plaintext.txt

Psu Encrypt
Graduate Student Version (80bit key)

boooiiiiiiizzzz_z


    Graham Seamans
    seamansgraham@gmail.com

To Run

    Place the key into ./key.txt
    Place the plaintext into ./plaintext.txt or the ciphertext into ./ciphertext.txt
    Run: 'python src/main.py e' or 'python src/main.py d' where e is encrypt and d is decrypt. If you don't provide an arumgent you will be prompted.
    Find the plaintext or cypher text in the appropriate file.

Notes

    This runs with ASCII encode and decode so things will get weird with UTF-8 files, although the majority of the text will be just fine.

Included Files

    ./plaintext.txt - Put the plain text here to encrypt or find it here after decryption.
    ./ciphertext.txt - Put the cipher text here to decrypt or find it here after encryption.
    ./key.txt - The key goes here. No '0x' before the key. 80bit key only.
    ./src/main.py - Takes user input about whether to encrypt and decrypt and interfaces with cipher.py
    ./src/cipher.py - Largely runs the show. Reads and writes to files and calls the festel.py with blocks to encrypt or decrypt.
    ./src/festel.py - The festel cipher. Gets keys from key.py. Has the f and g functions.
    ./src/key.py - Generates the keys. returns a list of lists of all subkeys in encrytion order.
    ./src/ftable.py - The ftable and lookup function.