Caeser.py

banner = """\u001b[36;1m
 █████▄  ██▀███   ▄▄▄       ▄████  ▒█████    ███▄ ▄███    ▄███    ▓▓▄     █ 
▒██  ██▌▓██ ▒ ██▒▒████▄     ██▒ ▀█▒▒██   ██▒ ██▒▀█▀█ █ ▒██   ██ ▄ ██ ▀█   █ 
░██   █▌▓██  ▄█ ▒▒██  ▀█▄  ▒██░▄▄▄░▒██░  ██ ▓██    ▓██▒ ██   ▀█▄▓ ██  ▀█ ██▒
░▓█▄   ▌▒██▀▀█▄  ░██▄▄▄▄██ ░▓█  ██▓▒██   ██░▒██    ▒██ ░██▄▄▄▄██ ▓██▒  ▐▌██▒
░▒████▓ ░██▓ ▒██▒ ▓█   ▓██▒░▒▓███▀▒░ ████▓▒░▒██▒   ░██▒ ▓█   ▓██▒▒██░   ▓██░
 ▒▒▓  ▒ ░ ▒▓ ░▒▓░ ▒▒   ▒█░ ░▒   ▒ ░ ▒░▒░▒░ ░ ▒░   ░  ░ ▒▒   ▓▒█░░ ▒░   ▒ ▒ 
 ░ ▒  ▒   ░▒ ░ ▒░  ▒   ▒▒ ░  ░   ░   ░ ▒ ▒░ ░  ░      ░  ▒   ▒▒ ░░ ░░   ░ ▒░
 ░ ░  ░   ░░   ░   ░   ▒   ░ ░   ░ ░ ░ ░ ▒  ░      ░     ░   ▒      ░   ░ ░ 
   ░       ░            ░  ░      ░    ░ ░         ░         ░  ░         ░ 
                \u001b[32;1m                        
                                             --Presented with <3 by Shivanshu Sharma
\u001b[35   __   __   ___  ___  ___  ___     ___  ___   __  __  ___  ___  ___  
 / _) (  ) (  _)/ __)(  _)(  ,)   (   \(  _) / _)/  \(   \(  _)(  ,) 
( (_  /__\  ) _)\__ \ ) _) )  \    ) ) )) _)( (_( () )) ) )) _) )  \ 
 \__)(_)(_)(___)(___/(___)(_)\_)  (___/(___) \__)\__/(___/(___)(_)\_)
\u001b[32;1m \u001b[0m    """
print(banner) 
menu=""" \u001b[33;1m
------------------------------------------
            LIST OF DECODERS             |
------------------------------------------
  [+] ASCII CONVERTER      -- Ascii.py   |
  [+] ATBASH DECODER       -- Atbash.py  |
  [+] CAESER DECODER       -- Caeser.py  |
  [+] BACON DECODER        -- Bacon.py   |
  [+] BASE32 DECODER       -- Base32.py  |
  [+] BASE64 DECODER       -- Base64.py  |
  [+] BASE85 DECODER       -- Base85.py  |
  [+] DNA DECODER          -- Dna.py     | 
  [+] MORSE DECODER        -- Morse.py   | 
  [+] NUMBER SYSTEM        -- Num.py     | 
        [!] BINARY TO TEXT               | 
        [!] HEX TO TEXT                  | 
        [!] OCTAL TO TEXT                |  
  [+] RAILFENCE DECODER    -- Rail.py    |
  [+] REVERSE CIPHER       -- Reverse.py |  
  [+] ROTn DECODER        -- Rot.py      | 
  [+] TRANSPOSITION CIPHER -- Trans.py   | 
  [+] VIGNERE DECODER      -- Vignere.py |
------------------------------------------s
\u001b[32;1m""" 
print(menu)

MAX_KEY_SIZE = 26
def getMode():
    while True:
        print('Do you wish to Decrypt with key [D]/ Bruteforce [B] a message?')
        mode = input().lower()
        if mode in ' decrypt d brute b'.split():
            return mode
        else:
            print('Enter either "decrypt" or "D" "brute" or "B".')
def getMessage():
    print('Enter your message:')
    return input()
def getKey():
    key = 0
    while True:
        print('Enter the key number (1-%s)' % (MAX_KEY_SIZE))
        key = int(input())
        if (key >= 1 and key <= MAX_KEY_SIZE):
            return key
def getTranslatedMessage(mode, message, key):
    if mode[0] == 'd':
        key = -key
    translated = ''
    for symbol in message:
        if symbol.isalpha():
            num = ord(symbol)
            num += key
            if symbol.isupper():
                if num > ord('Z'):
                    num -= 26
                elif num < ord('A'):
                     num += 26
            elif symbol.islower():
                if num > ord('z'):
                    num -= 26
                elif num < ord('a'):
                    num += 26
            translated += chr(num)
        else:
            translated += symbol
    return translated
mode = getMode()
message = getMessage()
if mode[0] != 'b':
    key = getKey()
print('Your translated text is:')
if mode[0] != 'b':
    print(getTranslatedMessage(mode, message, key))
else:
    for key in range(1,MAX_KEY_SIZE + 1):
        print(key, getTranslatedMessage('decrypt',message,key))