Python breakSingleByteXOR Examples

Example #1

File: challenge6.py Project: chujian521/crypto

def breakRepeatingKeyXor(x, k):
    blocks = [x[i:i + k] for i in range(0, len(x), k)]
    transposedBlocks = list(itertools.zip_longest(*blocks, fillvalue=0))
    key = [
        challenge3.breakSingleByteXOR(bytes(x))[0] for x in transposedBlocks
    ]
    return bytes(key)

Example #2

File: challenge4.py Project: chujian521/crypto

def findSingleByteXOR(lines):
    brokenLines = [challenge3.breakSingleByteXOR(l)[1] for l in lines]

    def scoring(i):
        return challenge3.scoring(brokenLines[i])

    maxI = max(range(len(brokenLines)), key=scoring)
    return (maxI + 1, brokenLines[maxI])

Example #3

def breakSameKey(strings):
    transposedStrings = list(zip(*strings))
    key = [
        challenge3.breakSingleByteXOR(bytes(x))[0] for x in transposedStrings
    ]
    return bytes(key)

Example #4

File: challenge6.py Project: chrisjleaf/cryptopals

def breakRepeatingKeyXor(x, k):
    blocks = [x[i:i+k] for i in range(0, len(x), k)]
    transposedBlocks = list(itertools.zip_longest(*blocks, fillvalue=0))
    key = [challenge3.breakSingleByteXOR(bytes(x))[0] for x in transposedBlocks]
    return bytes(key)

Example #5

File: challenge4.py Project: Allen-smith/ctf-tools

def findSingleByteXOR(lines):
    brokenLines = [challenge3.breakSingleByteXOR(l)[1] for l in lines]
    def score(i):
        return challenge3.score(brokenLines[i])
    maxI = max(range(len(brokenLines)), key=score)
    return (maxI+1, brokenLines[maxI])

Example #6

File: challenge20.py Project: chrisjleaf/cryptopals

def breakSameKey(strings):
    transposedStrings = list(zip(*strings))
    key = [challenge3.breakSingleByteXOR(bytes(x))[0] for x in transposedStrings]
    return bytes(key)