CS6903 (Spring 2021) - Project One - Cryptanalysis of a Class of Ciphers
- GitHub repo: https://github.com/joelbcastillo/CS6903-Project-One.git
- Report - castillo-chan-zhou-report.pdf
- Free software: MIT
Usage: castillo-chan-zhou-decrypt-binary [OPTIONS] COMMAND [ARGS]...
CS6903 Project One - Cryptanalysis of a Class of Ciphers using Kasiski Examination
Options:
--version Show the version and exit.
--help Show this message and exit.
Commands:
test-one Decrypt ciphertext using a chosen-message attack.
This method uses a known dictionary of possible plaintexts (e.g. chosen
messages) to attempt to decrypt ciphertext. The key is determined by using
the Kasiski Examination method of Cryptanalysis combined with an optimized
check of the decrypted text using the prefix of the known plaintexts to
return a plaintext guess.
test-two Decrypt ciphertext using a chosen-message attack.
This method uses a known dictionary of possible plaintext words to
attempt to decrypt ciphertext. The key is determined by decrypting the
first (x) ciphertext characters (where x is the length of each word in
the dictionary). We then use the same key to decrypt the rest of the
ciphertext. The key with the most words decrypted is returned as the guess
of the plaintext.To install castillo-chan-zhou-decrypt-binary, run this command in your terminal:
$ python3 -m venv venv
$ source venv/bin/activate
$ curl -H "Accept: application/vnd.github.v3+json" \
https://api.github.com/repos/joelbcastillo/CS6903-Project-One/releases/latest \
| grep "browser_download_url.*whl" \
| cut -d : -f 2,3 \
| tr -d \" \
| wget -qi -
$ pip install *.whlThis is the preferred method to install castillo-chan-zhou-decrypt-binary, as it will always install the most recent stable release.
- Ho Yin Kenneth Chan (@kenliya)
- Gary Zhou (@g-zhou)
- Joel Castillo (@joelbcastillo)
This package was created with Cookiecutter and the fedejaure/cookiecutter-modern-pypackage project template.