| Currently, the information and network Security of the embedded system is facing a rigorous challenge, the Security problem becomes the first consideration of embedded system design. The aim of this dissertation is studying the architecture of the secure embedded system and some theories related to it, put forward methods to construct secure embedded system and modify the architecture of embedded platform JARI-EVB3118 to enhance its security.To attaining this target, the security problems of embedded system and its development actuality according to the embedded application are analyzed first by this dissertation. Embedded system architecture and some Security theories (technique) are studied too. Security policies and design strategies of embedded system design and outlines of constructing secure embedded system are presented then.Secondly, three solutions of secure embedded system are analyzed. Based on the analysis, design method of secure embedded system and two kinds of secure embedded system architecture is presented. One is putting security mechanism into the hardware platform, system software and application according as all kinds of security requirement. Another is putting secure processing chip (TPM) into the system architecture consulting the ideas of trusted computing. These two projects can deal with the embedded system secure problem better.Finally, secure processing chip (TPM) is put into the embedded platform based on domestic CPU relying on the secure embedded system architecture. The function and structure design of the trusted platform module (TPM) is presented and the security of modified system is analyzed too. |
