<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:

def ext_pillar(hyper_id, pillar, name, key):
    '''
    Accept the key for the VM on the hyper, if authorized.
    '''
    vk = salt.utils.virt.VirtKey(hyper_id, name, __opts__)
    ok = vk.accept(key)
    pillar['virtkey'] = {name: ok}
    return {}