void
CClientProxy1_4::cryptoIv()
{
CCryptoStream* cryptoStream = dynamic_cast<CCryptoStream*>(getStream());
if (cryptoStream == NULL) {
return;
}
byte iv[CRYPTO_IV_SIZE];
cryptoStream->newIv(iv);
CString data(reinterpret_cast<const char*>(iv), CRYPTO_IV_SIZE);
LOG((CLOG_DEBUG2 "send crypto iv change to \"%s\"", getName().c_str()));
CProtocolUtil::writef(getStream(), kMsgDCryptoIv, &data);
// change IV only after we've sent the current IV, otherwise
// the client won't be able to decrypt the new IV.
cryptoStream->setEncryptIv(iv);
}
TEST(CClientProxyTests, cryptoIvWrite)
{
g_cryptoIvWrite_writeBufferIndex = 0;
g_cryptoIvWrite_readBufferIndex = 0;
NiceMock<CMockEventQueue> eventQueue;
NiceMock<CMockStream> innerStream;
NiceMock<CMockServer> server;
CCryptoOptions options("ctr", "mock");
IStreamEvents streamEvents;
streamEvents.setEvents(&eventQueue);
CCryptoStream* serverStream = new CCryptoStream(&eventQueue, &innerStream, options, false);
CCryptoStream* clientStream = new CCryptoStream(&eventQueue, &innerStream, options, false);
byte iv[CRYPTO_IV_SIZE];
serverStream->newIv(iv);
serverStream->setEncryptIv(iv);
clientStream->setDecryptIv(iv);
ON_CALL(eventQueue, forIStream()).WillByDefault(ReturnRef(streamEvents));
ON_CALL(innerStream, write(_, _)).WillByDefault(Invoke(cryptoIv_mockWrite));
ON_CALL(innerStream, read(_, _)).WillByDefault(Invoke(cryptoIv_mockRead));
CClientProxy1_4 clientProxy("stub", serverStream, &server, &eventQueue);
UInt8 buffer[100];
clientStream->read(buffer, 4);
g_cryptoIvWrite_writeBufferIndex = 0;
g_cryptoIvWrite_readBufferIndex = 0;
// DCIV, then DKDN.
clientProxy.keyDown(1, 2, 3);
clientStream->read(buffer, 24);
EXPECT_EQ('D', buffer[0]);
EXPECT_EQ('C', buffer[1]);
EXPECT_EQ('I', buffer[2]);
EXPECT_EQ('V', buffer[3]);
clientStream->setDecryptIv(&buffer[8]);
clientStream->read(buffer, 10);
EXPECT_EQ('D', buffer[0]);
EXPECT_EQ('K', buffer[1]);
EXPECT_EQ('D', buffer[2]);
EXPECT_EQ('N', buffer[3]);
g_cryptoIvWrite_writeBufferIndex = 0;
g_cryptoIvWrite_readBufferIndex = 0;
// DCIV, then DKUP.
clientProxy.keyUp(1, 2, 3);
clientStream->read(buffer, 24);
EXPECT_EQ('D', buffer[0]);
EXPECT_EQ('C', buffer[1]);
EXPECT_EQ('I', buffer[2]);
EXPECT_EQ('V', buffer[3]);
clientStream->setDecryptIv(&buffer[8]);
clientStream->read(buffer, 10);
EXPECT_EQ('D', buffer[0]);
EXPECT_EQ('K', buffer[1]);
EXPECT_EQ('U', buffer[2]);
EXPECT_EQ('P', buffer[3]);
g_cryptoIvWrite_writeBufferIndex = 0;
g_cryptoIvWrite_readBufferIndex = 0;
// DCIV, then DKRP.
clientProxy.keyRepeat(1, 2, 4, 4);
clientStream->read(buffer, 24);
EXPECT_EQ('D', buffer[0]);
EXPECT_EQ('C', buffer[1]);
EXPECT_EQ('I', buffer[2]);
EXPECT_EQ('V', buffer[3]);
clientStream->setDecryptIv(&buffer[8]);
clientStream->read(buffer, 12);
EXPECT_EQ('D', buffer[0]);
EXPECT_EQ('K', buffer[1]);
EXPECT_EQ('R', buffer[2]);
EXPECT_EQ('P', buffer[3]);
}
