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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=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 "MultiLogCTVerifier.h"
#include <stdint.h>
#include "CTLogVerifier.h"
#include "CTObjectsExtractor.h"
#include "CTSerialization.h"
#include "CTTestUtils.h"
#include "gtest/gtest.h"
#include "nss.h"
namespace mozilla {
namespace ct {
using namespace mozilla::pkix;
class MultiLogCTVerifierTest : public ::testing::Test {
public:
MultiLogCTVerifierTest() : mNow(Time::uninitialized), mLogOperatorID(123) {}
void SetUp() override {
// Does nothing if NSS is already initialized.
if (NSS_NoDB_Init(nullptr) != SECSuccess) {
abort();
}
CTLogVerifier log;
ASSERT_EQ(Success,
log.Init(InputForBuffer(GetTestPublicKey()), mLogOperatorID,
CTLogStatus::Included, 0 /*disqualification time*/));
mVerifier.AddLog(std::move(log));
mTestCert = GetDEREncodedX509Cert();
mEmbeddedCert = GetDEREncodedTestEmbeddedCert();
mCaCert = GetDEREncodedCACert();
mCaCertSPKI = ExtractCertSPKI(mCaCert);
mIntermediateCert = GetDEREncodedIntermediateCert();
mIntermediateCertSPKI = ExtractCertSPKI(mIntermediateCert);
// Set the current time making sure all test timestamps are in the past.
mNow =
TimeFromEpochInSeconds(1451606400u); // Date.parse("2016-01-01")/1000
}
void CheckForSingleValidSCTInResult(const CTVerifyResult& result,
VerifiedSCT::Origin origin) {
EXPECT_EQ(0U, result.decodingErrors);
ASSERT_EQ(1U, result.verifiedScts.size());
EXPECT_EQ(VerifiedSCT::Status::Valid, result.verifiedScts[0].status);
EXPECT_EQ(origin, result.verifiedScts[0].origin);
EXPECT_EQ(mLogOperatorID, result.verifiedScts[0].logOperatorId);
}
// Writes an SCTList containing a single |sct| into |output|.
void EncodeSCTListForTesting(Input sct, Buffer& output) {
std::vector<Input> list;
list.push_back(std::move(sct));
ASSERT_EQ(Success, EncodeSCTList(list, output));
}
void GetSCTListWithInvalidLogID(Buffer& result) {
result.clear();
Buffer sct(GetTestSignedCertificateTimestamp());
// Change a byte inside the Log ID part of the SCT so it does
// not match the log used in the tests.
sct[15] ^= '\xFF';
EncodeSCTListForTesting(InputForBuffer(sct), result);
}
void CheckPrecertVerification(const Buffer& cert, const Buffer& issuerSPKI) {
Buffer sctList;
ExtractEmbeddedSCTList(cert, sctList);
ASSERT_FALSE(sctList.empty());
CTVerifyResult result;
ASSERT_EQ(Success,
mVerifier.Verify(InputForBuffer(cert), InputForBuffer(issuerSPKI),
InputForBuffer(sctList), Input(), Input(), mNow,
result));
CheckForSingleValidSCTInResult(result, VerifiedSCT::Origin::Embedded);
}
protected:
MultiLogCTVerifier mVerifier;
Buffer mTestCert;
Buffer mEmbeddedCert;
Buffer mCaCert;
Buffer mCaCertSPKI;
Buffer mIntermediateCert;
Buffer mIntermediateCertSPKI;
Time mNow;
CTLogOperatorId mLogOperatorID;
};
// Test that an embedded SCT can be extracted and the extracted SCT contains
// the expected data. This tests the ExtractEmbeddedSCTList function from
// CTTestUtils.h that other tests here rely upon.
TEST_F(MultiLogCTVerifierTest, ExtractEmbeddedSCT) {
SignedCertificateTimestamp sct;
// Extract the embedded SCT.
Buffer sctList;
ExtractEmbeddedSCTList(mEmbeddedCert, sctList);
ASSERT_FALSE(sctList.empty());
Reader sctReader;
ASSERT_EQ(Success, DecodeSCTList(InputForBuffer(sctList), sctReader));
Input sctItemInput;
ASSERT_EQ(Success, ReadSCTListItem(sctReader, sctItemInput));
EXPECT_TRUE(sctReader.AtEnd()); // we only expect one sct in the list
Reader sctItemReader(sctItemInput);
ASSERT_EQ(Success, DecodeSignedCertificateTimestamp(sctItemReader, sct));
// Make sure the SCT contains the expected data.
EXPECT_EQ(SignedCertificateTimestamp::Version::V1, sct.version);
EXPECT_EQ(GetTestPublicKeyId(), sct.logId);
uint64_t expectedTimestamp = 1365181456275;
EXPECT_EQ(expectedTimestamp, sct.timestamp);
}
TEST_F(MultiLogCTVerifierTest, VerifiesEmbeddedSCT) {
CheckPrecertVerification(mEmbeddedCert, mCaCertSPKI);
}
TEST_F(MultiLogCTVerifierTest, VerifiesEmbeddedSCTWithPreCA) {
CheckPrecertVerification(GetDEREncodedTestEmbeddedWithPreCACert(),
mCaCertSPKI);
}
TEST_F(MultiLogCTVerifierTest, VerifiesEmbeddedSCTWithIntermediate) {
CheckPrecertVerification(GetDEREncodedTestEmbeddedWithIntermediateCert(),
mIntermediateCertSPKI);
}
TEST_F(MultiLogCTVerifierTest, VerifiesEmbeddedSCTWithIntermediateAndPreCA) {
CheckPrecertVerification(GetDEREncodedTestEmbeddedWithIntermediatePreCACert(),
mIntermediateCertSPKI);
}
TEST_F(MultiLogCTVerifierTest, VerifiesSCTFromOCSP) {
Buffer sct(GetTestSignedCertificateTimestamp());
Buffer sctList;
EncodeSCTListForTesting(InputForBuffer(sct), sctList);
CTVerifyResult result;
ASSERT_EQ(Success,
mVerifier.Verify(InputForBuffer(mTestCert), Input(), Input(),
InputForBuffer(sctList), Input(), mNow, result));
CheckForSingleValidSCTInResult(result, VerifiedSCT::Origin::OCSPResponse);
}
TEST_F(MultiLogCTVerifierTest, VerifiesSCTFromTLS) {
Buffer sct(GetTestSignedCertificateTimestamp());
Buffer sctList;
EncodeSCTListForTesting(InputForBuffer(sct), sctList);
CTVerifyResult result;
ASSERT_EQ(Success,
mVerifier.Verify(InputForBuffer(mTestCert), Input(), Input(),
Input(), InputForBuffer(sctList), mNow, result));
CheckForSingleValidSCTInResult(result, VerifiedSCT::Origin::TLSExtension);
}
TEST_F(MultiLogCTVerifierTest, VerifiesSCTFromMultipleSources) {
Buffer sct(GetTestSignedCertificateTimestamp());
Buffer sctList;
EncodeSCTListForTesting(InputForBuffer(sct), sctList);
CTVerifyResult result;
ASSERT_EQ(Success, mVerifier.Verify(InputForBuffer(mTestCert), Input(),
Input(), InputForBuffer(sctList),
InputForBuffer(sctList), mNow, result));
// The result should contain verified SCTs from TLS and OCSP origins.
size_t embeddedCount = 0;
size_t tlsExtensionCount = 0;
size_t ocspResponseCount = 0;
for (const VerifiedSCT& verifiedSct : result.verifiedScts) {
EXPECT_EQ(VerifiedSCT::Status::Valid, verifiedSct.status);
switch (verifiedSct.origin) {
case VerifiedSCT::Origin::Embedded:
embeddedCount++;
break;
case VerifiedSCT::Origin::TLSExtension:
tlsExtensionCount++;
break;
case VerifiedSCT::Origin::OCSPResponse:
ocspResponseCount++;
break;
case VerifiedSCT::Origin::Unknown:
default:
ASSERT_TRUE(false);
}
}
EXPECT_EQ(embeddedCount, 0u);
EXPECT_TRUE(tlsExtensionCount > 0);
EXPECT_TRUE(ocspResponseCount > 0);
}
TEST_F(MultiLogCTVerifierTest, IdentifiesSCTFromUnknownLog) {
Buffer sctList;
GetSCTListWithInvalidLogID(sctList);
CTVerifyResult result;
ASSERT_EQ(Success,
mVerifier.Verify(InputForBuffer(mTestCert), Input(), Input(),
Input(), InputForBuffer(sctList), mNow, result));
EXPECT_EQ(0U, result.decodingErrors);
ASSERT_EQ(1U, result.verifiedScts.size());
EXPECT_EQ(VerifiedSCT::Status::UnknownLog, result.verifiedScts[0].status);
}
TEST_F(MultiLogCTVerifierTest, IdentifiesSCTFromDisqualifiedLog) {
MultiLogCTVerifier verifier;
CTLogVerifier log;
const uint64_t disqualificationTime = 12345u;
ASSERT_EQ(Success,
log.Init(InputForBuffer(GetTestPublicKey()), mLogOperatorID,
CTLogStatus::Disqualified, disqualificationTime));
verifier.AddLog(std::move(log));
Buffer sct(GetTestSignedCertificateTimestamp());
Buffer sctList;
EncodeSCTListForTesting(InputForBuffer(sct), sctList);
CTVerifyResult result;
ASSERT_EQ(Success,
verifier.Verify(InputForBuffer(mTestCert), Input(), Input(),
Input(), InputForBuffer(sctList), mNow, result));
EXPECT_EQ(0U, result.decodingErrors);
ASSERT_EQ(1U, result.verifiedScts.size());
EXPECT_EQ(VerifiedSCT::Status::ValidFromDisqualifiedLog,
result.verifiedScts[0].status);
EXPECT_EQ(disqualificationTime,
result.verifiedScts[0].logDisqualificationTime);
EXPECT_EQ(mLogOperatorID, result.verifiedScts[0].logOperatorId);
}
} // namespace ct
} // namespace mozilla
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