def __call__(self, c):
        c = ord(c)
        k = self.key2 | 2
        c = c ^ (((k * (k^1)) >> 8) & 255)
        c = chr(c)
        self._UpdateKeys(c)
        return c
Build a cache for our chunks.
dataset/ETHPy150Open AndroBugs/AndroBugs_Framework/tools/modified/androguard/patch/zipfile.py/_ZipDecrypter.__call__--crossover with--dataset/ETHPy150Open google/grr/grr/lib/aff4.py/AFF4ImageBase.Initialize