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Added test cases for inner config file encryption

This commit is contained in:
Sebastian Messmer 2015-11-11 11:03:05 -08:00
parent 6d4ae65660
commit d003b7f0c5
3 changed files with 136 additions and 1 deletions
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2
src/config/crypto/inner/ConcreteInnerEncryptor.h
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@ -9,7 +9,6 @@
#include "InnerConfig.h"
namespace cryfs {
//TODO Test
template<class Cipher>
class ConcreteInnerEncryptor: public InnerEncryptor {
public:
@ -38,6 +37,7 @@ namespace cryfs {
}
auto decrypted = Cipher::decrypt(static_cast<const uint8_t*>(innerConfig.encryptedConfig.data()), innerConfig.encryptedConfig.size(), _key);
if (decrypted == boost::none) {
cpputils::logging::LOG(cpputils::logging::ERROR) << "Failed decrypting configuration file";
return boost::none;
}
auto configData = cpputils::RandomPadding::remove(*decrypted);

85
test/config/crypto/inner/ConcreteInnerEncryptorTest.cpp Normal file
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@ -0,0 +1,85 @@
#include <google/gtest/gtest.h>
#include "../../../../src/config/crypto/inner/ConcreteInnerEncryptor.h"
#include <messmer/cpp-utils/crypto/symmetric/ciphers.h>
#include <messmer/cpp-utils/data/DataFixture.h>
#include <boost/optional/optional_io.hpp>
using std::ostream;
using boost::none;
using cpputils::Data;
using cpputils::DataFixture;
using cpputils::unique_ref;
using cpputils::make_unique_ref;
using cpputils::AES256_GCM;
using cpputils::AES256_CFB;
using cpputils::Twofish128_CFB;
using namespace cryfs;
// This is needed for google test
namespace boost {
ostream &operator<<(ostream &stream, const Data &) {
return stream << "cpputils::Data()";
}
}
class ConcreteInnerEncryptorTest : public ::testing::Test {
public:
template<class Cipher>
unique_ref<InnerEncryptor> makeInnerEncryptor() {
auto key = DataFixture::generateFixedSize<Cipher::EncryptionKey::BINARY_LENGTH>();
return make_unique_ref<ConcreteInnerEncryptor<Cipher>>(key);
}
};
TEST_F(ConcreteInnerEncryptorTest, EncryptAndDecrypt_AES) {
auto encryptor = makeInnerEncryptor<AES256_GCM>();
InnerConfig encrypted = encryptor->encrypt(DataFixture::generate(200));
Data decrypted = encryptor->decrypt(encrypted).value();
EXPECT_EQ(DataFixture::generate(200), decrypted);
}
TEST_F(ConcreteInnerEncryptorTest, EncryptAndDecrypt_Twofish) {
auto encryptor = makeInnerEncryptor<Twofish128_CFB>();
InnerConfig encrypted = encryptor->encrypt(DataFixture::generate(200));
Data decrypted = encryptor->decrypt(encrypted).value();
EXPECT_EQ(DataFixture::generate(200), decrypted);
}
TEST_F(ConcreteInnerEncryptorTest, EncryptAndDecrypt_EmptyData) {
auto encryptor = makeInnerEncryptor<AES256_GCM>();
InnerConfig encrypted = encryptor->encrypt(Data(0));
Data decrypted = encryptor->decrypt(encrypted).value();
EXPECT_EQ(Data(0), decrypted);
}
TEST_F(ConcreteInnerEncryptorTest, DoesntDecryptWithWrongCipherName) {
auto encryptor = makeInnerEncryptor<Twofish128_CFB>();
InnerConfig encrypted = encryptor->encrypt(Data(0));
encrypted.cipherName = AES256_CFB::NAME;
auto decrypted = encryptor->decrypt(encrypted);
EXPECT_EQ(none, decrypted);
}
TEST_F(ConcreteInnerEncryptorTest, InvalidCiphertext) {
auto encryptor = makeInnerEncryptor<AES256_GCM>();
InnerConfig encrypted = encryptor->encrypt(DataFixture::generate(200));
*(char*)encrypted.encryptedConfig.data() = *(char*)encrypted.encryptedConfig.data()+1; //Modify ciphertext
auto decrypted = encryptor->decrypt(encrypted);
EXPECT_EQ(none, decrypted);
}
TEST_F(ConcreteInnerEncryptorTest, DoesntEncryptWhenTooLarge) {
auto encryptor = makeInnerEncryptor<AES256_GCM>();
EXPECT_THROW(
encryptor->encrypt(DataFixture::generate(2000)),
std::runtime_error
);
}
TEST_F(ConcreteInnerEncryptorTest, EncryptionIsFixedSize) {
auto encryptor = makeInnerEncryptor<AES256_GCM>();
InnerConfig encrypted1 = encryptor->encrypt(DataFixture::generate(200));
InnerConfig encrypted2 = encryptor->encrypt(Data(0));
EXPECT_EQ(encrypted1.encryptedConfig.size(), encrypted2.encryptedConfig.size());
}

50
test/config/crypto/inner/InnerConfigTest.cpp Normal file
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@ -0,0 +1,50 @@
#include <google/gtest/gtest.h>
#include <messmer/cpp-utils/data/DataFixture.h>
#include <boost/optional/optional_io.hpp>
#include "../../../../src/config/crypto/inner/InnerConfig.h"
using cpputils::Data;
using cpputils::DataFixture;
using boost::none;
using std::ostream;
using namespace cryfs;
// This is needed for google test
namespace boost {
ostream &operator<<(ostream &stream, const InnerConfig &config) {
return stream << "InnerConfig(" << config.cipherName << ", [data])";
}
}
TEST(InnerConfigTest, SomeValues) {
Data serialized = InnerConfig{"myciphername", DataFixture::generate(1024)}.serialize();
InnerConfig deserialized = InnerConfig::deserialize(serialized).value();
EXPECT_EQ("myciphername", deserialized.cipherName);
EXPECT_EQ(DataFixture::generate(1024), deserialized.encryptedConfig);
}
TEST(InnerConfigTest, DataEmpty) {
Data serialized = InnerConfig{"myciphername", Data(0)}.serialize();
InnerConfig deserialized = InnerConfig::deserialize(serialized).value();
EXPECT_EQ("myciphername", deserialized.cipherName);
EXPECT_EQ(Data(0), deserialized.encryptedConfig);
}
TEST(InnerConfigTest, CipherNameEmpty) {
Data serialized = InnerConfig{"", DataFixture::generate(1024)}.serialize();
InnerConfig deserialized = InnerConfig::deserialize(serialized).value();
EXPECT_EQ("", deserialized.cipherName);
EXPECT_EQ(DataFixture::generate(1024), deserialized.encryptedConfig);
}
TEST(InnerConfigTest, DataAndCipherNameEmpty) {
Data serialized = InnerConfig{"", Data(0)}.serialize();
InnerConfig deserialized = InnerConfig::deserialize(serialized).value();
EXPECT_EQ("", deserialized.cipherName);
EXPECT_EQ(Data(0), deserialized.encryptedConfig);
}
TEST(InnerConfigTest, InvalidSerialization) {
auto deserialized = InnerConfig::deserialize(DataFixture::generate(1024));
EXPECT_EQ(none, deserialized);
}