| Chaos is extremely sensitive to the initial conditions,even though the initial value of the difference is small,it will cause great differences in the nature of the results, this feature is often used to secure communications. Currently, embedded Linux applications in handheld information devices in is a strong momentum of development, Qt/Embedded Linux GUI cross-platform since birth, quickly swept all areas of today’s portable devices, including almost programming. So that it has become the future trend.Chaos is a significant finding of the last century, chaos theory is the best known representation butterfly effect:a butterfly pat wings in Brazil, that makes more butterflies pat wings, finally thousands of butterflies pat wings together, the giant wind they produce cause the occurrence of a tornado in Texas one month after.Chaos is a form of unique exercise in nonlinear dynamical systems,it is also a form of exercise in deterministic system, it is also a non-periodic motion that also quite sensitive to the initial condition, and this aperiodic motion is unpredictable long-term [5]. Chaos has extremely sensitive to initial conditions dependence, minimal deviation initial conditions will cause great differences in the nature of the results,it is often used in image secure communication [3-4]. Chaos Theory current development prospects are very good, and it keeps changing impact with many existing technologies and almost all science, it is not only open up people’s vision, at the same time, it also deepened the people we recognize knowledge of the objective world to make a more comprehensive understanding. With the study of chaos science people, it is also constantly changing the way people in the past way of thinking, but also enrich and develop the people’s view of nature. At the same time, embedded Linux show a strong momentum of development in handheld information devices.Since Qt/Embedded Linux GUI cross-platform birth, it quickly swept all areas of today’s portable devices, including almost programming. So that it has become the development trend of the future [15]The text of the main contents include:(1) Using chaotic key algorithm for image encryption and decryption, and finally completed the hardware implementation in ARM9development board based on Qt interface system. In the paper, Firstly,introduces some basic knowledge of chaos and digital image encryption.then,using a Wang-Chen hybrid encryption algorithm to achieve a sequence password encryption of digital images, LAN transmission and decryption.finally, forming a chaotic secure communication system. The main features of this encryption algorithm is fast and easy to implement in mobile embedded devices.(2) In the paper, introducing the embedded operating system based on Qt interface, builting a Qt/Embedded interface for embedded systems hardware and software development environment and achieving a Qt/Embedded Interface transplanted to S3C2440development board, which contains the Qt/Embedded installation and setup, the embedded Linux operating system library files transplant, Qt Creator interface design, bootloader, Linux kernel, root file system and the corresponding applications. Finally,completing the Linux-based embedded Qt interface debug and transplant.(3)Hybrid encryption scheme based on Qt interface in Embedded. Firstly, using the encryption and decryption algorithm to achieve a chaotic image encryption and decryption. Then, verify it in S3C2440development board. The experimental results show that the development board, based on digital image chaotic encryption Qt interface is reliable. In the future, this will become a trend. |
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