Applications of cryptography

I am trying to compile information about the different applications of cryptography.

There's no need. Go out and buy Bruce Schneier's new crypto book whose title I forget. I has exactly the selection of articles you want and comes with source code. Cody's here in Berkeley has four copies on order; I'll bet they sell out in a week once they arrive. Bruce was offering to send people copies in exchange for a check; details were on sci.crypt. I'm sure there are interesting topics in there that you'd want covered, but there's no need to duplicate the effort of a fellow who's worked on this for a couple of years. Eric