Smartphone Environment, Data Security Research And Realization

As the development of computer and communication technology,Mobile computing is considered one of the four most influential technologies for the future. (The others are Network infrastructure,E-commerce,Software Reuse) As the heart of mobile computing,there are more and more attentions paid to the security of embedded database. Database encryption has been proved an effective means of improving the security of the database. So even if some users can sneak into information system or by some other illegal means,steal some secreted data,maybe he can see something,but he can't get any real things.In this dissertation,based on the research and analysis of encryption algorithm,we constructed an effective mixed cryptography,which is composed of IDEA Algorithms and RSA Algorithms: The IDEA Algorithms solve the problem of data encryption,and the RSA Algorithms solve the problem of key distribution. Based on the research and analysis of datbase encryption,we implement the encryption of the core of database,which is the best method of database encryption. We can do this only becase we choice the embedded database - SQLite,a famous open source software. It allows us to enter the system to know how the database. This point is very helpful and so important that we can comlish our work.Finally,the dissertation combined the database encryption techniques with Application System based on smart phones,complished an embeded database encryption.