Pf 1

Pf is a C program that implements the manual cryptosystem "Playfair" invented in 1854 by Charles Wheatstone.
Pf
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Pf project implements the manual cryptosystem "Playfair" invented in 1854 by Charles Wheatstone.

Sample output

$ ./pf

pf version 1 Copyright (C) 2006 Timothy Jon Fraser
pf comes with ABSOLUTELY NO WARRANTY. This is free software, and you
are welcome to redistribute it under certain conditions. See the
LICENSE.txt file in the source distribution for details.

Usage examples:

Encrypt text from stdin to stdout:
pf -k MyKeyWord

Format output in 2-letter groups, 4 groups per line:
pf -k MyKeyWord -l 2 -g 4

Decrypt text from stdin to stdout:
pf -k MyKeyWord -d

Show key square for debugging purposes:
pf -k MyKeyWord -s

Show letters used by keyword for debugging purposes:
pf -k MyKeyWord -u

$ ./pf -k Apophenia -s

a p o h e
n i b c d
f g k l m
q r s t u
v w x y z

$ echo "An example message." | ./pf -k Apophenia
nfoz efhg duou qomp

$ echo "An example message." | ./pf -k Apophenia | ./pf -k Apohenia -d
anex ampl emes sage

last updated on:
September 26th, 2006, 14:56 GMT
price:
FREE!
homepage:
alum.wpi.edu
license type:
GPL (GNU General Public License) 
developed by:
Tim Fraser
category:
ROOT \ Security
Pf
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