test/recipes/70-test_sslsigalgs.t

   1 #! /usr/bin/env perl
   2 # Copyright 2016-2018 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
   9 use strict;
  10 use OpenSSL::Test qw/:DEFAULT cmdstr srctop_file bldtop_dir/;
  11 use OpenSSL::Test::Utils;
  12 use TLSProxy::Proxy;
  13
  14 my $test_name = "test_sslsigalgs";
  15 setup($test_name);
  16
  17 plan skip_all => "TLSProxy isn't usable on $^O"
  18     if $^O =~ /^(VMS)$/;
  19
  20 plan skip_all => "$test_name needs the dynamic engine feature enabled"
  21     if disabled("engine") || disabled("dynamic-engine");
  22
  23 plan skip_all => "$test_name needs the sock feature enabled"
  24     if disabled("sock");
  25
  26 plan skip_all => "$test_name needs TLS1.2 or TLS1.3 enabled"
  27     if disabled("tls1_2") && disabled("tls1_3");
  28
  29 $ENV{OPENSSL_ia32cap} = '~0x200000200000000';
  30 my $proxy = TLSProxy::Proxy->new(
  31     undef,
  32     cmdstr(app(["openssl"]), display => 1),
  33     srctop_file("apps", "server.pem"),
  34     (!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE})
  35 );
  36
  37 use constant {
  38     NO_SIG_ALGS_EXT => 0,
  39     EMPTY_SIG_ALGS_EXT => 1,
  40     NO_KNOWN_SIG_ALGS => 2,
  41     NO_PSS_SIG_ALGS => 3,
  42     PSS_ONLY_SIG_ALGS => 4,
  43     PURE_SIGALGS => 5,
  44     COMPAT_SIGALGS => 6,
  45     SIGALGS_CERT_ALL => 7,
  46     SIGALGS_CERT_PKCS => 8,
  47     SIGALGS_CERT_INVALID => 9
  48 };
  49
  50 #Note: Throughout this test we override the default ciphersuites where TLSv1.2
  51 #      is expected to ensure that a ServerKeyExchange message is sent that uses
  52 #      the sigalgs
  53
  54 #Test 1: Default sig algs should succeed
  55 $proxy->start() or plan skip_all => "Unable to start up Proxy for tests";
  56 plan tests => 21;
  57 ok(TLSProxy::Message->success, "Default sigalgs");
  58 my $testtype;
  59
  60 SKIP: {
  61     skip "TLSv1.3 disabled", 5 if disabled("tls1_3");
  62
  63     $proxy->filter(\&sigalgs_filter);
  64
  65     #Test 2: Sending no sig algs extension in TLSv1.3 should fail
  66     $proxy->clear();
  67     $testtype = NO_SIG_ALGS_EXT;
  68     $proxy->start();
  69     ok(TLSProxy::Message->fail, "No TLSv1.3 sigalgs");
  70
  71     #Test 3: Sending an empty sig algs extension in TLSv1.3 should fail
  72     $proxy->clear();
  73     $testtype = EMPTY_SIG_ALGS_EXT;
  74     $proxy->start();
  75     ok(TLSProxy::Message->fail, "Empty TLSv1.3 sigalgs");
  76
  77     #Test 4: Sending a list with no recognised sig algs in TLSv1.3 should fail
  78     $proxy->clear();
  79     $testtype = NO_KNOWN_SIG_ALGS;
  80     $proxy->start();
  81     ok(TLSProxy::Message->fail, "No known TLSv1.3 sigalgs");
  82
  83     #Test 5: Sending a sig algs list without pss for an RSA cert in TLSv1.3
  84     #        should fail
  85     $proxy->clear();
  86     $testtype = NO_PSS_SIG_ALGS;
  87     $proxy->start();
  88     ok(TLSProxy::Message->fail, "No PSS TLSv1.3 sigalgs");
  89
  90     #Test 6: Sending only TLSv1.3 PSS sig algs in TLSv1.3 should succeed
  91     #TODO(TLS1.3): Do we need to verify the cert to make sure its a PSS only
  92     #cert in this case?
  93     $proxy->clear();
  94     $testtype = PSS_ONLY_SIG_ALGS;
  95     $proxy->start();
  96     ok(TLSProxy::Message->success, "PSS only sigalgs in TLSv1.3");
  97 }
  98
  99 SKIP: {
 100     skip "EC or TLSv1.3 disabled", 1
 101         if disabled("tls1_3") || disabled("ec");
 102     #Test 7: Sending a valid sig algs list but not including a sig type that
 103     #        matches the certificate should fail in TLSv1.3.
 104     $proxy->clear();
 105     $proxy->clientflags("-sigalgs ECDSA+SHA256");
 106     $proxy->filter(undef);
 107     $proxy->start();
 108     ok(TLSProxy::Message->fail, "No matching TLSv1.3 sigalgs");
 109 }
 110
 111 SKIP: {
 112     skip "EC, TLSv1.3 or TLSv1.2 disabled", 1
 113         if disabled("tls1_2") || disabled("tls1_3") || disabled("ec");
 114
 115     #Test 8: Sending a full list of TLSv1.3 sig algs but negotiating TLSv1.2
 116     #        should succeed
 117     $proxy->clear();
 118     $proxy->serverflags("-no_tls1_3");
 119     $proxy->ciphers("ECDHE-RSA-AES128-SHA:TLS13-AES-128-GCM-SHA256");
 120     $proxy->filter(undef);
 121     $proxy->start();
 122     ok(TLSProxy::Message->success, "TLSv1.3 client TLSv1.2 server");
 123 }
 124
 125 SKIP: {
 126     skip "EC or TLSv1.2 disabled", 8 if disabled("tls1_2") || disabled("ec");
 127
 128     $proxy->filter(\&sigalgs_filter);
 129
 130     #Test 9: Sending no sig algs extension in TLSv1.2 should succeed
 131     $proxy->clear();
 132     $testtype = NO_SIG_ALGS_EXT;
 133     $proxy->clientflags("-no_tls1_3");
 134     $proxy->ciphers("ECDHE-RSA-AES128-SHA:TLS13-AES-128-GCM-SHA256");
 135     $proxy->start();
 136     ok(TLSProxy::Message->success, "No TLSv1.2 sigalgs");
 137
 138     #Test 10: Sending an empty sig algs extension in TLSv1.2 should fail
 139     $proxy->clear();
 140     $testtype = EMPTY_SIG_ALGS_EXT;
 141     $proxy->clientflags("-no_tls1_3");
 142     $proxy->ciphers("ECDHE-RSA-AES128-SHA:TLS13-AES-128-GCM-SHA256");
 143     $proxy->start();
 144     ok(TLSProxy::Message->fail, "Empty TLSv1.2 sigalgs");
 145
 146     #Test 11: Sending a list with no recognised sig algs in TLSv1.2 should fail
 147     $proxy->clear();
 148     $testtype = NO_KNOWN_SIG_ALGS;
 149     $proxy->clientflags("-no_tls1_3");
 150     $proxy->ciphers("ECDHE-RSA-AES128-SHA:TLS13-AES-128-GCM-SHA256");
 151     $proxy->start();
 152     ok(TLSProxy::Message->fail, "No known TLSv1.3 sigalgs");
 153
 154     #Test 12: Sending a sig algs list without pss for an RSA cert in TLSv1.2
 155     #         should succeed
 156     $proxy->clear();
 157     $testtype = NO_PSS_SIG_ALGS;
 158     $proxy->clientflags("-no_tls1_3");
 159     $proxy->ciphers("ECDHE-RSA-AES128-SHA:TLS13-AES-128-GCM-SHA256");
 160     $proxy->start();
 161     ok(TLSProxy::Message->success, "No PSS TLSv1.2 sigalgs");
 162
 163     #Test 13: Sending only TLSv1.3 PSS sig algs in TLSv1.2 should succeed
 164     $proxy->clear();
 165     $testtype = PSS_ONLY_SIG_ALGS;
 166     $proxy->serverflags("-no_tls1_3");
 167     $proxy->ciphers("ECDHE-RSA-AES128-SHA:TLS13-AES-128-GCM-SHA256");
 168     $proxy->start();
 169     ok(TLSProxy::Message->success, "PSS only sigalgs in TLSv1.2");
 170
 171     #Test 14: Responding with a sig alg we did not send in TLSv1.2 should fail
 172     #         We send rsa_pkcs1_sha256 and respond with rsa_pss_rsae_sha256
 173     #         TODO(TLS1.3): Add a similar test to the TLSv1.3 section above
 174     #         when we have an API capable of configuring the TLSv1.3 sig algs
 175     $proxy->clear();
 176     $testtype = PSS_ONLY_SIG_ALGS;
 177     $proxy->clientflags("-no_tls1_3 -sigalgs RSA+SHA256");
 178     $proxy->ciphers("ECDHE-RSA-AES128-SHA:TLS13-AES-128-GCM-SHA256");
 179     $proxy->start();
 180     ok(TLSProxy::Message->fail, "Sigalg we did not send in TLSv1.2");
 181
 182     #Test 15: Sending a valid sig algs list but not including a sig type that
 183     #         matches the certificate should fail in TLSv1.2
 184     $proxy->clear();
 185     $proxy->clientflags("-no_tls1_3 -sigalgs ECDSA+SHA256");
 186     $proxy->ciphers("ECDHE-RSA-AES128-SHA:TLS13-AES-128-GCM-SHA256");
 187     $proxy->filter(undef);
 188     $proxy->start();
 189     ok(TLSProxy::Message->fail, "No matching TLSv1.2 sigalgs");
 190     $proxy->filter(\&sigalgs_filter);
 191
 192     #Test 16: No sig algs extension, ECDSA cert, TLSv1.2 should succeed
 193     $proxy->clear();
 194     $testtype = NO_SIG_ALGS_EXT;
 195     $proxy->clientflags("-no_tls1_3");
 196     $proxy->serverflags("-cert " . srctop_file("test", "certs",
 197                                                "server-ecdsa-cert.pem") .
 198                         " -key " . srctop_file("test", "certs",
 199                                                "server-ecdsa-key.pem")),
 200     $proxy->ciphers("ECDHE-ECDSA-AES128-SHA:TLS13-AES-128-GCM-SHA256");
 201     $proxy->start();
 202     ok(TLSProxy::Message->success, "No TLSv1.2 sigalgs, ECDSA");
 203 }
 204
 205 my ($dsa_status, $sha1_status, $sha224_status);
 206 SKIP: {
 207     skip "TLSv1.3 disabled", 2 if disabled("tls1_3") || disabled("dsa");
 208     #Test 17: signature_algorithms with 1.3-only ClientHello
 209     $testtype = PURE_SIGALGS;
 210     $dsa_status = $sha1_status = $sha224_status = 0;
 211     $proxy->clear();
 212     $proxy->clientflags("-tls1_3");
 213     $proxy->filter(\&modify_sigalgs_filter);
 214     $proxy->start();
 215     ok($dsa_status && $sha1_status && $sha224_status,
 216        "DSA/SHA2 sigalg sent for 1.3-only ClientHello");
 217
 218     #Test 18: signature_algorithms with backwards compatible ClientHello
 219     SKIP: {
 220         skip "TLSv1.2 disabled", 1 if disabled("tls1_2");
 221         $testtype = COMPAT_SIGALGS;
 222         $dsa_status = $sha1_status = $sha224_status = 0;
 223         $proxy->clear();
 224         $proxy->filter(\&modify_sigalgs_filter);
 225         $proxy->start();
 226         ok($dsa_status && $sha1_status && $sha224_status,
 227            "DSA sigalg not sent for compat ClientHello");
 228    }
 229 }
 230
 231 SKIP: {
 232     skip "TLSv1.3 disabled", 3 if disabled("tls1_3");
 233     #Test 19: Insert signature_algorithms_cert that match normal sigalgs
 234     $testtype = SIGALGS_CERT_ALL;
 235     $proxy->clear();
 236     $proxy->filter(\&modify_sigalgs_cert_filter);
 237     $proxy->start();
 238     ok(TLSProxy::Message->success, "sigalgs_cert in TLSv1.3");
 239
 240     #Test 19: Insert signature_algorithms_cert that forces PKCS#1 cert
 241     $testtype = SIGALGS_CERT_PKCS;
 242     $proxy->clear();
 243     $proxy->filter(\&modify_sigalgs_cert_filter);
 244     $proxy->start();
 245     ok(TLSProxy::Message->success, "sigalgs_cert in TLSv1.3 with PKCS#1 cert");
 246
 247     #Test 19: Insert signature_algorithms_cert that fails
 248     $testtype = SIGALGS_CERT_INVALID;
 249     $proxy->clear();
 250     $proxy->filter(\&modify_sigalgs_cert_filter);
 251     $proxy->start();
 252     ok(TLSProxy::Message->fail, "No matching certificate for sigalgs_cert");
 253 }
 254
 255
 256
 257 sub sigalgs_filter
 258 {
 259     my $proxy = shift;
 260
 261     # We're only interested in the initial ClientHello
 262     if ($proxy->flight != 0) {
 263         return;
 264     }
 265
 266     foreach my $message (@{$proxy->message_list}) {
 267         if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
 268             if ($testtype == NO_SIG_ALGS_EXT) {
 269                 $message->delete_extension(TLSProxy::Message::EXT_SIG_ALGS);
 270             } else {
 271                 my $sigalg;
 272                 if ($testtype == EMPTY_SIG_ALGS_EXT) {
 273                     $sigalg = pack "C2", 0x00, 0x00;
 274                 } elsif ($testtype == NO_KNOWN_SIG_ALGS) {
 275                     $sigalg = pack "C4", 0x00, 0x02, 0xff, 0xff;
 276                 } elsif ($testtype == NO_PSS_SIG_ALGS) {
 277                     #No PSS sig algs - just send rsa_pkcs1_sha256
 278                     $sigalg = pack "C4", 0x00, 0x02, 0x04, 0x01;
 279                 } else {
 280                     #PSS sig algs only - just send rsa_pss_rsae_sha256
 281                     $sigalg = pack "C4", 0x00, 0x02, 0x08, 0x04;
 282                 }
 283                 $message->set_extension(TLSProxy::Message::EXT_SIG_ALGS, $sigalg);
 284             }
 285
 286             $message->repack();
 287         }
 288     }
 289 }
 290
 291 sub modify_sigalgs_filter
 292 {
 293     my $proxy = shift;
 294
 295     # We're only interested in the initial ClientHello
 296     return if ($proxy->flight != 0);
 297
 298     foreach my $message (@{$proxy->message_list}) {
 299         my $ext;
 300         my @algs;
 301
 302         if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
 303             if ($testtype == PURE_SIGALGS) {
 304                 my $ok = 1;
 305                 $ext = $message->extension_data->{TLSProxy::Message::EXT_SIG_ALGS};
 306                 @algs = unpack('S>*', $ext);
 307                 # unpack will unpack the length as well
 308                 shift @algs;
 309                 foreach (@algs) {
 310                     if ($_ == TLSProxy::Message::SIG_ALG_DSA_SHA256
 311                         || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA384
 312                         || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA512
 313                         || $_ == TLSProxy::Message::OSSL_SIG_ALG_DSA_SHA224
 314                         || $_ == TLSProxy::Message::SIG_ALG_RSA_PKCS1_SHA1
 315                         || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA1
 316                         || $_ == TLSProxy::Message::SIG_ALG_ECDSA_SHA1) {
 317                         $ok = 0;
 318                     }
 319                 }
 320                 $sha1_status = $dsa_status = $sha224_status = 1 if ($ok);
 321             } elsif ($testtype == COMPAT_SIGALGS) {
 322                 $ext = $message->extension_data->{TLSProxy::Message::EXT_SIG_ALGS};
 323                 @algs = unpack('S>*', $ext);
 324                 # unpack will unpack the length as well
 325                 shift @algs;
 326                 foreach (@algs) {
 327                     if ($_ == TLSProxy::Message::SIG_ALG_DSA_SHA256
 328                         || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA384
 329                         || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA512) {
 330                         $dsa_status = 1;
 331                     }
 332                     if ($_ == TLSProxy::Message::SIG_ALG_RSA_PKCS1_SHA1
 333                         || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA1
 334                         || $_ == TLSProxy::Message::SIG_ALG_ECDSA_SHA1) {
 335                         $sha1_status = 1;
 336                     }
 337                     if ($_ == TLSProxy::Message::OSSL_SIG_ALG_RSA_PKCS1_SHA224
 338                         || $_ == TLSProxy::Message::OSSL_SIG_ALG_DSA_SHA224
 339                         || $_ == TLSProxy::Message::OSSL_SIG_ALG_ECDSA_SHA224) {
 340                         $sha224_status = 1;
 341                     }
 342                 }
 343             }
 344         }
 345     }
 346 }
 347
 348 sub modify_sigalgs_cert_filter
 349 {
 350     my $proxy = shift;
 351
 352     # We're only interested in the initial ClientHello
 353     if ($proxy->flight != 0) {
 354         return;
 355     }
 356
 357     foreach my $message (@{$proxy->message_list}) {
 358         if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
 359             my $sigs;
 360             # two byte length at front of sigs, then two-byte sigschemes
 361             if ($testtype == SIGALGS_CERT_ALL) {
 362                 $sigs = pack "C26", 0x00, 0x18,
 363                              # rsa_pkcs_sha{256,512}  rsa_pss_rsae_sha{256,512}
 364                              0x04, 0x01,  0x06, 0x01,  0x08, 0x04,  0x08, 0x06,
 365                              # ed25518    ed448        rsa_pss_pss_sha{256,512}
 366                              0x08, 0x07,  0x08, 0x08,  0x08, 0x09,  0x08, 0x0b,
 367                              # ecdsa_secp{256,512}     rsa+sha1     ecdsa+sha1
 368                              0x04, 0x03,  0x06, 0x03,  0x02, 0x01,  0x02, 0x03;
 369             } elsif ($testtype == SIGALGS_CERT_PKCS) {
 370                 $sigs = pack "C10", 0x00, 0x08,
 371                              # rsa_pkcs_sha{256,384,512,1}
 372                              0x04, 0x01,  0x05, 0x01,  0x06, 0x01,  0x02, 0x01;
 373             } elsif ($testtype == SIGALGS_CERT_INVALID) {
 374                 $sigs = pack "C4", 0x00, 0x02,
 375                              # unregistered codepoint
 376                              0xb2, 0x6f;
 377             }
 378             $message->set_extension(TLSProxy::Message::EXT_SIG_ALGS_CERT, $sigs);
 379             $message->repack();
 380         }
 381     }
 382 }