I've just been assigned a project for school in which the requirements are the following:

"There are two nodes, A and B. Node A reads files and sends the files to node B through socket AND SSL. Node B receives the files, displays the content of files, and calculates the delay time."

I see that the support for SSL in the .NET Framework is limited and my idea is to build a very basic TCP messaging application. Would the libraries here be the way to go?

Yes, you can use the Security Library for your assignment. In fact, there are two example applications that may help you implement it. Take a look at the WebClient [\Samples\SSL\WebClient] and WebServer [\Samples\SSL\WebServer] applications. The first is a small HTTP client, the second is a small HTTP server.