $proxy->clear();
 276 $proxy->clientflags("-sess_in ".$session);
 277 $proxy->serverflags("-curves P-256");
 278 $testtype = BOTH_KEX_MODES;
 279 $proxy->start();
 280 checkhandshake($proxy, checkhandshake::HRR_RESUME_HANDSHAKE,
 281                checkhandshake::DEFAULT_EXTENSIONS
 282                | checkhandshake::PSK_KEX_MODES_EXTENSION
 283                | checkhandshake::KEY_SHARE_SRV_EXTENSION
 284                | checkhandshake::KEY_SHARE_HRR_EXTENSION
 285                | checkhandshake::PSK_CLI_EXTENSION
 286                | checkhandshake::PSK_SRV_EXTENSION,
 287                "Resume with both kex modes and HRR");
 288
 289 #Test 9: Attempt a resume with dhe kex mode only and an unacceptable initial
 290 #        key_share. Should resume with a key_share following an HRR
 291 $proxy->clear();
 292 $proxy->clientflags("-sess_in ".$session);
 293 $proxy->serverflags("-curves P-256");
 294 $testtype = DHE_KEX_MODE_ONLY;
 295 $proxy->start();
 296 checkhandshake($proxy, checkhandshake::HRR_RESUME_HANDSHAKE,
 297                checkhandshake::DEFAULT_EXTENSIONS
 298                | checkhandshake::PSK_KEX_MODES_EXTENSION
 299                | checkhandshake::KEY_SHARE_SRV_EXTENSION
 300                | checkhandshake::KEY_SHARE_HRR_EXTENSION
 301                | checkhandshake::PSK_CLI_EXTENSION
 302                | checkhandshake::PSK_SRV_EXTENSION,
 303                "Resume with dhe kex mode and HRR");
 304
 305 #Test 10: Attempt a resume with both non-dhe and dhe kex mode, unacceptable
 306 #         initial key_share and no overlapping groups. Should resume without a
 307 #         key_share
 308 $proxy->clear();
 309 $proxy->clientflags("-allow_no_dhe_kex -curves P-384 -sess_in ".$session);
 310 $proxy->serverflags("-allow_no_dhe_kex -curves P-256");
 311 $testtype = BOTH_KEX_MODES;
 312 $proxy->start();
 313 checkhandshake($proxy, checkhandshake::RESUME_HANDSHAKE,
 314                checkhandshake::DEFAULT_EXTENSIONS
 315                | checkhandshake::PSK_KEX_MODES_EXTENSION
 316                | checkhandshake::PSK_CLI_EXTENSION
 317                | checkhandshake::PSK_SRV_EXTENSION,
 318                "Resume with both kex modes, no overlapping groups");
 319
 320 #Test 11: Attempt a resume with dhe kex mode only, unacceptable
 321 #         initial key_share and no overlapping groups. Should fail
 322 $proxy->clear();
 323 $proxy->clientflags("-curves P-384 -sess_in ".$session);
 324 $proxy->serverflags("-curves P-256");
 325 $testtype = DHE_KEX_MODE_ONLY;
 326 $proxy->start();
 327 ok(TLSProxy::Message->fail(), "Resume with dhe kex mode, no overlapping groups");
 328
 329 unlink $session;
 330
 331 sub modify_kex_modes_filter
 332 {
 333     my $proxy = shift;
 334
 335     # We're only interested in the initial ClientHello
 336     return if ($proxy->flight != 0);
 337
 338     foreach my $message (@{$proxy->message_list}) {
 339         if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
 340             my $ext;
 341
 342             if ($testtype == EMPTY_EXTENSION) {
 343                 $ext = pack "C",
 344                     0x00;       #List length
 345             } elsif ($testtype == NON_DHE_KEX_MODE_ONLY) {
 346                 $ext = pack "C2",
 347                     0x01,       #List length
 348                     0x00;       #psk_ke
 349             } elsif ($testtype == DHE_KEX_MODE_ONLY) {
 350                 $ext = pack "C2",
 351                     0x01,       #List length
 352                     0x01;       #psk_dhe_ke
 353             } elsif ($testtype == UNKNOWN_KEX_MODES) {
 354                 $ext = pack "C3",
 355                     0x02,       #List length
 356                     0xfe,       #unknown
 357                     0xff;       #unknown
 358             } elsif ($testtype == BOTH_KEX_MODES) {
 359                 #We deliberately list psk_ke first...should still use psk_dhe_ke
 360                 $ext = pack "C3",
 361                     0x02,       #List length
 362                     0x00,       #psk_ke
 363                     0x01;       #psk_dhe_ke
 364             }
 365
 366             if ($testtype == DELETE_EXTENSION) {
 367                 $message->delete_extension(
 368                     TLSProxy::Message::EXT_PSK_KEX_MODES);
 369             } else {
 370                 $message->set_extension(
 371                     TLSProxy::Message::EXT_PSK_KEX_MODES, $ext);
 372             }
 373
 374             $message->repack();
 375         }
 376     }
 377 }