Cloud Storage Data Storage Mechanism To Avoid Duplication Of Research

With the rapid development of cloud storage, cloud storage is becoming more and more popular, because it can provide low-cost and on-demand use of vast storage and processing resources. While the data quantity multiplied, but the study finds that the existing data in a storage system exists a lot of redundant data. So on the basis of how to ensure data security and integrity in the cloud storage, reducing the amount of data needing to be transferred, stored and managed becomes a crucial issue for cloud storage. In particular, under the premise of how to ensure data confidentiality, trying to improve the efficiency of data de-duplication is a very important problem. This article sets up a secure de-duplication mechanism, under the condition of ensuring the storage data confidentiality, trying to improve de-duplication efficiency as much as possible.In view of the above bottleneck problems, such as redundant data, poor scalability, low efficiency and limited network bandwidth and so on, this article first introduce the related theory of cryptography and the key technologies of security de-duplication mechanism. Based on the theory and technology research and discussion, on this basis we put forward the security de-duplication mechanism with proxy, and add the version control technology.This thesis’s main designing idea about security de-duplication mechanism is: Putting de-duplication processing on the client, on the client side using hash value as the identifier for data blocks to de-duplication and data encryption and so forth. On proxy providing a metadata management, key management techniques and so on to achieve legitimate users access to stored data piece by normal and authorization, so as to realize the safety de-duplication mechanism with proxy, At the same time introducing a version control technology in the security cloud storage, and adding version control functionality to security de-duplication mechanism with proxy, ultimately guaranteeing when duplicate data to be deleted, on the basis of ensuring the data security, trying to improve the efficiency of de-duplication so as to ensure data storage space utilization.