| At the present time, embedded systems have become ubiquitous. In addition to communications equipment, industrial control and a few other areas, embedded systems have been developed into electronic products field which are closely related to daily life. At the same time, embedded systems become increasingly complex, embedded operating system has become an important part of embedded systems. Attributed to its open-source, Linux has been widely applied in the embedded system field in recent years. Embedded Linux platform has become the basic platform of numerous embedded products. The rapid development of embedded devices based on embedded Linux platform has improved people's work efficiency and quality of life significantly. However, it also brings the issue of data security, and the issue is increasingly conspicuous with the devices and applications become more complex.In this paper, a data encryption system design based on Embedded Linux platform was put forward. Firstly, the author analyze the architecture of embedded Linux system platform, system features and several common data security mechanisms.Secondly, presents the design strategy of data encryption system in detail. Thirdly, conduct verification test for the core functionality of the design and analyze the test results. At last, introduce the problems needs to be improved in brief.The data encryption system combines the authentication mechanism and the data encryption mechanism, and can provide transparent encryption and decryption functions in the process of reading and writing. The thesis provide an effective solution to the data security issue on embedded Linux platform, and point out a new direction for the further study in this field. |
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