The mainstream embedded resolutions widely adopted in the geophysical observation device are discussed in this paper. The advantages and its applicability of the PC104 embedded module are demonstrated through its perf...The mainstream embedded resolutions widely adopted in the geophysical observation device are discussed in this paper. The advantages and its applicability of the PC104 embedded module are demonstrated through its performance description, technique development and its applications in the design of the fluxgate magnetometer, the movable seismograph and the GPS steering device.展开更多
The chain of trust in bootstrap process is the basis of whole system trust in the trusted computing group （TCG） definition. This paper presents a design and implementation of a bootstrap trust chain in PC based on t...The chain of trust in bootstrap process is the basis of whole system trust in the trusted computing group （TCG） definition. This paper presents a design and implementation of a bootstrap trust chain in PC based on the Windows and today＇s commodity hardware, merely depends on availability of an embedded security module （ESM）. ESM and security enhanced BIOS is the root of trust, PMBR （Pre-MBR） checks the integrity of boot data and Windows kernel, which is a checking agent stored in ESM. In the end, the paper analyzed the mathematic expression of the chain of trust and the runtime performance compared with the common booring process. The trust chain bootstrap greatly strengthens the security of personal computer system, and affects the runtime performance with only adding about 12% booting time.展开更多
基金State Natural Science Foundation of China (49704050) and the key Project during the ninth Five-Year Plan from China Seismological Bureau (95-04-0203).
文摘The mainstream embedded resolutions widely adopted in the geophysical observation device are discussed in this paper. The advantages and its applicability of the PC104 embedded module are demonstrated through its performance description, technique development and its applications in the design of the fluxgate magnetometer, the movable seismograph and the GPS steering device.
基金Supported by the National Natural Science Foun-dation of China (90104005 ,60373087 ,60473023) Network andInformation Security Key Laboratory Programof Ministry of Educa-tion of China
文摘The chain of trust in bootstrap process is the basis of whole system trust in the trusted computing group （TCG） definition. This paper presents a design and implementation of a bootstrap trust chain in PC based on the Windows and today＇s commodity hardware, merely depends on availability of an embedded security module （ESM）. ESM and security enhanced BIOS is the root of trust, PMBR （Pre-MBR） checks the integrity of boot data and Windows kernel, which is a checking agent stored in ESM. In the end, the paper analyzed the mathematic expression of the chain of trust and the runtime performance compared with the common booring process. The trust chain bootstrap greatly strengthens the security of personal computer system, and affects the runtime performance with only adding about 12% booting time.
