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Credible platform module and active measurement method thereof

A platform module and active measurement technology, applied in the field of information security, can solve the problems of security, hidden dangers, and establishment of a trusted computing environment in trusted terminal systems.

Inactive Publication Date: 2008-10-29
BEIJING UNIV OF TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

Because the chain of trust is a one-way transmission chain, any problem in any node will cause the establishment of the entire trust environment to fail. Therefore, once the trusted measurement root is tampered with, it is impossible to establish a trusted computing environment in the trusted terminal system , leading to security risks in the trusted terminal system

Method used

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  • Credible platform module and active measurement method thereof
  • Credible platform module and active measurement method thereof
  • Credible platform module and active measurement method thereof

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Experimental program
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Effect test

Embodiment Construction

[0045] TPCM hardware structure

[0046] The trusted platform module adopts the classic SOC design scheme and mainly completes the basic functions of TPCM (see figure 1 ). The internal implementation of the chip includes CPU, non-volatile storage unit, volatile storage unit, random number generator, cryptographic algorithm engine, key generator, timer, control unit, active measurement unit, input and output bridge unit and bus control The I / O bridge unit maps these functional units to the access address space of the on-chip microprocessor. In addition, in addition to the LPC controller, the chip is provided with a variety of controller interfaces to adapt to different motherboard buses.

[0047] The active measurement unit, which includes a data access module, a data analysis module, a hash algorithm module and a synchronous clock module, is used to actively read the external information to be measured and complete the measurement of the information after the TPCM is powered on...

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Abstract

The invention discloses a trusted platform module and an active measurement method thereof, which relate to the field of information safety. The trusted platform module TPM is a root of trust of a trusted computing platform and a core module of trusted computing; the invention points out CRTM constitution of a root core of measurement in a TPM chip and a problem of establishing an information chain, proposes a new design proposal of the trusted platform module and the measurement method with an active mode based on the trusted platform module, designs the root of trust for measurement of the platform in the trusted platform module, solves the safety threat on the root of trust caused by tampering the BIOS and utilizes the module as the root of trust to establish a trust chain with the active mode. The invention names the module as a Trusted Platform Control Module TPCM and reflects the control function of the root of trust in the whole platform.

Description

technical field [0001] The invention relates to the field of information security, in particular to a trusted platform module and a method for active measurement thereof. Background technique [0002] The basic idea of ​​trusted computing proposed by the International Trusted Computing Organization TCG is to build a root of trust (Root of trust), and start from the root of trust. To the BIOS, the operating system, and then to the application, one level of verification is performed, so as to extend this trust to the entire computer system and ensure that the computer system is credible. [0003] TCG has launched a series of specifications based on Trusted Platform Modules (TPM), using TPM as the root of trust to establish a chain of trust from the underlying hardware to the operating system to form a trusted platform. [0004] Three trust roots are given in the TCG specification, trusted storage root, trusted reporting root and trusted measurement root. The first two roots a...

Claims

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Application Information

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IPC IPC(8): G06F21/00G06F21/71
Inventor 张兴刘贤刚庄俊玺毛军捷李晨蒋敏慧黄宁玉李瑞华刘智君孙瑜姜广智
Owner BEIJING UNIV OF TECH
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