binary file sent from windows -> linux help needed

Hello,

I am sending an encrypted binary file over tcp/ip form windows to linux. When I get into linux and try to run mcrypt to decrypt the file I get "wrong key" error. I am wondering somehow if the file is being corrupted because of the different platforms? Here are some facts I do know:

1. This works with the exact same code windows->windows
2. My file where I write the binary form the tcp/ip stream looks like this:

void StringToFile(string msg, string file)
{
ofstream ofs(file.c_str(), ofstream::binary);
ofs.clear();
ofs.write(msg.data(), message.size());
ofs.close();
}

Can anyone help?

Regards,
Ellay K.

Is that actual code or did you just type it in ? The reason I am asking:

Code:

---

ofs.write(msg.data(), message.size());

---

I just typed it in.. that is a typo.. the actual code is:

ofs.write(msg.data(), msg.size());

Thanks..; any idea what might be going wrong?

Regards,
Ellay K.

One additional piece of information.. this is how I write files to strings:

Code:

---

string WriteFileToString(string filename)
{
        ifstream infile(filename.c_str(), ifstream::binary);
        infile.seekg(0,ios::end);
        size_t length = infile.tellg();
        infile.seekg(0, ios::beg);
        string message(length, 0);
        copy(istreambuf_iterator<char>(infile), istreambuf_iterator<char>(), message.begin());
        return message;
}

---

I am wondering if the line return difference between unix and windows is my problem? I dont know how to fix that.

Regards,
Ellay K.

Another interesting piece of information. If I write the message in the code like this:

Code:

---

string msg="<?xml version=\"1.0\" encoding=\"UTF-8\"?> <Status> <Time>1246650079</Time> <Msg_ID>73</Msg_ID> <Name>Testing </Name>";

---

it works both windows->windows and windows->linux

however if I write it like this:

Code:

---

string msg="<?xml version=\"1.0\" encoding=\"UTF-8\"?> \
                                              <Status> \
                                                  <Time>1246650079</Time> \
                                                      <Msg_ID>73</Msg_ID> \
                                                      <Name>Testing </Name>";

---

It only works windows->windows and not windows to linux.

It also seems to work with linux with less than 170 characters.. more than 170 characters it crashes.. can anyone help me?

Regards,
Ellay K.

The most common reason why using multiple lines would cause a problem is differing newline conventions between the platforms. However, if you're opening all your files (for reading and writing) in binary mode, that shouldn't be a problem.....