mirror of
https://github.com/nextcloud/desktop.git
synced 2024-12-22 05:34:33 +03:00
282 lines
10 KiB
C++
282 lines
10 KiB
C++
/*
|
|
This software is in the public domain, furnished "as is", without technical
|
|
support, and with no warranty, express or implied, as to its usefulness for
|
|
any purpose.
|
|
*/
|
|
|
|
#include <QtTest>
|
|
|
|
#include <QTemporaryFile>
|
|
#include <QRandomGenerator>
|
|
|
|
#include <common/constants.h>
|
|
|
|
#include "clientsideencryption.h"
|
|
#include "logger.h"
|
|
|
|
using namespace OCC;
|
|
|
|
class TestClientSideEncryption : public QObject
|
|
{
|
|
Q_OBJECT
|
|
|
|
QByteArray convertToOldStorageFormat(const QByteArray &data)
|
|
{
|
|
return data.split('|').join("fA==");
|
|
}
|
|
|
|
private slots:
|
|
void initTestCase()
|
|
{
|
|
OCC::Logger::instance()->setLogFlush(true);
|
|
OCC::Logger::instance()->setLogDebug(true);
|
|
|
|
QStandardPaths::setTestModeEnabled(true);
|
|
}
|
|
|
|
void shouldEncryptPrivateKeys()
|
|
{
|
|
// GIVEN
|
|
const auto encryptionKey = QByteArrayLiteral("foo");
|
|
const auto privateKey = QByteArrayLiteral("bar");
|
|
const auto originalSalt = QByteArrayLiteral("baz");
|
|
|
|
// WHEN
|
|
const auto cipher = EncryptionHelper::encryptPrivateKey(encryptionKey, privateKey, originalSalt);
|
|
|
|
// THEN
|
|
const auto parts = cipher.split('|');
|
|
QCOMPARE(parts.size(), 3);
|
|
|
|
const auto encryptedKey = QByteArray::fromBase64(parts[0]);
|
|
const auto iv = QByteArray::fromBase64(parts[1]);
|
|
const auto salt = QByteArray::fromBase64(parts[2]);
|
|
|
|
// We're not here to check the merits of the encryption but at least make sure it's been
|
|
// somewhat ciphered
|
|
QVERIFY(!encryptedKey.isEmpty());
|
|
QVERIFY(encryptedKey != privateKey);
|
|
|
|
QVERIFY(!iv.isEmpty());
|
|
QCOMPARE(salt, originalSalt);
|
|
}
|
|
|
|
void shouldDecryptPrivateKeys()
|
|
{
|
|
// GIVEN
|
|
const auto encryptionKey = QByteArrayLiteral("foo");
|
|
const auto originalPrivateKey = QByteArrayLiteral("bar");
|
|
const auto originalSalt = QByteArrayLiteral("baz");
|
|
const auto cipher = EncryptionHelper::encryptPrivateKey(encryptionKey, originalPrivateKey, originalSalt);
|
|
|
|
// WHEN
|
|
const auto privateKey = EncryptionHelper::decryptPrivateKey(encryptionKey, cipher);
|
|
const auto salt = EncryptionHelper::extractPrivateKeySalt(cipher);
|
|
|
|
// THEN
|
|
QCOMPARE(privateKey, originalPrivateKey);
|
|
QCOMPARE(salt, originalSalt);
|
|
}
|
|
|
|
void shouldDecryptPrivateKeysInOldStorageFormat()
|
|
{
|
|
// GIVEN
|
|
const auto encryptionKey = QByteArrayLiteral("foo");
|
|
const auto originalPrivateKey = QByteArrayLiteral("bar");
|
|
const auto originalSalt = QByteArrayLiteral("baz");
|
|
const auto cipher = convertToOldStorageFormat(EncryptionHelper::encryptPrivateKey(encryptionKey, originalPrivateKey, originalSalt));
|
|
|
|
// WHEN
|
|
const auto privateKey = EncryptionHelper::decryptPrivateKey(encryptionKey, cipher);
|
|
const auto salt = EncryptionHelper::extractPrivateKeySalt(cipher);
|
|
|
|
// THEN
|
|
QCOMPARE(privateKey, originalPrivateKey);
|
|
QCOMPARE(salt, originalSalt);
|
|
}
|
|
|
|
void shouldSymmetricEncryptStrings()
|
|
{
|
|
// GIVEN
|
|
const auto encryptionKey = QByteArrayLiteral("foo");
|
|
const auto data = QByteArrayLiteral("bar");
|
|
|
|
// WHEN
|
|
const auto cipher = EncryptionHelper::encryptStringSymmetric(encryptionKey, data);
|
|
|
|
// THEN
|
|
const auto parts = cipher.split('|');
|
|
QCOMPARE(parts.size(), 2);
|
|
|
|
const auto encryptedData = QByteArray::fromBase64(parts[0]);
|
|
const auto iv = QByteArray::fromBase64(parts[1]);
|
|
|
|
// We're not here to check the merits of the encryption but at least make sure it's been
|
|
// somewhat ciphered
|
|
QVERIFY(!encryptedData.isEmpty());
|
|
QVERIFY(encryptedData != data);
|
|
|
|
QVERIFY(!iv.isEmpty());
|
|
}
|
|
|
|
void shouldSymmetricDecryptStrings()
|
|
{
|
|
// GIVEN
|
|
const auto encryptionKey = QByteArrayLiteral("foo");
|
|
const auto originalData = QByteArrayLiteral("bar");
|
|
const auto cipher = EncryptionHelper::encryptStringSymmetric(encryptionKey, originalData);
|
|
|
|
// WHEN
|
|
const auto data = EncryptionHelper::decryptStringSymmetric(encryptionKey, cipher);
|
|
|
|
// THEN
|
|
QCOMPARE(data, originalData);
|
|
}
|
|
|
|
void shouldSymmetricDecryptStringsInOldStorageFormat()
|
|
{
|
|
// GIVEN
|
|
const auto encryptionKey = QByteArrayLiteral("foo");
|
|
const auto originalData = QByteArrayLiteral("bar");
|
|
const auto cipher = convertToOldStorageFormat(EncryptionHelper::encryptStringSymmetric(encryptionKey, originalData));
|
|
|
|
// WHEN
|
|
const auto data = EncryptionHelper::decryptStringSymmetric(encryptionKey, cipher);
|
|
|
|
// THEN
|
|
QCOMPARE(data, originalData);
|
|
}
|
|
|
|
void testStreamingDecryptor_data()
|
|
{
|
|
QTest::addColumn<int>("totalBytes");
|
|
QTest::addColumn<int>("bytesToRead");
|
|
|
|
QTest::newRow("data1") << 64 << 2;
|
|
QTest::newRow("data2") << 32 << 8;
|
|
QTest::newRow("data3") << 76 << 64;
|
|
QTest::newRow("data4") << 272 << 256;
|
|
}
|
|
|
|
void testStreamingDecryptor()
|
|
{
|
|
QFETCH(int, totalBytes);
|
|
|
|
QTemporaryFile dummyInputFile;
|
|
|
|
QVERIFY(dummyInputFile.open());
|
|
|
|
const auto dummyFileRandomContents = EncryptionHelper::generateRandom(totalBytes);
|
|
|
|
QCOMPARE(dummyInputFile.write(dummyFileRandomContents), dummyFileRandomContents.size());
|
|
|
|
const auto generateHash = [](const QByteArray &data) {
|
|
QCryptographicHash hash(QCryptographicHash::Sha1);
|
|
hash.addData(data);
|
|
return hash.result();
|
|
};
|
|
|
|
const QByteArray originalFileHash = generateHash(dummyFileRandomContents);
|
|
|
|
QVERIFY(!originalFileHash.isEmpty());
|
|
|
|
dummyInputFile.close();
|
|
QVERIFY(!dummyInputFile.isOpen());
|
|
|
|
const auto encryptionKey = EncryptionHelper::generateRandom(16);
|
|
const auto initializationVector = EncryptionHelper::generateRandom(16);
|
|
|
|
// test normal file encryption/decryption
|
|
QTemporaryFile dummyEncryptionOutputFile;
|
|
|
|
QByteArray tag;
|
|
|
|
QVERIFY(EncryptionHelper::fileEncryption(encryptionKey, initializationVector, &dummyInputFile, &dummyEncryptionOutputFile, tag));
|
|
dummyInputFile.close();
|
|
QVERIFY(!dummyInputFile.isOpen());
|
|
|
|
dummyEncryptionOutputFile.close();
|
|
QVERIFY(!dummyEncryptionOutputFile.isOpen());
|
|
|
|
QTemporaryFile dummyDecryptionOutputFile;
|
|
|
|
QVERIFY(EncryptionHelper::fileDecryption(encryptionKey, initializationVector, &dummyEncryptionOutputFile, &dummyDecryptionOutputFile));
|
|
QVERIFY(dummyDecryptionOutputFile.open());
|
|
const auto dummyDecryptionOutputFileHash = generateHash(dummyDecryptionOutputFile.readAll());
|
|
QCOMPARE(dummyDecryptionOutputFileHash, originalFileHash);
|
|
|
|
// test streaming decryptor
|
|
EncryptionHelper::StreamingDecryptor streamingDecryptor(encryptionKey, initializationVector, dummyEncryptionOutputFile.size());
|
|
QVERIFY(streamingDecryptor.isInitialized());
|
|
|
|
QBuffer chunkedOutputDecrypted;
|
|
QVERIFY(chunkedOutputDecrypted.open(QBuffer::WriteOnly));
|
|
|
|
QVERIFY(dummyEncryptionOutputFile.open());
|
|
|
|
QByteArray pendingBytes;
|
|
|
|
QFETCH(int, bytesToRead);
|
|
|
|
while (dummyEncryptionOutputFile.pos() < dummyEncryptionOutputFile.size()) {
|
|
const auto bytesRemaining = dummyEncryptionOutputFile.size() - dummyEncryptionOutputFile.pos();
|
|
auto toRead = bytesRemaining > bytesToRead ? bytesToRead : bytesRemaining;
|
|
|
|
if (dummyEncryptionOutputFile.pos() + toRead > dummyEncryptionOutputFile.size()) {
|
|
toRead = dummyEncryptionOutputFile.size() - dummyEncryptionOutputFile.pos();
|
|
}
|
|
|
|
if (bytesRemaining - toRead != 0 && bytesRemaining - toRead < OCC::Constants::e2EeTagSize) {
|
|
// decryption is going to fail if last chunk does not include or does not equal to OCC::Constants::e2EeTagSize bytes tag
|
|
// since we are emulating random size of network packets, we may end up reading beyond OCC::Constants::e2EeTagSize bytes tag at the end
|
|
// in that case, we don't want to try and decrypt less than OCC::Constants::e2EeTagSize ending bytes of tag, we will accumulate all the incoming data till the end
|
|
// and then, we are going to decrypt the entire chunk containing OCC::Constants::e2EeTagSize bytes at the end
|
|
pendingBytes += dummyEncryptionOutputFile.read(bytesRemaining);
|
|
continue;
|
|
}
|
|
|
|
const auto decryptedChunk = streamingDecryptor.chunkDecryption(dummyEncryptionOutputFile.read(toRead).constData(), toRead);
|
|
|
|
QVERIFY(decryptedChunk.size() == toRead || streamingDecryptor.isFinished() || !pendingBytes.isEmpty());
|
|
|
|
chunkedOutputDecrypted.write(decryptedChunk);
|
|
}
|
|
|
|
if (!pendingBytes.isEmpty()) {
|
|
const auto decryptedChunk = streamingDecryptor.chunkDecryption(pendingBytes.constData(), pendingBytes.size());
|
|
|
|
QVERIFY(decryptedChunk.size() == pendingBytes.size() || streamingDecryptor.isFinished());
|
|
|
|
chunkedOutputDecrypted.write(decryptedChunk);
|
|
}
|
|
|
|
chunkedOutputDecrypted.close();
|
|
|
|
QVERIFY(chunkedOutputDecrypted.open(QBuffer::ReadOnly));
|
|
QCOMPARE(generateHash(chunkedOutputDecrypted.readAll()), originalFileHash);
|
|
chunkedOutputDecrypted.close();
|
|
}
|
|
|
|
void testGzipThenEncryptDataAndBack()
|
|
{
|
|
const auto metadataKeySize = 16;
|
|
|
|
const auto keyForEncryption = EncryptionHelper::generateRandom(metadataKeySize);
|
|
const auto inputData = QByteArrayLiteral("sample text for encryption test");
|
|
const auto initializationVector = EncryptionHelper::generateRandom(metadataKeySize);
|
|
|
|
QByteArray authenticationTag;
|
|
const auto gzippedThenEncryptData = EncryptionHelper::gzipThenEncryptData(keyForEncryption, inputData, initializationVector, authenticationTag);
|
|
|
|
QVERIFY(!gzippedThenEncryptData.isEmpty());
|
|
|
|
const auto decryptedThebGzipUnzippedData = EncryptionHelper::decryptThenUnGzipData(keyForEncryption, gzippedThenEncryptData, initializationVector);
|
|
|
|
QVERIFY(!decryptedThebGzipUnzippedData.isEmpty());
|
|
|
|
QCOMPARE(inputData, decryptedThebGzipUnzippedData);
|
|
}
|
|
};
|
|
|
|
QTEST_APPLESS_MAIN(TestClientSideEncryption)
|
|
#include "testclientsideencryption.moc"
|