extractor.py 文件源码

def io_md5(target):
        """
        Performs MD5 with a block size of 64kb.
        """
        blocksize = 65536
        hasher = hashlib.md5()

        with open(target, 'rb') as ifp:
            buf = ifp.read(blocksize)
            while buf:
                hasher.update(buf)
                buf = ifp.read(blocksize)
            return hasher.hexdigest()