Concerning cryptography, Heather wrote:

>Obviously, Ken wasn't trying to make an encryption function but the 
>better Scramble
>scrambles, the better it will function.

Heather,

The original functions I was cloning here were named Encrypt/Decrypt. 
I purposely renamed them so as not to give a false sense of security 
to any who might find them interesting. On several occasions over the 
years I have seen requests here for simple encryption algorithms for 
shareware  and password programs. I thought FN SCRAMBLE$ might fit 
the bill for that. But I realize that it isn't PGP or Blowfish.

>The Applied Crypto book has all the major algorithms but I wonder if 
>there are any open-source
>ones on the internet?

Heather,

You might start here:

<http://cs.bluffton.edu/~jsorice/projects/cryptography/links.html>

and here:

<http://www-md.e-technik.uni-rostock.de/ma/hp/crypto-s.htm>

and down the page to here:

<http://www-md.e-technik.uni-rostock.de/ma/hp/crypto-s.htm#Algorithms>

Beginning here and for the fews pages is a brief technical summary of 
a few algorithms including pseudo-code. The code given for the 
Arithmetic Encoding Compression almost looks like you could drop it 
into FB:

<http://www.cs.technion.ac.il/Labs/Isl/Project/Projects_done/VisionClasses/DIP/Lossless_Compression/node7.html>

And if you're really into it:

<http://www.mail-archive.com/cryptography-digest@.../>

Within the last two days I saw the Diffie-Hellman algorithm 
implemented in VisualBASIC making a port to FB simple, but now I 
can't find it. Should I stumble over it, I'll let you know.

Ken