| This paper makes a thorough research on multiple measures widely used by current software system's encryption and their characteristics, brings forward an idea of encryption design which based on PCI bus, and provides a particular design scheme by using PCI 9052 as an interface chip, at the same time, develops a WDM hardware device driver through Windows 2000 DDK. The encryption of MAPGIS(Map Geography Information System) as research object, the author makes an encryption card based on PCI bus, which passes test after being installed and debugged. |
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