test/recipes/70-test_sslsigalgs.t - platform/external/openssl - Git at Google


            
            #! /usr/bin/env perl

            
            # Copyright 2016-2020 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 bldtop_dir/;

            
            use OpenSSL::Test::Utils;

            
            use TLSProxy::Proxy;


            my $test_name = "test_sslsigalgs";

            
            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 TLS1.2 or TLS1.3 enabled"

            
                if disabled("tls1_2") && disabled("tls1_3");


            $ENV{OPENSSL_ia32cap} = '~0x200000200000000';

            
            my $proxy = TLSProxy::Proxy->new(

            
                undef,

            
                cmdstr(app(["openssl"]), display => 1),

            
                srctop_file("apps", "server.pem"),

            
                (!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE})

            
            );


            use constant {

            
                NO_SIG_ALGS_EXT => 0,

            
                EMPTY_SIG_ALGS_EXT => 1,

            
                NO_KNOWN_SIG_ALGS => 2,

            
                NO_PSS_SIG_ALGS => 3,

            
                PSS_ONLY_SIG_ALGS => 4,

            
                PURE_SIGALGS => 5,

            
                COMPAT_SIGALGS => 6,

            
                SIGALGS_CERT_ALL => 7,

            
                SIGALGS_CERT_PKCS => 8,

            
                SIGALGS_CERT_INVALID => 9,

            
                UNRECOGNIZED_SIGALGS_CERT => 10,

            
                UNRECOGNIZED_SIGALG => 11

            
            };


            #Note: Throughout this test we override the default ciphersuites where TLSv1.2

            
            #      is expected to ensure that a ServerKeyExchange message is sent that uses

            
            #      the sigalgs


            #Test 1: Default sig algs should succeed

            
            $proxy->start() or plan skip_all => "Unable to start up Proxy for tests";

            
            plan tests => 26;

            
            ok(TLSProxy::Message->success, "Default sigalgs");

            
            my $testtype;


            SKIP: {

            
                skip "TLSv1.3 disabled", 6 if disabled("tls1_3");


                $proxy->filter(\&sigalgs_filter);


                #Test 2: Sending no sig algs extension in TLSv1.3 should fail

            
                $proxy->clear();

            
                $testtype = NO_SIG_ALGS_EXT;

            
                $proxy->start();

            
                ok(TLSProxy::Message->fail, "No TLSv1.3 sigalgs");


                #Test 3: Sending an empty sig algs extension in TLSv1.3 should fail

            
                $proxy->clear();

            
                $testtype = EMPTY_SIG_ALGS_EXT;

            
                $proxy->start();

            
                ok(TLSProxy::Message->fail, "Empty TLSv1.3 sigalgs");


                #Test 4: Sending a list with no recognised sig algs in TLSv1.3 should fail

            
                $proxy->clear();

            
                $testtype = NO_KNOWN_SIG_ALGS;

            
                $proxy->start();

            
                ok(TLSProxy::Message->fail, "No known TLSv1.3 sigalgs");


                #Test 5: Sending a sig algs list without pss for an RSA cert in TLSv1.3

            
                #        should fail

            
                $proxy->clear();

            
                $testtype = NO_PSS_SIG_ALGS;

            
                $proxy->start();

            
                ok(TLSProxy::Message->fail, "No PSS TLSv1.3 sigalgs");


                #Test 6: Sending only TLSv1.3 PSS sig algs in TLSv1.3 should succeed

            
                #TODO(TLS1.3): Do we need to verify the cert to make sure its a PSS only

            
                #cert in this case?

            
                $proxy->clear();

            
                $testtype = PSS_ONLY_SIG_ALGS;

            
                $proxy->start();

            
                ok(TLSProxy::Message->success, "PSS only sigalgs in TLSv1.3");


                #Test 7: Modify the CertificateVerify sigalg from rsa_pss_rsae_sha256 to

            
                #        rsa_pss_pss_sha256. This should fail because the public key OID

            
                #        in the certificate is rsaEncryption and not rsassaPss

            
                $proxy->filter(\&modify_cert_verify_sigalg);

            
                $proxy->clear();

            
                $proxy->start();

            
                ok(TLSProxy::Message->fail,

            
                   "Mismatch between CertVerify sigalg and public key OID");

            
            }


            SKIP: {

            
                skip "EC or TLSv1.3 disabled", 1

            
                    if disabled("tls1_3") || disabled("ec");

            
                #Test 8: Sending a valid sig algs list but not including a sig type that

            
                #        matches the certificate should fail in TLSv1.3.

            
                $proxy->clear();

            
                $proxy->clientflags("-sigalgs ECDSA+SHA256");

            
                $proxy->filter(undef);

            
                $proxy->start();

            
                ok(TLSProxy::Message->fail, "No matching TLSv1.3 sigalgs");

            
            }


            SKIP: {

            
                skip "EC, TLSv1.3 or TLSv1.2 disabled", 1

            
                    if disabled("tls1_2") || disabled("tls1_3") || disabled("ec");


                #Test 9: Sending a full list of TLSv1.3 sig algs but negotiating TLSv1.2

            
                #        should succeed

            
                $proxy->clear();

            
                $proxy->serverflags("-no_tls1_3");

            
                $proxy->ciphers("ECDHE-RSA-AES128-SHA");

            
                $proxy->filter(undef);

            
                $proxy->start();

            
                ok(TLSProxy::Message->success, "TLSv1.3 client TLSv1.2 server");

            
            }


            SKIP: {

            
                skip "EC or TLSv1.2 disabled", 10 if disabled("tls1_2") || disabled("ec");


                $proxy->filter(\&sigalgs_filter);


                #Test 10: Sending no sig algs extension in TLSv1.2 should succeed at

            
                #         security level 1

            
                $proxy->clear();

            
                $testtype = NO_SIG_ALGS_EXT;

            
                $proxy->clientflags("-no_tls1_3 -cipher DEFAULT\@SECLEVEL=1");

            
                $proxy->ciphers("ECDHE-RSA-AES128-SHA\@SECLEVEL=1");

            
                $proxy->start();

            
                ok(TLSProxy::Message->success, "No TLSv1.2 sigalgs seclevel 1");


                #Test 11: Sending no sig algs extension in TLSv1.2 should fail at security

            
                #         level 2 since it will try to use SHA1. Testing client at level 1,

            
                #         server level 2.

            
                $proxy->clear();

            
                $testtype = NO_SIG_ALGS_EXT;

            
                $proxy->clientflags("-tls1_2 -cipher DEFAULT\@SECLEVEL=1");

            
                $proxy->ciphers("DEFAULT\@SECLEVEL=2");

            
                $proxy->start();

            
                ok(TLSProxy::Message->fail, "No TLSv1.2 sigalgs server seclevel 2");


                #Test 12: Sending no sig algs extension in TLSv1.2 should fail at security

            
                #         level 2 since it will try to use SHA1. Testing client at level 2,

            
                #         server level 1.

            
                $proxy->clear();

            
                $testtype = NO_SIG_ALGS_EXT;

            
                $proxy->clientflags("-tls1_2 -cipher DEFAULT\@SECLEVEL=2");

            
                $proxy->ciphers("DEFAULT\@SECLEVEL=1");

            
                $proxy->start();

            
                ok(TLSProxy::Message->fail, "No TLSv1.2 sigalgs client seclevel 2");


                #Test 13: Sending an empty sig algs extension in TLSv1.2 should fail

            
                $proxy->clear();

            
                $testtype = EMPTY_SIG_ALGS_EXT;

            
                $proxy->clientflags("-no_tls1_3");

            
                $proxy->ciphers("ECDHE-RSA-AES128-SHA");

            
                $proxy->start();

            
                ok(TLSProxy::Message->fail, "Empty TLSv1.2 sigalgs");


                #Test 14: Sending a list with no recognised sig algs in TLSv1.2 should fail

            
                $proxy->clear();

            
                $testtype = NO_KNOWN_SIG_ALGS;

            
                $proxy->clientflags("-no_tls1_3");

            
                $proxy->ciphers("ECDHE-RSA-AES128-SHA");

            
                $proxy->start();

            
                ok(TLSProxy::Message->fail, "No known TLSv1.3 sigalgs");


                #Test 15: Sending a sig algs list without pss for an RSA cert in TLSv1.2

            
                #         should succeed

            
                $proxy->clear();

            
                $testtype = NO_PSS_SIG_ALGS;

            
                $proxy->clientflags("-no_tls1_3");

            
                $proxy->ciphers("ECDHE-RSA-AES128-SHA");

            
                $proxy->start();

            
                ok(TLSProxy::Message->success, "No PSS TLSv1.2 sigalgs");


                #Test 16: Sending only TLSv1.3 PSS sig algs in TLSv1.2 should succeed

            
                $proxy->clear();

            
                $testtype = PSS_ONLY_SIG_ALGS;

            
                $proxy->serverflags("-no_tls1_3");

            
                $proxy->ciphers("ECDHE-RSA-AES128-SHA");

            
                $proxy->start();

            
                ok(TLSProxy::Message->success, "PSS only sigalgs in TLSv1.2");


                #Test 17: Responding with a sig alg we did not send in TLSv1.2 should fail

            
                #         We send rsa_pkcs1_sha256 and respond with rsa_pss_rsae_sha256

            
                #         TODO(TLS1.3): Add a similar test to the TLSv1.3 section above

            
                #         when we have an API capable of configuring the TLSv1.3 sig algs

            
                $proxy->clear();

            
                $testtype = PSS_ONLY_SIG_ALGS;

            
                $proxy->clientflags("-no_tls1_3 -sigalgs RSA+SHA256");

            
                $proxy->ciphers("ECDHE-RSA-AES128-SHA");

            
                $proxy->start();

            
                ok(TLSProxy::Message->fail, "Sigalg we did not send in TLSv1.2");


                #Test 18: Sending a valid sig algs list but not including a sig type that

            
                #         matches the certificate should fail in TLSv1.2

            
                $proxy->clear();

            
                $proxy->clientflags("-no_tls1_3 -sigalgs ECDSA+SHA256");

            
                $proxy->ciphers("ECDHE-RSA-AES128-SHA");

            
                $proxy->filter(undef);

            
                $proxy->start();

            
                ok(TLSProxy::Message->fail, "No matching TLSv1.2 sigalgs");

            
                $proxy->filter(\&sigalgs_filter);


                #Test 19: No sig algs extension, ECDSA cert, TLSv1.2 should succeed

            
                $proxy->clear();

            
                $testtype = NO_SIG_ALGS_EXT;

            
                $proxy->clientflags("-no_tls1_3");

            
                $proxy->serverflags("-cert " . srctop_file("test", "certs",

            
                                                           "server-ecdsa-cert.pem") .

            
                                    " -key " . srctop_file("test", "certs",

            
                                                           "server-ecdsa-key.pem")),

            
                $proxy->ciphers("ECDHE-ECDSA-AES128-SHA");

            
                $proxy->start();

            
                ok(TLSProxy::Message->success, "No TLSv1.2 sigalgs, ECDSA");

            
            }


            my ($dsa_status, $sha1_status, $sha224_status);

            
            SKIP: {

            
                skip "TLSv1.3 disabled", 2 if disabled("tls1_3") || disabled("dsa");

            
                #Test 20: signature_algorithms with 1.3-only ClientHello

            
                $testtype = PURE_SIGALGS;

            
                $dsa_status = $sha1_status = $sha224_status = 0;

            
                $proxy->clear();

            
                $proxy->clientflags("-tls1_3");

            
                $proxy->filter(\&modify_sigalgs_filter);

            
                $proxy->start();

            
                ok($dsa_status && $sha1_status && $sha224_status,

            
                   "DSA/SHA2 sigalg sent for 1.3-only ClientHello");


                #Test 21: signature_algorithms with backwards compatible ClientHello

            
                SKIP: {

            
                    skip "TLSv1.2 disabled", 1 if disabled("tls1_2");

            
                    $testtype = COMPAT_SIGALGS;

            
                    $dsa_status = $sha1_status = $sha224_status = 0;

            
                    $proxy->clear();

            
                    $proxy->filter(\&modify_sigalgs_filter);

            
                    $proxy->start();

            
                    ok($dsa_status && $sha1_status && $sha224_status,

            
                       "DSA sigalg not sent for compat ClientHello");

            
               }

            
            }


            SKIP: {

            
                skip "TLSv1.3 disabled", 3 if disabled("tls1_3");

            
                #Test 22: Insert signature_algorithms_cert that match normal sigalgs

            
                $testtype = SIGALGS_CERT_ALL;

            
                $proxy->clear();

            
                $proxy->filter(\&modify_sigalgs_cert_filter);

            
                $proxy->start();

            
                ok(TLSProxy::Message->success, "sigalgs_cert in TLSv1.3");


                #Test 23: Insert signature_algorithms_cert that forces PKCS#1 cert

            
                $testtype = SIGALGS_CERT_PKCS;

            
                $proxy->clear();

            
                $proxy->filter(\&modify_sigalgs_cert_filter);

            
                $proxy->start();

            
                ok(TLSProxy::Message->success, "sigalgs_cert in TLSv1.3 with PKCS#1 cert");


                #Test 24: Insert signature_algorithms_cert that fails

            
                $testtype = SIGALGS_CERT_INVALID;

            
                $proxy->clear();

            
                $proxy->filter(\&modify_sigalgs_cert_filter);

            
                $proxy->start();

            
                ok(TLSProxy::Message->fail, "No matching certificate for sigalgs_cert");

            
            }


            SKIP: {

            
                skip "TLS 1.3 disabled", 2 if disabled("tls1_3");

            
                #Test 25: Send an unrecognized signature_algorithms_cert

            
                #        We should be able to skip over the unrecognized value and use a

            
                #        valid one that appears later in the list.

            
                $proxy->clear();

            
                $proxy->filter(\&inject_unrecognized_sigalg);

            
                $proxy->clientflags("-tls1_3");

            
                # Use -xcert to get SSL_check_chain() to run in the cert_cb.  This is

            
                # needed to trigger (e.g.) CVE-2020-1967

            
                $proxy->serverflags("" .

            
                        " -xcert " . srctop_file("test", "certs", "servercert.pem") .

            
                        " -xkey " . srctop_file("test", "certs", "serverkey.pem") .

            
                        " -xchain " . srctop_file("test", "certs", "rootcert.pem"));

            
                $testtype = UNRECOGNIZED_SIGALGS_CERT;

            
                $proxy->start();

            
                ok(TLSProxy::Message->success(), "Unrecognized sigalg_cert in ClientHello");


                #Test 26: Send an unrecognized signature_algorithms

            
                #        We should be able to skip over the unrecognized value and use a

            
                #        valid one that appears later in the list.

            
                $proxy->clear();

            
                $proxy->filter(\&inject_unrecognized_sigalg);

            
                $proxy->clientflags("-tls1_3");

            
                $proxy->serverflags("" .

            
                        " -xcert " . srctop_file("test", "certs", "servercert.pem") .

            
                        " -xkey " . srctop_file("test", "certs", "serverkey.pem") .

            
                        " -xchain " . srctop_file("test", "certs", "rootcert.pem"));

            
                $testtype = UNRECOGNIZED_SIGALG;

            
                $proxy->start();

            
                ok(TLSProxy::Message->success(), "Unrecognized sigalg in ClientHello");

            
            }


            sub sigalgs_filter

            
            {

            
                my $proxy = shift;


                # We're only interested in the initial ClientHello

            
                if ($proxy->flight != 0) {

            
                    return;

            
                }


                foreach my $message (@{$proxy->message_list}) {

            
                    if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {

            
                        if ($testtype == NO_SIG_ALGS_EXT) {

            
                            $message->delete_extension(TLSProxy::Message::EXT_SIG_ALGS);

            
                        } else {

            
                            my $sigalg;

            
                            if ($testtype == EMPTY_SIG_ALGS_EXT) {

            
                                $sigalg = pack "C2", 0x00, 0x00;

            
                            } elsif ($testtype == NO_KNOWN_SIG_ALGS) {

            
                                $sigalg = pack "C4", 0x00, 0x02, 0xff, 0xff;

            
                            } elsif ($testtype == NO_PSS_SIG_ALGS) {

            
                                #No PSS sig algs - just send rsa_pkcs1_sha256

            
                                $sigalg = pack "C4", 0x00, 0x02, 0x04, 0x01;

            
                            } else {

            
                                #PSS sig algs only - just send rsa_pss_rsae_sha256

            
                                $sigalg = pack "C4", 0x00, 0x02, 0x08, 0x04;

            
                            }

            
                            $message->set_extension(TLSProxy::Message::EXT_SIG_ALGS, $sigalg);

            
                        }


                        $message->repack();

            
                    }

            
                }

            
            }


            sub modify_sigalgs_filter

            
            {

            
                my $proxy = shift;


                # We're only interested in the initial ClientHello

            
                return if ($proxy->flight != 0);


                foreach my $message (@{$proxy->message_list}) {

            
                    my $ext;

            
                    my @algs;


                    if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {

            
                        if ($testtype == PURE_SIGALGS) {

            
                            my $ok = 1;

            
                            $ext = $message->extension_data->{TLSProxy::Message::EXT_SIG_ALGS};

            
                            @algs = unpack('S>*', $ext);

            
                            # unpack will unpack the length as well

            
                            shift @algs;

            
                            foreach (@algs) {

            
                                if ($_ == TLSProxy::Message::SIG_ALG_DSA_SHA256

            
                                    || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA384

            
                                    || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA512

            
                                    || $_ == TLSProxy::Message::OSSL_SIG_ALG_DSA_SHA224

            
                                    || $_ == TLSProxy::Message::SIG_ALG_RSA_PKCS1_SHA1

            
                                    || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA1

            
                                    || $_ == TLSProxy::Message::SIG_ALG_ECDSA_SHA1) {

            
                                    $ok = 0;

            
                                }

            
                            }

            
                            $sha1_status = $dsa_status = $sha224_status = 1 if ($ok);

            
                        } elsif ($testtype == COMPAT_SIGALGS) {

            
                            $ext = $message->extension_data->{TLSProxy::Message::EXT_SIG_ALGS};

            
                            @algs = unpack('S>*', $ext);

            
                            # unpack will unpack the length as well

            
                            shift @algs;

            
                            foreach (@algs) {

            
                                if ($_ == TLSProxy::Message::SIG_ALG_DSA_SHA256

            
                                    || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA384

            
                                    || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA512) {

            
                                    $dsa_status = 1;

            
                                }

            
                                if ($_ == TLSProxy::Message::SIG_ALG_RSA_PKCS1_SHA1

            
                                    || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA1

            
                                    || $_ == TLSProxy::Message::SIG_ALG_ECDSA_SHA1) {

            
                                    $sha1_status = 1;

            
                                }

            
                                if ($_ == TLSProxy::Message::OSSL_SIG_ALG_RSA_PKCS1_SHA224

            
                                    || $_ == TLSProxy::Message::OSSL_SIG_ALG_DSA_SHA224

            
                                    || $_ == TLSProxy::Message::OSSL_SIG_ALG_ECDSA_SHA224) {

            
                                    $sha224_status = 1;

            
                                }

            
                            }

            
                        }

            
                    }

            
                }

            
            }


            sub modify_sigalgs_cert_filter

            
            {

            
                my $proxy = shift;


                # We're only interested in the initial ClientHello

            
                if ($proxy->flight != 0) {

            
                    return;

            
                }


                foreach my $message (@{$proxy->message_list}) {

            
                    if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {

            
                        my $sigs;

            
                        # two byte length at front of sigs, then two-byte sigschemes

            
                        if ($testtype == SIGALGS_CERT_ALL) {

            
                            $sigs = pack "C26", 0x00, 0x18,

            
                                         # rsa_pkcs_sha{256,512}  rsa_pss_rsae_sha{256,512}

            
                                         0x04, 0x01,  0x06, 0x01,  0x08, 0x04,  0x08, 0x06,

            
                                         # ed25518    ed448        rsa_pss_pss_sha{256,512}

            
                                         0x08, 0x07,  0x08, 0x08,  0x08, 0x09,  0x08, 0x0b,

            
                                         # ecdsa_secp{256,512}     rsa+sha1     ecdsa+sha1

            
                                         0x04, 0x03,  0x06, 0x03,  0x02, 0x01,  0x02, 0x03;

            
                        } elsif ($testtype == SIGALGS_CERT_PKCS) {

            
                            $sigs = pack "C10", 0x00, 0x08,

            
                                         # rsa_pkcs_sha{256,384,512,1}

            
                                         0x04, 0x01,  0x05, 0x01,  0x06, 0x01,  0x02, 0x01;

            
                        } elsif ($testtype == SIGALGS_CERT_INVALID) {

            
                            $sigs = pack "C4", 0x00, 0x02,

            
                                         # unregistered codepoint

            
                                         0xb2, 0x6f;

            
                        }

            
                        $message->set_extension(TLSProxy::Message::EXT_SIG_ALGS_CERT, $sigs);

            
                        $message->repack();

            
                    }

            
                }

            
            }


            sub modify_cert_verify_sigalg

            
            {

            
                my $proxy = shift;


                # We're only interested in the CertificateVerify

            
                if ($proxy->flight != 1) {

            
                    return;

            
                }


                foreach my $message (@{$proxy->message_list}) {

            
                    if ($message->mt == TLSProxy::Message::MT_CERTIFICATE_VERIFY) {

            
                        $message->sigalg(TLSProxy::Message::SIG_ALG_RSA_PSS_PSS_SHA256);

            
                        $message->repack();

            
                    }

            
                }

            
            }


            sub inject_unrecognized_sigalg

            
            {

            
                my $proxy = shift;

            
                my $type;


                # We're only interested in the initial ClientHello

            
                if ($proxy->flight != 0) {

            
                    return;

            
                }

            
                if ($testtype == UNRECOGNIZED_SIGALGS_CERT) {

            
                    $type = TLSProxy::Message::EXT_SIG_ALGS_CERT;

            
                } elsif ($testtype == UNRECOGNIZED_SIGALG) {

            
                    $type = TLSProxy::Message::EXT_SIG_ALGS;

            
                } else {

            
                    return;

            
                }


                my $ext = pack "C8",

            
                    0x00, 0x06, #Extension length

            
                    0xfe, 0x18, #private use

            
                    0x04, 0x01, #rsa_pkcs1_sha256

            
                    0x08, 0x04; #rsa_pss_rsae_sha256;

            
                my $message = ${$proxy->message_list}[0];

            
                $message->set_extension($type, $ext);

            
                $message->repack;

            
            }
	#! /usr/bin/env perl
	# Copyright 2016-2020 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 bldtop_dir/;
	use OpenSSL::Test::Utils;
	use TLSProxy::Proxy;

	my $test_name = "test_sslsigalgs";
	setup($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 TLS1.2 or TLS1.3 enabled"
	if disabled("tls1_2") && disabled("tls1_3");

	$ENV{OPENSSL_ia32cap} = '~0x200000200000000';
	my $proxy = TLSProxy::Proxy->new(
	undef,
	cmdstr(app(["openssl"]), display => 1),
	srctop_file("apps", "server.pem"),
	(!$ENV{HARNESS_ACTIVE} \|\| $ENV{HARNESS_VERBOSE})
	);

	use constant {
	NO_SIG_ALGS_EXT => 0,
	EMPTY_SIG_ALGS_EXT => 1,
	NO_KNOWN_SIG_ALGS => 2,
	NO_PSS_SIG_ALGS => 3,
	PSS_ONLY_SIG_ALGS => 4,
	PURE_SIGALGS => 5,
	COMPAT_SIGALGS => 6,
	SIGALGS_CERT_ALL => 7,
	SIGALGS_CERT_PKCS => 8,
	SIGALGS_CERT_INVALID => 9,
	UNRECOGNIZED_SIGALGS_CERT => 10,
	UNRECOGNIZED_SIGALG => 11
	};

	#Note: Throughout this test we override the default ciphersuites where TLSv1.2
	# is expected to ensure that a ServerKeyExchange message is sent that uses
	# the sigalgs

	#Test 1: Default sig algs should succeed
	$proxy->start() or plan skip_all => "Unable to start up Proxy for tests";
	plan tests => 26;
	ok(TLSProxy::Message->success, "Default sigalgs");
	my $testtype;

	SKIP: {
	skip "TLSv1.3 disabled", 6 if disabled("tls1_3");

	$proxy->filter(\&sigalgs_filter);

	#Test 2: Sending no sig algs extension in TLSv1.3 should fail
	$proxy->clear();
	$testtype = NO_SIG_ALGS_EXT;
	$proxy->start();
	ok(TLSProxy::Message->fail, "No TLSv1.3 sigalgs");

	#Test 3: Sending an empty sig algs extension in TLSv1.3 should fail
	$proxy->clear();
	$testtype = EMPTY_SIG_ALGS_EXT;
	$proxy->start();
	ok(TLSProxy::Message->fail, "Empty TLSv1.3 sigalgs");

	#Test 4: Sending a list with no recognised sig algs in TLSv1.3 should fail
	$proxy->clear();
	$testtype = NO_KNOWN_SIG_ALGS;
	$proxy->start();
	ok(TLSProxy::Message->fail, "No known TLSv1.3 sigalgs");

	#Test 5: Sending a sig algs list without pss for an RSA cert in TLSv1.3
	# should fail
	$proxy->clear();
	$testtype = NO_PSS_SIG_ALGS;
	$proxy->start();
	ok(TLSProxy::Message->fail, "No PSS TLSv1.3 sigalgs");

	#Test 6: Sending only TLSv1.3 PSS sig algs in TLSv1.3 should succeed
	#TODO(TLS1.3): Do we need to verify the cert to make sure its a PSS only
	#cert in this case?
	$proxy->clear();
	$testtype = PSS_ONLY_SIG_ALGS;
	$proxy->start();
	ok(TLSProxy::Message->success, "PSS only sigalgs in TLSv1.3");

	#Test 7: Modify the CertificateVerify sigalg from rsa_pss_rsae_sha256 to
	# rsa_pss_pss_sha256. This should fail because the public key OID
	# in the certificate is rsaEncryption and not rsassaPss
	$proxy->filter(\&modify_cert_verify_sigalg);
	$proxy->clear();
	$proxy->start();
	ok(TLSProxy::Message->fail,
	"Mismatch between CertVerify sigalg and public key OID");
	}

	SKIP: {
	skip "EC or TLSv1.3 disabled", 1
	if disabled("tls1_3") \|\| disabled("ec");
	#Test 8: Sending a valid sig algs list but not including a sig type that
	# matches the certificate should fail in TLSv1.3.
	$proxy->clear();
	$proxy->clientflags("-sigalgs ECDSA+SHA256");
	$proxy->filter(undef);
	$proxy->start();
	ok(TLSProxy::Message->fail, "No matching TLSv1.3 sigalgs");
	}

	SKIP: {
	skip "EC, TLSv1.3 or TLSv1.2 disabled", 1
	if disabled("tls1_2") \|\| disabled("tls1_3") \|\| disabled("ec");

	#Test 9: Sending a full list of TLSv1.3 sig algs but negotiating TLSv1.2
	# should succeed
	$proxy->clear();
	$proxy->serverflags("-no_tls1_3");
	$proxy->ciphers("ECDHE-RSA-AES128-SHA");
	$proxy->filter(undef);
	$proxy->start();
	ok(TLSProxy::Message->success, "TLSv1.3 client TLSv1.2 server");
	}

	SKIP: {
	skip "EC or TLSv1.2 disabled", 10 if disabled("tls1_2") \|\| disabled("ec");

	$proxy->filter(\&sigalgs_filter);

	#Test 10: Sending no sig algs extension in TLSv1.2 should succeed at
	# security level 1
	$proxy->clear();
	$testtype = NO_SIG_ALGS_EXT;
	$proxy->clientflags("-no_tls1_3 -cipher DEFAULT\@SECLEVEL=1");
	$proxy->ciphers("ECDHE-RSA-AES128-SHA\@SECLEVEL=1");
	$proxy->start();
	ok(TLSProxy::Message->success, "No TLSv1.2 sigalgs seclevel 1");

	#Test 11: Sending no sig algs extension in TLSv1.2 should fail at security
	# level 2 since it will try to use SHA1. Testing client at level 1,
	# server level 2.
	$proxy->clear();
	$testtype = NO_SIG_ALGS_EXT;
	$proxy->clientflags("-tls1_2 -cipher DEFAULT\@SECLEVEL=1");
	$proxy->ciphers("DEFAULT\@SECLEVEL=2");
	$proxy->start();
	ok(TLSProxy::Message->fail, "No TLSv1.2 sigalgs server seclevel 2");

	#Test 12: Sending no sig algs extension in TLSv1.2 should fail at security
	# level 2 since it will try to use SHA1. Testing client at level 2,
	# server level 1.
	$proxy->clear();
	$testtype = NO_SIG_ALGS_EXT;
	$proxy->clientflags("-tls1_2 -cipher DEFAULT\@SECLEVEL=2");
	$proxy->ciphers("DEFAULT\@SECLEVEL=1");
	$proxy->start();
	ok(TLSProxy::Message->fail, "No TLSv1.2 sigalgs client seclevel 2");

	#Test 13: Sending an empty sig algs extension in TLSv1.2 should fail
	$proxy->clear();
	$testtype = EMPTY_SIG_ALGS_EXT;
	$proxy->clientflags("-no_tls1_3");
	$proxy->ciphers("ECDHE-RSA-AES128-SHA");
	$proxy->start();
	ok(TLSProxy::Message->fail, "Empty TLSv1.2 sigalgs");

	#Test 14: Sending a list with no recognised sig algs in TLSv1.2 should fail
	$proxy->clear();
	$testtype = NO_KNOWN_SIG_ALGS;
	$proxy->clientflags("-no_tls1_3");
	$proxy->ciphers("ECDHE-RSA-AES128-SHA");
	$proxy->start();
	ok(TLSProxy::Message->fail, "No known TLSv1.3 sigalgs");

	#Test 15: Sending a sig algs list without pss for an RSA cert in TLSv1.2
	# should succeed
	$proxy->clear();
	$testtype = NO_PSS_SIG_ALGS;
	$proxy->clientflags("-no_tls1_3");
	$proxy->ciphers("ECDHE-RSA-AES128-SHA");
	$proxy->start();
	ok(TLSProxy::Message->success, "No PSS TLSv1.2 sigalgs");

	#Test 16: Sending only TLSv1.3 PSS sig algs in TLSv1.2 should succeed
	$proxy->clear();
	$testtype = PSS_ONLY_SIG_ALGS;
	$proxy->serverflags("-no_tls1_3");
	$proxy->ciphers("ECDHE-RSA-AES128-SHA");
	$proxy->start();
	ok(TLSProxy::Message->success, "PSS only sigalgs in TLSv1.2");

	#Test 17: Responding with a sig alg we did not send in TLSv1.2 should fail
	# We send rsa_pkcs1_sha256 and respond with rsa_pss_rsae_sha256
	# TODO(TLS1.3): Add a similar test to the TLSv1.3 section above
	# when we have an API capable of configuring the TLSv1.3 sig algs
	$proxy->clear();
	$testtype = PSS_ONLY_SIG_ALGS;
	$proxy->clientflags("-no_tls1_3 -sigalgs RSA+SHA256");
	$proxy->ciphers("ECDHE-RSA-AES128-SHA");
	$proxy->start();
	ok(TLSProxy::Message->fail, "Sigalg we did not send in TLSv1.2");

	#Test 18: Sending a valid sig algs list but not including a sig type that
	# matches the certificate should fail in TLSv1.2
	$proxy->clear();
	$proxy->clientflags("-no_tls1_3 -sigalgs ECDSA+SHA256");
	$proxy->ciphers("ECDHE-RSA-AES128-SHA");
	$proxy->filter(undef);
	$proxy->start();
	ok(TLSProxy::Message->fail, "No matching TLSv1.2 sigalgs");
	$proxy->filter(\&sigalgs_filter);

	#Test 19: No sig algs extension, ECDSA cert, TLSv1.2 should succeed
	$proxy->clear();
	$testtype = NO_SIG_ALGS_EXT;
	$proxy->clientflags("-no_tls1_3");
	$proxy->serverflags("-cert " . srctop_file("test", "certs",
	"server-ecdsa-cert.pem") .
	" -key " . srctop_file("test", "certs",
	"server-ecdsa-key.pem")),
	$proxy->ciphers("ECDHE-ECDSA-AES128-SHA");
	$proxy->start();
	ok(TLSProxy::Message->success, "No TLSv1.2 sigalgs, ECDSA");
	}

	my ($dsa_status, $sha1_status, $sha224_status);
	SKIP: {
	skip "TLSv1.3 disabled", 2 if disabled("tls1_3") \|\| disabled("dsa");
	#Test 20: signature_algorithms with 1.3-only ClientHello
	$testtype = PURE_SIGALGS;
	$dsa_status = $sha1_status = $sha224_status = 0;
	$proxy->clear();
	$proxy->clientflags("-tls1_3");
	$proxy->filter(\&modify_sigalgs_filter);
	$proxy->start();
	ok($dsa_status && $sha1_status && $sha224_status,
	"DSA/SHA2 sigalg sent for 1.3-only ClientHello");

	#Test 21: signature_algorithms with backwards compatible ClientHello
	SKIP: {
	skip "TLSv1.2 disabled", 1 if disabled("tls1_2");
	$testtype = COMPAT_SIGALGS;
	$dsa_status = $sha1_status = $sha224_status = 0;
	$proxy->clear();
	$proxy->filter(\&modify_sigalgs_filter);
	$proxy->start();
	ok($dsa_status && $sha1_status && $sha224_status,
	"DSA sigalg not sent for compat ClientHello");
	}
	}

	SKIP: {
	skip "TLSv1.3 disabled", 3 if disabled("tls1_3");
	#Test 22: Insert signature_algorithms_cert that match normal sigalgs
	$testtype = SIGALGS_CERT_ALL;
	$proxy->clear();
	$proxy->filter(\&modify_sigalgs_cert_filter);
	$proxy->start();
	ok(TLSProxy::Message->success, "sigalgs_cert in TLSv1.3");

	#Test 23: Insert signature_algorithms_cert that forces PKCS#1 cert
	$testtype = SIGALGS_CERT_PKCS;
	$proxy->clear();
	$proxy->filter(\&modify_sigalgs_cert_filter);
	$proxy->start();
	ok(TLSProxy::Message->success, "sigalgs_cert in TLSv1.3 with PKCS#1 cert");

	#Test 24: Insert signature_algorithms_cert that fails
	$testtype = SIGALGS_CERT_INVALID;
	$proxy->clear();
	$proxy->filter(\&modify_sigalgs_cert_filter);
	$proxy->start();
	ok(TLSProxy::Message->fail, "No matching certificate for sigalgs_cert");
	}

	SKIP: {
	skip "TLS 1.3 disabled", 2 if disabled("tls1_3");
	#Test 25: Send an unrecognized signature_algorithms_cert
	# We should be able to skip over the unrecognized value and use a
	# valid one that appears later in the list.
	$proxy->clear();
	$proxy->filter(\&inject_unrecognized_sigalg);
	$proxy->clientflags("-tls1_3");
	# Use -xcert to get SSL_check_chain() to run in the cert_cb. This is
	# needed to trigger (e.g.) CVE-2020-1967
	$proxy->serverflags("" .
	" -xcert " . srctop_file("test", "certs", "servercert.pem") .
	" -xkey " . srctop_file("test", "certs", "serverkey.pem") .
	" -xchain " . srctop_file("test", "certs", "rootcert.pem"));
	$testtype = UNRECOGNIZED_SIGALGS_CERT;
	$proxy->start();
	ok(TLSProxy::Message->success(), "Unrecognized sigalg_cert in ClientHello");

	#Test 26: Send an unrecognized signature_algorithms
	# We should be able to skip over the unrecognized value and use a
	# valid one that appears later in the list.
	$proxy->clear();
	$proxy->filter(\&inject_unrecognized_sigalg);
	$proxy->clientflags("-tls1_3");
	$proxy->serverflags("" .
	" -xcert " . srctop_file("test", "certs", "servercert.pem") .
	" -xkey " . srctop_file("test", "certs", "serverkey.pem") .
	" -xchain " . srctop_file("test", "certs", "rootcert.pem"));
	$testtype = UNRECOGNIZED_SIGALG;
	$proxy->start();
	ok(TLSProxy::Message->success(), "Unrecognized sigalg in ClientHello");
	}



	sub sigalgs_filter
	{
	my $proxy = shift;

	# We're only interested in the initial ClientHello
	if ($proxy->flight != 0) {
	return;
	}

	foreach my $message (@{$proxy->message_list}) {
	if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
	if ($testtype == NO_SIG_ALGS_EXT) {
	$message->delete_extension(TLSProxy::Message::EXT_SIG_ALGS);
	} else {
	my $sigalg;
	if ($testtype == EMPTY_SIG_ALGS_EXT) {
	$sigalg = pack "C2", 0x00, 0x00;
	} elsif ($testtype == NO_KNOWN_SIG_ALGS) {
	$sigalg = pack "C4", 0x00, 0x02, 0xff, 0xff;
	} elsif ($testtype == NO_PSS_SIG_ALGS) {
	#No PSS sig algs - just send rsa_pkcs1_sha256
	$sigalg = pack "C4", 0x00, 0x02, 0x04, 0x01;
	} else {
	#PSS sig algs only - just send rsa_pss_rsae_sha256
	$sigalg = pack "C4", 0x00, 0x02, 0x08, 0x04;
	}
	$message->set_extension(TLSProxy::Message::EXT_SIG_ALGS, $sigalg);
	}

	$message->repack();
	}
	}
	}

	sub modify_sigalgs_filter
	{
	my $proxy = shift;

	# We're only interested in the initial ClientHello
	return if ($proxy->flight != 0);

	foreach my $message (@{$proxy->message_list}) {
	my $ext;
	my @algs;

	if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
	if ($testtype == PURE_SIGALGS) {
	my $ok = 1;
	$ext = $message->extension_data->{TLSProxy::Message::EXT_SIG_ALGS};
	@algs = unpack('S>*', $ext);
	# unpack will unpack the length as well
	shift @algs;
	foreach (@algs) {
	if ($_ == TLSProxy::Message::SIG_ALG_DSA_SHA256
	\|\| $_ == TLSProxy::Message::SIG_ALG_DSA_SHA384
	\|\| $_ == TLSProxy::Message::SIG_ALG_DSA_SHA512
	\|\| $_ == TLSProxy::Message::OSSL_SIG_ALG_DSA_SHA224
	\|\| $_ == TLSProxy::Message::SIG_ALG_RSA_PKCS1_SHA1
	\|\| $_ == TLSProxy::Message::SIG_ALG_DSA_SHA1
	\|\| $_ == TLSProxy::Message::SIG_ALG_ECDSA_SHA1) {
	$ok = 0;
	}
	}
	$sha1_status = $dsa_status = $sha224_status = 1 if ($ok);
	} elsif ($testtype == COMPAT_SIGALGS) {
	$ext = $message->extension_data->{TLSProxy::Message::EXT_SIG_ALGS};
	@algs = unpack('S>*', $ext);
	# unpack will unpack the length as well
	shift @algs;
	foreach (@algs) {
	if ($_ == TLSProxy::Message::SIG_ALG_DSA_SHA256
	\|\| $_ == TLSProxy::Message::SIG_ALG_DSA_SHA384
	\|\| $_ == TLSProxy::Message::SIG_ALG_DSA_SHA512) {
	$dsa_status = 1;
	}
	if ($_ == TLSProxy::Message::SIG_ALG_RSA_PKCS1_SHA1
	\|\| $_ == TLSProxy::Message::SIG_ALG_DSA_SHA1
	\|\| $_ == TLSProxy::Message::SIG_ALG_ECDSA_SHA1) {
	$sha1_status = 1;
	}
	if ($_ == TLSProxy::Message::OSSL_SIG_ALG_RSA_PKCS1_SHA224
	\|\| $_ == TLSProxy::Message::OSSL_SIG_ALG_DSA_SHA224
	\|\| $_ == TLSProxy::Message::OSSL_SIG_ALG_ECDSA_SHA224) {
	$sha224_status = 1;
	}
	}
	}
	}
	}
	}

	sub modify_sigalgs_cert_filter
	{
	my $proxy = shift;

	# We're only interested in the initial ClientHello
	if ($proxy->flight != 0) {
	return;
	}

	foreach my $message (@{$proxy->message_list}) {
	if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
	my $sigs;
	# two byte length at front of sigs, then two-byte sigschemes
	if ($testtype == SIGALGS_CERT_ALL) {
	$sigs = pack "C26", 0x00, 0x18,
	# rsa_pkcs_sha{256,512} rsa_pss_rsae_sha{256,512}
	0x04, 0x01, 0x06, 0x01, 0x08, 0x04, 0x08, 0x06,
	# ed25518 ed448 rsa_pss_pss_sha{256,512}
	0x08, 0x07, 0x08, 0x08, 0x08, 0x09, 0x08, 0x0b,
	# ecdsa_secp{256,512} rsa+sha1 ecdsa+sha1
	0x04, 0x03, 0x06, 0x03, 0x02, 0x01, 0x02, 0x03;
	} elsif ($testtype == SIGALGS_CERT_PKCS) {
	$sigs = pack "C10", 0x00, 0x08,
	# rsa_pkcs_sha{256,384,512,1}
	0x04, 0x01, 0x05, 0x01, 0x06, 0x01, 0x02, 0x01;
	} elsif ($testtype == SIGALGS_CERT_INVALID) {
	$sigs = pack "C4", 0x00, 0x02,
	# unregistered codepoint
	0xb2, 0x6f;
	}
	$message->set_extension(TLSProxy::Message::EXT_SIG_ALGS_CERT, $sigs);
	$message->repack();
	}
	}
	}

	sub modify_cert_verify_sigalg
	{
	my $proxy = shift;

	# We're only interested in the CertificateVerify
	if ($proxy->flight != 1) {
	return;
	}

	foreach my $message (@{$proxy->message_list}) {
	if ($message->mt == TLSProxy::Message::MT_CERTIFICATE_VERIFY) {
	$message->sigalg(TLSProxy::Message::SIG_ALG_RSA_PSS_PSS_SHA256);
	$message->repack();
	}
	}
	}

	sub inject_unrecognized_sigalg
	{
	my $proxy = shift;
	my $type;

	# We're only interested in the initial ClientHello
	if ($proxy->flight != 0) {
	return;
	}
	if ($testtype == UNRECOGNIZED_SIGALGS_CERT) {
	$type = TLSProxy::Message::EXT_SIG_ALGS_CERT;
	} elsif ($testtype == UNRECOGNIZED_SIGALG) {
	$type = TLSProxy::Message::EXT_SIG_ALGS;
	} else {
	return;
	}

	my $ext = pack "C8",
	0x00, 0x06, #Extension length
	0xfe, 0x18, #private use
	0x04, 0x01, #rsa_pkcs1_sha256
	0x08, 0x04; #rsa_pss_rsae_sha256;
	my $message = ${$proxy->message_list}[0];
	$message->set_extension($type, $ext);
	$message->repack;
	}