ViginereBreaker

Description

This package implements a viginere breaker.

Requirements

This package require :

• python3
• python3 Standard Library

Installation

pip install ViginereBreaker

Usages

Command line

Module

python3 -m ViginereBreaker cipher.txt

Python executable

python3 ViginereBreaker.pyz cipher.txt

Command

Basic

ViginereBreaker cipher.txt
ViginereBreaker cipher.txt -k 4 -a "ABCDEFGHIJKLMNOPQRSTUVWXYZ" -s "{\"E\":10,\"A\":7}"

Python script

from ViginereBreaker import ViginereBreaker
from codecs import encode

text=encode("""
Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch
antidisestablishmentarianism
counterimmunoelectrophoresis
oesophagogastroduodenoscopy
ethylenediaminetetraacetate
hexadecyltrimethylammonium
diisopropylfluorophosphate
ethylenediaminetetraacetic
uvulopalatopharyngoplasty
great-great-granddaughter
styrene-butadiene-styrene
cholangiopancreatography
tetracyanoquinodimethane
oligodeoxyribonucleotide
phosphatidylethanolamine
proto-industrialization
hypergammaglobulinaemia
politico-administrative
intracerebroventricular
pancreaticoduodenectomy
electro-encephalography
electroencephalographic
polytetrafluoroethylene
lysophosphatidylcholine
first-come-first-served
""", 'rot_13').upper()  # rot_13 -> key="N"

breaker = ViginereBreaker(text, statistics={"E": 11, "A": 9})
print(breaker.breaker())

# {1: [['N']], 2: [['N'], ['N']], 4: [['N'], ['N'], ['N'], ['N']]}
# ViginereBreaker try to find a key with multiple key lengths
# The ciphertext with the key 'N' or 'NN' or 'NNNN' is identical

Example

Using CustomCrypto:

• test_viginere_breaker.py
  • text.txt
  • cipher.txt

Links

• Github Page
• Documentation
• Pypi package

Licence

Licensed under the GPL, version 3.