| Summary: | 碩士 === 義守大學 === 資訊工程學系碩士班 === 98 === As the improvements of hardware and software on the mobile phone, such popular phone sets became a digital information platform. Not just for communication, people use the phone to access and store data to/from the internet. It’s very convenient that the mobile phone can also easily connect to internet and use cloud service so that the considerations of data security and management will be the major topics in the future. By the concept of data security, our group proposed an iStore system in International University Student Creativity-in-Action Contest in ISU Taiwan, 2007. So, this paper utilizes an embedded development board with Linux operation system as a platform to design and construct an application to preserving user data. This system combines the AES (Advanced Encryption Standard) code and Reed Solomon error correction code to enhance the system security and reliability. This Thesis is developed by using QT embedded GUI interface to run on touch panel of the mobile phone. To enhance the system security, the part of encryption of this paper is using a higher diversified AES system, or called DAES. There are configurations for an AES system that the system can overcome the immediate dangerous with key loss. On the part of enhancing the system reliability, a (6, 4) RS error correction code is build that any will be encoded/divided into 6 blocks and split into internet and cloud be retrieved with receiving any 4 of them.
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