Local Data Security and Privacy Protection in Cloud Service Applications

In the past ten years, the technology researches and applications on Cloud Computing have been booming. Depending on large data centers and distributed cluster servers, different layers of Cloud Services make it possible that computing performance becomes stronger, storage space extends vastly and price becomes much lower. With the development of Cloud Computing, countless entrepreneurs and individual users benefit from it. However, it is evident that there exist hidden security problems in individual cloud applications' privacy protection and data safety. At present, the safety of cloud services usually only depends on the security policies provided by cloud service providers and their implementation level. Once users' data and privacy are leaked, it will have a terrible impact on social order besides economic losses. This is an obstacle to the development of cloud computing services. Therefore, our project is going to encrypt users' data in local clients through the BlowFish encryption algorithm and then use the interface of cloud computing to upload the encrypted data so that we can establish a perfect data security and privacy's mode protection without affecting the experience and efficiency of use. Because the mode is independent of cloud computing service providers, users' data and privacy security can be guaranteed. It can enhance users' confidence and is good for the further development of cloud services.