From c59d8508efec1fac5a7bf523624fb7bb2412ae32 Mon Sep 17 00:00:00 2001
From: siriusfox <siriusfox@noreply@git.lil-bird.xyz>
Date: Sat, 7 Oct 2023 15:30:53 -0700
Subject: [PATCH] A little utility ot obfuscate strings with unicode.

https://gist.github.com/opensiriusfox/01991231947470091001a81cda364730
---
 2021-05-15_obfuscate.py | 120 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 120 insertions(+)
 create mode 100644 2021-05-15_obfuscate.py

diff --git a/2021-05-15_obfuscate.py b/2021-05-15_obfuscate.py
new file mode 100644
index 0000000..7cacada
--- /dev/null
+++ b/2021-05-15_obfuscate.py
@@ -0,0 +1,120 @@
+#!/usr/bin/env python3
+
+import click
+from random import randint
+from random import random
+
+####################################################
+##### Example Execution
+# $ pip3 install click
+# $ chmod +x ./obfuscate.py
+# $ ./obfuscate.py "Hello World" --manglecase --dirac-max=5
+# Input "Hello World"
+# 
+# Output "ĥ̻͈̏̔ē͋͆͞ŀ͓̦̈́Ľ͎̖̃̉̈Ŏ̷͕̽͢ ̑͢Ẁ̻̈́ŏ̀̌͌͐ŕ̳ͥ͛̉͝ĺ̟̇ͦĐ̥̄ͭ̀͡"
+# 
+# $
+####################################################
+
+@click.command()
+@click.option('--no-manglecase/--manglecase', default=True)
+@click.option('--dirac-min', default=2, type=click.IntRange(0,100))
+@click.option('--dirac-max', default=14, type=click.IntRange(0,100))
+@click.option('--unmangle-probability', default=0.1, type=click.FloatRange(0,1))
+@click.argument('clean_string')
+def mangle(clean_string, no_manglecase, dirac_min, dirac_max, unmangle_probability):
+	print(f'Input "{clean_string}"\n')
+	respect_case = no_manglecase
+
+	mangled_string = ''
+	for clean_letter in clean_string:
+		new_letter = mangle_letter(clean_letter, 
+			unmangle_probability=unmangle_probability,
+			respect_case=respect_case)
+		if dirac_max < 0:
+			dirac_max = 0
+		if dirac_min < 0:
+			dirac_min = 0
+		if dirac_min > dirac_max:
+			dirac_min = dirac_max
+		new_letter += get_diracs(randint(dirac_min,dirac_max))
+		mangled_string += new_letter
+
+	print(f'Output "{mangled_string}"\n')
+
+def mangle_letter(letter_raw, 
+		unmangle_probability: float = 0.10,
+		respect_case: bool = True) -> str:
+	scope = (-1, -1)
+	letter = letter_raw.lower()
+	if letter == 'a':
+		scope = (0x00, 0x05)
+	elif letter == 'c':
+		scope = (0x06, 0x0D)
+	elif letter == 'd':
+		scope = (0x0E, 0x11)
+	elif letter == 'e':
+		scope = (0x12, 0x1B)
+	elif letter == 'g':
+		scope = (0x1C, 0x23)
+	elif letter == 'h':
+		scope = (0x24, 0x27)
+	elif letter == 'i':
+		scope = (0x28, 0x31)
+	elif letter == 'j':
+		scope = (0x34, 0x35)
+	elif letter == 'k':
+		scope = (0x36, 0x37)
+	elif letter == 'l':
+		scope = (0x39, 0x42)
+	elif letter == 'n':
+		scope = (0x43, 0x4B)
+	elif letter == 'o':
+		scope = (0x4C, 0x51)
+	elif letter == 'r':
+		scope = (0x54, 0x59)
+	elif letter == 's':
+		scope = (0x5A, 0x61)
+	elif letter == 't':
+		scope = (0x62, 0x67)
+	elif letter == 'u':
+		scope = (0x68, 0x73)
+	elif letter == 'w':
+		scope = (0x74, 0x75)
+	elif letter == 'y':
+		scope = (0x76, 0x77)
+	elif letter == 'z':
+		scope = (0x79, 0x7E)
+
+	if scope[0] < 0 or random() < unmangle_probability:
+		return letter_raw
+	
+	new_int = randint(*scope)
+	if respect_case:
+		tmp_int = new_int - scope[0]
+		if letter_raw.isupper():
+			tmp_int &= 0xFFFE
+		else: # i.e. islower()
+			tmp_int |= 0x0001
+		new_int = tmp_int + scope[0]
+	else:
+		pass
+
+	# Now put it into the extended latin range
+	new_chr = chr(0x0100 | new_int)
+	return new_chr
+
+# Pull a random list of diarac from the dirac table.
+# https://en.wikipedia.org/wiki/Combining_character
+def get_diracs(count) -> str:
+	diracs_list = []
+	for _ in range(count):
+		tmp_int = 0x4F
+		while tmp_int == 0x4F:
+			tmp_int = randint(0,0x6F)
+		diracs_list.append(chr(0x0300 | tmp_int))
+	return ''.join(diracs_list)
+
+
+if __name__ == "__main__":
+	mangle()
\ No newline at end of file