INNER CODE UNIT · Python

sxor

rishitsaiya/CTFlearn-Writeups · Cryptography/ALEXCTF CR2: Many time secrets/cribdrag.py:17

def sxor(ctext,crib):    
    # convert strings to a list of character pair tuples
    # go through each tuple, converting them to ASCII code (ord)
    # perform exclusive or on the ASCII code
    # then convert the result back to ASCII (chr)
    # merge the resulting array of characters as a string
    results = []
    single_result = ''
    crib_len = len(crib)
    positions = len(ctext)-crib_len+1
    for index in xrange(positions):
        single_result = ''
        for a,b in zip(ctext[index:index+crib_len],crib):
            single_result += chr(ord(a) ^ ord(b))
        results.append(single_result)
    return results

def print_linewrapped(text):

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