Crypto Box

The Crypto Box is a tool to encrypt text by moving the letters. This is done by shuffling the rows and columns of the text square. Retrieving the original position of the letters has proven to be a real challenge due to the large number of possible moves and the complex way the letters travel around the square. Even the simplest shuffles with a few steps create a true brain-teasing puzzle. More steps means a more complex encryption. There are 39 ways to move a row or columns in the box (moving a row back is useless so the 40th doesn't count). For five steps this already gives 40 * 39 * 39 * 39 * 39 = 92,537,640 possible combinations. Each further step multiplies the result with 39. With only 40 steps you will have 4.5x1063 combinations, comparable with an enormous 212 bit key!

The program has an easy interface to shuffle the rows and columns, and each step is recorded, This enables running the key automaticalle or manually. Both text and key can be imported from, and exported to the clipboard in various formats. This small program - only 105 Kb - is ideal to create your own puzzles or encrypt short messages.

Currently, there's a Crypto Box Challenge running at this website. Join this challenge and earn a place in the Table of Honor!

Runs on Windows™ 98/ME/2000/XP/Vista/Win7/Win 8 and on MAC with CrossOver, Parallels Desktop or WINE (open source).

All feedback, suggestions or comments are most welcome by e-mail or by visiting the Guestbook.

Download the Crypto Box program

Download CryptoBox 2.0.1 (full install including runtime files) Zip 1432 KB
Download Cryptobox 2.0.1 (exe file only) Zip 33 Kb (only when the required run-time files are already on your PC!)

Please check the readme file before installation!

Copyright 2004 - 2017 Dirk Rijmenants