Encryption functions

# -*- coding: UTF-8 -*-
#Encrypter by BrolofTheViking
#4/23/12
#Cipher

from random import randint
#This function takes an input string and integer and outputs an encrypted string.
#Each character in the input string will be turned into multiple characters. The number of characters it turns into is equal to the input integer.
#Each character has a numerical value associated with it
#The value of each character in the group of characters in the encrypted string that corresponds to each character in the input string adds up to the value of the character in the input string.
#For example, the character Z has a value of 13
#So if the input string is just "Z" and the input integer is 3, then "Z" might be represented as "gkX" because the value of g is 2, the value of k is 10, and the value of X is 1
#The encryption also puts random numbers into the output, all of which are treated as having a value of 0
#So "Z" can also be represented as "8Z2"
#Or as "X2*" because * has a value of 12, and X has a value of 1
#The encrypter adds the
global default
default = 2
def encrypt(string,encryptvalue = default):
    if type(string) != str:
        string = str(string)
    if encryptvalue < 2:
        encryptvalue = 2
    alphabet = ['Fill','X','g','h','b','#','v','d',']','`','k','q','*','Z','D','j','p','J','W','i','T','c','%','s','!','[','Q','_','R','A','C',"'",'$','P','.',')','l','Y','f','y','n','S',' ','O','}','&','^','K','B','e','|','?','@','a','(','>',':','z','<','u','t','=','N','"','F','H',';',',','U','m','I','r','-','G','{','M','E','+','o','~','V','w','/','x','L','1','2','3','4','5','6','7','8','9','0']
    encryptedstring = ""
    if encryptvalue != default:
        encryptedstring += str(encryptvalue)
    encryptedstring += alphabet[randint(1,82)]
    n = 0
    while n < len(string):
        charactervalue = 0
        addvalue = 0
        characteradded = 0
        while string[n] != alphabet[charactervalue]:
            charactervalue += 1
        if charactervalue >= 85:
            firstcharacter = True
            while characteradded < encryptvalue - 1:
                if firstcharacter == True:
                    random = randint(10,84)
                    firstcharacter = False
                else:
                    random = randint(0,charactervalue-addvalue)
                if random == 0:
                    encryptedstring += str(randint(0,9))
                else:
                    encryptedstring += alphabet[random]
                addvalue += random
                characteradded += 1
        else:
            while characteradded < encryptvalue - 1:
                random = randint(0,charactervalue-addvalue)
                if random == 0:
                    encryptedstring += str(randint(0,9))
                else:
                    encryptedstring += alphabet[random]
                addvalue += random
                characteradded += 1
        random = charactervalue-addvalue
        if random == 0:
            encryptedstring += str(randint(0,9))
        else:
            encryptedstring += alphabet[random]
        addvalue += random
        n += 1
    return encryptedstring

def decrypt(string):
    alphabet = ['Fill','X','g','h','b','#','v','d',']','`','k','q','*','Z','D','j','p','J','W','i','T','c','%','s','!','[','Q','_','R','A','C',"'",'$','P','.',')','l','Y','f','y','n','S',' ','O','}','&','^','K','B','e','|','?','@','a','(','>',':','z','<','u','t','=','N','"','F','H',';',',','U','m','I','r','-','G','{','M','E','+','o','~','V','w','/','x','L','1','2','3','4','5','6','7','8','9','0']
    set_size = 0
    start = 0
    while string[start] == "0" or string[start] == "1" or string[start] == "2" or string[start] == "3" or string[start] == "4" or string[start] == "5" or string[start] == "6" or string[start] == "7" or string[start] == "8" or string[start] == "9":
        start += 1
    if start == 0:
        set_size = default
    else:
        set_size = int(string[:start])
    start += 1
    end = start + set_size
    output = ""
    while start < len(string):
        character = 0
        while start < end:
            charactervalue = 0
            if string[start] == "0" or string[start] == "1" or string[start] == "2" or string[start] == "3" or string[start] == "4" or string[start] == "5" or string[start] == "6" or string[start] == "7" or string[start] == "8" or string[start] == "9":
                charactervalue = 0
            else:
                while string[start] != alphabet[charactervalue]:
                    charactervalue += 1
            character += charactervalue
            start += 1
        output += alphabet[character]
        end += set_size
    return output