88 lines
3.2 KiB
C++
88 lines
3.2 KiB
C++
#include <gtest/gtest.h>
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#include <cryfs/config/crypto/inner/ConcreteInnerEncryptor.h>
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#include <cpp-utils/crypto/symmetric/ciphers.h>
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#include <cpp-utils/data/DataFixture.h>
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using std::ostream;
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using boost::none;
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using cpputils::Data;
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using cpputils::DataFixture;
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using cpputils::unique_ref;
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using cpputils::make_unique_ref;
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using cpputils::AES256_GCM;
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using cpputils::AES256_CFB;
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using cpputils::Twofish128_CFB;
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using namespace cryfs;
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// This is needed for google test
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namespace boost {
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inline ostream &operator<<(ostream &stream, const Data &) {
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return stream << "cpputils::Data()";
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}
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}
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#include <boost/optional/optional_io.hpp>
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class ConcreteInnerEncryptorTest : public ::testing::Test {
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public:
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template<class Cipher>
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unique_ref<InnerEncryptor> makeInnerEncryptor() {
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auto key = DataFixture::generateFixedSize<Cipher::EncryptionKey::BINARY_LENGTH>();
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return make_unique_ref<ConcreteInnerEncryptor<Cipher>>(key);
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}
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};
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TEST_F(ConcreteInnerEncryptorTest, EncryptAndDecrypt_AES) {
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auto encryptor = makeInnerEncryptor<AES256_GCM>();
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InnerConfig encrypted = encryptor->encrypt(DataFixture::generate(200));
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Data decrypted = encryptor->decrypt(encrypted).value();
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EXPECT_EQ(DataFixture::generate(200), decrypted);
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}
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TEST_F(ConcreteInnerEncryptorTest, EncryptAndDecrypt_Twofish) {
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auto encryptor = makeInnerEncryptor<Twofish128_CFB>();
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InnerConfig encrypted = encryptor->encrypt(DataFixture::generate(200));
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Data decrypted = encryptor->decrypt(encrypted).value();
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EXPECT_EQ(DataFixture::generate(200), decrypted);
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}
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TEST_F(ConcreteInnerEncryptorTest, EncryptAndDecrypt_EmptyData) {
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auto encryptor = makeInnerEncryptor<AES256_GCM>();
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InnerConfig encrypted = encryptor->encrypt(Data(0));
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Data decrypted = encryptor->decrypt(encrypted).value();
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EXPECT_EQ(Data(0), decrypted);
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}
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TEST_F(ConcreteInnerEncryptorTest, DoesntDecryptWithWrongCipherName) {
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auto encryptor = makeInnerEncryptor<Twofish128_CFB>();
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InnerConfig encrypted = encryptor->encrypt(Data(0));
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encrypted.cipherName = AES256_CFB::NAME;
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auto decrypted = encryptor->decrypt(encrypted);
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EXPECT_EQ(none, decrypted);
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}
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TEST_F(ConcreteInnerEncryptorTest, InvalidCiphertext) {
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auto encryptor = makeInnerEncryptor<AES256_GCM>();
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InnerConfig encrypted = encryptor->encrypt(DataFixture::generate(200));
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*(char*)encrypted.encryptedConfig.data() = *(char*)encrypted.encryptedConfig.data()+1; //Modify ciphertext
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auto decrypted = encryptor->decrypt(encrypted);
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EXPECT_EQ(none, decrypted);
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}
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TEST_F(ConcreteInnerEncryptorTest, DoesntEncryptWhenTooLarge) {
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auto encryptor = makeInnerEncryptor<AES256_GCM>();
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EXPECT_THROW(
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encryptor->encrypt(DataFixture::generate(2000)),
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std::runtime_error
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);
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}
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TEST_F(ConcreteInnerEncryptorTest, EncryptionIsFixedSize) {
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auto encryptor = makeInnerEncryptor<AES256_GCM>();
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InnerConfig encrypted1 = encryptor->encrypt(DataFixture::generate(100));
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InnerConfig encrypted2 = encryptor->encrypt(DataFixture::generate(200));
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InnerConfig encrypted3 = encryptor->encrypt(Data(0));
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EXPECT_EQ(encrypted1.encryptedConfig.size(), encrypted2.encryptedConfig.size());
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EXPECT_EQ(encrypted1.encryptedConfig.size(), encrypted3.encryptedConfig.size());
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}
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