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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 "CTSerialization.h"
#include "CTTestUtils.h"
#include "gtest/gtest.h"
namespace mozilla {
namespace ct {
using namespace pkix;
class CTSerializationTest : public ::testing::Test {
public:
void SetUp() override {
mTestDigitallySigned = GetTestDigitallySigned();
mTestSignatureData = GetTestDigitallySignedData();
}
protected:
Buffer mTestDigitallySigned;
Buffer mTestSignatureData;
};
TEST_F(CTSerializationTest, DecodesDigitallySigned) {
Input digitallySigned = InputForBuffer(mTestDigitallySigned);
Reader digitallySignedReader(digitallySigned);
DigitallySigned parsed;
ASSERT_EQ(Success, DecodeDigitallySigned(digitallySignedReader, parsed));
EXPECT_TRUE(digitallySignedReader.AtEnd());
EXPECT_EQ(DigitallySigned::HashAlgorithm::SHA256, parsed.hashAlgorithm);
EXPECT_EQ(DigitallySigned::SignatureAlgorithm::ECDSA,
parsed.signatureAlgorithm);
EXPECT_EQ(mTestSignatureData, parsed.signatureData);
}
TEST_F(CTSerializationTest, FailsToDecodePartialDigitallySigned) {
Input partial;
ASSERT_EQ(Success, partial.Init(mTestDigitallySigned.data(),
mTestDigitallySigned.size() - 5));
Reader partialReader(partial);
DigitallySigned parsed;
EXPECT_NE(Success, DecodeDigitallySigned(partialReader, parsed));
}
TEST_F(CTSerializationTest, EncodesDigitallySigned) {
DigitallySigned digitallySigned;
digitallySigned.hashAlgorithm = DigitallySigned::HashAlgorithm::SHA256;
digitallySigned.signatureAlgorithm =
DigitallySigned::SignatureAlgorithm::ECDSA;
digitallySigned.signatureData = mTestSignatureData;
Buffer encoded;
ASSERT_EQ(Success, EncodeDigitallySigned(digitallySigned, encoded));
EXPECT_EQ(mTestDigitallySigned, encoded);
}
TEST_F(CTSerializationTest, EncodesLogEntryForX509Cert) {
LogEntry entry;
GetX509CertLogEntry(entry);
Buffer encoded;
ASSERT_EQ(Success, EncodeLogEntry(entry, encoded));
EXPECT_EQ((718U + 5U), encoded.size());
// First two bytes are log entry type. Next, length:
// Length is 718 which is 512 + 206, which is { 0, ..., 2, 206 }.
Buffer expectedPrefix = {0, 0, 0, 2, 206};
Buffer encodedPrefix;
encodedPrefix.assign(encoded.begin(), encoded.begin() + 5);
EXPECT_EQ(expectedPrefix, encodedPrefix);
}
TEST_F(CTSerializationTest, EncodesLogEntryForPrecert) {
LogEntry entry;
GetPrecertLogEntry(entry);
Buffer encoded;
ASSERT_EQ(Success, EncodeLogEntry(entry, encoded));
// log entry type + issuer key + length + tbsCertificate
EXPECT_EQ((2U + 32U + 3U + entry.tbsCertificate.size()), encoded.size());
// First two bytes are log entry type.
Buffer expectedPrefix = {0, 1};
Buffer encodedPrefix;
encodedPrefix.assign(encoded.begin(), encoded.begin() + 2);
EXPECT_EQ(expectedPrefix, encodedPrefix);
// Next is the issuer key (32 bytes).
Buffer encodedKeyHash;
encodedKeyHash.assign(encoded.begin() + 2, encoded.begin() + 2 + 32);
EXPECT_EQ(GetDefaultIssuerKeyHash(), encodedKeyHash);
}
TEST_F(CTSerializationTest, EncodesV1SCTSignedData) {
uint64_t timestamp = UINT64_C(0x139fe353cf5);
const uint8_t DUMMY_BYTES[] = {0x61, 0x62, 0x63}; // abc
Input dummyEntry(DUMMY_BYTES);
Input emptyExtensions;
Buffer encoded;
ASSERT_EQ(Success, EncodeV1SCTSignedData(timestamp, dummyEntry,
emptyExtensions, encoded));
EXPECT_EQ((size_t)15, encoded.size());
Buffer expectedBuffer = {
0x00, // version
0x00, // signature type
0x00, 0x00, 0x01, 0x39, 0xFE, 0x35, 0x3C, 0xF5, // timestamp
0x61, 0x62, 0x63, // log signature
0x00, 0x00 // extensions (empty)
};
EXPECT_EQ(expectedBuffer, encoded);
}
TEST_F(CTSerializationTest, DecodesSCTList) {
// Two items in the list: "abc", "def"
const uint8_t ENCODED[] = {0x00, 0x0a, 0x00, 0x03, 0x61, 0x62,
0x63, 0x00, 0x03, 0x64, 0x65, 0x66};
const uint8_t DECODED_1[] = {0x61, 0x62, 0x63};
const uint8_t DECODED_2[] = {0x64, 0x65, 0x66};
Reader listReader;
ASSERT_EQ(Success, DecodeSCTList(Input(ENCODED), listReader));
Input decoded1;
ASSERT_EQ(Success, ReadSCTListItem(listReader, decoded1));
Input decoded2;
ASSERT_EQ(Success, ReadSCTListItem(listReader, decoded2));
EXPECT_TRUE(listReader.AtEnd());
EXPECT_TRUE(InputsAreEqual(decoded1, Input(DECODED_1)));
EXPECT_TRUE(InputsAreEqual(decoded2, Input(DECODED_2)));
}
TEST_F(CTSerializationTest, FailsDecodingInvalidSCTList) {
// A list with one item that's too short (the second one)
const uint8_t ENCODED[] = {0x00, 0x0a, 0x00, 0x03, 0x61, 0x62,
0x63, 0x00, 0x05, 0x64, 0x65, 0x66};
Reader listReader;
ASSERT_EQ(Success, DecodeSCTList(Input(ENCODED), listReader));
Input decoded1;
EXPECT_EQ(Success, ReadSCTListItem(listReader, decoded1));
Input decoded2;
EXPECT_NE(Success, ReadSCTListItem(listReader, decoded2));
}
TEST_F(CTSerializationTest, EncodesSCTList) {
const uint8_t SCT_1[] = {0x61, 0x62, 0x63};
const uint8_t SCT_2[] = {0x64, 0x65, 0x66};
std::vector<Input> list;
list.push_back(Input(SCT_1));
list.push_back(Input(SCT_2));
Buffer encodedList;
ASSERT_EQ(Success, EncodeSCTList(list, encodedList));
Reader listReader;
ASSERT_EQ(Success, DecodeSCTList(InputForBuffer(encodedList), listReader));
Input decoded1;
ASSERT_EQ(Success, ReadSCTListItem(listReader, decoded1));
EXPECT_TRUE(InputsAreEqual(decoded1, Input(SCT_1)));
Input decoded2;
ASSERT_EQ(Success, ReadSCTListItem(listReader, decoded2));
EXPECT_TRUE(InputsAreEqual(decoded2, Input(SCT_2)));
EXPECT_TRUE(listReader.AtEnd());
}
TEST_F(CTSerializationTest, DecodesSignedCertificateTimestamp) {
Buffer encodedSctBuffer = GetTestSignedCertificateTimestamp();
Input encodedSctInput = InputForBuffer(encodedSctBuffer);
Reader encodedSctReader(encodedSctInput);
SignedCertificateTimestamp sct;
ASSERT_EQ(Success, DecodeSignedCertificateTimestamp(encodedSctReader, sct));
EXPECT_EQ(SignedCertificateTimestamp::Version::V1, sct.version);
EXPECT_EQ(GetTestPublicKeyId(), sct.logId);
const uint64_t expectedTime = 1365181456089;
EXPECT_EQ(expectedTime, sct.timestamp);
const size_t expectedSignatureLength = 71;
EXPECT_EQ(expectedSignatureLength, sct.signature.signatureData.size());
EXPECT_TRUE(sct.extensions.empty());
}
TEST_F(CTSerializationTest, FailsDecodingInvalidSignedCertificateTimestamp) {
SignedCertificateTimestamp sct;
// Invalid version
const uint8_t INVALID_VERSION_BYTES[] = {0x02, 0x00};
Input invalidVersionSctInput(INVALID_VERSION_BYTES);
Reader invalidVersionSctReader(invalidVersionSctInput);
EXPECT_EQ(pkix::Result::ERROR_BAD_DER,
DecodeSignedCertificateTimestamp(invalidVersionSctReader, sct));
// Valid version, invalid length (missing data)
const uint8_t INVALID_LENGTH_BYTES[] = {0x00, 0x0a, 0x0b, 0x0c};
Input invalidLengthSctInput(INVALID_LENGTH_BYTES);
Reader invalidLengthSctReader(invalidLengthSctInput);
EXPECT_EQ(pkix::Result::ERROR_BAD_DER,
DecodeSignedCertificateTimestamp(invalidLengthSctReader, sct));
}
} // namespace ct
} // namespace mozilla
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