Applications of cryptography

[wonderer]

My apologies for getting caught up in the political
momentum of the Private vs. Public debate on income
tax. It was too tempting...

Anyway, back to wondering.

I am trying to compile information about the different
applications of cryptography. I would like to create
something like the handbook of cryptography. Some
examples that come to mind are: digital cash, DC nets,
coin flipping, mental poker, digital signatures,
secure communication, encrypted file systems, etc.
Any help will be appreciated. 

If people respond to me directly, I will post a summary
to the list, and maybe distribute the handbook if it is
a successful project in a few months.

Thanks,
Wonderer
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