Ciphering transmission method of hard disk ATA instruction

Abstract

The invention is suitable for the computer field and provides a method for encrypted transmission of an ATA instruction of a hard disk. The method comprises the following steps: a special ATA instruction is encrypted; an encrypted encryption key is re-encrypted through TPM; produced cryptograph is stored in a protective subarea of the hard disk; the special ATA instruction is the ATA instruction for communication between a mainframe system and the protective subarea of the hard disk; when a communication request is emitted, BIOS sends the special ATA instruction to a hard disk management system of the hard disk; the BIOS transfers the TPM and carries out integrated verification on a common ATA instruction transferring the special ATA instruction and a communication instruction between the BIOS and the TPM through the TPM; if the instructions are integrated, the encrypted cryptograph of the encryption key is taken out from the protective subarea of the hard disk through the BIOS, and the TPM is transferred to decrypt the encrypted cryptograph to obtain the encryption key; and the TPM sends a digital signature certificate and the encryption key to a hard disk encryption system, the special ATA instruction is decrypted through the hard disk encryption system, and the protective subarea of the hard disk is opened to execute the communication request.

Description

technical field [0001] The invention belongs to the field of computer security, in particular to an encrypted transmission method of hard disk ATA commands. Background technique [0002] In recent years, with the rapid development of the concept of "trusted computing" and its spread in China, the traditional computer architecture has been severely challenged by security. The new generation of computer software and hardware platforms that can provide trusted computing services, namely the trusted computing platform, has Started to develop, and gradually matured and standardized. It is based on the Trusted Platform Module (TPM), supported by cryptographic technology, with a secure operating system as the core, from the TPM, computer motherboard and other hardware structures and basic input and output System (BasicInput Output System, BIOS) and operating system and other underlying software, adding an independent monitoring computer to the entire computer system to ensure that ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiment of the present invention is to provide a method for encrypted transmission of hard disk ATA commands, aiming to solve the problem of malicious damage and tampering after the ATA commands between the computer host system and the hard disk may be intercepted and analyzed during the transmission process in the prior art , so that the problem of secure communication between the host computer system and the hard disk cannot be guaranteed

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