def _kcpassword(password):
    '''
    Internal function for obfuscating the password used for AutoLogin
    This is later written as the contents of the ``/etc/kcpassword`` file

    .. versionadded:: 2017.7.3

    Adapted from:
    https://github.com/timsutton/osx-vm-templates/blob/master/scripts/support/set_kcpassword.py

    Args:

        password(str):
            The password to obfuscate

    Returns:
        str: The obfuscated password
    '''
    # The magic 11 bytes - these are just repeated
    # 0x7D 0x89 0x52 0x23 0xD2 0xBC 0xDD 0xEA 0xA3 0xB9 0x1F
    key = [125, 137, 82, 35, 210, 188, 221, 234, 163, 185, 31]
    key_len = len(key)

    # Convert each character to a byte
    password = list(map(ord, password))

    # pad password length out to an even multiple of key length
    remainder = len(password) % key_len
    if remainder > 0:
        password = password + [0] * (key_len - remainder)

    # Break the password into chunks the size of len(key) (11)
    for chunk_index in range(0, len(password), len(key)):
        # Reset the key_index to 0 for each iteration
        key_index = 0

        # Do an XOR on each character of that chunk of the password with the
        # corresponding item in the key
        # The length of the password, or the length of the key, whichever is
        # smaller
        for password_index in range(chunk_index,
                                    min(chunk_index + len(key), len(password))):
            password[password_index] = password[password_index] ^ key[key_index]
            key_index += 1

    # Convert each byte back to a character
    password = list(map(chr, password))
    return b''.join(salt.utils.data.encode(password))