diff options
Diffstat (limited to 'nss/gtests/ssl_gtest/ssl_resumption_unittest.cc')
| -rw-r--r-- | nss/gtests/ssl_gtest/ssl_resumption_unittest.cc | 582 |
1 files changed, 582 insertions, 0 deletions
diff --git a/nss/gtests/ssl_gtest/ssl_resumption_unittest.cc b/nss/gtests/ssl_gtest/ssl_resumption_unittest.cc new file mode 100644 index 0000000..cfe42cb --- /dev/null +++ b/nss/gtests/ssl_gtest/ssl_resumption_unittest.cc @@ -0,0 +1,582 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=2 et sw=2 tw=80: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this file, + * You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include <functional> +#include <memory> +#include "secerr.h" +#include "ssl.h" +#include "sslerr.h" +#include "sslproto.h" + +extern "C" { +// This is not something that should make you happy. +#include "libssl_internals.h" +} + +#include "gtest_utils.h" +#include "scoped_ptrs.h" +#include "tls_connect.h" +#include "tls_filter.h" +#include "tls_parser.h" + +namespace nss_test { + +class TlsServerKeyExchangeEcdhe { + public: + bool Parse(const DataBuffer& buffer) { + TlsParser parser(buffer); + + uint8_t curve_type; + if (!parser.Read(&curve_type)) { + return false; + } + + if (curve_type != 3) { // named_curve + return false; + } + + uint32_t named_curve; + if (!parser.Read(&named_curve, 2)) { + return false; + } + + return parser.ReadVariable(&public_key_, 1); + } + + DataBuffer public_key_; +}; + +TEST_P(TlsConnectGenericPre13, ConnectResumed) { + ConfigureSessionCache(RESUME_SESSIONID, RESUME_SESSIONID); + Connect(); + + Reset(); + ExpectResumption(RESUME_SESSIONID); + Connect(); +} + +TEST_P(TlsConnectGeneric, ConnectClientCacheDisabled) { + ConfigureSessionCache(RESUME_NONE, RESUME_SESSIONID); + Connect(); + SendReceive(); + + Reset(); + ExpectResumption(RESUME_NONE); + Connect(); + SendReceive(); +} + +TEST_P(TlsConnectGeneric, ConnectServerCacheDisabled) { + ConfigureSessionCache(RESUME_SESSIONID, RESUME_NONE); + Connect(); + SendReceive(); + + Reset(); + ExpectResumption(RESUME_NONE); + Connect(); + SendReceive(); +} + +TEST_P(TlsConnectGeneric, ConnectSessionCacheDisabled) { + ConfigureSessionCache(RESUME_NONE, RESUME_NONE); + Connect(); + SendReceive(); + + Reset(); + ExpectResumption(RESUME_NONE); + Connect(); + SendReceive(); +} + +TEST_P(TlsConnectGeneric, ConnectResumeSupportBoth) { + // This prefers tickets. + ConfigureSessionCache(RESUME_BOTH, RESUME_BOTH); + Connect(); + SendReceive(); + + Reset(); + ConfigureSessionCache(RESUME_BOTH, RESUME_BOTH); + ExpectResumption(RESUME_TICKET); + Connect(); + SendReceive(); +} + +TEST_P(TlsConnectGeneric, ConnectResumeClientTicketServerBoth) { + // This causes no resumption because the client needs the + // session cache to resume even with tickets. + ConfigureSessionCache(RESUME_TICKET, RESUME_BOTH); + Connect(); + SendReceive(); + + Reset(); + ConfigureSessionCache(RESUME_TICKET, RESUME_BOTH); + ExpectResumption(RESUME_NONE); + Connect(); + SendReceive(); +} + +TEST_P(TlsConnectGeneric, ConnectResumeClientBothTicketServerTicket) { + // This causes a ticket resumption. + ConfigureSessionCache(RESUME_BOTH, RESUME_TICKET); + Connect(); + SendReceive(); + + Reset(); + ConfigureSessionCache(RESUME_BOTH, RESUME_TICKET); + ExpectResumption(RESUME_TICKET); + Connect(); + SendReceive(); +} + +TEST_P(TlsConnectGeneric, ConnectResumeClientServerTicketOnly) { + // This causes no resumption because the client needs the + // session cache to resume even with tickets. + ConfigureSessionCache(RESUME_TICKET, RESUME_TICKET); + Connect(); + SendReceive(); + + Reset(); + ConfigureSessionCache(RESUME_TICKET, RESUME_TICKET); + ExpectResumption(RESUME_NONE); + Connect(); + SendReceive(); +} + +TEST_P(TlsConnectGeneric, ConnectResumeClientBothServerNone) { + ConfigureSessionCache(RESUME_BOTH, RESUME_NONE); + Connect(); + SendReceive(); + + Reset(); + ConfigureSessionCache(RESUME_BOTH, RESUME_NONE); + ExpectResumption(RESUME_NONE); + Connect(); + SendReceive(); +} + +TEST_P(TlsConnectGeneric, ConnectResumeClientNoneServerBoth) { + ConfigureSessionCache(RESUME_NONE, RESUME_BOTH); + Connect(); + SendReceive(); + + Reset(); + ConfigureSessionCache(RESUME_NONE, RESUME_BOTH); + ExpectResumption(RESUME_NONE); + Connect(); + SendReceive(); +} + +TEST_P(TlsConnectGenericPre13, ConnectResumeWithHigherVersion) { + ConfigureSessionCache(RESUME_SESSIONID, RESUME_SESSIONID); + ConfigureVersion(SSL_LIBRARY_VERSION_TLS_1_1); + SetExpectedVersion(SSL_LIBRARY_VERSION_TLS_1_1); + Connect(); + + Reset(); + EnsureTlsSetup(); + SetExpectedVersion(SSL_LIBRARY_VERSION_TLS_1_2); + client_->SetVersionRange(SSL_LIBRARY_VERSION_TLS_1_1, + SSL_LIBRARY_VERSION_TLS_1_2); + server_->SetVersionRange(SSL_LIBRARY_VERSION_TLS_1_1, + SSL_LIBRARY_VERSION_TLS_1_2); + ExpectResumption(RESUME_NONE); + Connect(); +} + +TEST_P(TlsConnectGeneric, ConnectResumeClientBothTicketServerTicketForget) { + // This causes a ticket resumption. + ConfigureSessionCache(RESUME_BOTH, RESUME_TICKET); + Connect(); + SendReceive(); + + Reset(); + ClearServerCache(); + ConfigureSessionCache(RESUME_BOTH, RESUME_TICKET); + ExpectResumption(RESUME_NONE); + Connect(); + SendReceive(); +} + +// This callback switches out the "server" cert used on the server with +// the "client" certificate, which should be the same type. +static int32_t SwitchCertificates(TlsAgent* agent, const SECItem* srvNameArr, + uint32_t srvNameArrSize) { + bool ok = agent->ConfigServerCert("client"); + if (!ok) return SSL_SNI_SEND_ALERT; + + return 0; // first config +}; + +TEST_P(TlsConnectGeneric, ServerSNICertSwitch) { + Connect(); + ScopedCERTCertificate cert1(SSL_PeerCertificate(client_->ssl_fd())); + + Reset(); + ConfigureSessionCache(RESUME_NONE, RESUME_NONE); + + server_->SetSniCallback(SwitchCertificates); + + Connect(); + ScopedCERTCertificate cert2(SSL_PeerCertificate(client_->ssl_fd())); + CheckKeys(); + EXPECT_FALSE(SECITEM_ItemsAreEqual(&cert1->derCert, &cert2->derCert)); +} + +TEST_P(TlsConnectGeneric, ServerSNICertTypeSwitch) { + Reset(TlsAgent::kServerEcdsa256); + Connect(); + ScopedCERTCertificate cert1(SSL_PeerCertificate(client_->ssl_fd())); + + Reset(); + ConfigureSessionCache(RESUME_NONE, RESUME_NONE); + + // Because we configure an RSA certificate here, it only adds a second, unused + // certificate, which has no effect on what the server uses. + server_->SetSniCallback(SwitchCertificates); + + Connect(); + ScopedCERTCertificate cert2(SSL_PeerCertificate(client_->ssl_fd())); + CheckKeys(ssl_kea_ecdh, ssl_auth_ecdsa); + EXPECT_TRUE(SECITEM_ItemsAreEqual(&cert1->derCert, &cert2->derCert)); +} + +// Prior to TLS 1.3, we were not fully ephemeral; though 1.3 fixes that +TEST_P(TlsConnectGenericPre13, ConnectEcdheTwiceReuseKey) { + TlsInspectorRecordHandshakeMessage* i1 = + new TlsInspectorRecordHandshakeMessage(kTlsHandshakeServerKeyExchange); + server_->SetPacketFilter(i1); + Connect(); + CheckKeys(); + TlsServerKeyExchangeEcdhe dhe1; + EXPECT_TRUE(dhe1.Parse(i1->buffer())); + + // Restart + Reset(); + TlsInspectorRecordHandshakeMessage* i2 = + new TlsInspectorRecordHandshakeMessage(kTlsHandshakeServerKeyExchange); + server_->SetPacketFilter(i2); + ConfigureSessionCache(RESUME_NONE, RESUME_NONE); + Connect(); + CheckKeys(); + + TlsServerKeyExchangeEcdhe dhe2; + EXPECT_TRUE(dhe2.Parse(i2->buffer())); + + // Make sure they are the same. + EXPECT_EQ(dhe1.public_key_.len(), dhe2.public_key_.len()); + EXPECT_TRUE(!memcmp(dhe1.public_key_.data(), dhe2.public_key_.data(), + dhe1.public_key_.len())); +} + +// This test parses the ServerKeyExchange, which isn't in 1.3 +TEST_P(TlsConnectGenericPre13, ConnectEcdheTwiceNewKey) { + server_->EnsureTlsSetup(); + SECStatus rv = + SSL_OptionSet(server_->ssl_fd(), SSL_REUSE_SERVER_ECDHE_KEY, PR_FALSE); + EXPECT_EQ(SECSuccess, rv); + TlsInspectorRecordHandshakeMessage* i1 = + new TlsInspectorRecordHandshakeMessage(kTlsHandshakeServerKeyExchange); + server_->SetPacketFilter(i1); + Connect(); + CheckKeys(); + TlsServerKeyExchangeEcdhe dhe1; + EXPECT_TRUE(dhe1.Parse(i1->buffer())); + + // Restart + Reset(); + server_->EnsureTlsSetup(); + rv = SSL_OptionSet(server_->ssl_fd(), SSL_REUSE_SERVER_ECDHE_KEY, PR_FALSE); + EXPECT_EQ(SECSuccess, rv); + TlsInspectorRecordHandshakeMessage* i2 = + new TlsInspectorRecordHandshakeMessage(kTlsHandshakeServerKeyExchange); + server_->SetPacketFilter(i2); + ConfigureSessionCache(RESUME_NONE, RESUME_NONE); + Connect(); + CheckKeys(); + + TlsServerKeyExchangeEcdhe dhe2; + EXPECT_TRUE(dhe2.Parse(i2->buffer())); + + // Make sure they are different. + EXPECT_FALSE((dhe1.public_key_.len() == dhe2.public_key_.len()) && + (!memcmp(dhe1.public_key_.data(), dhe2.public_key_.data(), + dhe1.public_key_.len()))); +} + +// Verify that TLS 1.3 reports an accurate group on resumption. +TEST_P(TlsConnectTls13, TestTls13ResumeDifferentGroup) { + ConfigureSessionCache(RESUME_BOTH, RESUME_TICKET); + Connect(); + SendReceive(); // Need to read so that we absorb the session ticket. + CheckKeys(); + + Reset(); + ConfigureSessionCache(RESUME_BOTH, RESUME_TICKET); + ExpectResumption(RESUME_TICKET); + client_->ConfigNamedGroups(kFFDHEGroups); + server_->ConfigNamedGroups(kFFDHEGroups); + Connect(); + CheckKeys(ssl_kea_dh, ssl_grp_ffdhe_2048, ssl_auth_rsa_sign, ssl_sig_none); +} + +// We need to enable different cipher suites at different times in the following +// tests. Those cipher suites need to be suited to the version. +static uint16_t ChooseOneCipher(uint16_t version) { + if (version >= SSL_LIBRARY_VERSION_TLS_1_3) { + return TLS_AES_128_GCM_SHA256; + } + return TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA; +} + +static uint16_t ChooseAnotherCipher(uint16_t version) { + if (version >= SSL_LIBRARY_VERSION_TLS_1_3) { + return TLS_AES_256_GCM_SHA384; + } + return TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA; +} + +// Test that we don't resume when we can't negotiate the same cipher. +TEST_P(TlsConnectGeneric, TestResumeClientDifferentCipher) { + ConfigureSessionCache(RESUME_BOTH, RESUME_TICKET); + client_->EnableSingleCipher(ChooseOneCipher(version_)); + Connect(); + SendReceive(); + CheckKeys(ssl_kea_ecdh, ssl_auth_rsa_sign); + + Reset(); + ConfigureSessionCache(RESUME_BOTH, RESUME_TICKET); + ExpectResumption(RESUME_NONE); + client_->EnableSingleCipher(ChooseAnotherCipher(version_)); + uint16_t ticket_extension; + if (version_ >= SSL_LIBRARY_VERSION_TLS_1_3) { + ticket_extension = ssl_tls13_pre_shared_key_xtn; + } else { + ticket_extension = ssl_session_ticket_xtn; + } + auto ticket_capture = new TlsExtensionCapture(ticket_extension); + client_->SetPacketFilter(ticket_capture); + Connect(); + CheckKeys(ssl_kea_ecdh, ssl_auth_rsa_sign); + EXPECT_EQ(0U, ticket_capture->extension().len()); +} + +// Test that we don't resume when we can't negotiate the same cipher. +TEST_P(TlsConnectGeneric, TestResumeServerDifferentCipher) { + ConfigureSessionCache(RESUME_BOTH, RESUME_TICKET); + server_->EnableSingleCipher(ChooseOneCipher(version_)); + Connect(); + SendReceive(); // Need to read so that we absorb the session ticket. + CheckKeys(); + + Reset(); + ConfigureSessionCache(RESUME_BOTH, RESUME_TICKET); + ExpectResumption(RESUME_NONE); + server_->EnableSingleCipher(ChooseAnotherCipher(version_)); + Connect(); + CheckKeys(); +} + +class SelectedCipherSuiteReplacer : public TlsHandshakeFilter { + public: + SelectedCipherSuiteReplacer(uint16_t suite) : cipher_suite_(suite) {} + + protected: + PacketFilter::Action FilterHandshake(const HandshakeHeader& header, + const DataBuffer& input, + DataBuffer* output) override { + if (header.handshake_type() != kTlsHandshakeServerHello) { + return KEEP; + } + + *output = input; + uint32_t temp = 0; + EXPECT_TRUE(input.Read(0, 2, &temp)); + // Cipher suite is after version(2) and random(32). + size_t pos = 34; + if (temp < SSL_LIBRARY_VERSION_TLS_1_3) { + // In old versions, we have to skip a session_id too. + EXPECT_TRUE(input.Read(pos, 1, &temp)); + pos += 1 + temp; + } + output->Write(pos, static_cast<uint32_t>(cipher_suite_), 2); + return CHANGE; + } + + private: + uint16_t cipher_suite_; +}; + +// Test that the client doesn't tolerate the server picking a different cipher +// suite for resumption. +TEST_P(TlsConnectStream, TestResumptionOverrideCipher) { + ConfigureSessionCache(RESUME_BOTH, RESUME_TICKET); + server_->EnableSingleCipher(ChooseOneCipher(version_)); + Connect(); + SendReceive(); + CheckKeys(ssl_kea_ecdh, ssl_auth_rsa_sign); + + Reset(); + ConfigureSessionCache(RESUME_BOTH, RESUME_TICKET); + server_->SetPacketFilter( + new SelectedCipherSuiteReplacer(ChooseAnotherCipher(version_))); + + ConnectExpectFail(); + client_->CheckErrorCode(SSL_ERROR_RX_MALFORMED_SERVER_HELLO); + if (version_ >= SSL_LIBRARY_VERSION_TLS_1_3) { + // The reason this test is stream only: the server is unable to decrypt + // the alert that the client sends, see bug 1304603. + server_->CheckErrorCode(SSL_ERROR_BAD_MAC_READ); + } else { + server_->CheckErrorCode(SSL_ERROR_HANDSHAKE_FAILURE_ALERT); + } +} + +class SelectedVersionReplacer : public TlsHandshakeFilter { + public: + SelectedVersionReplacer(uint16_t version) : version_(version) {} + + protected: + PacketFilter::Action FilterHandshake(const HandshakeHeader& header, + const DataBuffer& input, + DataBuffer* output) override { + if (header.handshake_type() != kTlsHandshakeServerHello) { + return KEEP; + } + + *output = input; + output->Write(0, static_cast<uint32_t>(version_), 2); + return CHANGE; + } + + private: + uint16_t version_; +}; + +// Test how the client handles the case where the server picks a +// lower version number on resumption. +TEST_P(TlsConnectGenericPre13, TestResumptionOverrideVersion) { + uint16_t override_version = 0; + if (mode_ == STREAM) { + switch (version_) { + case SSL_LIBRARY_VERSION_TLS_1_0: + return; // Skip the test. + case SSL_LIBRARY_VERSION_TLS_1_1: + override_version = SSL_LIBRARY_VERSION_TLS_1_0; + break; + case SSL_LIBRARY_VERSION_TLS_1_2: + override_version = SSL_LIBRARY_VERSION_TLS_1_1; + break; + default: + ASSERT_TRUE(false) << "unknown version"; + } + } else { + if (version_ == SSL_LIBRARY_VERSION_TLS_1_2) { + override_version = SSL_LIBRARY_VERSION_DTLS_1_0_WIRE; + } else { + ASSERT_EQ(SSL_LIBRARY_VERSION_TLS_1_1, version_); + return; // Skip the test. + } + } + + ConfigureSessionCache(RESUME_BOTH, RESUME_TICKET); + // Need to use a cipher that is plausible for the lower version. + server_->EnableSingleCipher(TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA); + Connect(); + CheckKeys(ssl_kea_ecdh, ssl_auth_rsa_sign); + + Reset(); + ConfigureSessionCache(RESUME_BOTH, RESUME_TICKET); + // Enable the lower version on the client. + client_->SetVersionRange(version_ - 1, version_); + server_->EnableSingleCipher(TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA); + server_->SetPacketFilter(new SelectedVersionReplacer(override_version)); + + ConnectExpectFail(); + client_->CheckErrorCode(SSL_ERROR_RX_MALFORMED_SERVER_HELLO); + server_->CheckErrorCode(SSL_ERROR_HANDSHAKE_FAILURE_ALERT); +} + +// Test that two TLS resumptions work and produce the same ticket. +// This will change after bug 1257047 is fixed. +TEST_F(TlsConnectTest, TestTls13ResumptionTwice) { + ConfigureSessionCache(RESUME_BOTH, RESUME_TICKET); + ConfigureVersion(SSL_LIBRARY_VERSION_TLS_1_3); + + Connect(); + SendReceive(); // Need to read so that we absorb the session ticket. + CheckKeys(); + uint16_t original_suite; + EXPECT_TRUE(client_->cipher_suite(&original_suite)); + + Reset(); + ConfigureSessionCache(RESUME_BOTH, RESUME_TICKET); + ConfigureVersion(SSL_LIBRARY_VERSION_TLS_1_3); + ExpectResumption(RESUME_TICKET); + TlsExtensionCapture* c1 = + new TlsExtensionCapture(ssl_tls13_pre_shared_key_xtn); + client_->SetPacketFilter(c1); + Connect(); + SendReceive(); + CheckKeys(ssl_kea_ecdh, ssl_grp_ec_curve25519, ssl_auth_rsa_sign, + ssl_sig_none); + // The filter will go away when we reset, so save the captured extension. + DataBuffer initialTicket(c1->extension()); + ASSERT_LT(0U, initialTicket.len()); + + ScopedCERTCertificate cert1(SSL_PeerCertificate(client_->ssl_fd())); + ASSERT_TRUE(!!cert1.get()); + + Reset(); + ClearStats(); + ConfigureSessionCache(RESUME_BOTH, RESUME_TICKET); + ConfigureVersion(SSL_LIBRARY_VERSION_TLS_1_3); + TlsExtensionCapture* c2 = + new TlsExtensionCapture(ssl_tls13_pre_shared_key_xtn); + client_->SetPacketFilter(c2); + ExpectResumption(RESUME_TICKET); + Connect(); + SendReceive(); + CheckKeys(ssl_kea_ecdh, ssl_grp_ec_curve25519, ssl_auth_rsa_sign, + ssl_sig_none); + ASSERT_LT(0U, c2->extension().len()); + + ScopedCERTCertificate cert2(SSL_PeerCertificate(client_->ssl_fd())); + ASSERT_TRUE(!!cert2.get()); + + // Check that the cipher suite is reported the same on both sides, though in + // TLS 1.3 resumption actually negotiates a different cipher suite. + uint16_t resumed_suite; + EXPECT_TRUE(server_->cipher_suite(&resumed_suite)); + EXPECT_EQ(original_suite, resumed_suite); + EXPECT_TRUE(client_->cipher_suite(&resumed_suite)); + EXPECT_EQ(original_suite, resumed_suite); + + ASSERT_NE(initialTicket, c2->extension()); +} + +// Check that resumption works after receiving two NST messages. +TEST_F(TlsConnectTest, TestTls13ResumptionDuplicateNST) { + ConfigureSessionCache(RESUME_BOTH, RESUME_TICKET); + ConfigureVersion(SSL_LIBRARY_VERSION_TLS_1_3); + Connect(); + + // Clear the session ticket keys to invalidate the old ticket. + SSLInt_ClearSessionTicketKey(); + SSLInt_SendNewSessionTicket(server_->ssl_fd()); + + SendReceive(); // Need to read so that we absorb the session tickets. + CheckKeys(); + + // Resume the connection. + Reset(); + ConfigureSessionCache(RESUME_BOTH, RESUME_TICKET); + ConfigureVersion(SSL_LIBRARY_VERSION_TLS_1_3); + ExpectResumption(RESUME_TICKET); + Connect(); + SendReceive(); +} + +} // namespace nss_test |