des.py 文件源码

def str_to_key56(key_str):

    if not type(key_str) == six.binary_type:
        # TODO rsanders high - figure out how to make this not necessary
        key_str = key_str.encode('ascii')

    if len(key_str) < 7:
        key_str = key_str + b'\000\000\000\000\000\000\000'[:(7 - len(key_str))]
    key_56 = []
    for i in six.iterbytes(key_str[:7]):
        key_56.append(i)

    return key_56