| 摘要 |
<p>A software regulation system for regulating the use of a software program in a host digital data processing (computer) system. The software regulation system includes one or more checkpoint routines processed by the software program and a software regulation device, which may be part of the computer system or connected externally thereto. The checkpoint routines generate random checkpoint messages, which are enciphered and transmitted to the software regulation device. The software regulation device deciphers the checkpoint message, performs a processing operation to generate a response message, enciphers the response and sends the enciphered response to the checkpoint routine. The checkpoint routine then determines whether the enciphered response is correct and either allows the software program to proceed or terminates it.</p> |
