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❗ This is a mirror of https://git.sr.ht/~ecc/py-cipher. Please refrain from using GitHub's issue and PR system.

py-cipher

A few common tools for classical cipher cracking, implemented in Python 3 and C. Uses fogleman's TWL06

Prerequisites

  • Python 3 interpeter
  • C compiler

Setting up

  • Compile the C library (example with gcc):
$ gcc -Ofast -fPIC -shared -o src/libhill.so src/hillmodule.c
  • Run the graphical interface:
$ python3 main.py

Supported ciphers

  • Affine ciphers (which includes Caesar shifts and Atbash ciphers)
  • All monoalphabetic ciphers as long as the word spacing is consistent with the plaintext
  • Vigenere ciphers - including vigenere on top of a monoalphabetic cipher
  • Hill ciphers with matrix size up to 4x4