High-performance password card and communication method thereof

The invention provides a high-performance cipher card with high integration, which comprises a cipher integrated chip, a random source module, a FLASH chip, a PCI-E interface and an intelligent cipherkey, and is characterized in that a main processor unit, a cipher algorithm operation unit, a peripheral interface unit, a BAR register and a DMA controller are integrated in the cipher integrated chip; a BAR register and a DMA controller are further arranged in the password integrated chip; the BAR register is further connected with an external host through the command logic channel, receives management instruction data issued by the external host, reconstructs a password operator and DMA configuration data and stores the password operator and the DMA configuration data in a register of thecryptographic algorithm operation unit; the DMA controller is connected with an external host through the arithmetic logic channel, and is connected with the asymmetric algorithm arithmetic unit and the reconfigurable symmetri