56 lines
1.9 KiB
Python
56 lines
1.9 KiB
Python
import base64
|
|
plaintext = input("Enter message to encode: ")
|
|
def b36_encode(i):
|
|
if i < 0: return "-" + b36_encode(-i)
|
|
if i < 36: return "0123456789abcdefghijklmnopqrstuvwxyz"[i]
|
|
return b36_encode(i // 36) + b36_encode(i % 36)
|
|
def stepone(plaintext):
|
|
magicasciipowers = list(plaintext)
|
|
numbersgohere = [""]*len(magicasciipowers)
|
|
for i in range(len(magicasciipowers)):
|
|
temp = magicasciipowers[i]
|
|
temp = ord(temp)
|
|
if (temp<100):
|
|
numbersgohere[i]="0"+str(temp)
|
|
else:
|
|
numbersgohere[i]=str(temp)
|
|
numbers = ""
|
|
for i in range(len(numbersgohere)):
|
|
numbers=numbers+numbersgohere[i]
|
|
return(int(numbers))
|
|
def vigenere_enc(stepone,key):
|
|
alphabet = "abcdefghijklmnopqrstuvwxyz0123456789"
|
|
input_string = ""
|
|
enc_key = ""
|
|
enc_string = ""
|
|
enc_key = key
|
|
enc_key = enc_key.lower()
|
|
input_string = stepone
|
|
input_string = input_string.lower()
|
|
string_length = len(input_string)
|
|
expanded_key = enc_key
|
|
expanded_key_length = len(expanded_key)
|
|
while expanded_key_length < string_length:
|
|
expanded_key = expanded_key + enc_key
|
|
expanded_key_length = len(expanded_key)
|
|
key_position = 0
|
|
for letter in input_string:
|
|
if letter in alphabet:
|
|
position = alphabet.find(letter)
|
|
key_character = expanded_key[key_position]
|
|
key_character_position = alphabet.find(key_character)
|
|
key_position = key_position + 1
|
|
new_position = position + key_character_position
|
|
if new_position > 35:
|
|
new_position = new_position - 36
|
|
new_character = alphabet[new_position]
|
|
enc_string = enc_string + new_character
|
|
else:
|
|
enc_string = enc_string + letter
|
|
return(enc_string)
|
|
key=input("Enter encryption key: ")
|
|
steptwo = vigenere_enc(b36_encode(stepone(plaintext)),key)
|
|
steptwob = steptwo.encode('utf-8')
|
|
stepthree = base64.a85encode(steptwob)
|
|
stepthreeb = stepthree.decode('utf-8')
|
|
print("Your encoded message: "+str(stepthreeb)+"3") |