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Re: Simple alphanumeric "encryption"?

From Roedy Green <see_website@mindprod.com.invalid>
Newsgroups comp.lang.java.programmer
Subject Re: Simple alphanumeric "encryption"?
Date 2011-10-20 13:36 -0700
Organization Canadian Mind Products
Message-ID <ve11a7pv0mji22etgdnnfo8ghu5jir38nn@4ax.com> (permalink)
References <S8idnWT1OekbSwbTnZ2dnUVZ_q-dnZ2d@westnet.com.au>

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On Mon, 17 Oct 2011 18:16:48 +1100, "Qu0ll" <Qu0llSixFour@gmail.com>
wrote, quoted or indirectly quoted someone who said :

>Is there a simple way to do this?  It must be able to successfully be 
>decrypted as well but doesn't need to be very sophisticated or extremely 
>secure.

you could use the technique from the Cryptogram puzzles in the
newspaper I used to love solving as a child.

It take a random permutation of the glyphs you permit is your message.

You then create a lookup table by letter to substitution letter to
encrypt your message.  These are very easy to crack, but they have the
advantage they don't need armouring and the encrypted version is the
same length as the original.
-- 
Roedy Green Canadian Mind Products
http://mindprod.com
It should not be considered an error when the user starts something
already started or stops something already stopped. This applies
to browsers, services, editors... It is inexcusable to 
punish the user by requiring some elaborate sequence to atone,
e.g. open the task editor, find and kill some processes.

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Thread

Simple alphanumeric "encryption"? "Qu0ll" <Qu0llSixFour@gmail.com> - 2011-10-17 18:16 +1100
  Re: Simple alphanumeric "encryption"? Arne Vajhøj <arne@vajhoej.dk> - 2011-10-17 08:13 -0400
    Re: Simple alphanumeric "encryption"? Travers Naran <tnaran@gmail.com> - 2011-10-18 06:47 -0700
      Re: Simple alphanumeric "encryption"? David Segall <david@address.invalid> - 2011-10-20 00:36 +1100
  Re: Simple alphanumeric "encryption"? Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-10-17 12:27 +0000
  Re: Simple alphanumeric "encryption"? Tom Anderson <twic@urchin.earth.li> - 2011-10-17 16:45 +0100
    Re: Simple alphanumeric "encryption"? "Qu0ll" <Qu0llSixFour@gmail.com> - 2011-10-18 14:18 +1100
      Re: Simple alphanumeric "encryption"? "Qu0ll" <Qu0llSixFour@gmail.com> - 2011-10-18 14:25 +1100
      Re: Simple alphanumeric "encryption"? Lew <lewbloch@gmail.com> - 2011-10-18 08:43 -0700
      Re: Simple alphanumeric "encryption"? Tom Anderson <twic@urchin.earth.li> - 2011-10-20 20:57 +0100
  Re: Simple alphanumeric "encryption"? B1ll Gat3s <wm.g4t3s@m1cr0s0f7.c0m> - 2011-10-17 21:33 -0400
  Re: Simple alphanumeric "encryption"? Roedy Green <see_website@mindprod.com.invalid> - 2011-10-20 13:32 -0700
  Re: Simple alphanumeric "encryption"? Roedy Green <see_website@mindprod.com.invalid> - 2011-10-20 13:36 -0700

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