A Program to Shuffle Binary Files

This is the first reversible binary shuffle program. It's different from a conventional file scrambler since operations can be chained.

This program is a commandline utility for Binary file shuffling. It allows the contents of a file to be reversibly shuffled and reversibly unshuffled. The shuffle uses a pseudo random number generator to shuffle and unshuffle the file. There are currently 8 file shuffle operations. It can also display the hex code of a file. These are:

• 1. File reverse - Reverses a file
• 2. File shuffle - Randomly shuffles a file. This is reversible by the unshuffle.
• 3. File unshuffle - Unshuffle a file (This reverses a shuffle if the seed and iterations are the same)
• 4. Add to the file a random number
• 5. Subtract from the file (It is the reverse of an add)
• 6. Byte add - Add to the file bytes a number
• 6. Byte subtract - Subtract from file bytes a number
• 7. Shuffle n iterations by a seed randomly
• 8. Unshuffle n iterations by a seed randomly

This is the file command line usage. This program is written in C and can be compiled under Linux.

Shuffle arguments 1

• usage: ./shuffle -rev filename (Reverse a file)

• usage: ./shuffle -hex filename

• usage: ./shuffle -sh filename (Shuffle a file)

• usage: ./shuffle -ush filename

• usage: ./shuffle -add filename

• usage: ./shuffle -sub filename

• usage: ./shuffle -add number filename

• usage: ./shuffle -sub number filename

• usage: ./shuffle -sh seed iterations filename

• usage: ./shuffle -ush seed iterations filename

These are some Linux command line examples of reversing and shuffling

./shuffle -rev data1.txt

./shuffle -rev data1.txt.reverse

./shuffle -rev data1.txt.reverse

./shuffle.sh -sh data1.txt

./shuffle -sh data1.txt

./shuffle -ush data1.txt.shuffle

./shuffle -add data1.txt

./shuffle -sub data1.txt.add

./shuffle -add data1.txt.shuffle.unshuffle

This is an example of shuffling a file (data1.txt) with 10 iterations and a seed value of 200 for the Pseudo Random Number Generator.

./shuffle -sh 200 10 data1.txt

Shuffle arguments 5

shuffle file size 89

shuffle file 0

shuffle file 1

shuffle file 2

shuffle file 3

shuffle file 4

shuffle file 5

shuffle file 6

shuffle file 7

shuffle file 8

shuffle file 9

filename = data1.txt.shuffle

This is an example the file data1.txt with several shuffle operations including reverse and unreverse and shuffle and unshuffle and add and subtract.

data1.txt

data1.txt.reverse

data1.txt.reverse.reverse

data1.txt.shuffle

data1.txt.shuffle.unshuffle

data1.txt.add

data1.txt.add.sub

data1.txt.shuffle.unshuffle.add

Bitcoin donations: 148JgizuinHxfPrAqtwJSZndPnnQcnHv4X

This program is licensed under the GNU GPL.

============================================= Copyright 2016 Nathan Ross

A Nathan Ross design "Festival of a Thousand Lights"

January 29, 2014