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    张焕国 李 晶 潘丹铃 赵 波. 嵌入式系统可信平台模块研究[J]. 计算机研究与发展, 2011, 48(7): 1269-1278.
    引用本文: 张焕国 李 晶 潘丹铃 赵 波. 嵌入式系统可信平台模块研究[J]. 计算机研究与发展, 2011, 48(7): 1269-1278.
    Zhang Huanguo, Li Jing, Pan Danling, and Zhao Bo. Trusted Platform Module in Embedded System[J]. Journal of Computer Research and Development, 2011, 48(7): 1269-1278.
    Citation: Zhang Huanguo, Li Jing, Pan Danling, and Zhao Bo. Trusted Platform Module in Embedded System[J]. Journal of Computer Research and Development, 2011, 48(7): 1269-1278.

    嵌入式系统可信平台模块研究

    Trusted Platform Module in Embedded System

    • 摘要: 如何有效增强嵌入式系统的安全性是信息安全领域研究的热点和难点之一.相关研究表明,可信平台模块对于有效提高信息系统的安全性十分重要.然而,现有的可信平台模块是为个人计算机设计的,并不能满足嵌入式系统特有的应用需求.针对上述问题,设计了一种适应嵌入式环境的新型嵌入式可信平台模块 (embedded trusted platform module, ETPM).作为嵌入式可信平台模块的重要组成部分,总线仲裁提高了ETPM的控制能力,增强了嵌入式系统的安全性;对称密码引擎提高了嵌入式系统的对称密码运算效率;系统备份恢复增强了嵌入式系统的可靠性.除此之外,ETPM还能够支持嵌入式平台的星型信任度量模型.这一设计已经在可信PDA中进行了实验验证,实验表明嵌入式可信平台模块是实用、高效、可靠、安全的.

       

      Abstract: How to effectively enhance the security of embedded system is an issue that is difficult to tackle and it attracts much attention in the field of information security. Relative research shows that trusted platform module (TPM) plays a crucial role in efficiently enhancing the security of information system. However, existing TPM is designed for PCs, and thus cannot satisfy the specific application needs of embedded systems. Addressing this issue, we analyze the challenges in the research of TPM posed by the embedded system environment, and propose a novel embedded trusted platform module (ETPM) that can adapt to such environment. As important components in ETPM, bus arbitration improves the platforms control ability and increases the security of embedded system; symmetric cryptography engine accelerates the speed of symmetric encryption and decryption; and system backup-recovery enhances the reliability of the embedded system. Furthermore, ETPM supports star style measurement module in embedded system environment. ETPM has been tested in trusted PDA, and experiment results show that ETPM is practical, efficient, reliable and secure.

       

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