271 lines
8.4 KiB
C++
271 lines
8.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "CTSerialization.h"
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#include "CTTestUtils.h"
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#include "gtest/gtest.h"
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#include "mozilla/Move.h"
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namespace mozilla { namespace ct {
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using namespace pkix;
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class CTSerializationTest : public ::testing::Test
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{
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public:
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void SetUp() override
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{
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mTestDigitallySigned = GetTestDigitallySigned();
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mTestSignatureData = GetTestDigitallySignedData();
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}
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protected:
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Buffer mTestDigitallySigned;
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Buffer mTestSignatureData;
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};
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TEST_F(CTSerializationTest, DecodesDigitallySigned)
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{
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Input digitallySigned = InputForBuffer(mTestDigitallySigned);
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Reader digitallySignedReader(digitallySigned);
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DigitallySigned parsed;
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ASSERT_EQ(Success,
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DecodeDigitallySigned(digitallySignedReader, parsed));
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EXPECT_TRUE(digitallySignedReader.AtEnd());
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EXPECT_EQ(DigitallySigned::HashAlgorithm::SHA256,
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parsed.hashAlgorithm);
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EXPECT_EQ(DigitallySigned::SignatureAlgorithm::ECDSA,
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parsed.signatureAlgorithm);
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EXPECT_EQ(mTestSignatureData, parsed.signatureData);
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}
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TEST_F(CTSerializationTest, FailsToDecodePartialDigitallySigned)
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{
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Input partial;
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ASSERT_EQ(Success,
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partial.Init(mTestDigitallySigned.begin(),
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mTestDigitallySigned.length() - 5));
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Reader partialReader(partial);
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DigitallySigned parsed;
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EXPECT_NE(Success, DecodeDigitallySigned(partialReader, parsed));
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}
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TEST_F(CTSerializationTest, EncodesDigitallySigned)
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{
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DigitallySigned digitallySigned;
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digitallySigned.hashAlgorithm =
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DigitallySigned::HashAlgorithm::SHA256;
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digitallySigned.signatureAlgorithm =
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DigitallySigned::SignatureAlgorithm::ECDSA;
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digitallySigned.signatureData = cloneBuffer(mTestSignatureData);
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Buffer encoded;
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ASSERT_EQ(Success, EncodeDigitallySigned(digitallySigned, encoded));
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EXPECT_EQ(mTestDigitallySigned, encoded);
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}
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TEST_F(CTSerializationTest, EncodesLogEntryForX509Cert)
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{
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LogEntry entry;
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GetX509CertLogEntry(entry);
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Buffer encoded;
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ASSERT_EQ(Success, EncodeLogEntry(entry, encoded));
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EXPECT_EQ((718U + 5U), encoded.length());
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// First two bytes are log entry type. Next, length:
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// Length is 718 which is 512 + 206, which is 0x2ce
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Buffer expectedPrefix;
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MOZ_RELEASE_ASSERT(expectedPrefix.append("\0\0\0\x2\xCE", 5));
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Buffer encodedPrefix;
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MOZ_RELEASE_ASSERT(encodedPrefix.
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append(encoded.begin(), encoded.begin() + 5));
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EXPECT_EQ(expectedPrefix, encodedPrefix);
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}
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TEST_F(CTSerializationTest, EncodesLogEntryForPrecert)
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{
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LogEntry entry;
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GetPrecertLogEntry(entry);
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Buffer encoded;
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ASSERT_EQ(Success, EncodeLogEntry(entry, encoded));
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// log entry type + issuer key + length + tbsCertificate
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EXPECT_EQ((2U + 32U + 3U + entry.tbsCertificate.length()), encoded.length());
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// First two bytes are log entry type.
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Buffer expectedPrefix;
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MOZ_RELEASE_ASSERT(expectedPrefix.append("\0\x1", 2));
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Buffer encodedPrefix;
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MOZ_RELEASE_ASSERT(encodedPrefix.
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append(encoded.begin(), encoded.begin() + 2));
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EXPECT_EQ(expectedPrefix, encodedPrefix);
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// Next is the issuer key (32 bytes).
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Buffer encodedKeyHash;
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MOZ_RELEASE_ASSERT(encodedKeyHash.
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append(encoded.begin() + 2, encoded.begin() + 2 + 32));
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EXPECT_EQ(GetDefaultIssuerKeyHash(), encodedKeyHash);
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}
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TEST_F(CTSerializationTest, EncodesV1SCTSignedData)
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{
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uint64_t timestamp = UINT64_C(0x139fe353cf5);
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const uint8_t DUMMY_BYTES[] = { 0x61, 0x62, 0x63 }; // abc
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Input dummyEntry(DUMMY_BYTES);
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Input emptyExtensions;
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Buffer encoded;
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ASSERT_EQ(Success, EncodeV1SCTSignedData(
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timestamp, dummyEntry, emptyExtensions, encoded));
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EXPECT_EQ((size_t) 15, encoded.length());
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const uint8_t EXPECTED_BYTES[] = {
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0x00, // version
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0x00, // signature type
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0x00, 0x00, 0x01, 0x39, 0xFE, 0x35, 0x3C, 0xF5, // timestamp
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0x61, 0x62, 0x63, // log signature
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0x00, 0x00 // extensions (empty)
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};
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Buffer expectedBuffer;
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MOZ_RELEASE_ASSERT(
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expectedBuffer.append(EXPECTED_BYTES, sizeof(EXPECTED_BYTES)));
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EXPECT_EQ(expectedBuffer, encoded);
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}
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TEST_F(CTSerializationTest, DecodesSCTList)
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{
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// Two items in the list: "abc", "def"
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const uint8_t ENCODED[] = {
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0x00, 0x0a, 0x00, 0x03, 0x61, 0x62, 0x63, 0x00, 0x03, 0x64, 0x65, 0x66
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};
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const uint8_t DECODED_1[] = { 0x61, 0x62, 0x63 };
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const uint8_t DECODED_2[] = { 0x64, 0x65, 0x66 };
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Reader listReader;
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ASSERT_EQ(Success, DecodeSCTList(Input(ENCODED), listReader));
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Input decoded1;
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ASSERT_EQ(Success, ReadSCTListItem(listReader, decoded1));
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Input decoded2;
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ASSERT_EQ(Success, ReadSCTListItem(listReader, decoded2));
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EXPECT_TRUE(listReader.AtEnd());
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EXPECT_TRUE(InputsAreEqual(decoded1, Input(DECODED_1)));
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EXPECT_TRUE(InputsAreEqual(decoded2, Input(DECODED_2)));
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}
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TEST_F(CTSerializationTest, FailsDecodingInvalidSCTList)
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{
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// A list with one item that's too short (the second one)
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const uint8_t ENCODED[] = {
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0x00, 0x0a, 0x00, 0x03, 0x61, 0x62, 0x63, 0x00, 0x05, 0x64, 0x65, 0x66
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};
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Reader listReader;
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ASSERT_EQ(Success, DecodeSCTList(Input(ENCODED), listReader));
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Input decoded1;
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EXPECT_EQ(Success, ReadSCTListItem(listReader, decoded1));
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Input decoded2;
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EXPECT_NE(Success, ReadSCTListItem(listReader, decoded2));
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}
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TEST_F(CTSerializationTest, EncodesSCTList)
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{
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const uint8_t SCT_1[] = { 0x61, 0x62, 0x63 };
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const uint8_t SCT_2[] = { 0x64, 0x65, 0x66 };
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Vector<Input> list;
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ASSERT_TRUE(list.append(Move(Input(SCT_1))));
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ASSERT_TRUE(list.append(Move(Input(SCT_2))));
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Buffer encodedList;
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ASSERT_EQ(Success, EncodeSCTList(list, encodedList));
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Reader listReader;
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ASSERT_EQ(Success, DecodeSCTList(InputForBuffer(encodedList), listReader));
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Input decoded1;
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ASSERT_EQ(Success, ReadSCTListItem(listReader, decoded1));
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EXPECT_TRUE(InputsAreEqual(decoded1, Input(SCT_1)));
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Input decoded2;
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ASSERT_EQ(Success, ReadSCTListItem(listReader, decoded2));
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EXPECT_TRUE(InputsAreEqual(decoded2, Input(SCT_2)));
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EXPECT_TRUE(listReader.AtEnd());
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}
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TEST_F(CTSerializationTest, DecodesSignedCertificateTimestamp)
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{
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Buffer encodedSctBuffer = GetTestSignedCertificateTimestamp();
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Input encodedSctInput = InputForBuffer(encodedSctBuffer);
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Reader encodedSctReader(encodedSctInput);
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SignedCertificateTimestamp sct;
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ASSERT_EQ(Success,
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DecodeSignedCertificateTimestamp(encodedSctReader, sct));
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EXPECT_EQ(SignedCertificateTimestamp::Version::V1, sct.version);
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EXPECT_EQ(GetTestPublicKeyId(), sct.logId);
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const uint64_t expectedTime = 1365181456089;
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EXPECT_EQ(expectedTime, sct.timestamp);
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const size_t expectedSignatureLength = 71;
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EXPECT_EQ(expectedSignatureLength, sct.signature.signatureData.length());
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EXPECT_TRUE(sct.extensions.empty());
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}
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TEST_F(CTSerializationTest, FailsDecodingInvalidSignedCertificateTimestamp)
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{
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SignedCertificateTimestamp sct;
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// Invalid version
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const uint8_t INVALID_VERSION_BYTES[] = { 0x02, 0x00 };
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Input invalidVersionSctInput(INVALID_VERSION_BYTES);
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Reader invalidVersionSctReader(invalidVersionSctInput);
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EXPECT_EQ(Result::ERROR_BAD_DER,
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DecodeSignedCertificateTimestamp(invalidVersionSctReader, sct));
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// Valid version, invalid length (missing data)
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const uint8_t INVALID_LENGTH_BYTES[] = { 0x00, 0x0a, 0x0b, 0x0c };
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Input invalidLengthSctInput(INVALID_LENGTH_BYTES);
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Reader invalidLengthSctReader(invalidLengthSctInput);
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EXPECT_EQ(Result::ERROR_BAD_DER,
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DecodeSignedCertificateTimestamp(invalidLengthSctReader, sct));
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}
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TEST_F(CTSerializationTest, EncodesValidSignedTreeHead)
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{
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SignedTreeHead signedTreeHead;
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GetSampleSignedTreeHead(signedTreeHead);
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Buffer encoded;
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ASSERT_EQ(Success,
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EncodeTreeHeadSignature(signedTreeHead, encoded));
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// Expected size is 50 bytes:
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// Byte 0 is version, byte 1 is signature type
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// Bytes 2-9 are timestamp
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// Bytes 10-17 are tree size
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// Bytes 18-49 are sha256 root hash
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ASSERT_EQ(50u, encoded.length());
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const uint8_t EXPECTED_BYTES_PREFIX[] = {
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0x00, // version
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0x01, // signature type
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0x00, 0x00, 0x01, 0x45, 0x3c, 0x5f, 0xb8, 0x35, // timestamp
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x15 // tree size
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// sha256 root hash should follow
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};
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Buffer expectedBuffer;
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MOZ_RELEASE_ASSERT(expectedBuffer.append(EXPECTED_BYTES_PREFIX, 18));
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Buffer hash = GetSampleSTHSHA256RootHash();
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MOZ_RELEASE_ASSERT(expectedBuffer.append(hash.begin(), hash.length()));
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EXPECT_EQ(expectedBuffer, encoded);
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}
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} } // namespace mozilla::ct
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