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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,157 @@ | ||
| #!/usr/bin/env python | ||
| """This module is designed to provide users Caesar Cipher tools.""" | ||
| from __future__ import division, absolute_import, print_function, unicode_literals | ||
| __author__ = 'marcsantiago' | ||
|
|
||
| from helper_files import detectEnglish | ||
|
|
||
| try: | ||
| from future_builtins import * | ||
| except ImportError: | ||
| pass | ||
|
|
||
| try: | ||
| input = raw_input | ||
| range = xrange | ||
| except NameError: | ||
| pass | ||
|
|
||
| def c_encipher(plain_text, key, file_mode=False): | ||
| """The encipher module takes plain text as enter a passed string | ||
| argument or a basic .txt file. A key must also be provide. Since, this | ||
| if a Caesar Cipher the key that is provide must be in the range of 1 through 26""" | ||
| try: | ||
| assert type(key) == type(int()) | ||
| except AssertionError as e: | ||
| print("Entered key must be a an integer and a string: %s" % str(e)) | ||
|
|
||
| try: | ||
| assert key > 0 and key < 27 | ||
| except: | ||
| print("Key must be greater than 0 and less than 27.") | ||
|
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||
| translated = [] | ||
|
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||
| if file_mode: | ||
| with open(plain_text, 'r') as in_data: | ||
| plain = in_data.read() | ||
| else: | ||
| plain = plain_text | ||
|
|
||
| for ch in plain: | ||
| if ch.isalpha(): | ||
| num = ord(ch) | ||
| num += key | ||
|
|
||
| if ch.isupper(): | ||
| if num > ord('Z'): | ||
| num -= 26 | ||
| elif num < ord('A'): | ||
| num += 26 | ||
|
|
||
| elif ch.islower(): | ||
| if num > ord('z'): | ||
| num -= 26 | ||
| elif num < ord('a'): | ||
| num += 26 | ||
|
|
||
| translated.append(chr(num)) | ||
| else: | ||
| translated.append(ch) | ||
|
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| answer = input("Write data to file? [y], [n]\n") | ||
|
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||
| if answer.lower() in ["yes", "y"]: | ||
| with open("enciphered_caesar.txt", 'w') as data: | ||
| data.write("".join(translated)) | ||
| return "".join(translated) | ||
| else: | ||
| return "".join(translated) | ||
|
|
||
| def c_decipher(cypher_text, key, file_mode=False): | ||
| """The decipher module takes cypher text as enter a passed string | ||
| argument or a basic .txt file. A key must also be provide. Since, this | ||
| if a Caesar Cipher the key that is provide must be in the range of 1 through 26""" | ||
| try: | ||
| assert type(key) == type(int()) | ||
| except AssertionError as e: | ||
| print("Entered key must be a an integer and a string: %s" % str(e)) | ||
|
|
||
| try: | ||
| assert 0 < key < 27 | ||
| except: | ||
| print("Key must be greater than 0 and less than 27.") | ||
|
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| key = -key | ||
|
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||
| translated = [] | ||
|
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| if file_mode: | ||
| with open(cypher_text, 'r') as in_data: | ||
| plain = in_data.read() | ||
| else: | ||
| plain = cypher_text | ||
|
|
||
| for ch in plain: | ||
| if ch.isalpha(): | ||
| num = ord(ch) | ||
| num += key | ||
|
|
||
| if ch.isupper(): | ||
| if num > ord('Z'): | ||
| num -= 26 | ||
| elif num < ord('A'): | ||
| num += 26 | ||
| elif ch.islower(): | ||
| if num > ord('z'): | ||
| num -= 26 | ||
| elif num < ord('a'): | ||
| num += 26 | ||
|
|
||
| translated.append(chr(num)) | ||
| else: | ||
| translated.append(ch) | ||
|
|
||
| answer = input("Write data to file? [y], [n]\n") | ||
| if answer.lower() in ["yes", "y"]: | ||
| with open("deciphered_caesar.txt", 'w') as data: | ||
| data.write("".join(translated)) | ||
| return "".join(translated) | ||
| else: | ||
| return "".join(translated) | ||
|
|
||
| def brute_force_decrypt(cypher_text, file_mode=False): | ||
| """This method trys all the possible keys on a cyphered text and returns the | ||
| key and plain text string. It does this using the imported dictionary module, which | ||
| is a modified version of http://inventwithpython.com/hacking (BSD Licensed)'s dictionary module. | ||
| If an English plaintext is not found all 26 garbage keys will be printed for you to double check.""" | ||
| if file_mode: | ||
| with open(cypher_text, 'r') as in_data: | ||
| cypher = in_data.read() | ||
| else: | ||
| cypher = cypher_text | ||
|
|
||
| for key in range(1, 27): | ||
| key = -key | ||
| translated = [] | ||
| for ch in cypher: | ||
| if ch.isalpha(): | ||
| num = ord(ch) | ||
| num += key | ||
| if ch.isupper(): | ||
| if num > ord('Z'): | ||
| num -= 26 | ||
| elif num < ord('A'): | ||
| num += 26 | ||
| elif ch.islower(): | ||
| if num > ord('z'): | ||
| num -= 26 | ||
| elif num < ord('a'): | ||
| num += 26 | ||
|
|
||
| translated.append(chr(num)) | ||
| else: | ||
| translated.append(ch) | ||
|
|
||
| if detectEnglish.isEnglish("".join(translated)): | ||
| return "Key: %s String: %s" % (abs(key), "".join(translated)) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,45 @@ | ||
| #!/usr/bin/env python | ||
| from __future__ import division, absolute_import, print_function, unicode_literals | ||
| # This is module is designed to hide a string message inside of an image. Note, This | ||
| # is just for fun and applies no real encryption. This is more of a way to obscure | ||
| # one's message inside of a png file | ||
| __author__ = 'marcsantiago' | ||
|
|
||
| try: | ||
| from PIL import Image | ||
| except ImportError: | ||
| print("This module requires the PIL module.") | ||
| print("To install the PIL module on unix or linux,") | ||
| print("type [pip install Pillow] terminal.") | ||
| print("If using python3 please use [pip3 install Pillow].") | ||
|
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||
| try: | ||
| from easygui import buttonbox, enterbox, msgbox, fileopenbox | ||
| except ImportError: | ||
| print("This module requires the easygui module.") | ||
| print("To install the easygui module on unix or linux,") | ||
| print("type [pip install easygui] terminal.") | ||
| print("If using python3 please use [pip3 install easygui].") | ||
|
|
||
| def hide_or_show_message(): | ||
| """This method ask the user whether they want to encrypt a string or decrypt a *.png file.""" | ||
| temp_data = [] | ||
| answer = buttonbox("What would you like to do, encrypt a message or decrypt the image?", choices=["Encrypt", "Decrypt"]) | ||
| if answer == "Encrypt": | ||
| plaintext = enterbox("Enter a message you would like to hide in an image.") | ||
| im = Image.fromstring('L', (1, len(plaintext)), plaintext) | ||
| filename = enterbox("Give your image a name.") | ||
|
|
||
| if ".png" in filename: | ||
| filename = filename.replace(".png", "") | ||
| im.save(filename + ".png", format("PNG")) | ||
|
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| elif answer == "Decrypt": | ||
| image_file = fileopenbox("Please pick an image file that you would like to decrypt.", filetypes=["*.png"]) | ||
| my_image = Image.open(image_file) | ||
| pix = my_image.getdata() | ||
|
|
||
| for i in list(pix): | ||
| temp_data.append(i) | ||
|
|
||
| return msgbox("".join([chr(i) for i in temp_data])) |
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