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- #! /usr/bin/env perl
- # Copyright 2016-2018 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
- };
- #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 => 22;
- 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", 8 if disabled("tls1_2") || disabled("ec");
- $proxy->filter(\&sigalgs_filter);
- #Test 10: Sending no sig algs extension in TLSv1.2 should succeed
- $proxy->clear();
- $testtype = NO_SIG_ALGS_EXT;
- $proxy->clientflags("-no_tls1_3");
- $proxy->ciphers("ECDHE-RSA-AES128-SHA");
- $proxy->start();
- ok(TLSProxy::Message->success, "No TLSv1.2 sigalgs");
- #Test 11: 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 12: 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 13: 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 14: 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 15: 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 16: 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 17: 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 18: 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 19: 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 20: 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 21: 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 22: 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");
- }
- 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();
- }
- }
- }
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