| With the rapid development of IOT, coupled with the popularity of the Internet, so that a variety of items connected to the Internet as possible, which brings great convenience to people’s daily lives, but also greatly promotes the development of social economy, but meanwhile, a lot of problems need to be resolved in the process of IOT. Firstly, because IOT will comprise more equipment and items, and they will generate more data, current computing resources will be challenged, and a major problem is how to deploy computing resources for massive data processing. An effective way to solve this problem is the use of distributed technologies. With the growth of data, distributed computing technology will become a basic computing technology in the era of IOT. Secondly, due to the open nature of the Internet, IOT can be seen as the Internet extension at its terminals, so IOT is bound to have a certain degree of openness, coupled with recent inundation of online fraud, which made people worry about privacy issues in the era of IOT. Therefore, Making a study on security technology of IOT, which ensure the healthy and rapid development of IOT, really promote social development, and improve people’s living standards. Finally, in the era of IOT, the data will show explosive growth, which will generate vast amounts of data, and how to deal with these data and how to find the information that people need from vast amounts of data quickly, which also be a problem to be needed to solve in the era of IOT. Therefore, this paper focuses on research on related data processing issues based on IOT.In summary, this paper studies the distributed technology, information safety techniques of IOT and text-processing techniques, specifically including the principle of distributed systems, the generation technology of rainbow tables, acceleration technology of password cracking based on rainbow tables, text processing technology. Firstly, the principle and architecture of distributed systems was carefully studied and built a cluster system for subsequent experimental use; Secondly, this thesis seriously studied and deeply researched the principles of the rainbow table generation, and the generation of rainbow tables acceleration technology, and conducted experiments related to the generation of rainbow tables, and accelerated generation experiment of rainbow table using distributed clusters, and did some deep research on technologies of cracking password based on rainbow tables, taking use of self-generated rainbow tables, conducted some password-cracking experiments and taking use of relevant technology, designed and implemented a system, that is a cracking password of encrypted document of word2003system based on rainbow tables, and do some password-cracking experiments on encrypted word2003documents, as well as accelerated cracking experiment with the use of distributed clusters, success rate of password cracking reaches up to99%; Finally, the paper conducted in-depth study and research on text processing techniques for data processing based on IOT, and on the basis, completed the design and implementation of an system based on LDA topic model about text classification, and make the model learn by relevant training data, and then do some experiments on text classification, the precision of classification result reaches up to91%. |