SATA encryption card with M.2 interface

Abstract

The invention discloses an SATA encryption card with an M.2 interface. The SATA encryption card comprises an SATA PHY, a CPU, an RAM, an NorFlash, a DMA and an encryption module. The SATA encryption card is communicated with the outside through an M.2 interface on the SATA PHY; the SATA PHY is provided with an SATA IN FIFO (First In First Out) and an SATA OUT FIFO; the encryption module is connected with the SATA IN FIFO through DMA. The SATA OUT FIFO is connected with the encryption module through the other DMA; wherein the encryption module is connected with the CPU, the CPU is respectivelyconnected with the RAM and the NorFlash, and the DMA, the encryption module and the SATA PHY which are connected with the SATA IN FIFO and the SATA OUT FIFO are all controlled by the CPU; when the SATA encryption card is used, the SATA encryption card is simulated as an M.2 interface SATA hard disk, and a data by pass mode is adopted to execute the read-write operation of the system on the simulated SATA hard disk. According to the SATA encryption card, equipment supporting an M.2 interface or an SATA interface can be accessed, and the SATA encryption card has the function of a traditional PCIE encryption card.

Description

technical field [0001] The invention relates to an encryption card, in particular to a SATA encryption card with an M.2 interface, and belongs to the technical field of safe storage. Background technique [0002] With the deepening and promotion of the national peer-to-peer protection 2.0 mechanism and cloud security standards, the performance, cost, and reliability requirements of basic encryption equipment are getting higher and higher. The encryption card in the traditional sense generally adopts the PCIE interface. The PCIE interface occupies a large area on the IC hardware, so the cost and power consumption are high, and the device is required to support the PCIE interface. However, when the performance requirements are not high and the encrypted data It is not suitable for occasions where the amount is small and is sensitive to power consumption. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a SATA encry...

AI Technical Summary

Problems solved by technology

The encryption card in the traditional sense generally adopts the PCIE interface. The PCIE interface occupies a large area on the IC hardware, so the cost and power consumption are high, and the device is required to support the PCIE interface. However, when the performance requirements are not high and the encrypted data It is not suitable for occasions with small power consumption and sensitive to power consumption

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