A priority-based tpm read and write control method

Abstract

The invention discloses a priority-based TPM read-write control method. The TPM read-write control method is realized by a trusted software stack, and the trusted software stack includes three layers: a kernel layer, a system service layer and a user application layer. Compared with the prior art, a priority-based TPM read-write control method of the present invention adds a mutual exclusion lock at the trusted service application layer TSP of the trusted software stack, and increases priority control at the trusted middleware TMD, Controlling parallel access to serial access enhances the usability and robustness of the trusted software stack.

Description

technical field [0001] The invention relates to the field of information security, in particular to a priority-based TPM read-write control method. Background technique [0002] A trusted application based on a TPM security chip must be based on a trusted software stack. The trusted software stack provides a top-down interface from the application layer to the hardware layer. However, conventional trusted software stacks only provide single-threaded TPM read and write capabilities, and in many application systems, the availability of trusted software stacks is restricted. [0003] Published related patent documents: titled "A multi-interface SRAM read and write control circuit and method", which discloses "A multi-interface SRAM read and write control circuit and method, the control circuit includes an interface signal conversion module and a belt The multi-channel selection of priority and feedback module, by simple hardware circuit, judge the priority of each module inte...

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