C++ Is it possible to encrypt data sent over a named pipe?

I have a named pipe server and a named pipe client that communicate with each other. But I don't want anyone to be able to read the data sent via the named pipe. The code is written in C++.

I have couple of questions:

1) is it possible at all tap into a named pipe?

2) if it is possible to tap into a named pipe, is it possible to encrypt data being sent via the named pipe?