High-performance encryption and decryption device

The invention discloses a high-performance encryption and decryption device. The device comprises an encryption unit and a computer comprising an SATA interface module. The encryption unit comprises an interface module with an SATA (Serial Advanced Technology Attachment) port, and the SATA port is connected with an SATA interface of the computer in an inserting way; the SATA interface module further comprises a mini PCIe to Ethernet network card, an FPC flexible circuit board and an SATA interface adapter board. The mini PCIe to Ethernet network card is inserted into a MINI PCI-E slot of the computer, one end of the FPC flexible circuit board is connected with a corresponding connecting end of the mini PCIe to Ethernet network card, and the other end of the FPC flexible circuit board is connected with the SATA interface adapter plate; and the computer is used for communicating with the encryption unit through the SATA interface module to finish encryption of local data or storage afterdecryption. According to