Designing And Realizing IC Card System For Certificate Authority

IC card is easy to keep by users, and store certificate safetily. So Certificate Authority systems can use IC card subsystems as certificate storing media.Windows Driver Model is one of PnP device driver model. It is widely used on Windows 2000/XP system, and can realize the compatibility at source code level on Windows operating systems. So the device driver using Windows Driver Model for IC reader system is appropriate. Windows Driver Model has some special features: hiberarchy and procedures. Different layers in Windows Driver Model can complete different functions, and different procedures use to receive and complete different kind of IRPs. Several important procedures are descripted in detail. The structure and operation of IRP used for communications between Windows systems and device drivers are analysed particularly. Windows Driver Model is easy to possessing, and the device driver need to be test strictly.