Data transmission method and device based on sata interface

A technology of SATA interface and data transmission method, which is applied in the field of data transmission method and device based on SATA interface, can solve the problems of reduced data reading and writing efficiency and high system performance loss, and achieve the effect of reducing system performance loss and improving encryption and decryption performance
CN105468983BActive Publication Date: 2020-01-03华大云芯(南京)科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
华大云芯(南京)科技有限公司
Publication Date
2020-01-03

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Abstract

The embodiment of the invention discloses a data transmission method and device based on an SATA (Serial Advanced Technology Attachment) interface, is applied to the technical field of information security, and solves the technical problems of low efficiency and high system performance loss in security read-write of hard disk data based on a hardware method. The method comprises: configuring a plurality of buffers about 8K for an SATA HOST IP and an SATA DEVICE IP respectively; copying a command of an FIS (Fis Information Structure) receiving area of the SATA DEVICE IP (Integrate Packet) to an FIS receiving area of the SATA HOST IP; dividing the reading command into a plurality of reading subcommands in a sequence by taking 8K data as one unit; controlling the SATA HOST IP, the SATA DEVICE IP and an encryption engine to execute processes of reading data, decoding data and sending data to a host in pipelined mode according to the reading subcommands.
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Description

technical field

[0001] The invention relates to the technical field of information security, in particular to a data transmission method and device based on a SATA interface. Background technique

[0002] The PC (personal computer, personal computer) performs data transmission with the hard disk through the SATA (Serial Advanced Technology Attachment, Serial Advanced Technology Attachment) interface, including writing data to the hard disk and reading data from the hard disk. Specifically, the main board and the hard disk perform control commands, status information and data transmission through the SATA HOST IP and the SATA DEVICE IP. In order to ensure the security of data transmission, the data written to the hard disk needs to be encrypted, and the host needs to decrypt the data when it reads the data from the hard disk.

[0003] In the prior art, there are mainly software methods and hardware methods for encrypting and decrypting data. The software method uses software...

Claims

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