how to capture http stream using .NET

I would like to capture the file coming in the http stream (loading the response) coming to my webserver, so that I could encrypt it before it is written on my disk? I am trying to use C# and/or ASP.NET for my web collection application.

Any ideas how could I do that? A sample code would certainly be great.

I believe this link will give you everything you want: http://www.aspheute.com/english/20000802.asp.

You may also want to look at http://www.4guysfromrolla.com/webtech/091201-1.shtml or http://www.codeproject.com/aspnet/fileupload.asp.

The primary thing to note is that using the htmlFileInput control gives you access to a PostedFile object which you can work with in memory. It is not saved to disk first.

HTH.