CUNEICRYPT encrypts or decrypts a text file to stdout. It's a keyless cipher that replaces each printable character in a text file with a character in the cuneiform unicode block. It is written in Python for study and entertainment purposes only. This is a very weak encryption, do not use it to protect your data.

cuneicrypt.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import sys

args = sys.argv

def color(code, txt):
    # 1 Red     3 Yellow   5 Purple              7 Light Gray
    # 2 Green   4 Blue     6 Cyan (Light Blue)   8 Black
    return '\033[3' + str(code) + 'm' + str(txt) + '\033[00m'

def unicode_list(x,y):
    z=[]
    
    for i in range(x, 1 + y, 1):
        if str.isprintable(chr(i)):
            z.append(chr(i))

    return z

def crypt(opt):
    try:
        file = open(args[2], 'r')
    except:
        print( color(1,"ERROR. No such file or directory: \"%s\"."% (args[2])) )
        sys.exit()

    text = file.read()
    
    file.close()

    # https://en.wikipedia.org/wiki/Latin_script_in_Unicode
    # len(latin) = 317
    latin = unicode_list(0x0000, 0x017F)

    # https://en.wikipedia.org/wiki/Cuneiform_(Unicode_block)
    # len(cuneiform) = 317
    cuneiform = unicode_list(0x12000, 0x1213C)

    if opt == "-e":
        for char in latin:
            text = text.replace(char, cuneiform[latin.index(char)])
    else: # opt == "-d"
        for char in cuneiform:
            text = text.replace(char, latin[cuneiform.index(char)])

    # print to stdout but delete the last line because python always adds an
    # empty line at the end.
    print(text[:-1])

help = """CUNEICRYPT - encrypts or decrypts a text file to stdout.

Cuneicrypt is a keyless cipher that replaces each printable character in a text
file with a character in the cuneiform unicode block. It is written in Python
for study and entertainment purposes only. This is a very weak encryption, do
not use it to protect your data.

Use: cuneicrypt [OPTION] [FILE]

Options:
    -e    encrypts text FILE and print the result to stdout
    -d    the same, but decrypts

Copyright:
    (c) 2024 Daniel Dias Rodrigues <[email protected]>
    https://gist.github.com/nerun/a2580836aeb4b8f3a92b4110058d6e7f

License:
    This program is free software; you can redistribute it and/or modify it
    under the terms of the Creative Commons Zero 1.0 Universal (CC0 1.0) Public
    Domain Dedication (https://creativecommons.org/publicdomain/zero/1.0/)."""

if len(args) >= 2:
    if args[1].lower() == "-e" or args[1].lower() == "-d":
        crypt(args[1].lower())
    elif args[1].lower() == "-h" or args[1].lower() == "--help":
        print(help)
    else:
        print( color(1, "ERROR. No such option: \"%s\".\n" %(args[1])) )
        print(help)
else:
    print( color(1, "ERROR. Missing arguments.\n") )
    print(help)

Installation

Download cuneicrypt.py, rename it to cuneicrypt, move it to one of:

• ~/.local/bin
• /usr/bin
• /usr/local/bin

Usage

You should be capable to use it in your Linux terminal, in any folder. Start with:

$ cuneicrypt --help

If you don't want to install it, "cd" to the folder where is cuneicrypt.py and:

$ ./cuneicrypt.py --help