Bazeries Cipher

about

Implementation of Bazeries Cipher using asynchronous flows and coroutines. Application provides command line and graphical interfaces.

Features:

encryption of given text and files
decryption of given text and files
random key generation
using digit or full name key
basic English alphabet or full Polish alphabet with digits and special characters

build

./gradlew shadowJar

Resulting jar is written to build/libs/bazeries.jar

run

gui

Features:

encrypt/decrypt text
encrypt/decrypt file
use given or random key
use digit or full name key
use basic or extended alphabet

cli

CLI was developed only for development purposes and has very limites features

command

java -jar cli bazeries.jar ARGS

options for ARGS

WORD <KEY> - encrypt word encrypt
-f FILENAME <KEY> - encrypt file, result is written to FILENAME.enc
-d ARGS - decrypt word or file; file result is written to FILENAME.dec

algorithm

how it works?

alphabet: abcdefghiklmnopqrstuvwxyz

The alphabet is filled into a 5x5 matrix column by column, a second matrix is filled line by line with a keyword (a number smaller than a million) followed by the remaining letters of the alphabet. Then the message is divide into blocks of arbitrary length and their characters' order is inverted. Finally, each letter is substituted by its counterpart in the second matrix.

additional features

extended alphabet:

aąbcćdeęfghijklłmnńoópqrsśtuvwxyzźż
AĄBCĆDEĘFHGIJKLŁMNŃOÓPQRSŚTUVWXYZŹŻ
!@#$%^&*()-=_+[]{}|\;:'",.<>/?`~
1234567890 space and new line

keyword generated basing on key
digit names keyword (i.e. for 123 -> onetwhr)
full number name keyword (i.e. for 123 -> onehudreatwyf)
non blocking and streaming based implementation

examples

Using simple alphabet and key 900004 for word university:

with digit names key

keyword: niefour

matrix:

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

result: qmhatrmgxs

with full number name key

keyword: niehudrtosaf

matrix:

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

result: plcovulbyq

credits

This is a project for Data Protection Basics course at Poznan University of Technology.

jakubriegel / bazeries-cipher