Design (easy-ish) cipher C++ implentation,

From: m_houllier (none)
Date: 11/30/03 

Date: Sat, 29 Nov 2003 23:35:16 -0000

Hey folk,

For a university project, I'm looking to design a cipher to encrypt using a
simple text string. Username to be parsed and password. I originally started
off with the idea of using 3Des or custom Des based for the cipher, but it's
gonna get too complicated I think, what I need is something that is feasible
to make within 2 months.

Username is 5 characters (10 bytes ASCII,)
Password up to 20 characters (40 bytes ASCII)

So, overall we have a 50 byte key size,

Now it's me final year and I want to do well :-)
So, I've done the visio etc for the program, but not the encryption process
yet.

What I propose is,

* Read the data into array
* Read username password
* Go through some permutations.
* Bit swap with the key.

I think I'm right in suggesting that the permutations are better coming
first in order to blind the data?

Anyway, any reading material / suggestions etc would be very happily
received :-)

- MH
(wants a good degree!)

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