void CCM_Decryption::finish(secure_vector<byte>& buffer, size_t offset)
{
BOTAN_ASSERT(buffer.size() >= offset, "Offset is sane");
buffer.insert(buffer.begin() + offset, msg_buf().begin(), msg_buf().end());
const size_t sz = buffer.size() - offset;
byte* buf = buffer.data() + offset;
BOTAN_ASSERT(sz >= tag_size(), "We have the tag");
const secure_vector<byte>& ad = ad_buf();
BOTAN_ASSERT(ad.size() % BS == 0, "AD is block size multiple");
const BlockCipher& E = cipher();
secure_vector<byte> T(BS);
E.encrypt(format_b0(sz - tag_size()), T);
for(size_t i = 0; i != ad.size(); i += BS)
{
xor_buf(T.data(), &ad[i], BS);
E.encrypt(T);
}
secure_vector<byte> C = format_c0();
secure_vector<byte> S0(BS);
E.encrypt(C, S0);
inc(C);
secure_vector<byte> X(BS);
const byte* buf_end = &buf[sz - tag_size()];
while(buf != buf_end)
{
const size_t to_proc = std::min<size_t>(BS, buf_end - buf);
E.encrypt(C, X);
xor_buf(buf, X.data(), to_proc);
inc(C);
xor_buf(T.data(), buf, to_proc);
E.encrypt(T);
buf += to_proc;
}
T ^= S0;
if(!same_mem(T.data(), buf_end, tag_size()))
throw Integrity_Failure("CCM tag check failed");
buffer.resize(buffer.size() - tag_size());
}
void CCM_Encryption::finish(secure_vector<byte>& buffer, size_t offset)
{
BOTAN_ASSERT(buffer.size() >= offset, "Offset is sane");
buffer.insert(buffer.begin() + offset, msg_buf().begin(), msg_buf().end());
const size_t sz = buffer.size() - offset;
byte* buf = buffer.data() + offset;
const secure_vector<byte>& ad = ad_buf();
BOTAN_ASSERT(ad.size() % BS == 0, "AD is block size multiple");
const BlockCipher& E = cipher();
secure_vector<byte> T(BS);
E.encrypt(format_b0(sz), T);
for(size_t i = 0; i != ad.size(); i += BS)
{
xor_buf(T.data(), &ad[i], BS);
E.encrypt(T);
}
secure_vector<byte> C = format_c0();
secure_vector<byte> S0(BS);
E.encrypt(C, S0);
inc(C);
secure_vector<byte> X(BS);
const byte* buf_end = &buf[sz];
while(buf != buf_end)
{
const size_t to_proc = std::min<size_t>(BS, buf_end - buf);
xor_buf(T.data(), buf, to_proc);
E.encrypt(T);
E.encrypt(C, X);
xor_buf(buf, X.data(), to_proc);
inc(C);
buf += to_proc;
}
T ^= S0;
buffer += std::make_pair(T.data(), tag_size());
}
int
fdread(int fd, void *buf, int n)
{
mpass::MessageEndPoint *end_point = &mpass::msg_end_point;
mpass::Connection *conn = &end_point->conn_array[fd];
#ifdef maysam_dbg
fprintf(stderr,"fdread on fd=%d : before is_empty\n", fd);
#endif
while(conn->rcv_q->is_empty())
{
#ifdef maysam_dbg
fprintf(stderr,"fdread on fd=%d: before fdwait\n", fd);
#endif
fdwait(fd, 'r');
}
#ifdef maysam_dbg
fprintf(stderr,"fdread on fd=%d: before dequeue\n", fd);
#endif
mpass::simple_msg msg_buf(buf, n);
conn->rcv_q->dequeue(mpass::copy_msg_from_queue, &msg_buf);
int size = msg_buf.size;
#ifdef maysam_dbg
fprintf(stderr,"fdread on fd=%d: after dequeue size is %d\n", fd, size);
#endif
return size;
}
int main (int argc, char **argv)
{
zmq::context_t context(1);
zmq::socket_t socket(context, ZMQ_SUB);
socket.bind("ipc:///tmp/to_app.ipc");
socket.setsockopt(ZMQ_SUBSCRIBE, "", 0);
int rxcount = 0;
while (!stop) {
zmq::message_t msg;
try {
socket.recv(&msg);
} catch (zmq::error_t& e) {
exit(1);
}
std::vector<uint8_t> msg_buf(msg.size());
std::memcpy(msg_buf.data(), msg.data(), msg.size());
std::string msg_str(msg_buf.begin(), msg_buf.end());
HelperRecv recvable =
HelperRecvBuilder()
.fromJson(msg_str)
.build();
rxcount++;
printf("recv'd message [rx count = %d] \n", rxcount);
printf("JSON: %s \n", msg_str.c_str());
printf("message payload: %s \n", recvable.payload.c_str());
printf("\n");
}
return 0;
}
void LoginWindow::on_btnLogin_clicked()
{
if (socket && socket->state() == QAbstractSocket::ConnectedState)
{
tamandua::message_composer msgc(tamandua::standard_message);
msgc << command.arg(ui->txtLogin->text(), ui->txtPassword->text()).toStdString();
tamandua::message msg = msgc();
tamandua::message_buffer msg_buf(msg.header, msg.body);
if (socket->write(msg_buf.get_buffer().get(), msg_buf.get_buffer_size()) == static_cast<qint64>(msg_buf.get_buffer_size()))
{
close();
} else
{
QMessageBox::information(this, QString("Error"), QString("An error occurred while sending message! PLease try again!"));
}
} else
{
QMessageBox::information(this, QString("Error"), QString("You must be connected to server!"));
}
}
