def get_cipher_key(keyfile=None):
    _key = get_key(keyfile)
    _k = md5(_key).hexdigest()
    key = xor(_k[:8], _k[8:16], _k[16:24], _k[24:])
    return key
Create key which will be used in des, because des need 8bytes chars
dataset/ETHPy150Open limodou/uliweb/uliweb/contrib/secretkey/__init__.py/get_cipher_key