Added test cases for CryCipher

This commit is contained in:
Sebastian Messmer 2015-10-19 14:22:01 +02:00
parent fdc41ffb83
commit d8e0465954
7 changed files with 147 additions and 5 deletions

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@ -1,6 +1,7 @@
# Biicode configuration file
[requirements]
google/gmock: 4
google/gtest: 11
messmer/blobstore: 1
messmer/blockstore: 2

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@ -45,7 +45,7 @@ private:
optional<string> _warning;
};
const string INTEGRITY_WARNING = "This cipher does not ensure integrity.";
const string CryCiphers::INTEGRITY_WARNING = "This cipher does not ensure integrity.";
//We have to use shared_ptr instead of unique_ref, because c++ initializer_list needs copyable values
const vector<shared_ptr<CryCipher>> CryCiphers::SUPPORTED_CIPHERS = {

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@ -26,6 +26,8 @@ public:
static const CryCipher& find(const std::string &cipherName);
private:
static const std::string INTEGRITY_WARNING;
static const std::vector<std::shared_ptr<CryCipher>> SUPPORTED_CIPHERS;
};

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@ -11,6 +11,9 @@ namespace bf = boost::filesystem;
namespace cryfs {
CryConfigFile CryConfigFile::create(const bf::path &path, CryConfig config) {
if (bf::exists(path)) {
throw std::runtime_error("Config file exists already.");
}
return CryConfigFile(path, std::move(config));
}

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@ -0,0 +1,136 @@
#include <google/gtest/gtest.h>
#include <google/gmock/gmock.h>
#include "../../src/config/CryCipher.h"
#include <messmer/blockstore/implementations/encrypted/ciphers/ciphers.h>
#include <messmer/cpp-utils/pointer/unique_ref_boost_optional_gtest_workaround.h>
#include <messmer/blockstore/implementations/testfake/FakeBlockStore.h>
#include <messmer/blockstore/implementations/encrypted/EncryptedBlockStore.h>
#include <messmer/cpp-utils/data/DataFixture.h>
using namespace cryfs;
using namespace blockstore::encrypted;
using namespace blockstore::testfake;
using namespace blockstore;
using std::initializer_list;
using std::string;
using std::vector;
using std::find;
using boost::none;
using testing::MatchesRegex;
using cpputils::DataFixture;
using cpputils::Data;
using cpputils::unique_ref;
using cpputils::make_unique_ref;
class CryCipherTest : public ::testing::Test {
public:
void EXPECT_FINDS_CORRECT_CIPHERS(initializer_list<string> ciphers) {
for (const string & cipher : ciphers) {
EXPECT_FINDS_CORRECT_CIPHER(cipher);
}
}
void EXPECT_FINDS_CORRECT_CIPHER(const string &cipherName) {
EXPECT_EQ(cipherName, CryCiphers::find(cipherName).cipherName());
}
template<class ExpectedCipher>
void EXPECT_CREATES_CORRECT_ENCRYPTED_BLOCKSTORE(const string &cipherName) {
const auto &actualCipher = CryCiphers::find(cipherName);
Data dataFixture = DataFixture::generate(1024);
string encKey = ExpectedCipher::EncryptionKey::CreatePseudoRandom().ToString();
_EXPECT_ENCRYPTS_WITH_ACTUAL_BLOCKSTORE_DECRYPTS_CORRECTLY_WITH_EXPECTED_BLOCKSTORE<ExpectedCipher>(actualCipher, encKey, std::move(dataFixture));
}
template<class ExpectedCipher>
void _EXPECT_ENCRYPTS_WITH_ACTUAL_BLOCKSTORE_DECRYPTS_CORRECTLY_WITH_EXPECTED_BLOCKSTORE(const CryCipher &actualCipher, const std::string &encKey, Data dataFixture) {
blockstore::Key key = blockstore::Key::CreatePseudoRandom();
Data encrypted = _encryptUsingEncryptedBlockStoreWithCipher(actualCipher, encKey, key, dataFixture.copy());
Data decrypted = _decryptUsingEncryptedBlockStoreWithCipher<ExpectedCipher>(encKey, key, std::move(encrypted));
EXPECT_EQ(dataFixture, decrypted);
}
Data _encryptUsingEncryptedBlockStoreWithCipher(const CryCipher &cipher, const std::string &encKey, const blockstore::Key &key, Data data) {
unique_ref<FakeBlockStore> _baseStore = make_unique_ref<FakeBlockStore>();
FakeBlockStore *baseStore = _baseStore.get();
unique_ref<BlockStore> encryptedStore = cipher.createEncryptedBlockstore(std::move(_baseStore), encKey);
auto created = encryptedStore->tryCreate(key, std::move(data));
EXPECT_NE(none, created);
return _loadBlock(baseStore, key);
}
template<class Cipher>
Data _decryptUsingEncryptedBlockStoreWithCipher(const std::string &encKey, const blockstore::Key &key, Data data) {
unique_ref<FakeBlockStore> baseStore = make_unique_ref<FakeBlockStore>();
auto created = baseStore->tryCreate(key, std::move(data));
EXPECT_NE(none, created);
EncryptedBlockStore<Cipher> encryptedStore(std::move(baseStore), Cipher::EncryptionKey::FromString(encKey));
return _loadBlock(&encryptedStore, key);
}
Data _loadBlock(BlockStore *store, const blockstore::Key &key) {
auto block = store->load(key).value();
Data data(block->size());
std::memcpy(data.data(), block->data(), block->size());
return data;
}
};
TEST_F(CryCipherTest, FindsCorrectCipher) {
EXPECT_FINDS_CORRECT_CIPHERS({
"aes-256-gcm", "aes-256-cfb", "aes-256-gcm", "aes-256-cfb",
"twofish-256-gcm", "twofish-256-cfb", "twofish-256-gcm", "twofish-256-cfb",
"serpent-256-gcm", "serpent-256-cfb", "serpent-256-gcm", "serpent-256-cfb",
"cast-256-gcm", "cast-256-cfb",
"mars-448-gcm", "mars-448-cfb", "mars-256-gcm", "mars-256-cfb", "mars-256-gcm", "mars-256-cfb"
});
}
TEST_F(CryCipherTest, CreatesCorrectEncryptedBlockStore) {
EXPECT_CREATES_CORRECT_ENCRYPTED_BLOCKSTORE<AES256_GCM>("aes-256-gcm");
EXPECT_CREATES_CORRECT_ENCRYPTED_BLOCKSTORE<AES256_CFB>("aes-256-cfb");
EXPECT_CREATES_CORRECT_ENCRYPTED_BLOCKSTORE<AES128_GCM>("aes-128-gcm");
EXPECT_CREATES_CORRECT_ENCRYPTED_BLOCKSTORE<AES128_CFB>("aes-128-cfb");
EXPECT_CREATES_CORRECT_ENCRYPTED_BLOCKSTORE<Twofish256_GCM>("twofish-256-gcm");
EXPECT_CREATES_CORRECT_ENCRYPTED_BLOCKSTORE<Twofish256_CFB>("twofish-256-cfb");
EXPECT_CREATES_CORRECT_ENCRYPTED_BLOCKSTORE<Twofish128_GCM>("twofish-128-gcm");
EXPECT_CREATES_CORRECT_ENCRYPTED_BLOCKSTORE<Twofish128_CFB>("twofish-128-cfb");
EXPECT_CREATES_CORRECT_ENCRYPTED_BLOCKSTORE<Serpent256_GCM>("serpent-256-gcm");
EXPECT_CREATES_CORRECT_ENCRYPTED_BLOCKSTORE<Serpent256_CFB>("serpent-256-cfb");
EXPECT_CREATES_CORRECT_ENCRYPTED_BLOCKSTORE<Serpent128_GCM>("serpent-128-gcm");
EXPECT_CREATES_CORRECT_ENCRYPTED_BLOCKSTORE<Serpent128_CFB>("serpent-128-cfb");
EXPECT_CREATES_CORRECT_ENCRYPTED_BLOCKSTORE<Cast256_GCM>("cast-256-gcm");
EXPECT_CREATES_CORRECT_ENCRYPTED_BLOCKSTORE<Cast256_CFB>("cast-256-cfb");
EXPECT_CREATES_CORRECT_ENCRYPTED_BLOCKSTORE<Mars448_GCM>("mars-448-gcm");
EXPECT_CREATES_CORRECT_ENCRYPTED_BLOCKSTORE<Mars448_CFB>("mars-448-cfb");
EXPECT_CREATES_CORRECT_ENCRYPTED_BLOCKSTORE<Mars256_GCM>("mars-256-gcm");
EXPECT_CREATES_CORRECT_ENCRYPTED_BLOCKSTORE<Mars256_CFB>("mars-256-cfb");
EXPECT_CREATES_CORRECT_ENCRYPTED_BLOCKSTORE<Mars128_GCM>("mars-128-gcm");
EXPECT_CREATES_CORRECT_ENCRYPTED_BLOCKSTORE<Mars128_CFB>("mars-128-cfb");
}
TEST_F(CryCipherTest, SupportedCipherNamesContainsACipher) {
vector<string> supportedCipherNames = CryCiphers::supportedCipherNames();
EXPECT_NE(supportedCipherNames.end(), find(supportedCipherNames.begin(), supportedCipherNames.end(), "aes-256-gcm"));
}
TEST_F(CryCipherTest, ThereIsACipherWithoutWarning) {
EXPECT_EQ(none, CryCiphers::find("aes-256-gcm").warning());
}
TEST_F(CryCipherTest, ThereIsACipherWithIntegrityWarning) {
EXPECT_THAT(CryCiphers::find("aes-256-cfb").warning().get(), MatchesRegex(".*integrity.*"));
}
TEST_F(CryCipherTest, EncryptionKeyHasCorrectSize_448) {
EXPECT_EQ(Mars448_GCM::EncryptionKey::STRING_LENGTH, CryCiphers::find("mars-448-gcm").createKey().size());
}
TEST_F(CryCipherTest, EncryptionKeyHasCorrectSize_256) {
EXPECT_EQ(AES256_GCM::EncryptionKey::STRING_LENGTH, CryCiphers::find("aes-256-gcm").createKey().size());
}
TEST_F(CryCipherTest, EncryptionKeyHasCorrectSize_128) {
EXPECT_EQ(AES128_GCM::EncryptionKey::STRING_LENGTH, CryCiphers::find("aes-128-gcm").createKey().size());
}

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@ -41,9 +41,9 @@ public:
TEST_F(CryFsTest, CreatedRootdirIsLoadableAfterClosing) {
{
CryDevice dev(CryConfigLoader().createNewWithWeakKey(config.path()), make_unique_ref<OnDiskBlockStore>(rootdir.path()));
CryDevice dev(CryConfigLoader().createNewForTest(config.path()), make_unique_ref<OnDiskBlockStore>(rootdir.path()));
}
CryDevice dev(CryConfigLoader().loadExisting(config.path()).value(), make_unique_ref<OnDiskBlockStore>(rootdir.path()));
CryDevice dev(CryConfigFile::load(config.path()).value(), make_unique_ref<OnDiskBlockStore>(rootdir.path()));
auto root = dev.Load(bf::path("/"));
dynamic_pointer_move<CryDir>(root.get()).get()->children();
}
@ -52,7 +52,7 @@ TEST_F(CryFsTest, UsingStrongKey1_CreatedRootdirIsLoadableAfterClosing) {
{
CryDevice dev(CryConfigLoader(make_unique_ref<MockConsole>()).createNew(config.path()), make_unique_ref<OnDiskBlockStore>(rootdir.path()));
}
CryDevice dev(CryConfigLoader().loadExisting(config.path()).value(), make_unique_ref<OnDiskBlockStore>(rootdir.path()));
CryDevice dev(CryConfigFile::load(config.path()).value(), make_unique_ref<OnDiskBlockStore>(rootdir.path()));
auto root = dev.Load(bf::path("/"));
dynamic_pointer_move<CryDir>(root.get()).get()->children();
}

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@ -21,7 +21,7 @@ public:
unique_ref<Device> createDevice() override {
auto blockStore = cpputils::make_unique_ref<FakeBlockStore>();
auto config = CryConfigLoader().loadOrCreateWithWeakKey(configFile.path());
auto config = CryConfigLoader().loadOrCreateForTest(configFile.path());
return make_unique_ref<CryDevice>(std::move(config), std::move(blockStore));
}