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With the rapid development of mobile communication technology, mobile devices have been deepened into all areas of people’s lives. At the same time, secured communications have become a hot topic of concern. Therefore, it has significant meaning to research the mobile secured terminal system.In this paper, a hardware platform for mobile secured terminal system has been designed and implemented. Based on the ARM architecture, microprocessor has been used to implement the mobile communication platform; for security issues, the co-processor which uses FPGA as the platform has been used to implement hardware encryption and decryption algorithms. In the application area, the mobile communication has been realized by WIFI access method, and it is more convenient for people by the data, the voice to the streaming media; in the security area, the important information can be encrypted, the mobile secured terminal can be realized. It plays an important role to ensure the security of the mobile secured terminal between the mobile secured terminals, provide the necessary security solutions to mobile users, enhance the mobile Internet security and promote the wider use of mobile Internet. In this paper, the main works are as followings:1, Analysis of requirement and system components of Mobile Secured Terminal are discussed.2, Schematic of Mobile Secured Terminal is presented in details, which includes: the power supply, microprocessor, serial port, USB port, LCD interface, camera interface, the audio module, SD card, network interface, WIFI module, FPGA and so on;3, PCB of mobile secured terminal is designed;4, Hardware system of Mobile Secured Terminal is tested.Finally, the test results can demonstrate that Mobile Secured Terminal can realize mobile communicate, have the function of voice call, support human-machine interaction by touch devices, and support hardware encryption and decryption of the important information.
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