文档介绍：重庆大学硕士学位论文英文摘要IIABSTRACTThe development puter technology bring usinformationera. More andmore people have cognizant of the importance of information security, so a lot ofcountries in the world built their Infobahn urgently. Meanwhile some mobsters turn aimto destroy, filch, juggle the important information and make enormous loss for country,corporations and security techniques are taken increasingattention with ing of information age. Keeping the safety and integrity of data inits transmission is our target. Data encryption technique is one of mostly usedinformation security techniques. Data encryption technique will be widely used in theoperation of merce and bank online. So data encryption technique shouldbe thoroughly studied. puting capacity increases with the development of CPUtechnology. It is no longer reliable to continue the use of DES as a data this background, the Americans proposed in 1997 a higher dataencryption standard, AES, to replace DES, after 3 years of evaluation tests, finally thearithmetic proposed by two Belgian experts,Rijndael Arithmetic, was defined as AESencryption article analyses latent threats to information in transmission and put forwardthe standards of safe services,then makes a summary of traditional encryption and givesa detail discussion in AES(Advanced Encryption Standard), then explains the mathknowledge and designing pcinciples of the Rijndael Arithmetic, before graduallyanalyzing the design process of the arithmetic, with an introduction to the core of thearithmetic, round transformation this article thoroughly illuminatethe theory of Rijndael. On the basis of the analysis of the arithmetic and concretepractice, with development tools, data process software modules arerealized onWIN/NTplatform. It discusses the considered technological problems in softwarerealization of Rijndael Arithmetic and methods in realizing data also