pyenigma.py(1) encrypt/decrypt text according to Enigma machine key settings

SYNOPSIS


pyenigma.py [-h] [-k KEY_FILE] [-d DAY] [-r ROTOR [ROTOR ...]]
[-i RING_SETTING [RING_SETTING ...]]
[-p PLUGBOARD [PLUGBOARD ...]] [-u REFLECTOR] [-s START]
[-t TEXT] [-f FILE] [-x REPLACE_CHAR] [-z] [-v]

DESCRIPTION

pyenigma.py is a command line for processing Enigma messages. Enigma settings can either be specified by command-line arguments, or read from a key file. If reading from a key file, the line labeled with the current day number is used unless the --day argument is provided.

Text to process can be supplied 3 ways:

  • if --text=TEXT is present TEXT is processed
  • if --file=FILE is present the contents of FILE are processed
  • otherwise the text is read from standard input

Please see documentation for the description of the file format.

OPTIONS

-h, --help
show this help message and exit
-k KEY_FILE, --key-file KEY_FILE
path to key file for daily settings
-d DAY, --day DAY
use the settings for day DAY when reading key file
-r ROTOR [ROTOR ...], --rotors ROTOR [ROTOR ...]
rotor list ordered from left to right; e.g III IV I
-i RING_SETTING [RING_SETTING ...], --ring-settings RING_SETTING [RING_SETTING ...]
ring setting list from left to right; e.g. A A J
-p PLUGBOARD [PLUGBOARD ...], --plugboard PLUGBOARD [PLUGBOARD ...]
plugboard settings
-u REFLECTOR, --reflector REFLECTOR
reflector name
-s START, --start START
starting position
-t TEXT, --text TEXT
text to process
-f FILE, --file FILE
input file to process
-x REPLACE_CHAR, --replace-char REPLACE_CHAR
if the input text contains chars not found on the enigma keyboard, replace with this char [default: X]
-z, --delete-chars
if the input text contains chars not found on the enigma keyboard, delete them from the input
-v, --verbose
provide verbose output; include final rotor positions

EXAMPLE

Try these commands to specify settings from the command line: 

    $ pyenigma.py -r III IV V -i 1 2 3 -p AB CD EF GH IJ KL MN -u B -s XYZ
    $ pyenigma.py -r Beta III IV V -i A B C D -p 1/2 3/4 5/6 -u B-Thin -s WXYZ
This command will load Enigma settings from a file: 

    $ pyenigma.py --key-file=enigma.keys -s XYZ -t HELLOXWORLDX

AUTHOR

Brian Neal <[email protected]>

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