test/recipes/70-test_sslsigalgs.t

   1 #! /usr/bin/env perl
   2 # Copyright 2016 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 };
  46
  47 #Note: Throughout this test we override the default ciphersuites where TLSv1.2
  48 #      is expected to ensure that a ServerKeyExchange message is sent that uses
  49 #      the sigalgs
  50
  51 #Test 1: Default sig algs should succeed
  52 $proxy->start() or plan skip_all => "Unable to start up Proxy for tests";
  53 plan tests => 18;
  54 ok(TLSProxy::Message->success, "Default sigalgs");
  55 my $testtype;
  56
  57 SKIP: {
  58     skip "TLSv1.3 disabled", 5 if disabled("tls1_3");
  59
  60     $proxy->filter(\&sigalgs_filter);
  61
  62     #Test 2: Sending no sig algs extension in TLSv1.3 should fail
  63     $proxy->clear();
  64     $testtype = NO_SIG_ALGS_EXT;
  65     $proxy->start();
  66     ok(TLSProxy::Message->fail, "No TLSv1.3 sigalgs");
  67
  68     #Test 3: Sending an empty sig algs extension in TLSv1.3 should fail
  69     $proxy->clear();
  70     $testtype = EMPTY_SIG_ALGS_EXT;
  71     $proxy->start();
  72     ok(TLSProxy::Message->fail, "Empty TLSv1.3 sigalgs");
  73
  74     #Test 4: Sending a list with no recognised sig algs in TLSv1.3 should fail
  75     $proxy->clear();
  76     $testtype = NO_KNOWN_SIG_ALGS;
  77     $proxy->start();
  78     ok(TLSProxy::Message->fail, "No known TLSv1.3 sigalgs");
  79
  80     #Test 5: Sending a sig algs list without pss for an RSA cert in TLSv1.3
  81     #        should fail
  82     $proxy->clear();
  83     $testtype = NO_PSS_SIG_ALGS;
  84     $proxy->start();
  85     ok(TLSProxy::Message->fail, "No PSS TLSv1.3 sigalgs");
  86
  87     #Test 6: Sending only TLSv1.3 PSS sig algs in TLSv1.3 should succeed
  88     #TODO(TLS1.3): Do we need to verify the cert to make sure its a PSS only
  89     #cert in this case?
  90     $proxy->clear();
  91     $testtype = PSS_ONLY_SIG_ALGS;
  92     $proxy->start();
  93     ok(TLSProxy::Message->success, "PSS only sigalgs in TLSv1.3");
  94 }
  95
  96 SKIP: {
  97     skip "EC or TLSv1.3 disabled", 1
  98         if disabled("tls1_3") || disabled("ec");
  99     #Test 7: Sending a valid sig algs list but not including a sig type that
 100     #        matches the certificate should fail in TLSv1.3.
 101     $proxy->clear();
 102     $proxy->clientflags("-sigalgs ECDSA+SHA256");
 103     $proxy->filter(undef);
 104     $proxy->start();
 105     ok(TLSProxy::Message->fail, "No matching TLSv1.3 sigalgs");
 106 }
 107
 108 SKIP: {
 109     skip "EC, TLSv1.3 or TLSv1.2 disabled", 1
 110         if disabled("tls1_2") || disabled("tls1_3") || disabled("ec");
 111
 112     #Test 8: Sending a full list of TLSv1.3 sig algs but negotiating TLSv1.2
 113     #        should succeed
 114     $proxy->clear();
 115     $proxy->serverflags("-no_tls1_3");
 116     $proxy->ciphers("ECDHE-RSA-AES128-SHA:TLS13-AES-128-GCM-SHA256");
 117     $proxy->filter(undef);
 118     $proxy->start();
 119     ok(TLSProxy::Message->success, "TLSv1.3 client TLSv1.2 server");
 120 }
 121
 122 SKIP: {
 123     skip "EC or TLSv1.2 disabled", 8 if disabled("tls1_2") || disabled("ec");
 124
 125     $proxy->filter(\&sigalgs_filter);
 126
 127     #Test 9: Sending no sig algs extension in TLSv1.2 should succeed
 128     $proxy->clear();
 129     $testtype = NO_SIG_ALGS_EXT;
 130     $proxy->clientflags("-no_tls1_3");
 131     $proxy->ciphers("ECDHE-RSA-AES128-SHA:TLS13-AES-128-GCM-SHA256");
 132     $proxy->start();
 133     ok(TLSProxy::Message->success, "No TLSv1.2 sigalgs");
 134
 135     #Test 10: Sending an empty sig algs extension in TLSv1.2 should fail
 136     $proxy->clear();
 137     $testtype = EMPTY_SIG_ALGS_EXT;
 138     $proxy->clientflags("-no_tls1_3");
 139     $proxy->ciphers("ECDHE-RSA-AES128-SHA:TLS13-AES-128-GCM-SHA256");
 140     $proxy->start();
 141     ok(TLSProxy::Message->fail, "Empty TLSv1.2 sigalgs");
 142
 143     #Test 11: Sending a list with no recognised sig algs in TLSv1.2 should fail
 144     $proxy->clear();
 145     $testtype = NO_KNOWN_SIG_ALGS;
 146     $proxy->clientflags("-no_tls1_3");
 147     $proxy->ciphers("ECDHE-RSA-AES128-SHA:TLS13-AES-128-GCM-SHA256");
 148     $proxy->start();
 149     ok(TLSProxy::Message->fail, "No known TLSv1.3 sigalgs");
 150
 151     #Test 12: Sending a sig algs list without pss for an RSA cert in TLSv1.2
 152     #         should succeed
 153     $proxy->clear();
 154     $testtype = NO_PSS_SIG_ALGS;
 155     $proxy->clientflags("-no_tls1_3");
 156     $proxy->ciphers("ECDHE-RSA-AES128-SHA:TLS13-AES-128-GCM-SHA256");
 157     $proxy->start();
 158     ok(TLSProxy::Message->success, "No PSS TLSv1.2 sigalgs");
 159
 160     #Test 13: Sending only TLSv1.3 PSS sig algs in TLSv1.2 should succeed
 161     $proxy->clear();
 162     $testtype = PSS_ONLY_SIG_ALGS;
 163     $proxy->serverflags("-no_tls1_3");
 164     $proxy->ciphers("ECDHE-RSA-AES128-SHA:TLS13-AES-128-GCM-SHA256");
 165     $proxy->start();
 166     ok(TLSProxy::Message->success, "PSS only sigalgs in TLSv1.2");
 167
 168     #Test 14: Responding with a sig alg we did not send in TLSv1.2 should fail
 169     #         We send rsa_pkcs1_sha256 and respond with rsa_pss_sha256
 170     #         TODO(TLS1.3): Add a similar test to the TLSv1.3 section above
 171     #         when we have an API capable of configuring the TLSv1.3 sig algs
 172     $proxy->clear();
 173     $testtype = PSS_ONLY_SIG_ALGS;
 174     $proxy->clientflags("-no_tls1_3 -sigalgs RSA+SHA256");
 175     $proxy->ciphers("ECDHE-RSA-AES128-SHA:TLS13-AES-128-GCM-SHA256");
 176     $proxy->start();
 177     ok(TLSProxy::Message->fail, "Sigalg we did not send in TLSv1.2");
 178
 179     #Test 15: Sending a valid sig algs list but not including a sig type that
 180     #         matches the certificate should fail in TLSv1.2
 181     $proxy->clear();
 182     $proxy->clientflags("-no_tls1_3 -sigalgs ECDSA+SHA256");
 183     $proxy->ciphers("ECDHE-RSA-AES128-SHA:TLS13-AES-128-GCM-SHA256");
 184     $proxy->filter(undef);
 185     $proxy->start();
 186     ok(TLSProxy::Message->fail, "No matching TLSv1.2 sigalgs");
 187     $proxy->filter(\&sigalgs_filter);
 188
 189     #Test 16: No sig algs extension, ECDSA cert, TLSv1.2 should succeed
 190     $proxy->clear();
 191     $testtype = NO_SIG_ALGS_EXT;
 192     $proxy->clientflags("-no_tls1_3");
 193     $proxy->serverflags("-cert " . srctop_file("test", "certs",
 194                                                "server-ecdsa-cert.pem") .
 195                         " -key " . srctop_file("test", "certs",
 196                                                "server-ecdsa-key.pem")),
 197     $proxy->ciphers("ECDHE-ECDSA-AES128-SHA:TLS13-AES-128-GCM-SHA256");
 198     $proxy->start();
 199     ok(TLSProxy::Message->success, "No TLSv1.2 sigalgs, ECDSA");
 200 }
 201
 202 my ($dsa_status, $sha1_status, $sha224_status);
 203 SKIP: {
 204     skip "TLSv1.3 disabled", 2 if disabled("tls1_3") || disabled("dsa");
 205     #Test 17: signature_algorithms with 1.3-only ClientHello
 206     $testtype = PURE_SIGALGS;
 207     $dsa_status = $sha1_status = $sha224_status = 0;
 208     $proxy->clear();
 209     $proxy->clientflags("-tls1_3");
 210     $proxy->filter(\&modify_sigalgs_filter);
 211     $proxy->start();
 212     ok($dsa_status && $sha1_status && $sha224_status,
 213        "DSA/SHA2 sigalg sent for 1.3-only ClientHello");
 214
 215     #Test 18: signature_algorithms with backwards compatible ClientHello
 216     $testtype = COMPAT_SIGALGS;
 217     $dsa_status = $sha1_status = $sha224_status = 0;
 218     $proxy->clear();
 219     $proxy->filter(\&modify_sigalgs_filter);
 220     $proxy->start();
 221     ok($dsa_status && $sha1_status && $sha224_status,
 222        "DSA sigalg not sent for compat ClientHello");
 223 }
 224
 225
 226
 227 sub sigalgs_filter
 228 {
 229     my $proxy = shift;
 230
 231     # We're only interested in the initial ClientHello
 232     if ($proxy->flight != 0) {
 233         return;
 234     }
 235
 236     foreach my $message (@{$proxy->message_list}) {
 237         if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
 238             if ($testtype == NO_SIG_ALGS_EXT) {
 239                 $message->delete_extension(TLSProxy::Message::EXT_SIG_ALGS);
 240             } else {
 241                 my $sigalg;
 242                 if ($testtype == EMPTY_SIG_ALGS_EXT) {
 243                     $sigalg = pack "C2", 0x00, 0x00;
 244                 } elsif ($testtype == NO_KNOWN_SIG_ALGS) {
 245                     $sigalg = pack "C4", 0x00, 0x02, 0xff, 0xff;
 246                 } elsif ($testtype == NO_PSS_SIG_ALGS) {
 247                     #No PSS sig algs - just send rsa_pkcs1_sha256
 248                     $sigalg = pack "C4", 0x00, 0x02, 0x04, 0x01;
 249                 } else {
 250                     #PSS sig algs only - just send rsa_pss_rsae_sha256
 251                     $sigalg = pack "C4", 0x00, 0x02, 0x08, 0x04;
 252                 }
 253                 $message->set_extension(TLSProxy::Message::EXT_SIG_ALGS, $sigalg);
 254             }
 255
 256             $message->repack();
 257         }
 258     }
 259 }
 260
 261 sub modify_sigalgs_filter
 262 {
 263     my $proxy = shift;
 264
 265     # We're only interested in the initial ClientHello
 266     return if ($proxy->flight != 0);
 267
 268     foreach my $message (@{$proxy->message_list}) {
 269         my $ext;
 270         my @algs;
 271
 272         if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
 273             if ($testtype == PURE_SIGALGS) {
 274                 my $ok = 1;
 275                 $ext = $message->extension_data->{TLSProxy::Message::EXT_SIG_ALGS};
 276                 @algs = unpack('S>*', $ext);
 277                 # unpack will unpack the length as well
 278                 shift @algs;
 279                 foreach (@algs) {
 280                     if ($_ == TLSProxy::Message::SIG_ALG_DSA_SHA256
 281                         || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA384
 282                         || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA512
 283                         || $_ == TLSProxy::Message::OSSL_SIG_ALG_DSA_SHA224
 284                         || $_ == TLSProxy::Message::SIG_ALG_RSA_PKCS1_SHA1
 285                         || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA1
 286                         || $_ == TLSProxy::Message::SIG_ALG_ECDSA_SHA1) {
 287                         $ok = 0;
 288                     }
 289                 }
 290                 $sha1_status = $dsa_status = $sha224_status = 1 if ($ok);
 291             } elsif ($testtype == COMPAT_SIGALGS) {
 292                 $ext = $message->extension_data->{TLSProxy::Message::EXT_SIG_ALGS};
 293                 @algs = unpack('S>*', $ext);
 294                 # unpack will unpack the length as well
 295                 shift @algs;
 296                 foreach (@algs) {
 297                     if ($_ == TLSProxy::Message::SIG_ALG_DSA_SHA256
 298                         || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA384
 299                         || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA512) {
 300                         $dsa_status = 1;
 301                     }
 302                     if ($_ == TLSProxy::Message::SIG_ALG_RSA_PKCS1_SHA1
 303                         || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA1
 304                         || $_ == TLSProxy::Message::SIG_ALG_ECDSA_SHA1) {
 305                         $sha1_status = 1;
 306                     }
 307                     if ($_ == TLSProxy::Message::OSSL_SIG_ALG_RSA_PKCS1_SHA224
 308                         || $_ == TLSProxy::Message::OSSL_SIG_ALG_DSA_SHA224
 309                         || $_ == TLSProxy::Message::OSSL_SIG_ALG_ECDSA_SHA224) {
 310                         $sha224_status = 1;
 311                     }
 312                 }
 313             }
 314         }
 315     }
 316 }